—
MEDIUM VOLTAGE SERVICE
VD4G
Installation and operating instructions
15 kV - 1250... 3150 A - 25...40 kA
• Make sure that the rated performance of the
apparatus is not exceeded during service.
• Make sure that the personnel are provided with
this manual and all the information required for
operating the apparatus correctly.
• Pay special attention to the information in the
manual highlighted by the following symbol:
—
For your safety!
• Make sure that the installation room (space,
divisions and environment) is suitable for the
electrical apparatus.
• Make sure that all the installation, putting into
service and maintenance operations are carried
out by skilled personnel with in-depth knowledge
of the equipment.
• Check that all the installation, service and
maintenance operations comply with the
regulations and laws in force so as to ensure that
the installations are constructed in accordance
with the rules of good workmanship and safety in
the work place.
• Strictly comply with the instructions in this
manual.
Responsible behavior safeguards your own
and others’ safety!
Please contact the ABB Assistance Service for any
further requirements.
Contents
For your safety! 1
I. Foreword 2
II. Environmental protection program 2
1. Packing and transport 3
2. Checking on receipt 4
3. Storage 5
4. Handling 6
5. Description 7
6. Instructions for circuit-breaker switching 23
7. Installation 26
8. Putting into service 30
9. Maintenance 32
10. Application of the X-ray emission Standards 36
11. Spare parts and accessories 37
12. Circuit diagrams 38
13. Overall dimensions 39
14. Quality of the products and environmental
protection 43
This publication contains the information required
to install VD4G medium voltage circuit-breakers
and put them into service.
Please read the manual carefully to ensure that the
product is used correctly.
Similarly to all the apparatus we manufacture,
VD4G circuit-breakers are designed for different
installation configurations.
They can therefore undergo further technical-
construction modifications (at the customer’s
request) so as to adapt them to special installation
requirements.
Consequently, the manual may not contain
instructions concerning special customized
configurations.
This means that, besides this manual, it is always
necessary to consult the latest technical
documentation (circuit and wiring diagrams,
layouts, assembly and installation drawings, any
protection coordination studies, etc.), especially
regarding any variants requested in relation to the
standard configurations.
Only use original spare parts for maintenance
operations.
Please also consult the technical catalog of the
circuit-breaker and the spare parts catalog for
further details.
All the installation, putting into service,
running and maintenance operations
must be carried out by suitably
qualified personnel with in-depth
knowledge of the apparatus.
—
I. Foreword
—
II. Environmental
protection program
VD4G circuit-breakers are manufactured in
accordance with ISO 14000 Standards (Guidelines
for environmental management).
The manufacturing processes are implemented in
accordance with the environmental protection
standards when it comes to reducing both energy
consumption and the production of waste. All this
is thanks to the environmental management
system applied in the medium voltage apparatus
manufacturing facility.
2
VD4G INSTALLATION AND OPERATING INSTRUCTIONS
—
1. Packing and transport
The circuit-breaker is shipped in special packing, in
the open position and with the spring discharged.
Each piece of apparatus is protected by a plastic
cover to prevent water from infiltrating during the
loading and unloading stages and to keep the dust
off during storage.
MEDIUM VOLTAGE PRODUCTS
3
A
B
3
4
2
1
5
Ur
Before proceeding with any operation,
always make sure that the springs of
the operating mechanism are
discharged and that the apparatus is in
the open position.
Upon receipt, check the condition of the apparatus,
that the packing is undamaged and that the name-
plate data (see fig. 1) correspond to the information
in the order confirmation and shipping note.
Also make sure that all the materials described in
the shipping note are included in the supply.
Should any damage or irregularity be noted in the
supply on unpacking, notify ABB (directly or through
the agent or supplier) as soon as possible and in any
case within five days of receipt.
The apparatus is only supplied with the accessories
specified at the time of ordering and validated in
the order confirmation sent by ABB.
The following documents accompany the apparatus
when it is shipped:
• instruction manual (this document)
• test certificate
• identification label
• copy of the shipping documents
• circuit diagram.
Other documents, sent prior to shipment of the ap-
paratus, are:
• order confirmation
• original shipping notification
• any drawings or documents referring to special
configurations/conditions.
—
2. Checking on receipt
CIRCUIT-BREAKER
IEC-IEEE
VD4G ... ... ...
62271-37-013
CLASSIFICATION ... ... ...
SN ... ... ... PR. YEAR ......
CIRCUIT DIAGRAM ... ... ... ...
FIG. ... ...
OPERATING MECHANISM
- MBO1 ... ... ... V
Made by ABB
M WEIGHT ... kV
Ur
Key
A Circuit-breaker rating plate
B Operating mechanism rating plate
1 Type of apparatus
2 Symbols denoting compliance with Standards
3 Serial number
4 Circuit-breaker specifications
5 Characteristics of operating mechanism auxiliaries
Fig. 1
4
VD4G INSTALLATION AND OPERATING INSTRUCTIONS
When the apparatus must be stored for a certain
period of time, our workshops can (on request)
provide packing to suit the specified storage
conditions.
On receipt the apparatus must be carefully
unpacked and checked as described in Checking on
receipt (chap. 2).
If the apparatus cannot be installed immediately, it
must be re-packed in its original packing materials.
Insert at least one standard packet of special
hygroscopic substance inside the packing of each
piece of apparatus.
Should the original packing no longer be available
and the apparatus cannot be installed immediately,
it should be stored indoors in a well-ventilated, dry,
dust-free, non-corrosive environment, well away
from any easily flammable materials and at a
temperature between – 5 °C and + 40 °C.
Avoid accidental shocks or positions which stress
the structure of the apparatus.
—
3. Storage
MEDIUM VOLTAGE PRODUCTS
5
C A
3
B
1
2
3
Fig. 2
Fig. 2a Lifting support
Fig. 3
Before proceeding with any operation, always make
sure that the spring of the operating mechanism is
discharged and that the apparatus is in the open
position.
Proceed as follows to lift and handle the circuit-
breaker (fig. 2):
• use suitable lifting equipment (1) (not supplied)
with ropes and safety hooks (2);
• insert the hooks (2) into the supports (3) fixed to
the frame of the circuit-breaker and lift. Insert
hooks (2) into holes in support (3), depending on
the type of apparatus (see table);
• once the operation has terminated (and in any
case before putting into service), release the
lifting equipment (1) and remove the supports (3)
from the frame.
When handling the apparatus, take great care to
prevent the insulating parts and terminals of the
circuit-breaker from being stressed.
Do not handle the apparatus by
inserting lifting devices directly under
it. If this technique is unavoidable, place
the circuit-breaker on a pallet or a
sturdy supporting surface (see fig. 3).
In any case, it is always advisable to lift
the apparatus by means of the supports
(3).
—
4. Handling
Version
Pole center
distance
Rated current Hole
Fixed A
Fixed A
Fixed A
Fixed C
Withdrawable A
Withdrawable B
Withdrawable C
Withdrawable C
6
VD4G INSTALLATION AND OPERATING INSTRUCTIONS
9
8
11
10
1
3
4
5
6
7
11
Key
1 Lever for manual
loading of closing
spring
2 Signaling device for
circuit-breaker open/
closed
3 Rating plate
4 Opening pushbutton
5 Closing pushbutton
6 Signaling device for
closing spring loaded/
discharged
7 Operation counter
8 Terminals
9 Earthing screw
10 Delivery terminal box
11 Wiring connection
Fig. 4
5.1. General information
VD4G are vacuum circuit-breakers for indoor
installation. Refer to technical catalog code
1VCP000661 for the relative electrical performance.
Please contact ABB for special installation
requirements.
The following versions are available:
• fixed
• withdrawable for UniGear ZS1 switchgear.
5.2. Regolatory framework
VD4G circuit-breakers conform to standard IEC/
IEEE 62271-37-013.
5.3. EL operating mechanism
VD4G circuit-breakers are equipped with an EL type
spring operating mechanism. The EL operating
mechanism is designed for the range of circuit-
breakers listed in the table.
Type of operating
mechanism
Breaking capacity
5.4. Fixed circuit-breakers
The fixed circuit-breaker (fig. 4) is the basic version
complete with structure and front protection shield.
Holes for fixing are made in the lower part of the
structure.
There are two types of connections for connecting
the auxiliary circuits (choice at customer’s charge
when the purchase order is placed) (see sect. 7.8.1).
The earthing screw is located in the rear part of the
circuit-breaker. See key to figure 4 for further
details.
—
5. Description
MEDIUM VOLTAGE PRODUCTS
7
5.4.1. General characteristics of fixed circuit-breakers
General characteristics of fixed circuit-breakers (15 kV)
Circuit-breaker VD4G-25 VD4G-40
Standards
• •
Rated voltage
Ur [kV]
Rated insulation voltage
Us [kV]
Withstand voltage at 50 Hz
Rated value
Impulse withstand voltage
Rated value Up [kV]
Rated frequency fr [Hz]
Rated current Ir [A]
Rated breaking capacity (system-source)
Symmetrical short-circuit current IscSFF [kA]
DC component of breaking capacity %
Symmetrical short-circuit current (system-
source)
IascSFF [kA]
Rated breaking capacity (generator-source)
Symmetrical short-circuit current IscGFF [kA]
DC component of breaking capacity Class G1
(generator-source)
%
Symmetrical short-circuit current Iscg Class G2
(generator-source)
IscGFF [kA]
DC component of breaking capacity Class G2
(generator-source)
%
Rated breaking current under out-of-phase conditions
Rated symmetrical short-circuit current IscOOP [kA]
DC component of breaking current %
Making current Ip [kA]
Rated operating sequence during short-circuit interruption
Short-time withstand current (3s) Ik [kA]
Opening time [ms]
Maximum arcing time (generator-source fault - 130% DC
component at contact separation)
[ms]
Closing time [ms]
Maximum
overall
dimensions
H [mm]
W [mm]
D [mm]
Pole center-distance P [mm]
Weight [kg]
Standardized dimensions table
Operating temperature [°C]
(1) 4000 A with forced ventilation
D
H
W
P
P
—
5. Description
8
VD4G INSTALLATION AND OPERATING INSTRUCTIONS
(1) 4000 A with forced ventilation
5.4.2. Standard fittings for fixed circuit-breakers
The basic fixed circuit-breaker versions are three-
pole and are equipped with:
• EL manual operating mechanism
• mechanical signaling device for closing spring
loaded/discharged
• mechanical signaling device for circuit-breaker
open/closed
• closing pushbutton, opening pushbutton,
operation counter
• set of ten auxiliary contacts for circuit-breaker
open/closed
• lever for manual loading of closing spring
VD4G-40: 15 kV, 40 kA SFF, 25 kA GFFVD4G-25: 15 kV, 25 kA SFF, 16 kA GFF
VD4G 15 kV fixed circuit-breaker
Type of circuit-breaker
Ur Isc
kV kA
15
MEDIUM VOLTAGE PRODUCTS
9
16
8
9
10
11
3
7
4
5
1
2
14
6
13
12
16
17
Withdrawable circuit-breakers up to 15 kV are
available for UniGear ZS1 switchgear.
They consist of a truck to which the bearing
structure of the actual circuit-breaker is fixed.
Circuit-breakers for UniGear ZS1 switchgear (fig.
5a)
The cord with plug (13) for connecting the electrical
accessories of the operating mechanism comes out
of the upper part of connector (14).
Strikers for operating the contacts (connected/
disconnected) in the switchgear are fixed to the
upper part of the circuit-breaker.
Slides (9) for operating the segregation shutters of
the medium voltage contacts in the enclosure or
switchgear are fixed at the sides of the circuit-
breaker. Circuit-breakers for UniSec switchgear have
wheels (17) for this purpose.
The front part of the circuit-breaker truck has a
cross-beam with handles (16) which latches onto the
circuit-breaker when this is racked-in/out by means
of the operating lever (15).
The circuit-breaker is complete with disconnection
contacts (8).
The withdrawable circuit-breaker has locks on the
front cross-beam allowing it to be latched into the
corresponding slot-in joints of the switchgear.
Key
1 Lever for manual
loading of closing
spring
2 Signaling device for
circuit-breaker open/
closed
3 Rating plate
4 Opening pushbutton
5 Closing pushbutton
6 Signaling device for
closing spring loaded/
discharged
7 Operation counter
8 Disconnecting
contacts
9 Chute for operating
shutters of UniGear,
PowerCube switchgear
10 Truck
11 Locks for latching to
fixed part
12 Strikers for operating
contacts in enclosure
13 Connector (plug)
14 Wiring connection
15 Operating lever for
circuit-breaker
racking-in/out
16 Lock operating handles
(11)
17 Wheels for moving
segregation shutters
Fig. 5a
The locks can only be operated by the handles when
the truck rests completely against the cross-beam.
The operating lever (15) must be inserted to its full
extent (see sect. 7.5.). A lock prevents the truck from
advancing into the enclosure or fixed part when the
earthing switch is closed.
Another lock prevents racking-in/out when the
circuit-breaker is closed. When the truck is in the
intermediate position, between disconnected and
connected, a further lock (both mechanical and
electrical) prevents the circuit-breaker from closing.
The truck is also fitted with a locking magnet which,
if de-energized, prevents the truck from being
racked-in.
An interlock is available on request to prevent the
circuit-breaker from being racked-in when the door
is open and the door from being opened when the
circuit-breaker is closed.
The lever for loading the closing spring (1) in the
manual mode is built into the operating mechanism.
The spring is loaded by repeatedly lowering the lever
by linear movements until the yellow indicator (6)
appears to show that loading is complete.
The spring can only be loaded with the switchgear
door open. Comply with the instructions in the
UniGear switchgear manual for the operations that
can be performed with the door open.
—
5. Description
5.5. Withdrawable circuit-breakers
10
VD4G INSTALLATION AND OPERATING INSTRUCTIONS
16 19 20 22 21
23
29
30
Fig. 5c
Fig. 5d
MEDIUM VOLTAGE PRODUCTS
11
Circuit-breaker VD4G-25 VD4G-40
Standards • •
Rated voltage Ur [kV]
Rated insulation voltage Us [kV]
Rated value
Impulse withstand voltage
Rated value Up [kV]
Rated frequency fr [Hz]
Ir [A]
Rated breaking capacity (system-source)
Symmetrical short-circuit current IscSFF [kA]
DC component of breaking capacity %
Symmetrical short-circuit current (system-
source)
IascSFF [kA]
Rated breaking capacity (generator-source)
Symmetrical short-circuit current IscGFF [kA]
(generator-source)
%
(generator-source)
IscGFF [kA]
(generator-source)
%
Rated breaking current under out-of-phase conditions
Rated symmetrical short-circuit current IscOOP [kA]
DC component of breaking current %
Making current Ip [kA]
Rated operating sequence during short-circuit interruption
Ik [kA]
Opening time [ms]
component at contact separation)
[ms]
Closing time [ms]
Maximum
overall
dimensions
H [mm]
W [mm]
D [mm]
Pole center-distance P [mm]
Weight [kg]
Standardized dimensions table
Operating temperature [°C]
(1) 4000 A with forced ventilation
D
H
W
P
P
—
5. Description
5.5.1. Types of withdrawable circuit-breakers available
General characteristics of withdrawable circuit-breakers
for UniGear ZS1 (15 kV) switchgear
12
VD4G INSTALLATION AND OPERATING INSTRUCTIONS
5.5.2. Types of withdrawable circuit-breakers available for UniGear ZS1 switchgear
VD4G 15 kV withdrawable circuit-breaker
Type circuit-breaker
Ur Isc
kV kA
15
(1) 4000 A with forced ventilation
MEDIUM VOLTAGE PRODUCTS
13
(*) The minimum current
that the relay with TCS
function (used for
monitoring coil continuity)
detects as a condition
denoting that the trip
circuit is operating
correctly (specified for
each relay in the relative
manual), must be sensibly
higher than the current
consumption of the actual
coil (~1.5 mA).
If this fails to occur, always
add, in parallel to the TCS,
a circuit able to absorb
sufficient current to
compensate the gap while
preventing the total
current in the TCS circuit
from rising above the
maximum threshold (Itcs
< 10 mA for High Voltage
coils - from 110V to 250V,
and Itcs < 50 mA for Low
Voltage coils from 24 V to
60 V).
A simple resistor can be
sized for the purpose,
depending on the
parameters of the TCS and
the auxiliary voltage range
used.
1 Shunt opening release (-MBO1)
Allows the device to be opened by remote control.
This release is suitable for both instantaneous and
permanent duty. However, an auxiliary contact
-BGB1 de-energizes it after the circuit-breaker has
opened. In the case of instantaneous service, the
current impulse must last at least 100 ms.
This release can be controlled by the following
devices: coil continuity control (CCC), opening
circuit supervision (TCS)(*) or the ABB STU
functionality control device (see accessory 19,
supplied on request).
Characteristics
Un
Un
Operating limits
in accordance with IEC/IEEE
Power at inrush (Ps)
Continuous power
consumption (Pc)
Electronics self-consumption
(no coil supplied); value
independent of voltage
applied
Opening time
Insulation voltage
2 Additional shunt opening release (-MBO2)
Similarly to shunt opening release -MBO1, this al-
lows the opening command of the apparatus to be
transmitted by remote control. It can be energized
by the same circuit as main shunt opening release
-MBO1 or by a circuit completely separate from re-
lease -MBO1.
This release is suitable for both instantaneous and
permanent duty. However, an auxiliary contact
-BGB1 de-energizes it after the circuit-breaker has
opened.
To guarantee the release action, the current impulse
must last at least 100 ms.
Continuity functionality can be checked with a con-
tinuity control device (CCC), opening circuit supervi-
sion device (TCS)(*) or the STU functionality control
device (see accessory 19, supplied on request).
• MBO2 has the same electrical and operating cha-
racteristics as release -MBO1.
—
5. Description
Accessories with the same number are alternatives.
5.6. Characteristics of the electrical accessories
14
VD4G INSTALLATION AND OPERATING INSTRUCTIONS
3 Opening solenoid (-MBO3)
The opening solenoid (-MBO3) is a special
demagnetizing release for use in conjunction with
self-supplied overcurrent protection relays.
It is situated in the operating mechanism (in the
left-hand side) and is not an alternative to the
additional shunt opening release (-MBO2).
It is only available for VD4G-25 circuit-breakers.
If this accessory is required, it must be specified
when ordering since it cannot be installed by the
customer at a later date.
ask for document: Data sheet 1VCD600854.
The opening solenoid (-MBO3) is available in two
versions:
• For D.C. (release by discharging energy stored in
protection relay against overcurrent of the self-
supplied type)
• For A.C. (release by means of energy supplied by
an adder transformer on the secondaries of the
protection current transformers) (the adder CT is
at the customer’s charge)
4 Shunt closing release (-MBC)
Allows the apparatus to be closed by remote control.
This release is suitable for both instantaneous and
permanent duty. An auxiliary contact to de-energize
it after the circuit-breaker has closed is not envis-
aged.
The permanently supplied release provides the elec-
trical anti-pumping function with both electrical
opening and re-closing commands maintained. To
guarantee the closing action, the current impulse
must last at least 100 ms.
If there is the same supply voltage for shunt closing
release -MBC and under-voltage release -MBU and
the circuit-breaker must close automatically when
auxiliary voltage returns, there must be a delay of at
least 50 ms between under-voltage release energiz-
ing and energizing of the shunt closing release to al-
low the closing operation to take place.
Continuity functionality can be checked with a con-
tinuity control device (CCC), opening circuit supervi-
sion device (TCS)(*) or the STU functionality control
device (see accessory 19, supplied on request).
Characteristics
Un
Un
Operating limits
in accordance with IEC/IEEE
Power at inrush (Ps)
Continuous power
consumption (Pc)
Electronics self-consumption
(no coil supplied); value
independent of voltage
applied
Opening time
Insulation voltage
(*) The minimum current
that the relay with TCS
function (used for
monitoring coil
continuity) detects as a
condition denoting that
the trip circuit is
operating correctly
(specified for each relay in
the relative manual), must
be sensibly higher than
the current consumption
of the actual coil (~1.5
mA).
If this fails to occur,
always add, in parallel to
the TCS, a circuit able to
absorb sufficient current
to compensate the gap
while preventing the total
current in the TCS circuit
from rising above the
maximum threshold (Itcs
A simple resistor can be
sized for the purpose,
depending on the
parameters of the TCS
and the auxiliary voltage
range used.
MEDIUM VOLTAGE PRODUCTS
15
Consult circuit diagrams 1VCD400151 for fixed
circuit-breakers and 1VCD400155 for plug-in circuit-
breakers.
additional shunt opening release use 1 and/or 2
closing contacts “a”, thereby reducing the number
of auxiliary contacts available. Always check the
maximum number of contacts available with non-
standard equipment.
Auxiliary contacts –BGB1 conform to the following
standards/regulations/directives:
• IEC 62271-100
• IEEE C37.54
•
• Germanish Loyd regulation / vibrations envisaged
by the shipping registers
• UL 508
•
• RoHS Directive
7a Auxiliary contacts of circuit-breaker (-BGB1) for
15 kV versions
Electrical signaling of circuit-breaker open/closed
can be obtained with a group of 10, 16 or 20 auxiliary
contacts for the fixed version and 10 or 16 auxiliary
contacts for the plug-in version. The standard
equipment comprises 10 auxiliary contacts.
Note
The following are available with the standard group
of ten auxiliary contacts and the maximum number
of electrical accessories:
• for fixed circuit-breakers: three closing contacts
“a” for signaling circuit-breaker open and five
opening contacts “b” for signaling circuit-breaker
closed;
• for plug-in circuit-breakers: three closing contacts
“a” for signaling circuit-breaker open and four
opening contacts “b” for signaling circuit-breaker
closed.
Circuit-breakers in the fixed version are available
with two finishing accessories (to be specified when
ordering):
• non-wired auxiliary contacts; wiring to the
terminals of the contacts is at the customer’s
charge (photo below left; the terminal box to
which the other electrical accessories are wired is
at the top); ask for instructions 1VCD601204
(available in the main languages) which describe
how to remove, wire the auxiliary contact more
easily and fit the group of auxiliary contacts back
in place;
• auxiliary contacts already wired to the terminal
box (see photo)
—
5. Description
Accessories with the same number are alternatives.
16
VD4G INSTALLATION AND OPERATING INSTRUCTIONS
General characteristics
Insulation voltage
Rated voltage
Test voltage
Maximum rated current
Breaking capacity
Quantity of contacts
Contact travel
Actuating force
Resistance Ω
Operating temperature
Operating temperature
Contact overtemperature
Mechanical life
operations
Protection class
Cable section
Electrical specifications (according to IEC 62271-100 class 1)
Rated voltage Un Breaking capacity
Electrical specifications (according to IEC 60947)
Rated voltage Un
Breaking capacity
Cosj
Cosj
8 Transient contact (-BGB4)
This contact closes momentarily (for > 30 ms) upon
circuit-breaker opening by remote control or by
means of a shunt opening release.
The indication is not given when opening is manual
and local. In this case, a contact (–BGB11) is
activated by the manual pushbutton and cuts out
the closing indication of the transient contact
(-BGB4).
The transient contact is activated by the main
operating shaft, thus the indication is only provided
when the main contacts of the circuit-breaker
effectively open.
MEDIUM VOLTAGE PRODUCTS
17
9 Position contact (-BGT3)
It is used in conjunction with the locking magnet in
the operating mechanism (-RLE1) to prevent remote
closing during movement in the cubicle.
It is only supplied for the withdrawable circuit-
breaker version for UniGear ZS1 switchgear and
PowerCube modules.
It cannot be supplied when transmitted contacts in
the truck are required (-BGT1; -BGT2).
10 Transmitted contacts in truck (-BGT1;-BGT2)
Transmitted contacts of withdrawable circuit-
breaker (installed in circuit-breaker truck - only for
withdrawable circuit-breaker VD4G/P).
These contacts are additional or alternative to the
position contacts (for signaling circuit-breaker
withdrawn) in the cubicle. They also act as position
contacts (-BGT3).
Contacts -BGT1 and BGT2 have the same general
and electrical characteristics as auxiliary contacts
“7b. -BGB1, -BGB2, -BGB3”.
Accessories with the same number are alternatives.
—
5. Description
18
VD4G INSTALLATION AND OPERATING INSTRUCTIONS
11 Motor operator (-MAS)
Automatically loads the closing spring of the circuit-
breaker’s operating mechanism. Once the circuit-
breaker has closed, the motor immediately begins
to reload the closing spring.
The closing spring can still be loaded in the manual
mode (using the relative lever built into the
operating mechanism) in a power failure or during
maintenance work.
Characteristics
Un
Un
Operating limits
Inrush power input (Ps)
Rated power (Pn)
Inrush time
Loading time
Insulation voltage
12 Closing spring loaded/discharged signaling
contacts (-BGS2)
Consists of a microswitch allowing remote signaling
of the state of the closing spring of the circuit-
breaker operating mechanism.
The following settings can be obtained:
• contact open: spring loaded signal
• contact closed: spring discharged signal
The two signals must be used for circuits with the
same energizing voltage
MEDIUM VOLTAGE PRODUCTS
19
15 Locking magnet on truck (-RLE2)
This accessory is mandatory in withdrawable
versions for UniGear ZS1 switchgear and PowerCube
modules to prevent the circuit-breaker from being
racked into the switchgear when the plug of the
auxiliary circuits is disconnected.
The plug also creates an anti-insertion lock against
different rated currents. Striker pins prevent the
plug from being plugged into the socket if the
circuit-breaker’s rated current is lower than the
rated current of the panel.
ZS8.4 switchgear is available on request. This
accessory is not available when the motor-operated
truck is required.
Characteristics
Un
Un
Operation limits
Power ai inrush (Ps)
Continuous power (Pc)
Inrush time
Insulation voltage
16 Interlock for fixed circuit-breaker
Device for fixed circuit-breakers converted into
plug-in by the customer. Allows the customer to
create a mechanical lock that inhibits racking-out/
racking-in when the circuit-breaker is closed and
prevents the circuit-breaker from closing during
movement.
is placed since it must be assembled in the factory.
Protections and locks
Various different mechanical and electromechanical protection devices and locks are available.
—
5. Description
20
VD4G INSTALLATION AND OPERATING INSTRUCTIONS
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ABB VD4G-40 Installation And Operating Instructions Manual
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