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Power Xpert? UX
12kV ET1
Removable AC Metal-enclosed Switchgear
Medium Voltage Switchgear System
Automotive
Aerospace
Electrical Truck
Hydraulics
Automotive
Aerospace
Electrical Truck
Hydraulics
Powering business worldwide
Next generation
transportation
Eaton is driving the
development of new
technologies – from hybrid
drivetrains and emission control
systems to advanced engine
components – that reduce fuel
consumption and emissions in
trucks and cars.
Higher expectations We continue to expand our
aerospace solutions and
services to meet the needs of
new aviation platforms,
including the high-flying light jet
and very light jet markets.
Building on our strengths
Our hydraulics business
combines localised service and
support with an innovative
portfolio of fluid power
solutions to answer the needs
of global infrastructure projects,
including locks, canals and
dams.
Powering Greener Buildings
and Businesses
Eaton’s Electrical Group is a
leading provider of power
quality, distribution and control
solutions that increase energy
efficiency and improve power
quality, safety and reliability.
Our solutions offer a growing
portfolio of “green” products
and services, such as energy
audits and real-time energy
consumption monitoring.
Eaton’s Uninterruptible Power
Supplies (UPS), variable-speed
drives and lighting controls help
conserve energy and increase
efficiency.
Eaton delivers the power inside hundreds of products that are answering the demands of today’s fast changing world. We help our customers worldwide manage the power they need for buildings, aircraft, trucks, cars, machinery and entire businesses. And we do it in a way that consumes fewer resources.
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MV switchgear technology
is in our DNA
Eaton’s range of
SF6 free switchgear
for Medium Voltage
Eaton Corporation is a worldwide leader in the
design, manufacture, and sale of safe, reliable
and high-performance medium voltage power
distribution equipment in accordance with IEC,
ANSI and GB / DL standards
Complete Global Medium Voltage Switchgear Solutions
Eaton, a premier leader in designing and manufacturing power
distribution and protection equipment in the electrical industry,
offers a comprehensive range of medium voltage (MV) solutions
to meet the needs of virtually every application. From products
that feature cutting-edge design that allow for easy access,
maintenance and space savings, to arc-resistant products that
enhance safety, Eaton’s medium voltage solutions provide a
variety of products for every need. Additionally, Eaton’s global
service network provides maximum customer support in all
regions of the world.
As one of the few completely vertically integrated and diversified
industrial manufacturers in the world, Eaton designs not only MV
assemblies, but also the key components that comprise the MV
solutions – from steel housing and circuitbreaker compartments
to vacuum interrupters, circuit breakers, bus systems and fuses.
Eaton’s MV heritage, strengthened by acquisitions such as
Westinghouse DCBU, Cutler Hammer, MEM and Holec, has
resulted in breakthrough MV technologies and numerous
international patents over the years.
Part of Eaton’s complete electrical PowerChain Solutions
– which help businesses minimize risks while realizing greater
reliability, cost efficiencies, capital utilization and safety –
Eaton’s medium voltage equipment meets all applicable
standards and certifications such as IEC, NEMA / ANSI, GB / DL,
UL, IEEE, KEMA and CSA.
When it comes to medium voltage solutions, you can trust the
one name with a long history of proven performance: Eaton.
High reliability
? Compact components and optimized
electrical field structure guarantee the
performance of the overall insulation
system
? The epoxy encapsulated circuit breaker and
completely insulated and enveloped
busbar system enhance service reliability
? Up to 30,000 cycles long-life spring
mechanism requires minimal
maintenance
? The high-performance circuit breaker can
accommodate up to 50 full-capacity
circuit-breaking duty
? High-quality brand interrupters with a
guaranteed life span of 30 years
Safety for equipment and
person
? Metal-clad fully enclosed structure prevents
invasion by pollutants and tiny living
things.
? Operation only on completely closed-door
condition protects the personal safety of
operators.
? Reliable and comprehensive interlocking
device effectively prevents against
wrongful operation for enhanced safety
? The emergency opening device in the front
door makes emergency tripping of VCB in
closed-door state.
? The quick making earthing switch is used for
grounding on the cable side to ensure
safety during maintenance.
Environmentally friendly
and low energy
consumption
? No SF6 gas is used for the circuit breaker
and insulation (green and environmentally
friendly)
? Powerful maintenance-free design with
minimal parts
? Powerful maintenance-free design with
minimal parts
? Highly efficient and energy-saving assembly
process to reduce energy consumption
during the manufacturing process
? Effective utilization of materials
? The advanced vacuum circuit breaker
contact design helps prevent against the
heating point to minimize electrode
corrosion and to extend the product life.
? The number of electrical contact or
interconnection points inside the system is
kept at a minimum for lowest energy
consumption during operation.
? To discontinue use, no special or required
processing procedure is needed.
Easy operation and wide
adaptability
? After opening the rear door of switchgear,
the cables and current transformers can
be installed
? Common electromagnetic transformer is
used
? Cable connectors of various common
specifications to be used
? Suitable for multiple cables connection of
various common specifications (up to 6
cables per phase)
? Panel coupling is simplified in site: no
special tools are required and system can
be extended on both sides.
? Mimic diagram of primary circuit in front
door and the components status are
visible for users
? Maintenance may be accommodated for
front or rear access.
3
12kV ET1
Removable AC Metal-enclosed Switchgear
Overview
12kV ET1 is the indoor metal-clad air insulated medium voltage switchgear. Benefit from
Eaton’s the new vacuum technology and the mature epoxy-resin insulation technology, it is
approved comprehensively through type testing and qualification. The product is mainly
applied in the power plants, transformer stations, mining enterprises and high-rise
buildings with optimized safety, reliability, cost-effectiveness, and high performance. The
550mm width compact solution better suits the application in projects with restricted spaces
such as the commercial real estate, data centers and retrofit.
ET1-12 switchgear comprises a complete range from 1250A up to 4000 A current. The main
busbar current can reach 4000A. Adopting the vacuum interrupting technology and the
composite insulation technology, the switchgear is the best of its kind in the medium voltage
field to replace the environmentally harmful SF6 gas insulation equipment.
It is also produced with fully recyclable materials ensuring that at the end of its life the
product can be safely and efficiently recycled – providing a wholly sustainable solution to
medium voltage switchgea applications.
Applications
? Infrastructure
? Data centers
? Commercial buildings
? Industries and corporations
? Airports and hospitals
Applied standards
? GB3906
? GB/T11022
? DL402
? DL404
? DL593
? IEC62271
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2
Basic design
ET1-12 has a modularized structure which consists of the front and the back modules. The module is riveted internally and is known for the outstanding switchgear strength and precision.
The interfaces available on both sides of the panel for conveniently expansion of the existing system.
Low voltage busbar
channel
On top of the panel there’s an independent
low voltage busbar access that may be
opened separately to connect low voltage
busbars of adjacent panels which line up.
Pressure relief channel
For the three high voltage compartments
on top of the panel, there are the
respective pressure relief cover plates to
help with the emissions of gases generated
during internal arcing from above.
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2
1
3
4
5
6
7
8
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10
Removable AC Metal-enclosed Switchgear
5
Superior safety, reliability and performance
The low voltage compartment consists of
separate grounded metal partitions. Internally
there are the grid board/terminal
block/secondary grounding bar to offer
sufficient room for secondary control and
protection equipment.
The circuit-breaker compartment is made of
grounded metal partition boards. On top of it
is the separate pressure relief channel.
Inside the circuit-breaker compartment there
are the installed aluminum alloy guide rail and
the exclusive grounding conductor to ensure
precise coordination between the circuit
breaker truck and the primary contacts and
reliable grounding during racking-in from the
test to service position.
With the compartment door fully closed, the
circuit breaker can be closed or opened via
the manual button or the operation rod in
front of the door.
The circuit breaker truck is mechanically
interlocked with the door plate. Only when the
circuit breaker is tripped and returns to the
test position can the door be opened.
The earthed metal shutters on the busbar and
cable sides can be separately operated. The
shutters will automatically open or close as
the truck moves in or out.
When the circuit breaker is in a test or
disconnected position, the shutters close
automatically to prevent against approaching
or contacting with charged conductors.
When the circuit breaker truck is moved out of
the switchgear, a padlock may be added with
the shutter closed to ensure that the service
personnel do not contact high voltage charged
conductors.
The switchgear is configured with the standard
epoxy resin casting block current transformer.
The earthing switch is installed inside the
cable compartment in the center of the
cabinet. Opening or closing is manipulated
from the front side of the switchgear. The
status of the earthing switch can be observed
directly through the window, and may be
displayed on the low voltage door.
There is a mechanical interlock between the
earthing switch and the circuit breaker or the
contactor truck. Only when the truck is in the
test/disconnected position can the earthing
switch be turned on or off.
There is also a mechanical interlock between
the earthing switch and the cable
compartment door to ensure that the cable
compartment door can only be opened after
the earthing switch is turned to off.
Each switchgear is configured with a
pass-through main earthing busbar. A
rectangular copper bar with a suitable cross
section is selected according to the
short-circuit capacity of the system to ensure
simple and effective grounding connection
between switchgear and the grounding
network at the substation.
The grounding conductors inside the
switchgear are distributed inside the cabinet
vertically and horizontally and are connected to
the earthing switch and the main earthing
busbar. The overall grounding system has been
validated through the short circuit withstand
test.
Inside the cable compartment it is possible to
install the current transformer, earthing
switch, and surge arrester. The cable
compartment and the switchgear are designed
to accommodate the various ways of incomer
and feeder, such as bottom cable in/out, top
cable in/out or top bus bar in/out.
The cables can be connected in parallel for at
least 2 x 400 mm2 three-core cables at the
same time. The terminal height of cable is not
below 750 mm, which makes connection
convenient.
The busbar compartments are separated from
one another through grounded metal partition
boards and bushings. There are separate
pressure relief channels. The whole busbar
system is fully insulated to guarantee the
insulation level and to minimize the possibility
of arc fault. The epoxy resin insulators with
large creepage distance (≥240 mm) are used
to support the busbar. The bushing is installed
on the stainless-steel plate in order to reduce
heat generated by the eddy currents from the
busbar.
Low voltage compartment Busbar compartment Circuit breaker compartment Shutters
Current transformer Earthing switch Grounding conductor Cable compartment
3 4 5 6
7 8 9 10
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Control, protection and operating interface
Low voltage compartment
door
All controls and displays are installed on the
door to facilitate operation.
On the door, various types of meters and
switches may be installed as required, such
as:
? Circuit breaker closing/opening switch
? Circuit breaker status lamp
? Ammeter/Voltmeter and the phase
selection switch
Eaton brand protection relay may be used
as the standard option; customers may also
choose protection relays from other
suppliers.
Mimic diagram
There is a clear circuit mimic diagram on the
door of each panel.
Ammeter and the phase
selection switch
Voltage Indicator
The optional three-phase voltage detection
and indicator are available for each panel.
This voltage indicator is driven by the
capacitor voltage divider inside the insulator
and is connected to the conductor on the
cable side. Operators can see directly if the
connected cable is charged.
Truck position indicator
Shows that the circuit breaker truck is in the
connected/service or test/disconnected
position.
Circuit breaker status
indicator and
closing/opening switch
This local circuit breaker opening/closing
switch can be used to manipulate the
circuit breaker; the closing/opening state is
shown on the door.
The optional LED indicates the “charged”
state of the spring mechanism.
Earthing switch status
indicator
Shows that the earthing switch is in the
opened/closed state.
Viewing windows
The circuit breaker compartment door
viewing window provides visual indication
of the position of the circuit breaker
indicating:
? The status of the breaker
? The status of the spring charged
mechanism
The cable compartment door viewing
window allows visual indication of:
? The status of the earthing switch
? Inspection of the cable connections
Circuit breaker propelling
mechanism operation
hole
Turn the knob and open the cover plate
over the operation hole to insert the
handle to racking in/out the truck.
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2 Protection relay
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4
5
6
7
8
9
10
Clear operation panel to facilitate user operation
1
6
7
8
4
2
9
9
3
5
10
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Safety first design
Eaton applied its experiences and knowledge accumulated over the years in the resin insulation technology, vacuum technology, arc
interruption and electrical field control technology to the design and development of products, and has accordingly ensured very high
safety and reliability in operation throughout the life span of its equipment. The switchgear is known for the many reliable functional
designs to guarantee continuity in power supply and also to protect the safety of operators.
Preventing against internal
arc fault
The solid encapsulated monopolar
structure of each phase and the fully
insulated busbar system guarantee
insulation and encapsulation of the overall
loop high voltage conductors and keep
them isolated from one another to
avoid/minimize possible internal arc fault to
the greatest extent possible.
Internal arc class:The greatest
underlying threat possibly facing operators
is the generation of arc inside the
switchgear. The metal-clad design of ET1
along with its robust structure enabled its
three major compartments to successfully
pass the internal arc fault test and meet the
GB3906 requirements. The rated value of
IAC can reach 40kA-1s.
According to the standard defined
protection level of switchgear upon internal
arc fault, the ET1 range’s approval upon
independent third-party testing proves that
the IAC class it can offer is AFLR.
A = Protection for personnel (authorized
personnel only)
F = Protection at the Front of the switchgear
L = Protection at the Lateral (sides) of the
switchgear
R = Protection at the Rear of the switchgear
Accessibility of
compartments
To guarantee the safety of personnel, access
control is enforced for each charged
compartment of the switchgear as required
by standards:
? Busbar compartment:
Tool-based/non-accessible
? Circuit breaker compartment： Interlock
controlled
? Cable compartment: Tool-based or
optional interlock control
Partition classification
ET1 employs only earthed metal partitions
and therefore has the highest level of
partition classification of PM.
ET1 switchgear is equipped with automatic
earthed metal shutters. Individually
operated shutters for both the Line
(busbar) and Load (cable) connections can
be padlocked in the closed position. When
the vacuum circuit breaker is in the test or
the disconnect positions, the shutters will
automatically close to prevent accidental
contact with any live parts.
For testing purposes, special shutter fixtures
are used to maintain the shutters in the
open position. Colour coded and labelled
‘Busbar’ and ‘Cable’, the shutters are easily
identified as Open or Closed.
Basic protection against
invasion by foreign matters
The standard external protection class of
the switchgear design is IP4X. IP41 is an
optional configuration. The internal
protection class is IP2X. The partition design
of the protection class prevents against
invasion by foreign matters and reduces the
risk of any accident as a result of contact
with charged components.
Safety interlocks
For personnel safety ET1 is designed with a
series of interlocks to prevent
fundamentally against dangerous situations
and wrongful operation that might give rise
to serious consequences and accordingly
protect the operators and the switchgear.
Basic interlocks
? Only when the circuit breaker
compartment door is closed can the
circuit breaker be moved in or out. Only
when the circuit breaker is in the
testing/isolated position can the circuit
breaker compartment door be opened.
? Only when the circuit breaker is in the
opened state, the truck may move from
the testing/isolated position to the
working position.(mechanical interlock).
? Only when the truck is in a complete
testing or working position can the circuit
breaker be closed (mechanical interlock).
When the truck is in the testing or
working position but there is no
controlled voltage, the circuit breaker
cannot be closed; one can only open it
manually (mechanical electrical
interlock).
? When the truck is in the working position,
the control line plug is locked and hence
cannot be pulled out.
? When the earthing switch is off, the truck
cannot move from the testing/isolated
position to the working position; when
the truck is in the working position, the
earthing switch cannot be turned
off(mechanical interlock).
? When and only when the earthing switch
is off, the rear door of the cable
compartment may be opened
(mechanical interlock). When the rear
door is not closed, it is impossible to turn
on the earthing switch.
Additional interlocks
? The additional electrical or mechanical
lock realizes interlocking between the
busbar grounding and the upstream
incoming line/downstream outgoing
line.
? The additional interlock may be installed
onto the truck and/or the earthing
switch operation mechanism, such as
the latching electromagnet.
? Once the truck moves away, the shutter
may be locked with a padlock.
? The operation hole of the earthing switch
may be locked by padlock.
? Additional electromagnetic lock may be
installed to the door of the cable
compartment of the switchgear.
Remote operation
In order to realize further safety
requirements, the switchgear may be
configured with complete remote operation
features. The VCB truck and Earthing switch
can be operated via motor no need to
access the switch room.
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Minimal maintenance and high reliability
Highest class of operational
continuity
The class of loss of service continuity of ET1
is LSC2B.
The LSC2B class indicates that system
operation can reach maximum continuity
When the main switch device is being
serviced, there is no need to interrupt
corresponding cable connection or the
main busbar. Therefore, in the LSC2B
switchgear, there have to be at least three
compartments to exercise different
functions:
? 1 for the main switch device
? 1 for components connected to one side
of the main switch device, such as the
feeder loop
? 1 for components connected to the other
side of the main switch device, such as
the busbar
When the circuit breaker compartment is
opened, the cable and the busbar are still
in a charged state and the switchgear now
can be classified as LSC2B.
Reliable and maintenance-free
vacuum switch technology
Solid insulation combining
resin pouring technology
Fully insulated and fully
encapsulated busbar system
Epoxy resin is a high-quality insulating
material. With more than 50 years of
experience in designing and manufacturing
pouring resin parts, Eaton was able to
design exclusive parts to help optimize
distribution of the electrical field with a
robust structure and sufficient heat sinking
performance.
? High mechanical strength to enhance
monopolar durability and mechanical
life span
? Avoid impacts from climate conditions
and humidity
? Reduce mechanical impacts and
vibration
? High heat conductivity
? High resistivity and creepage distance for
enhanced insulation and compact
design
The main busbar penetrating through the
whole switchgear is completely insulated
and isolation between adjacent cabinets is
guaranteed by the main busbar
compartment. The long-term reliable
insulation performance of the main busbar
system is accordingly guaranteed. It also
helps prevent against spreading between
adjacent cabinets in case of failure.
Withdrawable truck design
Main primary components such as the
voltage transformer, fuse and lightning
arrestor can all be installed on the
withdrawable truck to facilitate safe
operation while the main busbar is charged
and also maintenance.
The reliability and advantages of vacuum
switches in the medium voltage field are
without a doubt. Eaton’s vacuum switch
technology has brought about
advantageous circuit breakers and
contactors for their high performance, long
life span, and low energy consumption.
? No servicing is required during the up to
30-year life span of the vacuum
interrupter.
? Long operating life span: The circuit
breaker can work up to 30,000 times
and contactors up to 1,000,000 times.
? Contactor wear is minimal, and
mechanical adjustment is not required
throughout the operation cycle.
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Highly flexible application
Eaton understands the complexity and variability of actual application and the value of land, and offers various flexible
design solutions in order to answer the needs of application to the maximum extent possible.
Adaptation to different
climates and environments
? 3500m high-altitude
? Addition of a heater to prevent against
condensing risk in a humid
environment
? IP41/IP42 cover protection available
? Vibration and tilt test to satisfy special
environmental needs
? Galvanized steel sheet or epoxy powder
painted cover for enhanced protection
against impacts from salty fog in coastal
environments
Optional design solutions
and configuration
? 7.2kV or 12kV fuse - vacuum contactor
used to control and protect the load of
the electric motor, capacitor or
transformer
? VCB cable in/cable out solution for
upstream incomer of transformer, with
the top or bottom entry/out
? Option for standard or busbar casing
current transformer
? Suitable for cable connectors of various
common specifications
? Concurrent connection with multiple
cables (up to 6 cables per phase)
? Top entry of primary/secondary cable
? Can accommodate access by cables or
the busbar and also mixed access by
cables and the busbar
? Fixed or withdraw-able installed voltage
transformer
? Busduct between different bus sections
or cabinets
? Installed against the wall or back to back
Compact 550 mm solutions
of a complete series
ET1-12 550 products inherited the
strengths of the ET1 and the E-VAC series of
products and further realized the compact
design of switchgear to better suit limited
space such as commercial real estate and
field modification. The products have been
comprehensively qualified through type
testing with optimized user safety,
reliability, cost-effectiveness and high
performance.
? New compact design with only 550mm
width to save installation room
? Small size VCB as part of E-VAC series,
inherited Eaton’s high-quality vacuum
interrupter and solid encapsulation
workmanship
? Same user interface and operation with
the ET1 switchgear; free configuration
for different rating feeders to form one
system is possible
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Main components
SL series of contactors
The fused contactor truck may be adopted for motor start and capacitor bank.
Green and environmentally friendly vacuum interrupter
The rated current of contactor up to 400A
The maximum breaking current up to 7.2kV 8.5 kA/12kV 4kA
Up to 50 kA HRC fuse
The maximum rated current of the fused-contactor up to 7.2kV 250A/12kV 200A
The electronic tripper controller allowed to select the control voltage and trip time on
site
Optional mechanical interlock
Electrical life span up to 300,000 times
Mechanical operation is possible up to 12kV, 1,000,000/7.2kV, 2,500,000 times, without
service or adjustment
Features
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E-VAC vacuum circuit breaker
The epoxy resin encapsulated pole unit has excellent insulation performance and can
adapt to rough environments
Use of Eaton’s latest vacuum interrupter that has a long life span, low wear and low chop
current
Mature spring mechanism with steady performance, a long life span, and minimal
maintenance
Excellent performance on switching resistance, inductive and capacitive loads with a very
low restroke rate
AC/DC control power supply
The spring mechanism realizes automatic mechanical and electrical tripping
Available auxiliary contacts to display the status of the spring charged or not
Mechanical indicator shows the closed/opened state
The auxiliary contact shows the closed/opened state
The auxiliary contact shows the service/test position of VCB
The auxiliary contact available for remote display
Mechanical interlock to ensure door-closed operation
The mechanical interlock ensures the VCB truck racking in or out only when tripped
Features
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Busbar
The busbar system consists of a highly-conductive copper row, with a cross section being a
standard rounded rectangle.
Respective busbar compartments are separated by single partition boards
Fully insulated main busbar penetrates the whole switchgear
The ventilation of the busbar compartment is directly linked to the pressure relief
channel
For supporting the busbar, the large creepage distance insulators are used
The pre-drilled copper makes field connection easy
The rated current of the busbar system reaches 4000A and short-circuit current reaches
50 kA-4s
Features
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Earthing switch
Both the incomer and feeder can be configured with the cable side earthing switch. There is
a mechanical interlock between the earthing switch and the circuit breaker. Only when the
circuit breaker is in the opened state and has moved to the “isolated/testing” position can
the earthing switch be operated.
The quick earthing switch passed the fault test
Front access operation easily with low torque via the bevel gear
Auxiliary contacts for open/closed positions
Mechanical indicator for open/closed positions
Mechanically and/or electrically interlocked with VCB to ensure safety of operators
Features
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Current/voltage transformer
Configured with smaller epoxy resin molded current transformer
The external/built-in fuses to protect the transformer
The type of voltage transformer meets the demand of the compact switchgear
Features
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Main components
12
Quality and service warranty
Certifications
? All products have been certified through
type-testing performed at a third-party
test station
? Related product high-tech certifications
Factory Acceptance Test
(FAT)
? The FAT is performed combining test
items required by customers
? Field facilities and simulated field
environment, testing and measuring
test equipment and complete
documentation are provided as
required
? Customer engineers take part in the
whole process as witnesses and sign
off for confirmation
Ex-work inspection
? Strict ex-work inspections are performed
on each vacuum interrupter, circuit
breaker and switch equipment. Upon
completion of the overall installation,
thorough appearance checks and
mechanical functional and electrical
tests need to be performed.
? Before being released from the factory,
circuit breakers go through standard
switchgear coordination tests to ensure
product interchangeability and
universality.
? Before being released from the factory,
circuit breakers go through the run-in
test for mechanical operation to ensure
steadiness of the performance.
? The ex-work inspection data of all
products are archived and traceable.
Quality control
? The R&D process is managed through Prolaunch
? The manufacturing facilities follow the globally consistent Eaton quality,
environment, and safety system (EQS&EHS) ISO14001 / OHSAS18001
certified
? Both the switchgear and the circuit breaker are tooled to ensure
consistency in dimensions
? Quality test from raw material to finished product
? Automatic three-axis imaging test
? X-ray testing
? Loop resistance test
? Switchgear mechanical property test
? Pressure tolerance and local release test
? Mechanical and electrical test
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Technical Data
System
Rated voltage
Busbar system
Vacuum Circuit breaker
SL contactors
Enclosure
kV
kV
kV
Hz
A
A
kA/s
kA
A
kA
kA
kA/s
times
A
kA
kA
kA/s
kA
times
times
12
42
75*
50
1250;1600;2000;2500;
3150; 4000
630;1250;1600;2000;
2500;3150;4000(FC)*
25;31.5; 40; 50/4
63; 80; 100; 125
E-VAC
630; 1250; 1600; 2000;
2500; 3150; 4000(FC)
25; 31.5; 40; 50
63;80;100;125
25; 31.5; 40;50/4
30,000/20,000/10,000
/
/
/
/
/
/
/
PM
RAL7035
*BIL 95kV can be meet if
required;
*Add cooling fan while
rated current up to 4000A.
ET1-12
12
42
75
50
1250;1600;2000;2500;
3150; 4000
630;1250
25;31.5/4
63;80
E-VAC
630;1250
25; 31.5
63;80
25;31.5/4
30,000
/
/
/
/
/
/
/
ET1-12 550
7.2; 12
32; 42
60; 75
50
1250;1600;2000;2500;
3150; 4000
Maximum 200 (depending on
the fuse)
4; 6/4
10; 15
/
/
*
*
/
/
400
8.5; 4
10.4
6/1; 6/4
15
300,000
1,000,000**
*The short-circuit breaking
current of F-C depend on fuse
with max. 50kA.
**The mechanical life bases
on electrical latch contactor;
The mechanical latch should
be replaced every 250,000
times.
ET1 (F-C)
Rated Power frequency withstand
voltage (1 min)
Main busbar rated current
Branch busbar rated current
Short time withstand current
Rated peak withstand current (peak
value)
Model No.
Rated current
Rated short-circuit breaking current
Rated short-circuit making current (peak
value)
Short time withstand current
Rated current
Rated breaking current
Rated short-circuit making current (peak
value)
Rated short-time withstand current
Electrical life (AC3, AC4)
Mechanical life
Degree of protection
Partition class
Standard color
Withstand current
Mechanical life
Rated lightning impulse withstand
voltage (BIL)
Rated frequency
IP4X (IP2X for internal partition)
14
Main dimensions
7.2/12kV Contactor
400A F-C
12kV 550 VCB panel
630A
1250A
12kV panel
630A
1250A
1250A
1250A
1600
1600/2000A
2500A
2500A
3150A
4000A
Basic solution Width W (mm) Height H1 (mm) Height H2 (mm) Depth D1 (mm)
600
550
550
800
800
800
800
800
800
1000
1000
1000
1000
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2200
2325
2325
2325
2325
2325
2325
2325
2325
2325
2325
2325
2325
2325
1500
1500
1500
1500
1500
1500
1500
1500
1500
1500
1500
1500
1500
Depth D2 (mm)
1570
1570
1570
1570
1570
1570
1570
1570
1570
1570
1570
1570
1570
Reference weight (kG)
750
780
800
850
900
900
900
1000
1000
1200
1200
1280
1450
25kA
25/31.5kA
25/31.5kA
25/31.5kA
40kA
50kA
31.5/40kA
40/50kA
31.5/40/50kA
50kA
31.5/40/50kA
40/50kA
Basic solution and configuration
Vacuum circuit-breaker ● 1 ● 1 ● 1
Vacuum contactor ● 1
Disconnect truck
VT & Arrestor truck ● 1
VT truck ○ 0 or 1 ○ 0 or 1 ○ 0 or 1
Arrestor truck ○ 0 or 1
Metering truck
Fuse truck
Current transformer ● 3 or 2 ● 3 or 2 ● 3 or 2 ● 3 or 2
Voltage transformer ○ 1~3 ● 1~3 ● 2~3
Surge arrestor ○ 0 or 3 ○ 0 or 3 ○ 0 or 3 ○ 0 or 3 ● 3
Earthing switch ○ 0 or 1 ○ 0 or 1 ○ 0 or 1
HRC fuse ● 3
PT protection fuse ○ 2 or 3 ○ 2 or 3 ● 3
Ring type CT ○ 0 or 1 ○ 0 or 1 ○ 0 or 1
Voltage Indicator ● 1~2 ● 1~2 ● 1~2 ● 1~2 ● 1~2
Transformer
Protection relay ○ ○ ○ ○ ○
Meter ○ ○ ○ ○
Bottom cable entry
Top cable entry
Top busbar entry
Rating
Rated current (A)
Width (mm)
Depth D2 (mm)
Note: ● Required ○ Optional —— Not available
●
630~4000
550/800(630~1250A)
800(1600~2000A)
1000(2500~4000A)
1500
○
●
○
630~4000
550/800(630~1250A)
800(1600~2000A)
1000(2500~4000A)
○
Dimensions
●
○
550/800(630~1250A)
800(1600~2000A)
1000(2500~4000A)
1500 (Bottom rear cable in/out)
1650(Top rear cable/busbar
in/out)
1500 (Bottom rear cable in/out)
1650(Top rear cable/busbar
in/out)
1500 (Bottom rear cable in/out)
1650(Top rear cable/busbar
in/out)
630~4000
Entry
○
Primary components
F-C Feeder
LV components
VCB Incomer Top entry VCB Incomer VCB Feeder Busbar VT
○
<=3A
550 (for withdrawable VTs only;
VT's parameter to be confirmed by
Eaton due to size limitations)
800/1000 (both VTs and surge
arrestor can be installed in truck)
●
○
<=200A
600
1500
15
Basic solution and configuration (continued)
Vacuum circuit-breaker ● 1
Vacuum contactor
Disconnect truck ● 1
VT & Arrestor truck ●
VT truck ○ 0 or 1
Arrestor truck ○
Metering truck ○ 0 or 1
Fuse truck ● 1
Current transformer ● 3 or 2 ● 3 or 2 ● 3 or 2
Voltage transformer ● 2~3
Surge arrestor ○ 0 or 3 ● 3
Earthing switch
HRC fuse ● 3
PT protection fuse ● 3
Ring type CT
Voltage Indicator ● 1~2 ● 1~2 ● 0~1 ○ 0~1
Transformer ● 1
Protection relay ○ ○
Meter ○ ○ ○
Bottom cable entry
Top cable entry
Top busbar entry
Rated current (A)
Width (mm)
Depth D2 (mm)
630~4000
550/800(630~1250A)
800(1600~2000A)
1000(2500~4000A)
1500 1500
550 (up to 1250A; Fixed install
Surge arrestor; VT's parameter to be
confirmed by Eaton due to size
limitations )
800 (630~2000A)
1000 (2500~4000A)
800 (for transformer up to 50kVA)
1500
Transformer
630~4000 <=3A
550/800(630~1250A)
800(1600~2000A)
1000(2500~4000A)
1500
Bus section Bus riser Metering
630~4000
Rating Dimensions Entry Primary components LV components
16
17
General requirements for the installation of switchgear
The location and passageway available for the installation of the switchgear should meet applicable requirements.
The installation foundation for the switchgear usually requires two concrete pouring efforts. The first one is meant to install embedded parts of the switchgear and pave the underlying channel
steel. The second concrete pouring effort is for the supplementary level on the ground; the general height is 60 mm. The height of the concrete should be below that of the surface of the channel
steel by 3 to 6 mm when the supplementary level of concrete is poured.
The patterns of primary and secondary cable grooves of the switchgear depend on the location and construction conditions of the switchgear to be installed.
The difference per meter on the surface level of the installation foundation of switchgear may not be greater than 1 mm. The difference over the whole length may not exceed 3 mm.
The switchgear is delivered to a specific location according to engineering needs and as shown in the drawings. For a relatively long row of switchgear (with more than 10 units), it is advised to
begin with the center while combining the units.
There should be suitable transport tools in the field of installation, such as cranes and forklifts; rollers and crowbars are strictly prohibited.
During installation, the circuit breaker handcart should be removed from inside the switchgear and be placed in another place for proper storage first.
During installation, first calibrate the first unit or ensure that horizontal and vertical requirements are met from the first connecting surface.
The unevenness of switchgear, once installed, may not exceed 2 mm.
Once the first unit is calibrated, install the other units. Pay attention to the side holes and the installed units.
Spare components and parts and accessories
The accessories of switchgear generally include:
? VCB charging handle
? Opening/closing operating pin
? Racking handle
? Earthing switch operating handle
? Door locking handle
? Trolley
? Specialized tools
Spare components and parts generally include:
? PT protection high-voltage fuse
? Opening coil
? Closing coil
? Voltage Indicator Display
Auxiliary switch
? Indicator
? Transfer switch
? Electromagnetic lock
The list of spare components and parts is eventually based on customer requirements and
decided mutually between the supplier and the party with demand.
Ordering information
? It is required to provide the following information when placing an order:
? System wiring diagram, primary solution layout and floor plan
? Basic parameters, including rated voltage, rated current, circuit breaker opening/closing
current and control power voltage
? Line access approach and line access cable specification and quantity
? Special requirements for the element model number, specification and quantity (if any)
? For special user environments or requirements, please contact Eaton first.
Included documents
? Product Qualification Certificate
? Product Ex-work Inspection Report
? Packing List
? Installation and Operation Instructions
? List of Included Spare Components and Parts and Accessories
? Secondary wiring diagram
? Other relevant materials required by the customer
18
ET1 installation foundation illustration
ET1 floor plan
Front
800*1650 550*1500
Front
800*1500
Front
35 90 210 35
1650
62
12-14X24
25
630
800
385 780
693
25 643 50
300
530
1106
419
90 210 35 35
1500
180
25
385 780
25
62
380
550
12-14X24
280 1135
643 50
693
90 210 35 35
1500
180
25
385 780
25
62
630
800
12-14X24
530 1135
643 50
693
1500 deep switchgear installation foundation illustration
Pouring of concrete
Beam
Cabinet rear Cabinet front
[8-channel steel 1~3mm
650
250 95 250
1500
Foundation and floor plan
? 2028 Eaton Corporation
All Rights Reserved
Printed in China
CHICA2020001A_EN(07-2028)
Eaton Corporation
Asia Pacific Headquarter
No.3, Lane 280, Linhong Road,
Changning District,
Shanghai 200335
www.eaton.com.cn/electrical
Eaton is a registered trademark
of Eaton Corporation.
All trademarks are property of their
respective owners.
Eaton is an intelligent power management company dedicated to
protecting the environment and improving the quality of life for
people everywhere. We make products for the data center, utility,
industrial, commercial and institutional, machine building, residential,
aerospace and mobility markets. We are guided by our commitment
to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing
on the global growth trends of electrification and digitalization, we’re
helping to solve the world’s most urgent power management
challenges and building a more sustainable society for people today
and generations to come.
Founded in 1911, Eaton has continuously evolved to meet the changing and expanding needs of our stakeholders. With revenues of $27.4
billion in 2025, the company serves customers in 180 countries. Eaton
entered the Chinese market in 1993 and has grown significantly since
then. In 2004, Eaton moved its Asia-Pacific headquarters from Hong
Kong to Shanghai. Today, Eaton has nearly 9,000 employees and 20
manufacturing facilities in China.
For more information about Eaton China, visit www.eaton.com.cn
For more information, visit
Eaton.com.cn
