ABB VD4 Series Quick guide

Medium Voltage Products
Index
I. Introduction 4
II. Programme for environmental protection 4
1. Packing and transport 5
2. Checking on receipt 5
3. Storage 5
4. Handling 6
5. Description 7
6. Instructions for circuit-breaker operation 36
7. Installation 39
8. Putting into service 44
9. Maintenance 45
10. Application of the standards for X-ray emission 48
11. Spare parts and accessories 49
12. Electrical diagram 49
13. Overall dimensions 50
VD4
Installation and service instructions
12 ... 24 kV - 630 ... 3150 A - 16 ... 40 kA

1
For your safety!
Make sure that the installation room (spaces, divisions and ambient) is
suitable for the electrical apparatus.
Check that all the installation, putting into service and maintenance
operations are carried out by qualified personnel with suitable
knowledge of the apparatus.
Make sure that the standard and legal prescriptions are complied with
during installation, putting into service and maintenance, so that
installations according to the rules of good working practice and safety
in the work place are constructed.
Strictly follow the information given in this instruction manual.
Check that the rated performance of the apparatus is not exceeded
during service.
Check that the personnel operating the apparatus have this instruction
manual to hand as well as the necessary information for correct
intervention.
Pay special attention to the danger notes indicated in the manual by
the following symbol:
Responsible behaviour safeguards your own
and others’ safety!
For any requests, place contact
the ABB Assistance Service.

2

3
I. Introduction 4
II. Programme for environmental protection 4
1. Packing and transport 5
2. Checking on receipt 5
3. Storage 5
4. Handling 6
5. Description 7
5.1. General information 7
5.2. Reference Standards 7
5.3. EL operating mechanism 7
5.4. Fixed circuit-breakers 7
5.5. Withdrawable circuit-breakers 15
5.6. Characteristics of the electrical accessories 35
6. Instructions for circuit-breaker operation 36
6.1. Safety indications 36
6.2. Switching and signalling parts 36
6.3. Circuit-breaker closing and opening operations 37
7. Installation 39
7.1. General 39
7.2. Installation and operating conditions 39
7.3. Preliminary operations 41
7.4. Installation of fixed circuit-breakers 41
7.5. Installation of withdrawable circuit-breakers in UniGear ZS1
and PowerCube modules 41
7.6. Connections of the fixed circuit-breaker power circuit 42
7.7. Earthing 42
7.8. Connection of the auxiliary circuits 42
8. Putting into service 44
8.1. General procedures 44
9. Maintenance 45
9.1. General 45
9.2. Inspections and functionality tests 45
9.3. Overhauling 46
9.4. Repairs 48
10. Application of the standards for X-ray emission 48
11. Spare parts and accessories 49
11.1. List of spare parts 49
12. Electrical diagram 49
13. Overall dimensions 50
Index

4
I. Introduction
This publication contains the information needed to install medium
voltage VD4 circuit-breakers and put them into service.
For correct use of the product, please read it carefully.
Like all the apparatus we manufacture, the VD4 circuit-breakers are
designed for different installation configurations.
However, this apparatus allows further technical-construction
modifications (at the customer’s request) to adapt to special installation
requirements.
Consequently, the information given below may sometimes not contain
instructions concerning special configurations.
Apart from this manual, it is therefore always necessary to consult the
latest technical documentation (electric circuit and wiring diagrams,
assembly and installation drawings, any protection coordination studies,
etc.), especially regarding any variants requested in relation to the
standardised configurations.
Only use original spare parts for maintenance operations.
For further information, please also see the technical catalogue of the
circuit-breaker and the spare parts catalogue.
All the installation, putting into service, running and
maintenance operations must be carried out by skilled
personnel with in-depth knowledge of the apparatus.
II. Environmental protection programme
The VD4 circuit-breakers are manufactured in accordance with the
ISO 14000 Standards (Guidelines for environmental management).
The production processes are carried out in compliance with the
Standards for environmental protection in terms of reduction in energy
consumption as well as in raw materials and production of waste
materials. All this is thanks to the medium voltage apparatus
manufacturing facility environmental management system.

5
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 any
infiltration of water during the loading and unloading stages and to
keep the dust off during storage.
2. Checking on receipt
Before carrying out any operation, always make sure
that the operating mechanism spring is discharged and
that the apparatus is in the open position.
On receipt, check the state of the apparatus, integrity of the packing
and correspondence with the nameplate data (see fig. 1) with what is
specified in the order confirmation and in the accompanying 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 accompanying documents inserted in the shipping packing are:
– instruction manual (this document)
– test certification
– identification label
– copy of the shipping documents
– electric wiring diagram.
Other documents which are sent prior to shipment of the apparatus
are:
– order confirmation
– original shipping advice note
– any drawings or documents referring to special configurations/con-
ditions.
3. Storage
When a period of storage is foreseen, our workshops can (on request)
provide suitable packing for the specified storage conditions.
On receipt the apparatus must be carefully unpacked and checked
as described in Checking on receipt (chap. 2).
If immediate installation is not possible, the packing must be replaced,
using the original material supplied.
Insert packets of special hygroscopic substances inside the packing,
with at least one standard packet for piece of apparatus.
Should the original packing not be available and immediate installation
is not possible, store in a covered, well-ventilated, dry, dust-free, non-
corrosive ambient, away from any easily flammable materials and at a
temperature between –5 °C and +45 °C.
In any case, avoid any accidental impacts or positioning which stresses
the structure of the apparatus.

6
1
2
3
CA
3
B
The apparatus must not be handled by putting lifting
devices directly under the apparatus itself. Should it be
necessary to use this technique, put the circuit-breaker
onto a pallet or a sturdy supporting surface (see fig. 3).
In any case, it is always advisable to carry out lifting
using the supports (3).
Version Pole centre distance Rated current Hole
Fixed 150-210 mm up to 1250 A A
Fixed 275 mm from 1600 to 3150 A A
Fixed 210 mm from 1600 to 2000 A
Withdrawable 150 mm up to 1250 A A
Withdrawable 210 mm from 1600 to 2500 A B
Withdrawable 275 mm up to 1250 A B
Withdrawable 275 mm from 1600 to 3150 A C
Withdrawable 210 mm up to 1250 A C
Fig. 2
Fig. 3
Fig. 1
Caption
A Circuit-breaker rating plate.
B Operating mechanism rating plate.
1 Type of apparatus.
2 Symbols of compliance with Standards.
3 Serial number.
4 Circuit-breaker characteristics.
5 Characteristics of the operating mechanism auxiliaries.
4. Handling
Before carrying out any operations, always make sure that the
operating mechanism spring is discharged and that the apparatus is
in the open position.
To lift and handle the circuit-breaker, proceed as follows (fig. 2):
– use a special lifting tool (1) (not supplied) fitted with ropes with
safety hooks (2);
– insert the hooks (2) in the supports (3) fixed to the frame of the
circuit-breaker and lift. Put the hooks (2) into the support holes (3)
according to the type of apparatus (see table);
– on completion of the operation (and in any case before putting into
service) unhook the lifting tool (1) and dismantle the supports (3)
from the frame.
During handling, take great care not to stress the insulating parts and
the terminals of the circuit-breaker.
A
B
3
4
2
1
5
CIRCUIT-BREAKER IEC 62271-100
VD4 ... ... ... CEI 17-1
CLASSIFICATION ... ... ...
SN ... ... ... PR. YEAR ......
M MASS ... kV
Ur
ELECTRIC DIAGRAM ... ... ... ...
FIG. ... ...
.. ... ... ... OPERATING MECHANISM
-MO1 ... ... ... V
Made by ABB

7
1
2
3
4
5
6
7
11
12
10
9
8
11
Fig. 4
5. Description
5.1. General
The VD4 series of circuit-breakers are pieces of apparatus under
vacuum for indoor installation. For the electrical performances, please
refer to the corresponding technical catalogue code 1VCP000001.
For special installation requirements, please contact ABB.
The following versions are available:
– fixed
– withdrawable for UniGear ZS1 switchgear and PowerCube modules.
5.2. Reference Standards
The VD4 circuit-breakers conform to the IEC 62271-100, CEI 17-1 file
1375 Standards and those of major industrialised countries.
5.3. EL operating mechanism
VD4 circuit-breakers are equipped with modular EL spring operating
mechanisms.The operating mechanism is designed to cover the whole
range of performances as shown in the following table:
Type of operating mechanism Rated short-circuit current
EL1 - EL2 Up to 31.5 kA
EL3 Up to 40 kA
Caption
1 Lever for manual closing spring charging
2 Signalling device for circuit-breaker open/closed
3 Rating plate
4 Opening pushbutton
5 Closing pushbutton
6 Signalling device for closing spring charged/discharged
7 Operation counter
8 Terminals
9 Earthing screw
10 Delivery terminal box
11 Cabling connection
12 Mechanical override of the undervoltage release (on request).
5.4. Fixed circuit-breakers
The fixed circuit-breaker (fig. 4) is the basic version complete with
structure and front protection screen. The fixing holes are made in the
lower part of the structure.
For the electrical connections of the circuit-breaker auxiliary circuits,
the terminal box (10) is available (also see par. 7.8.1.).
The earthing screw is placed in the rear part of the circuit-breaker. For
further details please see the caption to figure 4.

8
VD4 12
12
12
28
75
50-60
630 630 630 1250 1250 1250 1250 1250
16 16 16 16 16 16 — —
20 20 20 20 20 20 — —
25 25 25 25 25 25 — —
31.5 31.5 31.5 31.5 31.5 31.5 — —
——————4040
16 16 16 16 16 16 — —
20 20 20 20 20 20 — —
25 25 25 25 25 25 — —
31.5 31.5 31.5 31.5 31.5 31.5 — —
——————4040
40 40 40 40 40 40 — —
50 50 50 50 50 50 — —
63 63 63 63 63 63 — —
80 80 80 80 80 80 — —
——————100100
33 ... 60
10 ... 15
43 ... 75
60 ... 80
461 461 461 461 461 461 589 589
450 570 700 450 570 700 570 700
424 424 424 424 424 424 424 424
150 210 275 150 210 275 210 275
73 75 79 73 75 79 84 84
7405 7406 — 7405 7406 — — —
— — 000051 — — 000051 003282 003285
- 5 ... + 40
5.4.1. General characteristics of fixed circuit-breakers
Circuit-breaker
Standards IEC 62271-100
VDE 0671; CEI 17-1 (File 1375)
Rated voltage Ur [kV]
Rated insulation voltage Us [kV]
Withstand voltage at 50 Hz Ud (1 min) [kV]
Impulse withstand voltage Up [kV]
Rated frequency fr [Hz]
Rated normal current (40 °C) Ir [A]
Rated breaking capacity Isc [kA]
(rated short-circuit breaking
current symmetrical)
Rated short-time Ik [kA]
withstand current (3s)
Making capacity Ip [kA]
Operation sequence [ O - 0.3 s - CO - 15 s - CO ]
Opening time [ms]
Arcing time [ms]
Total breaking time [ms]
Closing time [ms]
Maximum H [mm]
Overall W [mm]
Dimensions D [mm]
Pole distance P [mm]
Weight [kg]
Standardised table of dimensions TN
1VCD
Operating temperature [°C]
Tropicalization IEC: 60068-2-30, 60721-2-1
Electromagnetic compatibility IEC: 60694
General characteristics of fixed circuit-breakers (12 kV)
PP
H
WD

9
1600 1600 1600 1600 1600 2000 2000 2500 2500 3150
——————————
20 20 20 — — 20 20 20 20 20
25 25 25 — — 25 25 25 25 25
31.5 31.5 31.5 — — 31.5 31.5 31.5 31.5 31.5
———40404040404040
——————————
20 20 20 — — 20 20 20 20 20
25 25 25 — — 25 25 25 25 25
31.5 31.5 31.5 — — 31.5 31.5 31.5 31.5 31.5
———40404040404040
——————————
50 50 50 — — 50 50 50 50 50
63 63 63 — — 63 63 63 63 63
80 80 80 — — 80 80 80 80 80
— — — 100 100 100 100 100 100 100
599 599 599 589 589 599 599 599 599 635
450 570 700 570 700 570 700 570 700 700
424 424 424 424 424 424 424 424 424 424
150 210 275 210 275 210 275 210 275 275
93 98 105 84 84 98 105 98 105 140
— 7407 7408 — — 7407 7408 7407 7408 —
000050 — — 003282 003285 ————000149

10
VD4 17
17.5
17.5
38
95
50-60
630 630 630 1250 1250 1250 1250 1250
16 16 16 16 16 16 — —
20 20 20 20 20 20 — —
25 25 25 25 25 25 — —
31.5 31.5 31.5 31.5 31.5 31.5 — —
——————4040
16 16 16 16 16 16 — —
20 20 20 20 20 20 — —
25 25 25 25 25 25 — —
31.5 31.5 31.5 31.5 31.5 31.5 — —
——————4040
40 40 40 40 40 40 — —
50 50 50 50 50 50 — —
63 63 63 63 63 63 — —
80 80 80 80 80 80 — —
——————100100
33 ... 60
10 ... 15
43 ... 75
60 ... 80
461 461 461 461 461 461 589 589
450 570 700 450 570 700 570 700
424 424 424 424 424 424 424 424
150 210 275 150 210 275 210 275
73 75 79 73 75 79 84 84
7405 7406 — 7405 7406 — — —
— — 000051 — — 000051 003282 003285
- 5 ... + 40
General characteristics of fixed circuit-breakers (17.5 kV)
Circuit-breaker
Standards IEC 62271-100
VDE 0671; CEI 17-1 (File 1375)
Rated voltage Ur [kV]
Rated insulation voltage Us [kV]
Withstand voltage at 50 Hz Ud (1 min) [kV]
Impulse withstand voltage Up [kV]
Rated frequency fr [Hz]
Rated normal current (40 °C) Ir [A]
Rated breaking capacity Isc [kA]
(rated short-circuit breaking
current symmetrical)
Rated short-time Ik [kA]
withstand current (3s)
Making capacity Ip [kA]
Operation sequence [ O - 0.3 s - CO - 15 s - CO ]
Opening time [ms]
Arcing time [ms]
Total breaking time [ms]
Closing time [ms]
Maximum H [mm]
Overall W [mm]
Dimensions D [mm]
Pole distance P [mm]
Weight [kg]
Standardised table of dimensions TN
1VCD
Operating temperature [°C]
Tropicalization IEC: 60068-2-30, 60721-2-1
Electromagnetic compatibility IEC: 60694
PP
H
WD

11
1600 1600 1600 1600 2000 2000 2500 3150
————————
20 20 — — 20 20 20 20
25 25 — — 25 25 25 25
31.5 31.5 — — 31.5 31.5 31.5 31.5
——404040404040
————————
20 20 — — 20 20 20 20
25 25 — — 25 25 25 25
31.5 31.5 — — 31.5 31.5 31.5 31.5
——404040404040
————————
50 50 — — 50 50 50 50
63 63 — — 63 63 63 63
80 80 — — 80 80 80 80
— — 100 100 100 100 100 100
599 599 589 589 599 599 599 635
570 700 570 700 570 700 700 700
424 424 424 424 424 424 424 424
210 275 210 275 210 275 275 275
98 105 84 84 98 105 105 140
7407 7408 — — 7407 7408 7408 —
— — 003282 003285 — — — 000149

12
VD4 24
24
24
50
125
50-60
630 630 1250 1250 1600 2000 2500
16 16 16 16 16 16 —
20 20 20 20 20 20 —
25 25 25 25 25 25 25
16 16 16 16 16 16 —
20 20 20 20 20 20 —
25 25 25 25 25 25 25
40 40 40 40 40 40 —
50 50 50 50 50 50 —
63 63 63 63 63 63 63
33 ... 60
10 ... 15
43 ... 75
60 ... 80
631 631 631 631 642 642 642
570 700 570 700 700 700 700
424 424 424 424 424 424 424
210 275 210 275 275 275 275
100 104 100 104 110 110 110
7409 7410 7409 7410 7411 7411 7411
- 5 ... + 40
General characteristics of fixed circuit-breakers (24 kV)
Circuit-breaker
Standards IEC 62271-100
VDE 0671; CEI 17-1 (File 1375)
Rated voltage Ur [kV]
Rated insulation voltage Us [kV]
Withstand voltage at 50 Hz Ud (1 min) [kV]
Impulse withstand voltage Up [kV]
Rated frequency fr [Hz]
Rated normal current (40 °C) Ir [A]
Rated breaking capacity Isc [kA]
(rated short-circuit breaking
current symmetrical)
Rated short-time Ik [kA]
withstand current (3s)
Making capacity Ip [kA]
Operation sequence [ O - 0.3 s - CO - 15 s - CO ]
Opening time [ms]
Arcing time [ms]
Total breaking time [ms]
Closing time [ms]
Maximum H [mm]
Overall W [mm]
Dimensions D [mm]
Pole distance P [mm]
Weight [kg]
Standardised table of dimensions TN
Operating temperature [°C]
Tropicalization IEC: 60068-2-30, 60721-2-1
Electromagnetic compatibility IEC: 60694
PP
H
WD

13
12
VD4 fixed circuit-breaker without bottom and top terminals
Notes
H = Height of the circuit-breaker.
W = Width of the circuit-breaker.
D = Depth of the circuit-breaker.
u/l = Distance between bottom and top terminal.
l/g = Distance between the bottom terminal and the resting surface of the circuit-breaker.
P = Pole horizontal centre distance.
5.4.2. Types of circuit-breakers available in the fixed version
Ur Isc Rated uninterrupted current (40°C) [A] Circuit-breaker type
kV kA H=461 H=589 H=599 H=635
D=424 D=424 D=424 D=424
u/l=205 u/l=310 u/l=310 u/l=310
l/g=217.5 l/g=238 l/g=237.5 l/g=237.5
P=150 P=210 P=275 P=210 P=275 P=150 P=210 P=275 P=275
W=450 W=570 W=700 W=570 W=700 W=450 W=570 W=700 W=750
16 630 VD4 12.06.16 p150
20 630 VD4 12.06.20 p150
25 630 VD4 12.06.25 p150
31.5 630 VD4 12.06.32 p150
16 1250 VD4 12.12.16 p150
20 1250 VD4 12.12.20 p150
25 1250 VD4 12.12.25 p150
31.5 1250 VD4 12.12.32 p150
20 1600 VD4 12.16.20 p150
25 1600 VD4 12.16.25 p150
31.5 1600 VD4 12.16.32 p150
16 630 VD4 12.06.16 p210
20 630 VD4 12.06.20 p210
25 630 VD4 12.06.25 p210
31.5 630 VD4 12.06.32 p210
16 1250 VD4 12.12.16 p210
20 1250 VD4 12.12.20 p210
25 1250 VD4 12.12.25 p210
31.5 1250 VD4 12.12.32 p210
40 1250 VD4 12.12.40 p210
20 1600 VD4 12.16.20 p210
25 1600 VD4 12.16.25 p210
31.5 1600 VD4 12.16.32 p210
40 1600 VD4 12.16.40 p210
20 2000 VD4 12.20.20 p210
25 2000 VD4 12.20.25 p210
31.5 2000 VD4 12.20.32 p210
40 2000 VD4 12.20.40 p210
20 2500 VD4 12.25.20 p210
25 2500 VD4 12.25.25 p210
31.5 2500 VD4 12.25.32 p210
16 630 VD4 12.06.16 p275
20 630 VD4 12.06.20 p275
25 630 VD4 12.06.25 p275
31.5 630 VD4 12.06.32 p275
16 1250 VD4 12.12.16 p275
20 1250 VD4 12.12.20 p275
25 1250 VD4 12.12.25 p275
31.5 1250 VD4 12.12.32 p275
40 1250 VD4 12.12.40 p275
20 1600 VD4 12.16.20 p275
25 1600 VD4 12.16.25 p275
31.5 1600 VD4 12.16.32 p275
40 1600 VD4 12.16.40 p275
20 2000 VD4 12.20.20 p275
25 2000 VD4 12.20.25 p275
31.5 2000 VD4 12.20.32 p275
40 2000 VD4 12.20.40 p275
20 2500 VD4 12.25.20 p275
25 2500 VD4 12.25.25 p275
31.5 2500 VD4 12.25.32 p275
40 2500 VD4 12.25.40 p275
20 3150 VD4 12.32.20 p275
25 3150 VD4 12.32.25 p275
31.5 3150 VD4 12.32.32 p275
40 3150 VD4 12.32.40 p275

14
VD4 fixed circuit-breaker without bottom and top terminals
Notes
H = Height of the circuit-breaker.
W = Width of the circuit-breaker.
D = Depth of the circuit-breaker.
u/l = Distance between bottom and top terminal.
l/g = Distance between the bottom terminal and the resting surface of the circuit-breaker.
P = Pole horizontal centre distance.
Ur Isc Rated uninterrupted current (40°C) [A] Circuit-breaker type
kV kA H=461 H=589 H=599 H=635
D=424 D=424 D=424 D=424
u/l=205 u/l=310 u/l=310 u/l=310
l/g=217.5 l/g=238 l/g=237.5 l/g=237.5
P=150 P=210 P=275 P=210 P=275 P=150 P=210 P=275 P=275
W=450 W=570 W=700 W=570 W=700 W=450 W=570 W=700 W=750
16 630 VD4 17.06.16 p150
20 630 VD4 17.06.20 p150
25 630 VD4 17.06.25 p150
31.5 630 VD4 17.06.32 p150
16 1250 VD4 17.12.16 p150
20 1250 VD4 17.12.20 p150
25 1250 VD4 17.12.25 p150
31.5 1250 VD4 17.12.32 p150
20 1600 VD4 17.16.20 p150
25 1600 VD4 17.16.25 p150
31.5 1600 VD4 17.16.32 p150
16 630 VD4 17.06.16 p210
20 630 VD4 17.06.20 p210
25 630 VD4 17.06.25 p210
31.5 630 VD4 17.06.32 p210
16 1250 VD4 17.12.16 p210
20 1250 VD4 17.12.20 p210
25 1250 VD4 17.12.25 p210
31.5 1250 VD4 17.12.32 p210
40 1250 VD4 17.12.40 p210
20 1600 VD4 17.16.20 p210
25 1600 VD4 17.16.25 p210
31.5 1600 VD4 17.16.32 p210
40 1600 VD4 17.16.40 p210
20 2000 VD4 17.20.20 p210
25 2000 VD4 17.20.25 p210
31.5 2000 VD4 17.20.32 p210
40 2000 VD4 17.20.40 p210
16 630 VD4 17.06.16 p275
20 630 VD4 17.06.20 p275
25 630 VD4 17.06.25 p275
31.5 630 VD4 17.06.32 p275
16 1250 VD4 17.12.16 p275
20 1250 VD4 17.12.20 p275
25 1250 VD4 17.12.25 p275
31.5 1250 VD4 17.12.32 p275
40 1250 VD4 17.12.40 p275
20 1600 VD4 17.16.20 p275
25 1600 VD4 17.16.25 p275
31.5 1600 VD4 17.16.32 p275
40 1600 VD4 17.16.40 p275
20 2000 VD4 17.20.20 p275
25 2000 VD4 17.20.25 p275
31.5 2000 VD4 17.20.32 p275
40 2000 VD4 17.20.40 p275
20 2500 VD4 17.25.20 p275
25 2500 VD4 17.25.25 p275
31.5 2500 VD4 17.25.32 p275
40 2500 VD4 17.25.40 p275
20 3150 VD4 17.32.20 p275
25 3150 VD4 17.32.25 p275
31.5 3150 VD4 17.32.32 p275
40 3150 VD4 17.32.40 p275
17.5

15
5.4.3. Standard fittings for fixed circuit-breakers
The basic version of the fixed circuit-breakers are three-pole and fitted with:
– EL type manual operating mechanism
– mechanical signalling device for closing spring charged/discharged
– mechanical signalling device for circuit-breaker open/closed
– closing pushbutton, opening pushbutton and operation counter
– set of ten circuit-breaker open/closed auxiliary contacts
Note: with the set of ten auxiliary contacts supplied as standard and the maximum number
of electrical applications possible, three make contacts (signalling circuit-breaker open) and
five break contacts (signalling circuit-breaker closed) are available.
– lever for manual closing spring charging
– auxiliary circuit support terminal box.
5.5. Withdrawable circuit-breakers
The withdrawable circuit-breakers are available for UniGear ZS1 switchgear, PowerCube
modules (see fig. 5a) and for ZS8.4 switchgear (see fig. 5b).
They consist of a truck on which the supporting structure of the circuit-breaker is fixed.
Circuit-breakers for UniGear ZS1 switchgear and PowerCube modules (fig. 5a)
The cord with the connector (14) (plug) for connection of the operating mechanism electrical
accessories comes out of the connection (15).
The strikers for operating the contacts (connected/isolated) placed in the switchgear are fixed
in the top part of the circuit-breaker.
The slides (9) for operating the segregation shutters of the medium voltage contacts of the
enclosure or of the switchgear are fixed on the sides of the circuit-breaker.
The crosspiece with the handles (17) for hooking up the circuit-breaker for the racking-in/out
operations by means of the special operating lever (16) is mounted on the front part of the
circuit-breaker truck.
24
Ur Isc Rated uninterrupted current (40°C) [A] Circuit-breaker type
kV kA H=631 H=642
D=424 D=424
u/l=310 u/l=310
l/g=282.5 ll/g=282.5
P=210 P=275 P=275
W=570 W=700 W=700
16 630 VD4 24.06.16 p210
20 630 VD4 24.06.20 p210
25 630 VD4 24.06.25 p210
16 630 VD4 24.12.16 p210
20 1250 VD4 24.12.20 p210
25 1250 VD4 24.12.25 p210
16 630 VD4 24.06.16 p275
20 630 VD4 24.06.20 p275
25 630 VD4 24.06.25 p275
16 1250 VD4 24.12.16 p275
20 1250 VD4 24.12.20 p275
25 1250 VD4 24.12.25 p275
16 1600 VD4 24.16.16 p275
20 1600 VD4 24.16.20 p275
25 1600 VD4 24.16.25 p275
16 2000 VD4 24.20.16 p275
20 2000 VD4 24.20.20 p275
25 2000 VD4 24.20.25 p275
25 2500 VD4 24.25.25 p275
Notes
H = Height of the circuit-breaker.
W = Width of the circuit-breaker.
D = Depth of the circuit-breaker.
u/l = Distance between bottom and top terminal.
l/g = Distance between the bottom terminal and the resting surface of the circuit-breaker.
P = Pole horizontal centre distance.
VD4 fixed circuit-breaker without bottom and top terminals

16
17
89
10
11
37
12
4
5
1
2
15
6
14
13
3
2
1
4
5
6
7
17
13 13
9
8
11
10
16
16
Fig. 5b
Caption
1 Coupling for the manual closing spring charging lever
2 Signalling device for circuit-breaker open/closed
3 Rating plate
4 Opening pushbutton
5 Closing pushbutton
6 Signalling device for closing spring charged/discharged
7 Operation counter
8 Isolating contacts
Another lock prevents racking-in and racking-out with the circuit-
breaker closed. With the truck in an intermediate position between
isolated and connected, a further lock prevents circuit-breaker closing
(either mechanical or electrical).
A locking magnet is also mounted on the truck which, when de-
energised, prevents the truck racking-in operation.
On request, an interlock is available which prevents racking-in of the
circuit-breaker with the door open, and door opening with the circuit-
breaker closed.
Fig. 5a
9 Slide for operating the switchgear shutters
10 Truck
11 Locks for hooking into the fixed part
12 Mechanical override of the undervoltage release (on request)
13 Strikers for activating the contacts placed in the enclosure
14 Connector (plug)
15 Cabling connection
16 Operating lever for circuit-breaker racking-in/out
17 Handles for activating the locks (11).
The circuit-breaker is completed with the isolating contacts (8).
The withdrawable circuit-breaker is fitted with special locks on the
front crosspiece, which allow hooking up into the corresponding
couplings of the switchgear. The locks can only be activated by the
handles with the truck fully resting against the crosspiece.
The operating lever (16) must be fully inserted (also see par. 7.5.). A
lock prevents the truck from advancing into the enclosure or fixed
part when the earthing switch is closed.
Caption
1 Lever for manually charging the closing spring
2 Signalling device for circuit-breaker open/closed
3 Rating plate
4 Opening pushbutton
5 Closing pushbutton
6 Signalling device for closing spring charged/discharged
7 Operation counter
8 Isolating contacts
9 Slide for operating the switchgear shutters
10 Truck
11 Locks for hooking into the fixed part
13 Connector (plug)
16 Operating lever for circuit-breaker racking-in/out (a special version is provided
for VD4/ZS8 Preussen Elektra EON circuit-breakers)
17 Handles for activating the locks (11).
(*) Only VD4/ZS8 Preussen - Elektra EON version.

17
16 19 20 22 21
23 29 30
Circuit-breakers for ZS8.4 switchgear (fig. 5b)
The socket (13) takes the connector (plug) placed in the switchgear.
The slides (9) for operating the segregation shutters of the medium
voltage contacts of the switchgear are fixed on the sides of the circuit-
breaker.
The crosspiece with the handles (17) for hooking up the circuit-breaker
for the racking-in/out operations by means of the special operating
lever (16) is mounted on the front part of the circuit-breaker truck.
The circuit-breaker is completed with the isolating contacts (8).
The withdrawable circuit-breaker is fitted with special locks, described
below (see fig.5c - 5d).
1) Prevention of traverse with circuit-breaker closed
With the circuit-breaker closed, the feeler pin (16 - fig. 5c) prevents
the shutter sliding (19- fig. 5c) and therefore insertion of the lever (20-
fig. 5c) for traverse of the apparatus.
2) Prevention of traverse with socket-plug disconnected
When the plug is not inserted in the socket (13), the stem (21 - fig. 5c)
prevents the plate (22 - fig. 5c) lifting and traverse of the apparatus.
3) Prevention of switchgear door closing with socket-plug
disconnected (*)
When the plug is not inserted in the socket (13), the feeler pin (23 - fig.
5d) prevents door closing.
4) Prevention of circuit-breaker racking-out with the socket-
plug connected (*)
When the plug is inserted in the socket (13), the lock bolt (29 - fig. 5d)
hits the pin (30 - fig. 5d) preventing the apparatus from being racked
out of the switchgear.
Fig. 5c
Fig. 5d

18
VD4/P 12
12
12
28
75
50-60
630 1250 1250 1250 1600 1600
16 16 — — — —
20 20 — — 20 20
25 25 — — 25 25
31.5 31.5 — — 31.5 31.5
——4040——
16 16 — — — —
20 20 — — 20 20
25 25 — — 25 25
31.5 31.5 — — 31.5 31.5
——4040——
40 40 — — — —
50 50 — — 50 50
63 63 — — 63 63
80 80 — — 80 80
— — 100 100 — —
33 ... 60
10 ... 15
43 ... 75
60 ... 80
628 628 691 691 691 691
503 503 653 853 653 853
662 662 641 642 642 642
150 150 210 275 210 275
116 116 174 176 160 166
7412 7412 — — 7415 7416
— — 3284 3286 — —
- 5 ... + 40
5.5.1. General characteristics of withdrawable circuit-breakers for UniGear ZS1 switchgear
Circuit-breaker
Standards IEC 62271-100
VDE 0671; CEI 17-1 (File 1375)
Rated voltage Ur [kV]
Rated insulation voltage Us [kV]
Withstand voltage at 50 Hz Ud (1 min) [kV]
Impulse withstand voltage Up [kV]
Rated frequency fr [Hz]
Rated normal current (40 °C)(1) Ir [A]
Rated breaking capacity Isc [kA]
(rated short-circuit breaking
current symmetrical)
Rated short-time Ik [kA]
withstand current (3s)
Making capacity Ip [kA]
Operation sequence [ O - 0.3 s - CO - 15 s - CO ]
Opening time [ms]
Arcing time [ms]
Total breaking time [ms]
Closing time [ms]
Maximum H [mm]
Overall W [mm]
Dimensions D [mm]
Pole distance P [mm]
Weight [kg]
Standardised table of dimensions TN
1VCD
Operating temperature [°C]
Tropicalization IEC: 60068-2-30, 60721-2-1
Electromagnetic compatibility IEC: 60694
(1) Rated current guaranteed with circuit-breaker installed in UniGear ZS1 switchgear and with 40 °C ambient temperature.
(2) 4000 A in UniGear ZS1 switchgear with forced ventilation.
General characteristics of withdrawable circuit-breakers
for UniGear ZS1 switchgear (12 kV)
PP
H
WD