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Medium voltage products
UniGear MCCArc-proo, air insulated motor controlcenter with used vacuum contactor
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Index
4 1. Description
6 2. Air insulated switchgear
10 3. IEC Classiication
12 4. Design eatures
14 5. Full tpe-tested
16 6. Saet
20 7. VSC vacuum contactor
22 8. Instrument transormers
24 9. Measurement sensors
28 10. Cable terminations
30 11. Distribution automation
42 12. Tpical units
44 13. Technical data
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1. Description
A real 400 A load current with double uses per phase in a
400 mm wide panel. The UniGear switchgear amil is now
extended with a new motor control center solution, the
UniGear MCC. Designed or the highest degree o saet and reliabilit, the
UniGear MCC provides or maximum ease o use. All operations and maintenance actions are made rom the
ront o the panel, which is equipped with mechanical saet
interlocks between vacuum contactor and earthing switch. The vacuum contactor is the well-proven VSC tpe with
magnetic actuator.
For optimal exibilit, the UniGear MCC is designed to
be used in combination with other versions o UniGear
switchgear, such as ZS1, 550 and 500R.
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Characteristics o UniGear MCC
Range
7.2 kV, 400 A, 50 kA
IEC standards
Standard and customized versions
Features
Slim and compact panel onl 400mm wide
Fused vacuum contactor with magnetic actuator
Cable termination height up to 600mm
Safety
Fitted with saet interlocks and visible earthing connection
Internal arc classiication IAC AFLR
Classiied as LSC-2A, PM
Flexibility
Wide range o applications
Traditional and IEC 61850 based protection and control
solutions
Applications
Utilities and power plants
Substations
Power generation stations
Transormer stations
Switching stations
Main and auxiliar switchgear
Industry
Pulp and paper
Cement
Textiles
Chemicals
Food
Automotive
Petrochemical
Quarring
Oil and gas pipelines
Metallurg
Rolling mills
Mines
Marine applications
Drilling platorms
O-shore oil rigs
Cruise ships
Container ships
Tankers
Cable ships
Ferries
Transport
Airports
Ports
Infrastructure
Shopping malls
Hospitals
Educationals
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MF MF MF MF MF IF BT R MF MF MF MF MFIF
2. Air insulated switchgear
The UniGear range is now completed with the compact
contactor unit with uses, the motor control center.
UniGear MCC is the result o man ears o experience
with the design, manuacturing and application o vacuum
contactors across the entire range o industrial and utilit
installations.
This panel use a magnetic actuator o vacuum contactor and
it is designed speciicall or motor, transormer and capacitor
bank switching and protection or rated voltages up to 7.2 kV
and rated currents up to 400 A.
A real 400 A load current with double uses per phase in a
400 mm wide panel.
The vacuum contactors are capable o requent switching
with low switching over voltages. The switchgear can be
conigured to meet the actual process requirements.
Thanks to the use o uses as the main means o protection, it
can be used in installations with ault currents up to 50 kA.
This unit is able to combine maximum accessibilit o all
the components with limited dimensions available toda or
medium voltage switchgear.
The innovative integration o the components oers a solution
with extremel reduced weight and ootprint, allowing eicientuse o space in electrical installations.
The most evident characteristic o this unit is its
compactness, just 400 mm.
It thereore inds ideal application in installations with a high
number o contactor outgoing eeders or in situat ions with
ver limited space available.
The use o the contactor unit with uses is preerable to
the use o circuit-breakers when a high number o dail
operations is required.
The interrupters or use in the contactor guarantee an
extremel high number o closing and opening operations
under normal load conditions and with a maximum ratedshort-time withstand current o 6 kA.
The electrical lie o the contactor is deined as being in
categor AC3 with 100,000 operations (closing-opening),
400 A interrupted current (or more inormations please make
reerence at page 20).
The use o medium voltage protection uses strongl limits the
ault let-through energ, allowing the contactor to be used in
installations even with high ault currents.
This characteristic also helps to saeguard the levels o
insulation and increase the electrical lie o the cables and o
the connected machine.
Figure 1 : Compound configuration with UniGear ZS1
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For the same reason, the switchgear unit can use earthing
switches or the power cables with reduced making capacities
compared to the rest o the switchgear components, but
suitable in an case or the ault current available on the load
side o the uses.
The limiting properties o the uses also allow cables with
reduced cross-sections to be used or the connection
between the switchgear and the machines to be protected
(reductions between 60 and 80% can be obtained), leading to
a considerable reduction in costs.
UniGear MCC has the same overall dimensions (height and
depth) and the same main busbars arrangement as UniGearZS1 with a maximum current o 4000 A.
The unit can be coupled directl to others UniGear ZS1, 550
and 500R without the using o adaptor panel; a ver lexible
solution.
For this panel, positioning back to the wall is possible.
In act, the switchgear does not require access rom the rear
or the installation and maintenance procedures.
All the service operations are carried out rom the ront.
As a standard solution, it is possible to connect up to two cables
per phase (maximum cross-section o 240mm). The connection
height o the cables in relation to the oor is 600 mm.
The surge arresters as optional can also be inserted in the
cable area.
UniGear MCC uses ring core current transormers as the
standard solution, which are ixed onto CT Rods. On the
same CT rod can be ixed the sensors instruments.
The UniGear MCC switchgear is itted with all the interlocks
and accessories needed to guarantee level o saet or
equipment and personnel and reliabilit or the installation and
or the operators.
The operations on the vacuum contactor are perormed with
the ront door closed.
The contactor position is deined in the ollowings:
inserted:contactorinoperationpositionwithearthing
switch open
test:contactorinthemiddlepositionwitheathingswitch
open
removed:contactorinextractedpositionwithearthing
switch closed
Figure 2 : Cable connection area
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2. Air insulated switchgear
One o the main characteristics o the UniGear MCC is the
new automatic earthing switch that it is operated b the
movement o the vacuum contactor.
This device is a patented switch with rectilinear movement.
This earthing switch has been dimensioned to conduct the
rated short circuit making current o the contactor on cable
side; this means 6 kA.
The earthing switch is equipped with three pins which
connects the three phases o the cable connection sstem.
The earthing pins are electricall connected to earth b a
stranded copper conductor.
The speed o the snap action closing operation is indipendento controls.
The closure o the earthing switch is drive b the movement o
the vacuum contactor truck.
When the vacuum contactor will move rom test
to removed position the earthing switch will close
automaticall.
With the clousure o the earthing switch it will be unlocked the
possibilit to open the ront door and get access to the power
cables.
The UniGear MCC panel is itted with a ront inspection
window to veri the open or closed position o the earthing
switch.
Figure 4 : Automatic earthing switch
The earthing switch has been tested at two closing operations
at 100% o the rated short-circuit making current (6 kA).
The device is provided with auxiliar switches or signalling the
open and closed positions, operated b the rod mechanism.
The ollowing are available on request: locking magnet
ke locks or open and closed positions
padlock
Figure 3: Earthing switch front indication
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IEC electrical characteristics
Switchgear UniGear MCC
Tpe o construction Internal arc classiication IAC AFLR
Rated voltage [kV] 7.2
Insulation levels / power requenc / lightning impulse [kV] 7.2/20/60
Rated requenc [Hz] 50/60
Rated main busbar current (40 C) (3) [A] ... 4000
Rated eeder current (40 C) [A] ... 400
Rated short-time current (1) [kA x 3 s] .... 50
Arc proo withstand current (IEC 62271-200) (2) [kA x 1 s] ... 50
Tested according toIEC
Standards
The switchgear and main apparatus contained in it compl
with the ollowing Standards: IEC62271-1forgeneralpurposes
IEC62271-200fortheswitchgear
IEC62271-102fortheearthingswitch
IEC60071-2fortheinsulationcoordination
IEC60470forthecontactor
IEC60529fordegreeofprotections
Normal service conditions
The rated characteristics o the switchgear are
guaranteed under the ollowing ambient conditions:
minimumambienttemperature:5C
maximumambienttemperature:+40C
For dierent temperature ranges, please contact our ABB
sales representative
ambienthumidity:
- maximum 24 h average o relative humidit 95% RH
- maximum 24 h average o water vapour pressure 2,2 kPa
- maximum monthl average o relative humidit 90% RH
- maximum monthl average o water vapour pressure
1.8 kPa
thenormaloperationalaltitudeisupto1000mabovesea
level. For higher altitude applications, please contact our
ABB sales representative
presenceofnormal,non-corrosiveanduncontaminated
atmosphere
Degrees o protection
The degrees o protection o the switchgear conorm with
IEC 60529 Standards.UniGear MCC switchgear is normall supplied with the
ollowing standard degrees o protection:
IP4Xfortheenclosure
IP2Xforthepartitionsbetweenthecompartments.
On request, the external housing can be supplied with higher
degrees o protection; in this case, please contact our ABB
sales representative.
The electrical characteristics o the switchgear can var or
ambient conditions other than those described in the previous
section and also i a higher degree o protection is used.
Colour o the external suraces
RAL7035 - light gre. (Front doors and side sheets). Other
colours available on request.
(1) Limited b the uses.
(2) The internal arc withstand values are guaranteed on the busbar compartment; the suppl side. The ault in contactor and cable compartment is limited b the uses.
(3) 4000 A is achieved with UniGear ZS1 combination.
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3. IEC Classiication
With the release of the IEC 62271-200 standard, new defi-
nitions and classifications of Medium Voltage switchgear
have been introduced.
One of the most significant changes is that classification
of switchgear into metal-clad, compartmented and cubi-
cle types has been abandoned.
The revision of switchgear classification rules has been
based on the users point of view, in particular on aspects
like service and maintenance of the switchgear, according
to the requirements and expectations for proper manage-
ment, from installation to dismantling.
In this context, Loss of Service Continuity (LSC) has beenselected as a fundamental parameter for the user.
According to the IEC 62271-200, UniGear MCC switchge-
ar can be defined as follows.
Loss o service continuit - LSC-2A
The various LSC categories describe the possibilit o
keeping other compartments and/or panels energized while
a compartment in the main c ircuit is opened. The deined
categories are:
LSC-1: the whole switchgear shall be put outo service oropening a main circuitcompartment or normal operation
and/ornormal maintenance or or gaining access toan
switchgear components
LSC-2A: the same as LSC-1 with the exception that the
main busbars and the unctional unitsadjacent to the one
under maintenance can remain energized
LSC-2B: the same as LSC-2A with the exceptionthat the
cable compartment can remainenergized.
UniGear MCC is classiied as LSC-2A because the busbar
and contactor cable compartments are phsicall and
electricall segregated. This is the categor that deines the
possibilit o accessing the contactor/cable compartment withthe busbars and cables energized.
Partition Metallic - PM
With regard to the tpe o partitions or shutters between
live parts and an open compartment, a distinction is made
between two partition classes:
Class PM (Partition made o Metal)
Class PI (Partition made o Insulating material).
UniGear MCC is deined with PM partition class having the
segregation between compartments made o metallic sheets/
shutters.
Interlock-controlled accessiblecompartment
The ront side o UniGear MCC is classiied interlock-
controlled because the access o the compartments
containing high-voltage parts, intended to be opened or
normal operation and/or normal maintenance, is controlled b
the integral design o the switchgear.
Tool-based accessible compartment
The rear part o the UniGear MCC is classiied tool-based
because it is possible to open the compartment containing
high-voltage parts, that ma be opened, but not or normal
operation and maintenance, onl using a tool. Special
procedures are required.
Internal arc classifcation IAC AFLR
UniGear MCC switchgear is classified IAC AFLR
When the switchgear is speciied and installed, some
undamental points must be taken into consideration:
level o the ault current (16...50 kA)
duration o the ault (0.1...1s)
escape routes or the hot and toxic gases produced b
combustion o materials
dimensions o the room, with special attention to the height.
Please consult our ABB representatives or detailed
inormation.
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4. Design eatures
Compartments
Each switchgear unit consists o two power compartments
busbars [A], contactor/cables [B]; please reer to Figure 5.
The closing o the contactor/cables compartment doors is
with handle.
Each unit is itted with a low voltage compartment [C], where
all the auxiliar instruments are housed.
Arc-proo switchgear is normall provided with a duct [D] or
evacuation o the gases produced b an arc; dierent tpes o
gas ducts are available.
All the compartments are accessible rom the ront and
maintenance operations can properl carried out with the
switchgear installed up against a wall. The compartments are
segregated rom each other b metallic partitions.
Main busbars
The busbar compartment contains the main busbar sstem
connected to the upper isolating contacts o the contactor b
means o branch connections.
The main busbars are made o electroltic copper.
For ratings up to 2500A, the busbars are made o lat bars;
while or currents between 3150A and 4000A, a special D-
shape busbar is used.
The busbars are covered with insulating material.
There is a single busbar compartment along the whole length
o the switchgear, which optionall can be dividing into com-
partments.
Cable connections
The contactor/cable compartment contains the branch ss-
tem or connection o the power cables to the lower contacts
o the contactor.
The eeder connections are made o electroltic copper and
the are lat bars or the whole range o current.
Earthing switch
Each contactor/cable compartment can be itted with an
earthing switch or cable earthing.
The earthing switch has short-circuit making capacit limited
b the presence o the uses.
Control o the earthing switch is rom the movement o the
contactor with automatic operation.
The position o the earthing switch can be seen rom the ront
o the switchgear b means o a mechanical coupled indicator
and via ront inspection window.
Earthing busbar
The earthing busbar is made o electroltic copper and it runs
longitudinall throughout the switchgear, thereb guaranteeing
maximum personnel and installation saet.
Insulating bushings and shutters
The insulating bushings in the busbar compartment contain
the contacts or connection o the contactor with the busbar
compartment.
The insulating bushings are o three-pole tpe and are made
o epox resin. The shutter is metallic tpe and it is activatedautomaticall during the movement o the contactor rom the
test position to the inserted position and vice versa.
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D
B
AC
Cables
Single and three-core cables up to a maximum o two cables
per phase can be used depending on the rated voltage and
the cable cross section (please reer to page 28).
The switchgear can be back to wall installed as cables are
easil accessible rom the ront.
Gas exhaust duct
The gas exhaust duct is positioned above the switchgear and
runs along its whole length.
Each power compartment is itted with a lap on its top
surace. The pressure generated b the ault makes it open,
allowing the gas to pass into the duct.
Evacuation rom the room o the hot gases and incandescent
particles produced b the internal arc must normall be
carried out. The UniGear MCC switchgear can be itted with
a complete range o solutions to satis with all requirements,
either in the case where evacuat ion is possible directl at the
end o the switchgear, or when solutions rom the ront or rear
are requested.
Some installations, such as marine applications, do not
allow evaquation o the gases to the outside o the room and
thereore a dedicated solution has been realised to guarantee
personnel saet and conormit with the Standards, such as
longitudinal evacuation chimnes. Please contact ABB sales
representative or more inormations.
Figure 5 : UniGear MCC section view
Unit compartments
A Busbar compartments
B Contactor/cable compartment
C Low voltage compartment
D Compact gas duct channel
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Figure 6: UniGear MCC panel after internal arc test
The UniGear MCC switchgear has undergone all the tests
required by the international (IEC) Standards and local
Standards organizations (for example, the Chinese GB/DL
and Russian GOST standards).
In addition, the tests required by the main shipping
registers (LR, DNV, RINA, BV and GL) have been carried
out for use of the switchgear in marine installations.
As indicated in these standards, the tests were carried
out on the switchgear units considered most sensitive
to the effects of the tests and therefore the results were
extended across the whole range.
Each switchgear unit is subjected to routine tests in thefactory before delivery.
These tests are intended to provide a functional check of
the switchgear based on the specific characteristics of
each installation.
5. Full tpe-tested
IEC tpe tests
Short-time and peak withstand current
Temperature rise
Internal arc capabilit
Dielectric test
Making and breaking capacit o contactors
Earthing switch making capacit
Mechanical operations o contactor and earthing switch
IP degree
IEC routine actor tests Visualinspectionandcheck
Mechanicalsequenceoperations
Cablingcheck
Electricalsequenceoperations
Powerfrequencywithstandvoltage
Measurementoftheresistanceofthemaincircuits
Secondaryinsulationtest
Special tpe tests required b shipping
registers or marine application
Highambienttemperatures(+45C)
Inclination
Vibration
Description o IEC tpe tests
Short-time and peak withstand current
The test shows that the main power and the earthing circuits
resist the stresses caused b the passage o the short-circuit
current without an damage.
It should also be noted that both the earthing sstem o the
withdrawable circuit-breaker and the earthing busbar o the
switchgear are subjected to the test.
The mechanical and electrical properties o the main busbar
sstem and o the top and bottom branch connections remain
unchanged even in the case o a short-circuit.
Temperature rise
The temperature rise test is carried out at the rated current
value o the switchgear unit and shows that the temperature
does not become excessive in an part o the switchgear unit.
During the test, both the switchgear and the circuit-breaker or
contactor it ma be itted with are checked.
Internal arc capability
Please reer to page 16.
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Dielectrictest
These tests veri that the switchgear has suicient
Capabilit to withstand the lightning impulse and the power
requenc voltage.
The power requenc withstand voltage test is carried out as
a tpe test, but it is also routine test on ever switchgear unit
manuactured.
Contactormakingandbreakingcapacity
The contactor is subjected to the rated current and short-
circuit current breaking tests.
Furthermore, it is also subjected to the opening and closing o
capacitive and inductive loads, capacitor banks and/or cable
lines.
Earthingswitchmakingcapacity
The earthing switch o the UniGear MCC switchgear can be
closed under short-circuit. Although, the earthing switch is
normall interlocked to avoid being operated on circuits which
are still live.
However, should this happen or an one o several reasons,
saet o the personnel would be ull saeguarded.
Mechanicaloperations
The mechanical endurance tests o all the operating parts
ensures the reliabilit o the apparatus.
General experience in the electro-technical sector shows that
mechanical aults are one o the most common causes o a
ault in an installation.
Contactor is tested b carring out a high number o
operations - higher than those which are normall carried out
in installations in operation.
Moreover, the switchgear components are part o a qualit
program and are regularl taken rom the production lines
and subjected to mechanical lie tests to veri that the qualitis identical to that o the components subjected to the tpe
tests.
IPdegree
The IP protection degree is the resistance oered b the
UniGear MCC against penetration o solid objects and liquids.
This degree o resistance is indicated b the preix IP ollowed
b two numbers.
The irst number identiing the protection degree against the
entrance o solid objects, the second one is related to liquids.
Tpe tests required b the shipping
registers
Highambienttemperatures
The service conditions o the electrical apparatus in shipping
installations are generall more severe than those in normal
land applications.
The temperature is certainl one o these actors and or this
reason the shipping register regulations require the switchgear
to be able to operate at higher ambient temperatures (45 C
or higher) than those stated in the IEC Standards (40 C).
Inclination
The test is carried out b inclining the switchgear or a deined
time up to 25 alternativel on all our sides and operating the
apparatus.
The test proves that the switchgear is able to resist these
extreme service conditions and that all the apparatus it
contains can be operated without an problems and without
being damaged.
Vibration
The reliabilit and sturdiness o the UniGear MCC switchgear
has been deinitivel proven b the result o the withstand
test to mechanical stresses due to vibration. The service
conditions on shipping installations and marine platorms
require the switchgear to work in environments strongl
aected b vibrations, such as those caused b the motors
on large cruise ships or the drilling plants o oil rigs.
1 mm amplitude in the requenc range between 2 and
13.2 Hz.
0.7 g acceleration amplitude in the requenc range
between 13.2 and 100 Hz.
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When developing modern medium voltage switchgear,
personnel safety must necessari ly take priority. This is
why the UniGear MCC switchgear has been designed and
tested to withstand an internal arc due to a short-circuit
current of the same current level as the maximum short-
time withstand level.
The tests show that the metal housing of UniGear MCC
switchgear is able to protect personnel near the switchge-
ar in the case of a fault which evolves as far as striking an
internal arc.
An internal arc is a highl unlikel ault, although it cantheoreticall be caused b various actors, such as:
insulation deects due to qualit deterioration o the
components. The reasons can be adverse environmental
conditions and a highl polluted atmosphere
overvoltages o atmospheric origin or generated b the
operation o a component
inadequate training o the personnel in charge o the
installation
breakage or tampering o the saet interlocks
overheating o the contact area, due to the presence
o corrosive agents or when the connections are not
suicientl tightened entr o small animals into the switchgear (i.e. through cable
entrance)
material let behind inside the switchgear during
maintenance activities
The characteristics o the UniGear MCC switchgear notabl
reduce the incidence o these causes or aults, but some o
them ma not be eliminated completel.
The energ produced b the internal arc causes the ollowing
phenomena:
increase in the internal pressure
increase in temperature visual and acoustic eects
mechanical stresses on the switchgear structure
melting, decomposition and evaporation o materials
Unless suitabl protected, these phenomena have ver
serious consequences or the personnel, such as wounds
(due to the shock wave, ling parts and the doors opening)
and burns (due to emission o hot gases).
The internal arc test veriies that the compartment doors
remain closed and that no components are ejected rom the
switchgear even when subjected to ver high pressures, and
that no lames or incandescent gases penetrate, therebensuring saet o the personnel near the switchgear.
The test also ensure that no holes are produced in external
accessible parts o the housing, and inall, that all the
connections to the earthing circuit remain intact, hence
guaranteeing the saet o personnel who ma access the
switchgear ater the ault.
The IEC 62271-200 Standard describes the methods to
be used or carring out the test and the criteria which the
switchgear must conorm to.
The UniGear MCC switchgear ull conorms to all the ive
criteria indicated b the IEC standards.
The IAC classiication is proved b the test according to theollowing designations:
general: classiication IAC (Internal Arc Classiied)
accessibilit: A, B or C (switchgear accessible to authorized
personnel onl (A), to all (B), not accessible due to
installation (C)
F, L, R: access rom the ront (F Front), rom the sides (L
Lateral) and rom the rear (R rear)
test values: test current in kiloamperes (kA), and duration in
seconds (s)
The parameters o each speciic plant mean that evacuation
o the hot gases and incandescent particles must be checkedver careull in order to ensure and maintain personnel saet.
Fault limiting sstems
The structure o the UniGear MCC switchgear oers complete
passive tpe protection against the eects o a ault due to an
internal arc or a time o 1 second up to 50 kA.
ABB has also developed excellent active protection sstems
which allow ver important objectives to be achieved:
detection and extinction o the ault, normall in less than
100 ms, which improves network stabilit
limitation o damage on the apparatus
limitation o outage time or the switchgear unit.
For active protection against an internal arc, devices
consisting o various tpes o sensors can be installed in the
various compartments, which detect the immediate outburst
o the ault and carr out selective tripping o the contactor.
The ault limiting sstems are based on sensors which use the
pressure or light generated b the arc ault as t rigger or ault
disconnection.
6. Saet
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Melting of steel
Melting of copper
Melting of cables
0 100 200 500 ms
kA2 s
ITH
The ITH sensors consist o micro-switches positioned on the
top o the switchgear near the gas exhaust laps o the two
power compartments (busbars and contactor/cables).
The shock wave makes the laps open and operate the
micro-switches connected to the shunt opening release o the
contactor.
Totaltrippingtimeis45ms(15msITH+30mscontactor).
FRD (Fast Recover Device)
This sstem consists o pressure sensors located in the low
voltage compartment and connected to the three power
compartments b means o small tubes.
The sensors detect the rising ront o the pressure wave which
develops on the outburst o the arc and react b making the
circuit-breakers open.
The sensors are protected against the external environment
and the can be checked even with the switchgear in
operation.
Totaltrippingtimeis45ms(15msFRD+30mscontactor).
TVOCThis sstem consists o an electronic monitoring device located
in the low voltage compartment which is connected to optic
sensors. These are distributed in the power compartments and
are connected to the device b means o optic fbres.
When a certain pre-set light level is exceeded, the device
opens the circuit-breakers.
To prevent the sstem rom intervening due to light occasionall
generated b external phenomena (ash o a camera,
reections o external lights, etc.), current transormers can also
be connected to the monitoring device.
The protection module onl sends the opening command to the
circuit-breaker i it receives the light and short-circuit currentsignal simultaneousl.
Totaltrippingtimeis32ms(2msTVOC+30mscontactor).
Figure 7: Arc duration and damage caused
REA
This sstem oers the same unctionalit as TVOC. The REA
sstem consists o the main unit (REA 101) and optional
extension units (REA 103, 105, 107) which make it possible to
create customized solutions with selective tripping. For more
inormation, please see the dedicated chapter at page 38.
Totaltrippingtimeis32,5ms(2,5msREA+30ms
contactor).
Arc protection in IED
The REF615, RET615, REM615 and REF610 IEDs (Intelligent
Electronic Device) can optionall be itted with a ast and
selective arc lash protection. It oers a two-to three-channel
arc-ault protection sstem or arc lash supervision o the
circuit breaker, cable and busbar compartment o switchgear
panels.
Totaltrippingtimeis42ms(12msIED+30mscontactor).
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6. Saet
Figure 8 : Front view of the panel key system
The UniGear MCC switchgear is itted with all the interlocks
and accessories needed to guarantee the highest level o
saet and reliabilit or both installation and personnel.
Interlocks
The saet mechanical interlocks are standard ones [14],
please see the dedicated table at page 19.
The are stated b the IEC standards and are thereore
necessar to guarantee the correct operation sequence.
ABB saet interlocks guarantees the highest level o reliabilit,
even in the case o an accidental error, and enables highest
operator saet sstem o interlocks.
Kes
The use o ke interlocks is ver important in realising the
interlocking logics between panels o the same switchgear, or
o other medium, low and high voltage switchgear. The logics
are realised b means o distributors or b ringing the kes.
The contactor truck [5] can be locked in the removed
position and the relevant lock ke can onl be removed with,
the contactor in this position.
In this position the earthing switch is automatica ll closed, the
same ke [5] can use a lso or this lock.
The earthing switch opening [6] operation can be locked b
means o ke.
The latter can onl be removed with the earthing switch in an
opposed position to the lock to be made.
Padlocks
The contactor/cables [7] compartment door can be locked in
the closed position b means o padlock.
This can be applied to both door closing versions with
central handle (standard) or screws (optional).
The metallic segregation shutters [8] between contactor
and busbars compartments can be locked b means o two
independent padlocks in both the open and closed positions.
Padlocks rom 4 to 8 mm diameter can be accomodated.
Locking magnets
The locking magnets are used to make automatic interlock
logics without human intervention.
The contactor racking-in/out [9] operation can be interlocked.
The magnets operate with active logics and thereore the lacko auxiliar voltage leaves interlocking sstem active (in saet
conditions).
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Standard safety interlocks (mandatory)
Lock Description Condition to be fulfilled
1 A Contactor racking-in/out Contactor open
B Contactor closing Deined contactor position
2 A Contactor racking-in Contactor multi-contact plug plugged
B Contactor multi-contact plug unplugging Contactor remove position
3 A Earthing switch closing Contactor remove position
B Contactor racking-in Earthing switch open
4 A Contactor/cables compartment door opening Contactor in remove position
B Contactor racking-in Contactor/cables compartment door closed
Keys
5 Earthing switch closing Can onl be removed with the contactor in removed position
6 Earthing switch open Can onl be removed with the contactor in inserted position
Padlocks
Lock
7 Contactor/cables compartment door opening
8 Shutters opening or clos ing
Locking magnets
Lock Condition to be fulfilled
9 Contactor racking-in/out Magnet energized
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7. VSC vacuum contactor
V-Contact VSC medium voltage contactors are apparatus
suitable or operating in alternating current and are usuall
used to control eeders which require a high number o
operations per hour.
The are suitable or operating and protecting motors,
transormers and power actor correction banks. Fitted with
appropriate uses, the can be used in circuits with ault levels
up to 1000 MVA.
The electrical lie o V-Contact VSC contactors is deined
as being in categor AC3 with 100,000 operations (closing-
opening), 400A interrupted current.
The contactors consist o a monobloc o resin containing the
ollowing components:
vacuuminterrupters
movingequipment
magneticactuator
multivoltagefeeder
accessoriesandauxiliarycontacts
Figure 9 : V-Contact VSC on the service trolley
The V-Contact contactors are provided in the ollowing
versions:
VSC7/Pforvoltagesupto7.2kVinUniGearZS1
VSC12/Pforvoltagesupto12kVinUngearZS1
VSC7/PNforvoltagesupto7.2kVinUniGearMCC
Both versions are available with the operating mechanism with
SCO or DCO coniguration.
Operative mechanism
Due to the Magnetic actuator V-Contact VSC contactors have
a negligible auxiliar power requirement in all conigurations(15W inrush - 5W continuous or all conigurations).
V-Contact VSC is available in three dierents conigurations.
SCO (single command operation). The contactor close
supplng auxiliar voltage to the multivoltage eeder input,
when auxiliar is cut the contactor opens.
DCO (double command operation). The contactor close
supplng auxiliar voltage to the multivoltege eeder c losing
input and opens when opening input is supplied; anti pumping
unction is supplied as a standard.
DCO coniguration is also available, on request, with adelaed undervoltage unction. This unction allow to
automaticall open the contactor when auxiliar voltge level
drops below IEC deined levels.
Opening can be delaed rom 0 to 5 seconds (customer
setting b dipswitches).
All conigurations are suitable or 1.000.000 o mechanical
operations.
Fuses
The contactor is itted with medium voltage uses orprotection o the operated eeders.
Coordination between the contactor, uses and protection unit
is guaranteed in accordance with the IEC 60470 Standards
or apparatus in class C.
The use-holder rame is usuall preset or installation o a set
o three uses per phase with average dimensions and tpe o
striker, according to the ollowing Standards:
DIN43625
BS2692
VSC/PN is also suitable to install two BS 2692 uses in
parallel per phase.
VSC contactors cannot be used with ABB CEF-BS and BBCMF-BS uses.
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The ollowing uses can be applied:
DINtypewithalengthof192,292and442mm
BStypewithalengthof235,305,410,454and553mm
The use-holder rames are itted with a device or automatic
opening when even just one use blows. This same device
does not allow contactor closing when even a single use is
missing.
The ABB range o DIN uses or transormer protection
is called CEF, whereas CMF is the one or motors and
capacitors.
Standards
IEC60470forthecontactor
IEC60282-1forthefuses Figure 10: Double fuse according to BS standard
Electrical characteristics
VSC7/PN
Rated voltage [kV] 7.2
Rated insulation voltage [kV] 7.2
Rated power requenc withstand voltage [kV] 20Rated lighning impulse withstand voltage [kV] 60
Rated requenc [Hz] 50-60
Rated short-time withstand current [kA] ...50 (1)
Peak current [kA] ...125
Internal arc withstand current [kA x 1 sec] ...50 (2)
Maximum rated current o the contactor [A] 400
(1) Limited b the uses.
(2) The internal arc withstand values are guaranteed on the busbar compartment; the suppl side. The ault in contactor and cable compartment is limited b the uses.
Maximum performances of the contactor with fuses
7.2 kV
Motors [kW] 3000
Transormers [kVA] 4000
Capacitors (single bank) [kVAR] 3000
Rated
voltageContactor type
Fuse brand
and international
standard
Motors Transformer Capacitors (single bank)
Fuse rated
current
Contactor
operational
rated current
Fuse rated
current
Contactor
operational
rated current
Fuse rated
current
Contactor
operational
rated current
[A] [A] [A] [A] [A] [A]
7.2 kV VSC7/P ABB (DIN tpe) 315 250 200 160 315 220
SIBA (BS tpe) 250 200 250 160 250 125
VSC7/PN ABB (DIN tpe) 315 250 200 160 315 220
SIBA (BS tpe) 2x250 400 xxx xxx 2x250 250
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8. Instrument transormers
Ring core current transormers
Low voltage current instrument transormer, without primar
conductor. KORI 071 DF 12 current transormers can
be assembled on the bushing with their own insulation.
Transormers o this tpe series enable the measuring and
protection and are designed or use in indoor installations.
The number o secondar windings (1 or 2) depends on
the combination o the technical parameters (such as the
accurac class, burden, short-circuit current and overcurrent
actor) and have the posibilit to be reconnectable on the
secondar side.
Assembl procedure o the transormers on the bushings in
Unigear MCC is exactl speciied (triangle position).
These transormers compl with IEC 60044-1 standard
Figure 11: KORI ring core current transformer with CT Rod Figure 12: Application example of KORI ring core current transformer in
UniGear MCC
Terminals Ratio Burden Class
S1-S2 150/1A/A 0.5 VA 0.5/5P40
S1-S3 400/1A/A 0.5 VA 0.5/5P40S1 S2 S3
S1 S2 S3
P1 P2
Terminal marking
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4X
8,50
Technical data
Type (low voltage current transormer or medium voltage application) KORI
Highest voltage or equipment Um [kV] 0.72
Power requenc test voltage 1min [kV] 3
Rated insulation level [kV] 0.72 / 3 / -
Rated requenc n [Hz] 50 / 60
Rated primar current [A] 10 - 400
Rated secondar current [A] 1 or 5
Rating short-time thermal current Ith 3s [kA] 50.0
Rating peak current Idn [kA] 125.0
Accurac classes [kA] 0.2, 0.2S, 0.5, 0.5S, 1, 5P, 10PBurden [VA] 1 - 20
Highest voltage o a sstem [kV] 12 kV b using CT ROD
Flammabilit class B
KORI072GH8currenttransformersaredesignedforABBswitchgeartypeUniGear550
and have the following dimensions.
Rating Plate
90
180
180
156
156
29
S1 S2
59
180
P1
1
20
1
5
4
0
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is
Us
9. Measurement sensors
Figure 13: Linearity of advanced ABB sensors and example of output signal waveforms compared to conventional saturated CT
Electronic instrument transormers
Future or measuring currents and voltages in intelligent
UniGear is a low-power instrument transormer (according to
present IEC standards the belong to the group o Electronic
instrument transormers) called a sensor or short. These
products replace conventional instrument transormers.
The characteristic eature o advanced ABB sensors is
the level o output signal, which is ull adapted to it new
microprocessor-based equipment without the need o having
unnecessar power.
The analogue output signal level depends on the principle
used and can be in the range o mV or current sensor (tpical
value is 150 mV at rated primar current).
The UniGear MCC can be itted with one KECA ring tpe
current sensor.
Secondar
output
Saturation level
10A 100A 1000A 10 000A Primar current
ABB sensor
Standard CT
Characteristics o the sensors
Construction o current sensors is done without the use o
erromagnetic core. This act results in several important
beneits or the user and the application:
sensor behavior is not inluenced b non-linearit and
width o hsteresis curve; that results in accurate and
linear response over a wide dnamic range o measured
quantitites
single device/sensor could be used or both protection and
or measurement purposes (no need or a separate design/
product)
there are no hsteresis losses, so sensors are having
excellent requenc response also at requencies dierent
rom the rated one, thus providing ver precise input to
protection unctions, allowing more precise ault analsis
and eicient ault location.
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sensors do not have dangerous states in operation (no
problem to keep output short-circuited or let open),
resulting in high saet or surrounding devices and
personell. The output signal remains ver low even in ault
situations o the network.
the use o sensors disable the possibilit o related
erroresonance phenomena, thus even more increasing the
saet and reliabilit o the power network; urthermore,
there is no need or additional protection equipment, special
burden or wiring.
ABB sensors are connected to the measurement and
protection evaluation devices b means o shielded cablesand connectors, providing a high degree o immunit to
electromagnetic disturbances.
Accurac o these sensors is veriied and tested including the
cabling, so precise inormation is assured up to the evaluation
device. Furthermore, the use o ABB sensors and ABB relas
enables to guarantee the overal sstem accurac, i.e. to
guarantee the accurac o ull measurement chain = sensors
together with IED, to be better than 1%.
Figure 14: KECA ring core type sensor
Benefts o the sensors
Due to the linear response and wide dnamic range, sensors
are much more standardized devices (compared to a number
o dierent designs o CTs). Thereore, it is much easier to
select the appropriate design (it simpli engineering tasks)
and there could be also reduction in spare parts on user side.
Signiicantl decreased power consumption during operation
o sensors due to negligible losses introduced b sensors
(no iron = no hsteresis losses; less winding and negligible
output current = small losses in sensor winding) results in
huge savings or lost energ and minimized temperature rise
(thus improving temperature conditions and ageing within
application). It also results in signiicantl lighter devices,
having weight onl a raction o that provided b conventional
CTs. Thereore, no special machines/tools are needed to car
them and transport costs can be smaller.
Fast connection o sensors to IEDs without an tools and
material needed simpli and reduce assembl eort.
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9. Measurement sensors
Current sensor
The current sensor is based on Rogowski Coil principle.
Rogowski Coil work in the same manner as conventional iron-
core current transormers (CTs). The main dierence between
Rogowski Coils and CTs is that Rogowski Coil windings are
wound over a non-magnetic core, instead o over an iron
core. As a result, Rogowski Coils are linear since the non-
magnetic core cannot saturate. Rogowski Coils produce
output voltage (US) that is a scaled time derivative o the
measured primar current (IP).
Figure 15: Working principle of Rogowski Coil
Integration o the current sensor output signal is perormed
within the connected IED in order to obtain the inormation
about actual current value.
Output voltage is phase shited o 90 rom the primar
current waveorm.
Thereore, or simple and rough inormation about the
measured current signal, it is possible to use voltmeters with
high input impedance. Nevertheless, more exact and precise
inormation under transient conditions, content o dierent
requenc components or current waveorm distortions
that appears in electric power network requires integration
o voltage signal comming out o Rogowski Coil. This
unctionalit is alread available inside o IEDs provided b
ABB, so ver precise measurement o the primar current isavailable.
Output voltage o Rogowski Coil linearl depends on
requenc, thereore rated value o output voltage is 150mV
at 50Hz and 180mV at 60Hz. Once the rated requenc is
set in the IED, sensor provides precise inormation about the
measured primar current signal even or dierent harmonics
(no hsteresis losses and no saturation applies) and thus
correct perormance or all protection unctions is assured.
In theor, response o Rogowski coil output is linear in
unlimited dnamic range o the measured primar current.
Constraints in their use originates rom other limitations, e.g.application size, ixations etc. Onl single coil is suicient to
cover whole range o primar currents needed, e.g. KECA
250B1 tpe has been successull tested up to 2000A
continuous thermal current.
The conorm to the IEC 60044-8 standard.
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Outer dimensions o KECA
L=500050
7
0
69
8.5
1
47
123
176
123 2920
37.5
90 P2P1
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10. Cable terminations
Terminations or polmeric insulated
cables 1 7.2 kV
General
It is crucial that power cables connecting the switchgear
are terminated properl, and or this purpose, ABB have
developed an excellent range o eas-to-use products or
preparation and termination o cables.
MV power cables are normall designed with a conductor o
aluminium or copper, an insulation o polmeric material, anextruded insulation screen, a metallic screen, an armouring
(optional) and a polmeric outer jacket.
To enable sae and reliable current carring properties, it
is necessar to achieve suicient mechanical connection
between the cable conductor and the bus bar. ABB oer
mechanical cable lugs designed to it the cable conductor b
means o bolting technique.
It is also essential to guide the electrical ield o the cable in a
proper wa, and ABB oer Cold Applied terminations, made
o rubber, that create an active pressure around the cable.
Furthermore, i the cable is designed with another tpe ometallic screen than copper wires, special earthing kits must
be used to achieve proper handling o possible ault currents.
The armouring o the cable shall have the same earth
potential as the cable screen, wh it might be necessar to
use additional connection material that also can be oered.
Detailed inormation can be ound in separate technical
inormation or cable accessories.
Applications and features
Depending on cable design, it is necessar to use the
correct tpe o cable accessor. When single core cables are
designed with copper wire screen onl, it is suicient to use
just a cable lug and a termination that its the actual size o
the cable.
The beneit with Cold Applied accessories means that no
heat or open lame is necessar or the installation (except or
branch seals on 3-core cables). Ater the cable is prepared,
the termination is simpl slid on without an tools. I a three
core cable is used, or a cable with copper tape screen,
or aluminium oil screen, or a cable with armouring; thenadditional material is required.
Another ver important actor is to prepare the cable in a
proper wa, and ABB a lso oer excellent cable preparation
tools.
Recommended cable termination products
The pre-moulded cable termination tpe Kabeldon SOT can
be used on an polmeric cab le irrespective o design or
conductor size. Tpe SOT 10 is designed or 7.2 kV cables.
A ew variants o terminations it a wide range o cable sizes.
Extra material such as earthing kits, c rutch seals or 3-core
cables and screen potential material or cable armouring is
also within the ABB range o products.
Kindl contact ABB Sales Representative or more
inormation.
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Figure 16: Kabeldon cable termination type SOT 10 with bi-metallic cable
lug type SKSB
Figure 17: Kabeldon cable termination type SOT 24 with bi-metallic cable
lug type SKSB
Designaton and sizes
Voltage level
kV
Designation
Kabeldon
Diameter
over insulationmm
Conductor size
mm7.2 kV
1 7.2 SOT 101 10.5 15 10 35
1 7.2 SOT 102 12.9 25.8 50 150
1 7.2 SOT 103 21.4 34.9 185 300
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11. Distribution automation
ABBs Power Protection Philosoph
With deliveries o protection IEDs (Intelligent Electronic
Devices) to more than 70 countries, ABB best understands
the requirements o diverse protection needs as a result
o wide ranging local legislation, saet requirements and
engineering practices. Thereore, ABB has developed a power
protection philosoph that not onl serves the speciic needs
and requirements o diverse power sstems, but also creates
a eeling o conidence and peace o mind or both power
sstem owners and users alike.
The main purpose o an ABB IED power protection sstem
is to recognize an abnormal power sstem conditions, or
abnormall operating components within the power sstem.
Then, based on the inormation gathered b the IED, the
power protection sstem will initiate corrective actions to
return the power sstem to its normal operating state, or,
isolate the ault to limit damage to the power sstem and
injur to personnel. This provides a sae environment or all.
Power protection sstems do not prevent power network
aults rom arising, but it will be activated onl when an
abnormalit has occurred in the power sstem. However,
careull matching the available protection unctionalit oered
b ABB IEDs to the speciic power protection requirements
o the power sstem and its components not onl provides
the best power protection or the power sstem, but also
improves the perormance and the reliabilit o the power
protection sstem within it, thus minimizing the eects opower network aults and preventing the abnormalities or
disturbances rom spreading to the health parts o the power
network.
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Figure 18: Comparison between standard and high requirement feeders
Advantages o a complete power
protection sstem
Operating speed, sensitivit, selectivit and reliabilit are
the integral elements o the power protection sstem and
need mentioning. There is a strong correlation between
the operating speed o the power protection sstem and
the damage and danger caused b a power network
ault. Substation automation provides remote control and
monitoring capabilities, which speeds up the location o
aults, and thereore the restoration o the power suppl
ater a ault.Fast operation o the power protection IEDs alsominimizes post-ault load peaks, which together with voltage
dips increase the risk o the power d isturbance spreading
to health parts o the power network. The sensitivit o the
power protection must be adequate to detect relativel high
resistance earth aults and short circuits in the most distant
parts o the power network. Reliable selectivit is essential
in order to limit the loss o power suppl to as small an area
as possible, and to allow the abnormal or aulted part o the
power network to be reliabl located.
Corrective actions can then be directed to the abnormal or
ault part o the network, and the suppl can be restored as
rapidl as possible.
The power protection sstem must also have a high degree
o reliabilit. This also means that i or example a CB (circuit-
breaker) ails to operate, the backup power protection willidenti the ault and react.
Substation Automation (SA) puts the operator in perect
control o the substation. In addition to the SA sstem
improving the power qualit o the power transmission
and distribution network under normal operation, it
especiall improves the qualit o the power transmission
and distribution networks available power in a situation o
disturbance and during substation maintenance. A SA sstem
or SCADA (supervisor control and data acquisition) sstem
brings the ull beneits o numerical technolog into protection
and control o power networks. The terminals are easil set
and power protection parameters conigured to the speciicneeds o the power sstem through eas and sae access via
the operators workplace.
Single-unction and multi-unction
terminals
Correct power protection methods and comprehensive
unctionalit increase the perormance o the power protection
sstem.
The deinition o comprehensive unctionalit varies with the
requirements o the protected power network or sstem.
While single-unction power protection IEDs are suicient orsome network applications, more complex power networks
and sstems need advanced multi-unctional power protection
IEDs. Single-unction Power protection IEDs include a set o
power protection unctions or, or instance, a speciic eeder
application tpe.
The main advantages o these power protection IEDs are
redundanc and price. One or more single-unction power
protection IEDs would provide suicient protection in most
power protection application areas.
Highrequirement
Feedertype
IEDF
eature
s
Standard requirement
Infeed from both ends
Ring main feeders
Parallelfeeders
Feeders with
distributed
generation
Radial feeders
with reclosers/
sectionalizers
Radial
feeders
Distance
protection
Single line
diagramHMI*
Fault locator
Powerquality
monitoring
Communication
Auto re-closure
Single function * Human Machine
Interace
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11. Distribution automation
Transormer protection
The power transormer is one o the most important
components, as well as one o the most valuable individual
units in the power distribution network.
Thereore, the particular importance o preventing
disturbances in the power distribution sstem is almost
completel dependent on a unctioning power transormer.
Although high-qualit power transormers are highl reliable,
insulation breakdown aults occasionall occur. These aults,
appearing as short circuits and/or earth aults generall cause
severe damage to the windings and t ransormer core. The
damage is proportional to the ault clearing time so the power
transormer must be disconnected as quickl as possible.
The power transormer has to be transported to a workshop
or repair, which is a ver time-consuming process. The
operation o a power network where the power transormer
is out o service is alwas cumbersome. Thereore, a power
transormer ault oten constitutes a more severe power
sstem ault than a line ault, which usuall can be rectiied
rather quickl. It is extremel important that ast and reliable
protection IEDs are used to detect transormer aults and
initiate tripping.
The size, voltage level and importance o the power
transormer determine the extent and choice o monitoring
and protection devices to be used to limit the damage at a
possible ault. When compared to the total cost o the power
transormer and the damages caused b a power transormer
ault, the cost o the power protection sstem is negligible.
Recommended products
The recommended products or transormer protection are
part o ABBs Relion product amil o power protection
IEDs. These IEDs have been developed ater man ears
o experience gathered rom wide ranging application and
unctionalit requirements o ABB customers globall.
The popular RE500 series IEDs also plaed a big part in
ABBs success in this area.
Relion products have been designed to implement the
core values o the IEC 61850 standard. The genuine
implementation o the IEC 61850 substation communication
standard covers vertical as well as horizontal communication
between IEDs.
Figure 19: Transformer protection and control RET630
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TransformerProtectionandControlRET615 is a
dedicated transormer protection and control IED or two-
winding power transormers, unit and step-up transormers
including power generator-transormer blocks in utilit and
industrial power distribution sstems.
RET615 oers eight standard conigurations to match applied
transormer neutral earthing principles with either high
impedance or numerical low impedance restricted earth-ault
protection schemes. CT ratio dierences and phase shits o
all commonl emploed power transormer vector groups are
numericall compensated or. RET615 eatures also local or
remote control o the transormer HV side circui-breaker.
TransformerProtectionandControlRET630 is a
comprehensive transormer management IED or protection,
control, measuring and supervision o power transormers,
unit and step-up transormers including power generator-
transormer blocks in utilit and industr power distribution
networks. It provides main protection or two-winding power
transormers and power generator-transormer blocks.
Two predeined conigurations to match our tpical
transormer protection and control speciications are available.
The pre-deined conigurations can be used as such, or the
IED can easil be modiied or unctionall extended with reel
selectable add-on unctions to help ine-tune the IED to meeteven the most demanding individual application requirements
-exactl.
Figure 20: Transformer protection and control RET615
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11. Distribution automation
Motor protection
Motor protection is generall expected to provide overcurrent,
unbalance, earth-ault and short-circuit protection. However,
the undamental issue or motors is thermal protection, as
overheating is the worst threat to the motor.
Motors need to be protected not onl against electrical aults
but also against an improper usage. ABBs solutions ocus
on advanced thermal protection that prevents improper use
o the motors. The thermal overload protection is needed
to protect the motor against both short-time and long-time
overload and so it is o great importance or the perormance
o the motor. Overload conditions o short duration mainl
occur during motor start-up.
Improper use o a running motor does not necessaril damage
the equipment but shortens its liespan. Thereore, a reliable
and versatile motor protection sstem not onl protects
the motor but it also prolongs the motors lie-ccle, which
contributes to improving the return on investment o our
motor drive.
Figure 22: Motor protection and control REM615
Recommended products
The recommended products or motor protection are part o
ABBs Relion product amil o power protection IEDs.
These IEDs have been developed ater man ears o
experience gathered rom wide ranging application and
unctionalit requirements o ABB customers globall.
The popular RE500 series IEDs also plaed a big part in
ABBs success in this area.
Relion products have been designed to implement the
core values o the IEC 61850 standard. The genuine
implementation o the IEC 61850 substation communication
standard covers vertical as well as horizontal communication
between IEDs.
MotorProtectionandControlREM630 is a
comprehensive motor management IED or protection,
control, measuring and supervision o medium and large
asnchronous motors in medium voltage industrial power
sstems.
REM630 is a member o ABBs Relion product amil and
a part o its 630 product series characterized b unctional
scalabilit and lexible conigurabilit. It also eatures
necessar control unctions required or the management o
industrial motor eeder bas.
Figure 21: Motor protection and control REM630
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Figure 23: Motor protection REM610
REM630 provides main protection or asnchronous motors
and the associated drives. The motor management IED
is intended or circuit-breaker and contactor controlled
medium sized and large asnchronous motors in a variet
o drive applications, such as motor drives or pumps,
ans, compressors, mills, crushers, etc. The pre-deined
coniguration can be used as such or easil customized or
extended with add-on unctions, b means o which the motor
management IED can be ine-tuned to exactl satis the
speciic requirements o our present application.
MotorProtectionandControlREM615 is a dedicatedmotor IED perectl aligned or the protection, control,
measurement and supervision o asnchronous motors in
manuacturing and process industr. Tpicall, REM615 is
used with circuit-breaker or contactor controlled HV motors,
and contactor controlled medium sized and la rge LV motors
in a variet o drives. REM615 is available in three standard
conigurations including all the basic motor protection
unctions, voltage protection unctions and power and energ
measurements. Local or remote start/stop control o the
motor is also acilitated.
MotorProtectionRelayREM610is a motor IED or the
protection, measuring and supervision o medium sized and
large asnchronous LV motors and small and medium-sized
asnchronous HV motors in manuacturing and process
industr.
The REM610 IED can be used with both circuit-breaker and
contactor-controlled motor drives in a variet o applications.
Enhanced with an optional add-on card or RTD sensors
or thermistor elements, the IED can be used or direct
temperature measurement o critical motor items, such as
bearings and windings. It is also used or the protection o
cable eeders and d istribution transormers beneiting romthermal overload protection besides phase overcurrent
protection, earth-ault protection and phase unbalance
protection.
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11. Distribution automation
Station automation COM600
COM600, ABBs station automation device, is an all-in-
one communication gatewa, automation platorm and
user interace solution or utilit and industrial distribution
substations.
The gatewa unctionalit provides seamless IEC61850
connectivit between substation IEDs and network-level control
and management sstems.
The automation platorm with its logic processor makes
COM600 a exible implementation platorm or substation
level automation tasks. As a user interace solution COM600
accommodates web technolog based unctionalities providing
access to substation devices and processes via a web browser
based human machine interace (HMI).
Figure 24: Station Automation COM600
Product
The Station Automation COM600 oers web server
unctionalit, providing a human machine interace (HMI) or
local substation monitoring and control. Secure communication
enables the access o the substation HMI over the internet
or LAN/WAN or an authorized user with a standard PC and
a web browser. B connecting a laptop computer to the unit
locall, an HMI or ull monitoring and control unctionalit is
obtained on the substation level.
The Station Automation COM600 also provides gatewa
unctions or mapping data and signals between substation and
higher-level sstems such as SCADA, DSC.
The COM600 is designed or smooth sstem integration and
interoperabilit based on pre-confgured solutions utilizing
connectivit packages or ABB IEDs.
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WAN
REF610 REF610 REF615 REF615REF601 REF601
GPS
LAN1
Application and eatures
With their compact and robust design, the COM600 is well
adapted or harsh environments. It meets the IP4x degree
o protection b enclosure and contains no moving parts
subject to wear and tear. The COM600 is based on embedded
technolog or durabilit and maximum availabilit. The eatures
and compact dimensions o the COM600 enable it to be easil
installed in the Low Voltage Compartment o most UniGear
ZS1 panels. COM600 is suitable or both industrial and utilit
applications.
The COM600 incorporates OPC Server unctionalit, which
provides one entr point to all the inormation o a substation,
and the IEC 61850 support enables connectivit and seamless
communication with application-specifc equipment.
Figure 25: Overview of a system using Station Automation COM600
The COM600 is ull compliant with the IEC 61850 standard
or distribution automation. Thus it provides ull interoperabilit
with an IEC 61850 compliant IEDs, tools and sstems, which
simplifes sstem design and commissioning.
The commissioning o ABB IEDs is straight orward due to the
support o ABBs unique connectivit package concept, which
simplifes sstem confguration and reduces the risk o errors
in the sstem integration, minimizing device confguration and
set-up times.
For more detailed inormation, the technical and product guides
or COM600 are available at:http://www.abb.com/substationautomation
Ethernet switch
Ethernet switch
OPC Client/Server
Serial protocols
(DNP3, IEC 60870-5-101)
TCP/IC protocols
(IEC 61850, DNP3,
Modbus)
Serial protocols
(Modbus)
Secondar distribution switchgear
DISTRIBUTED
CONTROL
SySTEM
EMS/
SCADA
REMOTE AC-
CESS-
ENGINEERING
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Recommended products
ArcprotectionsystemREA101 with its extension units
REA 103, REA 105 and REA 107 are designed to be used
or the protection o medium and low-voltage a ir-insulated
switchgear.
The central unit tpe REA 101 operates independentl or
together with other REA 101 units. REA is the astest arc
protection sstem on the market, providing tripping times
down to 2.5 ms.
REA is equipped with a ast integrated overcurrent-sensing
element and is thus working independentl rom other eeder
protection units.
The REF615 and REF610 eeder protection IEDs include an
optional arc protection unction or the eeder cubicle.
Figure 27: Typical setup with REA 101 and subunits 103
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Selection table o relas
* With interace protocol converter
** HMI - Human Machine Interace
*** RTD - Resistive Temperature Detector
**** 27 i outputs are static outputs
1) REU615 with A coniguration, or voltage and requenc based protection
2) REU615 with B coniguration, or tap changer control
o = optional
s = secondar application
ApplicationREM RET REA
610 615 630 54_ 615 630 54_ 10_
Voltage based protection
Feeder application (Incomming and/or Outgoing) s
High requirement eeder application
Transormer application s
High requirement transormer application
Motor protection
High requirement motor protection
Generator & snchronous motor protection
Distance protection
Line dierential protection
Back-up Protection
rc protection o o
Communication Protocols
IEC61850-8-1 * * *
IEC60870-5-103
DNP 3.0
SPA
LON *
Modbus
Proibus * * *
Additional Functionalit
Fault locator
Auto re-closure
On load tap changer control
Disturbance recording
Withdrawable release mechanism
Single line diagram HMI**
Local control
Remote control
Condition monitoring
Power qualit monitoring
Analog inputs (VT/CT) -/4 -/5 4/5 -/7 3/9 -/3
Sensor inputs
Binar Inputs / Outputs 5/8 12/10 32/27 14/13 32/27 1/3
RTD*** / mA inputs 6 / - 6/2 8 / - 6 / 2 8 / -
mA outputs
11. Distribution automation
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Single-line diagram o tpical units
MF - Across the line motor starting TF - Transformer feeder CF - Capacitor bank feeder Reverseoperation*)
Star-deltamotorstarting*) Reactormotorstarting*) Auto-transformermotorstarting*)
M M
M M M
Note
*) Available in 2012
12. Tpical units
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Graphical smbols
Switch-disconnectorCircuit-breaker Contactor Socket and plugSwitch Isolating bar
FuseVoltage transformers Current transformers Busbar entryEarth Cable entry
Standard components Accessories Alternative solutionsKey to components
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Unit compartments
A - Contactor and cable compartment
B - Busbar compartment
C - Low voltage compartment
D - Gas duct channel
Width Depth
Height(1)
Heightwithgasexhaustduct
A
C C
A
B
D
D
Depth mm 1340
Height mm 2200 / 2595 (1)
Height with gas exhaust duct mm 2675 (2)
Width mm 400
Rated current A 400
MF
TF
CF
Typical feeder unit
(1) The height o the unit is a unction o the height o the low voltage compartment,
available in the 705 and 1100 mm versions.
(2) Other solutions are available, please contact our ABB representative.
13. Technical data
Units: 7.2 kV - 50 kA
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Notes
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Notes
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Contact us
Your sales contact: www.abb.com/contacts
More product information: www.abb.com/productguide
The data and illustrations are not binding. We reserve the right to make changes
without notice in the course o technical development o the product.
Copright 2011 ABB. All rights reserved.1VCP000405-Rev.
A
,en-Tec
hnicalcatalogue-2011-10-(UniGearMCC)gs