ABB VD4 Series User manual

With Embeded Poles
36...40.5 kV, 1250...2500A, 25...31.5kA
Instruction Manual
VD4 Vacuum Circuit-breaker

3
Only install switchgear and/or switchboards in enclosed rooms suitable for
electrical equipment.
Ensure that installation, operation and maintenance are carried out by
specialist electricians only.
Observe the relevant information in the instruction manual for all actions
involving switchgear and switchboards.
Danger!
Payspecialattentiontothehazardnotesintheinstructionmanualmarkedwith
this warning symbol.
Make sure that under operation condition of the switchgear or switchboard
the specified data are not exceeded.
Keep the instruction manual accessible to all persons concerned with
installation, operation and maintenance.
The user's personnel are to act responsibly in all matters affecting safety at
work and the correct handling of the switchgear.
Ifyouhaveanyfurtherquestionsonthisinstructionmanual,themembersofour
field organization will be pleased to provide the required information.
That's why our instruction manual begins with these recommendations:
Your safety first always!
WARNING
Always observe the instruction manual and follow the rules
of good engineering practice !
Hazardous voltage
can cause electrical shock and burns.
Disconnect power, then earth and short-circuit before proceeding
with any work on this equipment.
Comply in full with the legally recognized standards, the connection
conditions of the local electrical utility and the applicable safety at work
regulations.

4
Contents Page Contents Page
1 Summary 5
1.1 General 5
1.2 Standards and specifications 5
1.2.1 Switchgear manufacture 5
1.2.2 Installation and operation 5
1.3 Operating conditions 5
1.3.1 Normal operating conditions 5
1.3.2 Special operating conditions 5
2Technical data 6
2.1 Technical data 6
Circuit-breakers for fixed installation
and on withdrawable part
2.2 Technical data 7
Releases and blocking magnet
2.3 Technical data 7
Motor-operated mechanisms
2.4 Permissible number of vacuum 8
interrupter switching operations
in relation to breaking current
2.5 Dimensions 9
3Structure and function 13
3.1 Structure of the breaker poles 13
3.2 Structure of the breaker operating 13
mechanism
3.2.1 Releases, blocking magnet 13
and auxiliary switches
3.3 Function 14
3.3.1 Charging of the spring energy store 14
3.3.2 Closing procedure 14
3.3.3 Opening procedure 14
3.3.4 Autoreclosing sequence 14
3.3.5 Quenching principle of the 14
vacuum interrupter
4Despatch and storage 18
4.1 Condition on delivery 18
4.2 Packaging 18
4.3 Transport 18
4.4 Delivery 19
4.5 Intermediate storage 19
5Installation 19
6Commissioning/Operation 20
6.1 Note on safety at work 20
6.2 Preparatory activities 20
6.3 Operation of the circuit-breaker 20
6.3.1 Charging the spring energy 20
storage mechanism
6.3.2 Closing and opening 20
6.3.3 Operating sequence 21
7Maintenance 24
7.1 General 24
7.2 Inspection and functional testing 24
7.2.1 Switching devices in general 24
7.2.2 Stored-energy spring mechanism 24
7.2.3 Checking auxiliary switch settings 25
on withdrawable part
7.2.4 Testing of interlock conditions 25
7.2.5 Breaker pole 25
7.3 Servicing 26
7.3.1 Switching devices in general 26
7.3.2 Stored-energy spring mechanism 26
7.3.3 Breaker pole 26
7.4 Repair 27
8Application of the 30
X-ray regulations
We reserve all rights to this publication. Misuse, particularly including
duplication and making available of this manual irdparties is prohibited.
The information supplied is without liability. Subject to alteration.

5
1 Summary
1.1 General
The vacuum circuit-breakers of type VD4 on with-
drawable parts for 36 kV or 40.5 kV rated voltage
are intended for indoor installation in air-insulated
switchgear systems. Their switching capacity
is sufficient to handle any conditions arising
from switching of equipment and system
components under normal operating and fault
conditions, particularly short-circuits, within the
parameters of their technical data.
Vacuum circuit-breakers have particular ad-
switching frequency in the working current range
and/or where a certain number of short-circuit
breaking operations are expected. Type VD4
vacuum circuit-breakers are suitable for auto-
reclosing, and have exceptionally high operating
reliability and long life.
The vacuum circuit-breakers designed in column
form, are supplied as withdrawable modules. Their
basic structure is shown in figures 3/1,3/2,3/7 and
3/8.
1.2 Standards and specifications
1.2.1 Switchgear manufacture
The switchgear complies with the following
specifications in accordance with GB, IEC and
the relevant DIN VDE publications respectively.
●GB/T 11022, IEC 60694 and DIN VDE 0670
part 100, "Common specifications for high-
voltage switchgear and controlgear standards".
●GB 1984 and IEC 62271-100, "High-voltage
alternating-current circuit-breakers".
1.2.2 Installation and operation
The relevant specifications are to be taken into
account during installation and operation,
particularly:
●IEC 61936, Electrical devices with rated
voltage above AC 1 kV
●DIN VDE 0101, Power installations exceeding
AC 1 kV
●DIN VDE 0105, operation of electrical
installations
●DIN VDE 0141, earthing systems for special
power installations with rated voltages over
1 kV
●Accident prevention regulations issued by the
appropriate professional bodies or comparable
organisations.
In Germany, these comprise the following
safety regulations:
- Health and Safety at Work Standard VBG 1
- Health and Safety at Work Standard VBG 4
●Safety guidelines for auxiliary and operating
materials
●Order related details provided by
ABB Xiamen Switchgear Co.,Ltd.
1.3 Operating conditions
1.3.1 Normal operating conditions
Design to GB/T 11022, "Common specification
for high-voltage switchgear and controlgear
standards", IEC publication 60694, VDE 0670
part 100, with the following limit values:
●Ambient temperature:
- Maximum +40˚C
- Highest mean value measured
in 24 hours +35˚C
- Minimum (according to "minus
5 indoor class") -15˚C
●Humidity
- Highest mean value of relative humidity
measured over 24 hours 95%
- Highest mean value of vapour pressure
measured over 24 hours 2.2kPa
- Highest mean value of relative humidity
measured over 1 month 90%
- Highest mean value of vapour pressure
measured over 1 month 1.8kPa
●Maximum site altitude:
1000m above sea level
1.3.2 Special operating conditions
Special operating conditions are to be agreed
on by the manufacturer and user. The
manufacturer must be consulted in advance about
each special operating condition:
●Site altitude over 1000 m:
- Allow for the reduction in the dielectric
strength of the air.
●Increased ambient temperature:
- Current carrying capacity is reduced.
- Provide additional ventilation for heat
dissipation.
●Climate:
- Avoid the risk of corrosion or other damage
in areas:
○with high humidity and/or
○with major rapid temperature fluctuations.
- Implement preventive measures (e.g.
electric heaters) to preclude condensation
phenomena.

6
2
2.1 Technical data
circuit-breakers for fixed installation and on withdrawable part
Rated voltage kV 36 40.5
Rated frequency Hz 50/60 50/60
Rated lightning impulse withstand voltage kV 170 185
Rated power frequency withstand voltage(1min) kV 70 95
Rate of rise of transient recovery voltage kV/µs 0.57 0.69
Peak of transient recovery voltage kV 62 70
Rated operating sequence O-3min-CO-3min-CO
Rated operating sequence with autoreclosing O-0.3s-CO-3min-CO
Guideline values for function times at the rated supply voltage:
Closing time approx. 55~67 ms
Opening time 33~45 ms
Arcing time (at 50 Hz) 15 ms
Total break time 60 ms
Minimum command time on closing 20 ms (120 ms )
2)
Minimum command time on opening 20 ms (80 ms )
2)
1) When the operating voltage is lower than the rated voltage, the same values apply as for rated voltage.
Higher values on request.
2)
≤
≤
Breaker-
type Rated voltage Rated current
VD4... kV A
Rated
short-circuit
breaking
current,
symm.1)
Rated
short-circuit
breaking
current,
asymmetr.1)
Rated
short-circuit
mreaking
current,
(peak.)1)
Rated
short-circuit
duration
kA kA kA s
Pole
Centres
Fixed With-
draw-
able
Weight
Fixed With-
draw-
able
mm approx. kg
3612-25 36 1250 25 27.3 63 4 360 280 320 290
3616-25 36 1600 320 290
3620-25 36 2000 355 340
3625-25 36 2500 355 340
3612-31 36 1250 31.5 34.3 80 4 360 280 320 290
3616-31 36 1600 320 290
3620-31 36 2000 355 340
3625-31 36 2500 355 340
4012-25 40.5 1250 25 27.3 63 4 360 280 290 290
4016-25 40.5 1600 290 290
4020-25 40.5 2000 340 340
4025-25 40.5 2500 340 340
4012-31 40.5 1250 31.5 34.3 80 4 360 280 290 290
4016-31 40.5 1600 290 290
4020-31 40.5 2000 340 340
4025-31 40.5 2500 340 340
Technical data
approx.
If the activating relay contact cannot itself interrupt the release coil current

7
2.2 Technical data
Releases and blocking magnet
Equipment Power consumption1)
AC DC
VA W
Shunt release OFF Y23) , Y9 3) 250 250
Y24), Y9 4) 310 310
Shunt release ON Y33) 250 250
Y34) 310 310
Blocking magnet Y13) 4) 10 10
Undervoltage release Y4
undelayed 11 10
delayed 10 -
Indirect overcurrent release Y7
with intermediate current transformer
two-phase 3.5 2) /15 -
three-phase 2.02) /15 -
1) Approximate values
2) With short-circuited intermediate current transformer
3) Auxiliary voltages AC: 110 and 220 V, DC: 24, 48, 60, 110 and 220 V.
4) Auxiliary voltage AC: 240 V, DC: 125 and 240 V.
2.3 Technical data
Motor-operated mechanisms
voltage consumption 1) (maximum)2)
AC
1) Approximate values
2) At the rated auxiliary voltage
Auxiliary Power Charging time
110 150 15
220 150 15
240 170 15
DC
24 130 15
30 130 15
48 130 15
60 130 15
110 140 15
125 160 15
220 140 15
240 150 15
VVA/W s

8
2.4 Permissible number of vacuum interrupter switching operations in relation to breaking current
See figure 2/1.
a) Circuit-breaker type VD4, 36 kV and 40.5 kV
Rated short-circuit breaking current 25 kA b) Circuit-breaker type VD4, 36 kV and 40.5 kV
Rated short-circuit breaking current 31.5 kA
Figure 2/1: Permissible number of vacuum interrupter operating
cycles n as a function of the breaking current Ia
Breaking current I (kA)
Number of operations n
a
Breaking current I (kA)
Number of operations n
a
10
88
6
4
3
2
10 5
8
6
4
3
2
4
10
88
6
4
3
2
3
10
8
6
4
3
2
2
10
8
6
5 0.05 0.1 0.2 0.3 0.4 0.6 0.8 1 2 3 4 6 8 10 20 30 40 60
1250 A
1600 A
2000 A
2500 A
10
88
6
4
3
2
10 5
8
6
4
3
2
4
10
88
6
4
3
2
3
10
8
6
4
3
2
2
10
8
6
5
1250 A
1600 A
2000 A
2500 A
0.05 0.1 0.2 0.3 0.4 0.6 0.8 1234681020 30 40 60
Rated
current
Rated
current

9
Note:
Transport bracket TK (147) and transport profile TP (148) only fitted for handling.
Remove and store prior to commissioning.
TK = Transport bracket 147
TP = Transport profile 148
K = Entrance for control cables
50.2 = Front partition plate
510
485
194
TP
35
945
905
760
708
188
124
61
100
35
36
14
8
18
204 104 20
K
281
80
4
40
280 280
840
892
25
328
b
1294
900900
516
10
TP
TK
a
295 390
260
50.2
1575
120
85
252
430
400
445
520
535
695
60
85
111
1105
1065
920
868
61 139.5
124
40
35
36
14
36
104
6
4 0
18
8
45
20
2 8
39
158
185
310
381
516
5
900
1294
435
445
555
535
685
75
60
1575
390
260
62
A
360 360
4- 11
40
40
328
M12
DETAIL A
1250/1600A
2000/2500A
O74
O113
O35
O79
ab
Rated current
Fig. 2/3 Dimension of fixed VD4 40.5kV
Fig. 2/2 Dimension of withdrable VD4 40.5kV
2.5 Dimensions
See figure 2/2,2/3.

10
Note:
1) For DC 24V, 30V, 48V, 60V, 110V, 125V, 220V, 240V;AC 110V, 220V,
240V
2) Spring in the diagram is discharged. Standard configurations and
options available for VD4 are contained in the diagram. Also see
relative catalogues and order forms for all possible configuration.
3) Releases and blocking magnets are fundamentally wired with rectifiers
(e.g. magnet holder 45 with integrated rectifiers V1, V2, V3 and V9).
Rectifiers function as free-wheeling diodes with DC supply.
Tag. Available auxiliary circuit components
1) Motor charged, fixed version: Y2, Y3, K0, S1, S3, S4
2) Motor charged, withdrwable version: Y1, Y2, Y3, K0,
S1, S2, S3, S4, S8, S9
Any requirement exceed mentioned above, should be
declared in the contract.
Charging motor
Standard
arrangement
Type 22
1) Only when Y1 is not fitted
2) External operation
Special arrangement for -S5
Type 19 Type 20 Type 21 Type 23 Type 24
– S1 Auxiliary switch on operating mechanism
– S2 Auxiliary switch on blocking magnet
– S3 Auxiliary switch on the breaker shaft
– S4 Auxiliary switch on the breaker shaft
– S5 Auxiliary switch on the breaker shaft
– S7 Auxiliary switch for fault annunciation
(fleeting contact, time ≥30 ms)
– Y1 Blocking magnet
– Y2 Shunt release OFF
– Y3 Shunt release ON
– Y4 Undervoltage release
– Y7 Indirect overcurrent release
– Y9 Second shunt release OFF
– V1 Series rectifier for –Y1
– V2 Series rectifier for –Y2
– V3 Series rectifier for –Y3 and –K0
– V4 Series rectifier for –Y4
– V7 Series rectifier for –Y7
– V9 Series rectifier for –Y9
– M0 Charging motor for stored-energy spring
– K0 Anti-pumping relay
– R0 Series resistor
Fig. 2/4 Circuit diagram for motor-charged operation mechanism

11
Fig. 2/5 Circuit diagram for withdrawable VD4
Circuit diagram for withdrawable VD4
S1 shows the circuit breaker units in the switch position OFF and with the stored-energy spring mechanisms discharged.
X0 Socket with 58 pins Y1 Closing block magnet Y2 1st Shunt release OFF
Y3 Closing release Y4 Undervoltage release Y7 Indirect overcurrent release Y9 2nd Shunt release OFF
S1 Auxiliary switch on mechanism S2 Auxiliary switch on block magnet -Y1 S3,S4,S5 Auxiliary switch on switch shaft S7 Fleeting contact ≥30 ms for c.b. tripped indication K0 Antipumping relay V0-V9 Series rectifier M0 Charging motor
Auxiliary circuit component in circuit breaker Auxiliary circuit component in truck
S8 Limit switch test position S9 Limit switch service position Y0 Block magnet on truck With S5, connect as dashed ①showed. Without S5, connect as dashed ②showed.
Service position Test position

12
Circuit diagram for fixed VD4
Circuit breaker units in the switch position OFF and the stored-energy spring mechanisms is discharged.
Fig. 2/6 Circuit diagram for fixed VD4
Auxiliary circuit component in circuit breaker X0 Socket with 58 pins Y1 Closing block magnet Y2 1st Shunt release OFF
Y3 Closing release Y4 Undervoltage release Y7 Indirect overcurrent release Y9 2nd Shunt release OFF
S1 Auxiliary switch on mechanism S2 Auxiliary switch on block magnet -Y1 S3,S4,S5 Auxiliary switch on switch shaft S7 Fleeting contact ≥30 ms for c.b. tripped indication K0 Antipumping relay V0-V9 Series rectifier M0 Charging motor
Note:
S1 shows the stored- energy spring mechanisms discharged. Available auxiliary circuit components: Y2, Y3, K0, S1, S3, S4 Any requirement exceed mentioned above, should be declared in the contract.
● ●

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3Structure and function
3.1 Structure of the breaker poles
(Figures 3/1, 3/2 , 3/6, 3/7 and 3/8)
The 36 kV and 40.5 kV circuit-breakers of type
VD4 are designed as withdrawable units. The
poles, which are constructed in column form, are
mounted on a torsionally rigid enclosure sub-
structure with rollers. The live parts of the breaker
poles are located in the insulating material
pole tubes and protected from impacts and other
external influences.
With the breaker closed, the current path leads
from the upper contact arm 57.1 and a chamber
holder fixed in the pole tube to the fixed contact
58.2 in the vacuum interrupter 58, then via
the moving contact 58.3 and roller contact to
the lower contact arm 57.2. The switching motion
is effected by means of the insulated coupling
rod with internal contact force springs.
3.2 Structure of the breaker operating mechanism
(Figures 3/3, 3/4, 3/7, 6/1 to 6/5, 7/5 to 7/8)
The operating mechanism located in the housing
substructure is of the stored-energy spring type
andactsonthethreebreakerpoles.Thenecessary
operating energy is stored ready for activation
by charging the spring energy storage mechanism.
The stored-energy spring mechanism essentially
consistsofdrum55.33containingthespiralspring,
the charging system, the latching and operating
mechanism and the linkages which transmit
the force to the breaker poles. In addition, there
are supplementary components such as the
charging motor, releases, auxiliary switches and
the controls and instruments.
Theoperatingmechanismisfundamentallysuitable
for autoreclosing and, due to the short charging
times, also for multi-shot autoreclosing.
The operating mechanism is normally fitted with
a charging motor. There is also a facility for
charging the stored energy spring manually.
There is one rating plate 55.7 with the main data
of the switch equipment on front cover plate left
hand side 50.7, and another on breaker
mechanism housing.
The basic version of the stored-energy spring
mechnism is fitted with the following auxiliary
equipment:
●Shunt release OFF Y2
●Shunt release ON Y3
●Blocking magnet Y1 with auxiliary switch S2
●Five-pole auxiliary switches S3 and S4
●ON-OFF operating shaft 54
●Mechanical switch position indicator 55.4
●Charging condition indicator 55.8 for the stored
energy spring
●Mechanical operating cycle counter 55.5.
●Motor charging mechanism
●Five-pole auxiliary switch S1 to switch the
charging motor
●Anti-pumping relay K0.
The following additional equipment can
be installed:
●Blocking magnet Y0 on the withdrawable part
●Second shunt release OFF Y9
●Indirect overcurrent release Y7
●Auxiliary switch S7 for electrical opening
signalling
●Undervoltage release Y4
●Five-pole auxiliary switch S5
3.2.1 Releases,blockingmagnetandauxiliary switches
(Figures 2/4 to 2/6, 3/3, 6/2, 7/7 and 7/8)
The releases and the blocking magnet
are mounted at the bottom of the stored-energy
spring mechanism.
The allocation of the auxiliary switches can be
seen in the wiring diagram of figure 2/4.
The five-pole auxiliary switch S1 is operated by
the charging condition indicator 55.8. It controls
the charging motor M1, serves as an electrical
interlock for shunt release ON Y3 when the
spring energy storage mechanismisnot sufficiently
charged, and also provides an electrical
switching readiness signal.
Operation of the five-pole auxiliary switches S3,
S4 and S5 is dependent on the switching position
of the circuit-breaker.
Auxiliary switch S3 interrupts the circuit of the
optional additional shunt release OFF Y9 with
the circuit-breaker in the open position, and the
circuits of shunt release ON Y3 and the optional
blocking magnet Y1 with the circuit-breaker in
the closed position. There is one further NOC
for other purposes.
Auxiliary switch S4 interrupts the circuit of shunt
release OFF Y2 with the circuit-breaker in the
open position. One further NOC and three
NCCs are available for annunciation, control
and interlock purposes.

14
Auxiliary switch S5 can be optionally designed
with any possible combination of contacts from
five NOCs to five NCCs. Its contacts are available
for any required control, annunciation or
interlock functions. The auxiliary switch is
normally configured as shown in figure 7/3.
Thesinglepole auxiliary switch S7 (fleeting contact
time 30 ms) serves to provide a fault signal
("breaker released"). With remote control,
the auxiliary switch is necessarily operated via:
●Shunt release OFF Y2 or
●Shunt release OFF Y9 or
●Undervoltage release Y4 or
●Indirect overcurrent release Y7.
Note:
1. Shunt releases OFF (Y2) and ON (Y3)
are exclusively provided for opening and
closing in normal operation. For safety
breaking operations, the second shunt release
OFF (Y9) must be used, in most cases with
a separate control voltage supply.
These three releases are of the solenoid
type and suitable for a large number of
operating cycles.
2. The under voltage release (Y4) and/or
indirect over current release (Y7) are pure
safety and protection releases and must not
be used for switching in normal operation.
3.3 Function
3.3.1 Charging of the spring energy store
(Figures 3/3, 3/10, 6/2, 6/6, 7/7 and 7/8)
To providethenecessarymotiveenergy,thespring
energy storage mechanism is charged via chain
55.34 fitted with ratchet wheel 55.35, either
automatically by a charging motor or by hand in
a vertical pumping action with charging lever
128. The current charging condition is
shown at charging condition indicator 55.8
As a precondition for an autoreclosing sequence,
the operating mechanism is either (re-)charged
after a closing operation automatically by
the charging motor, or it requires (re-)charging by
hand if the operating mechanism is of the manual
type.
3.3.2 Closing procedure
(Figures 3/4, 3/6, 6/1, 6/3 and 7/7)
The closing process is initiated manually by
the doublebitkey145andtheON-OFFoperating
shaft 54, or electrically by activation of shunt
release Y3. The release mechanism then permits
drive shaft 55.30 to be rotated by the (previously)
charged spiral spring. The moving contact 58.3
in vacuum interrupter 58 is moveduntilthecontacts
touchbycamdisk andfurther kinematic links. In
the further sequence of motion, spring
arrangement is tensioned and the appropriate
amount of contact force thus applied. The
available overtravel is higher than the maximum
value of contact erosion during lifetime of the
interrupter. During the closing process, opening
springs are simultaneously tensioned.
3.3.3 Opening procedure
(Figures 3/3, 3/6, 6/3 and 7/7)
The opening procedure is initiated manually by
the doublebitkey145 andthe ON-OFFoperating
shaft 54, or electrically by activation of one
of the releases Y2, Y4, Y7 or Y9. Release
mechanism then permits drive shaft 55.30 to
be turned further by the spring energy
storage mechanism, which is still sufficiently
charged. The opening spring, which is thus
released, moves the contact 58.3 into the open
position at a defined speed.
3.3.4 Autoreclosing sequence
An OFF-ON or OFF-ON-OFF autoreclosing
sequence is activated and checked by the
protection system. It is necessary for the spiral
spring in the operating mechanism to be in
the (re-)charged condition, with the circuit-
breaker in the closed position. The (re-)charging
process is carried out automatically after closing
of the breaker on breakers with motor
charging mechanisms, but must be carried out
manually on breakers without charging motors
(or when the charging motor has broken down).
Opening of the breaker is also possible during
the(re-)chargingprocess, butsub-sequent closing
of the breaker is however blocked until the
charging process has been completed.
3.3.5 Quenching principle of the vacuum interrupter
Duetotheextremelylowstaticinterrupterchamber
pressure of 10-2 to 10-6 pa, only a relatively small
contact gap is required to achieve a high dielectric
strength. The arc is extinguished on one of the
first natural current zeros.
Due to the small contact gap and the high
conductivity of the metal vapour plasma, the arc
drop voltage, and additionally, due to the short
arcing time, the associated arc energy, are
extremely low, which has advantageous effects
on the life of the contacts and thus on that
of the vacuum interrupters.

15
Figure 3/1: Withdrawable part with circuit-breaker, type VD4,
operator's side Figure 3/2: Withdrawable part with circuit-breaker, type VD4, pole side
Figure 3/3: Withdrawable part with circuit-breaker, type VD4,
controls for the circuit-breaker
54 ON-OFF operating shaft
54.1 Link rod
55.4 Switch position indicator
55.5 Operating cycle counter
55.6 Socket for charging lever
55.7 Rating plate
55.8 Charging condition indicator
54
54.1
55.8
55.6
55.5
55.4
55.7
50.2
57.1
57.8
57.2
50.1
50.8
50.1 Earthing contact
50.2 Front partition plate
50.8 Wheel
57.1 Upper contact arm
57.2 Lower contact arm
57.8 Insulating material pole tube

16
Figure 3/6: Partial section of a vacuum interrupter.
58.1 Insulator
58.2 Fixed contact
58.3 Moving contact
58.4 Metal bellows
58.5 Screen
58.6 Guide cylinder
58.7 Lid
Figure 3/4: Withdrawable part with circuit-breaker, type VD4,
left and operator's side view
50 Frame of the withdrawable part
50.3 Actuating pin
50.4 Guide cam
51 Interlock yoke
51.1 Catch pin
51.2 Sliding handle
147 Transport bracket
148 Transport profile
Figure 3/5: Withdrawable part with circuit-breaker, type VD4,
(pole side, below)
50.1 Earthing contact
50.3 Actuating pin
50.4 Guide cam
50.1
50.4
50.3
51
51.1
147
50
50.4
50.3
148
51.2
58.1
58.2
58.3
58.4
58.5
58.7
58.6

17
Figure 3/7: Vacuum circuit-breaker, type VD4, for fixed installation,
operating side. Figure 3/8: Vacuum circuit-breaker, type VD4, for fixed
installation, terminal side.
50.8 Rollers
57.1 Upper breaker terminal
57.2 Lower breaker terminal
57.8 Embedded pole
Figure 3/9: Vacuum circuit-breaker, type VD4, for fixed installation,
version with partition, terminal side.
Figure 3/10: Indicators and controls on a circuit-breaker
for fixed installation.
50.7 Front plate
54.2 Mechanical ON pushbutton
54.3 Mechanical OFF pushbutton
55.4 Mechanical switch position indicator
55.5 Mechanical operating cycle counter
55.6 Socket (for charging lever)
55.7 Rating plate
55.8 Charging condition indicator

18
4Dispatch and storage
4.1 Condition on delivery
●The factory-assembled circuit-breakers on
withdrawable parts are checked at the
works for completeness of the equipment
installed and simultaneously subjected to a
routine test in accordance with GB/T 11022
GB 1984, IEC 60694,DIN VDE 0607 IEC
publication 62271-100, thus verifying their
correct structure and function.
4.2 Packaging
The circuit-breakers on withdrawable parts
are mounted individually on wooden pallets and
sealed in film and/or packed in cardboard for
delivery.
Packaging for overseas shipment:
●Drying agent bags inserted in the film-
sealed packaging.
4.3 Transport
Loadingofthepackageunitsmustonlybecarried
out with a
●crane,
●
fork-lift truck and/or
●trolley jack.
Notes:
●Avoid impact during handling.
●Do not subject to other damaging mechanical
stresses.
●Lifting gear must not be attached to the breaker
poles or parts of the operating mechanism.
●When moving the withdrawable part only use
the sliding handles 51.2 (e.g. for racking
in/out the circuit-breaker unit into/out of the
switchgear panel or for the transport of
the unit in the switchgear room). Do not
bring any force on the frontpartitionplate 50.2
of the withdrawable part.
●Only handle the modules by crane with bolted-
on transport brackets 147, suitable lifting
ropesand crane harness.
●Ensure that the circuit-breaker unit on
the withdrawable part, with its relative high
situated centre of gravity, cannot tip over when
moving it by crane or fork-lift truck, or when
handling it outside the switchgear room.
Figure 4/2: VD4 breaker for fixed installation
Only handle by crane when the lifting lugs are fitted.
Always bear in mind that the high situated centre
of gravity may induce the breaker to tip over!
Figure 4/1: VD4 breaker on withdrawable part
Only handle by crane when the transport bracket
147 and crane harness are fitted.Always bear in
mind that the high situated centre of gravity may
induce the breaker to tip over!
50.2 Front partition plate (Do not stress this plate)
147 Transport bracket (TK)
148 Transport profile (TP)
CrB Crossbar
CrB

19
4.4 Delivery
The duties of the consignee on receipt of
the switching devices at site include the following:
●Checking the delivery for completeness
and freedom from damage (e.g. moisture
and itsadverse effects).
●Any short quantities, defects or damage
intransit:
- Must be precisely documented on
the consignment note.
- The shipper/carrier is to be notified
immediately in accordance with the
liability provisions.
Note:
Always take photographs to document any major
damage.
4.5 Intermediate storage
Intermediate storage of the circuit-breaker unit
in the switch position OFF and the stored-
energy spring mechanisms discharged (Indicator
DISCHARGED: ).
Conditions for optimum intermediate storage:
1. Devices with basic packaging or unpacked:
●A dry and well ventilated storeroom
with climate in accordance with GB/T11022,
IEC 60694, DIN VDE 0670.
●Room temperature which does not fall below
-15˚C.
●Do not remove or damage the packaging.
●Unpackaged devices:
- Are to be loosely covered with
protective sheeting.
- Sufficient air circulation must be
maintained.
●Check regularly for any condensation.
2. Devices with seaworthy or similar packaging
with internal protective sheeting:
●Store the transport units:
- protected from the weather,
- dry,
- safe from damage.
●Check the packaging for damage.
●Check the drying agent
- on arrival of the consignment,
- subsequently at appropriate intervals.
5Installation
(Figures 3/4, 4/1 and 4/2)
Perfect operation of the circuit-breaker depends
on careful and professional handling of
the withdrawable part.
●Allocate each unit to the appropriate switchgear
panel in accordance with the switchgear plan
and the rated electrical data.
●Remove the transport profile 148 and transport
brackets 147.
●Insert the withdrawable part in the switchgear
panel checking for unimpeded motion and
function sequences, including the closing
of primary contacts when the service position
is reached.
●Remove any dirt.
When the switchgears are operated in areas
with high humidity and/or major rapid
temperature fluctuations, there is a risk of dew
deposits which must remain an exception in
normal operating conditions Provisions should
be taken according to section 1.3.2 (special
operating conditions).

Discharged Charged
20
6Commissioning/Operation
(Figures: 3/2, 3/3, 3/10, 6/1 to 6/7)
6.1 Note on safety at work
●The switchgear may only be operated
by specially trained personnel who are familiar
with the characteristics of the particular device.
●Operating circuit breaker in normal condition
in accordance with relevant regulations in GB/T
11022, IEC 60694,is a pre-condition of fault-
free operation.
6.2 Preparatory activities
(Prior to application of primary voltage)
●Check the circuit-breaker for damage and
restore to the proper conditions where
necessary.
●Remove any contamination (particularly on
the insulating materials) which has occurred
during transit, storage or installation.
●Checkthe primaryconnectionsand theearthing
contact 50.1.
●Check the charging motor on circuit-breakers
with motor-operated mechanisms by applying
auxiliary voltage.
●Onbreakerswithmanualchargingmechanisms,
charge the stored energy spring by hand (see
Section 6.3.1).
●Perform a trial opening or closing operation
of the circuit-breaker using the double bit key
145 at the ON-OFF operating shaft 54 (taking
into account any required auxiliary voltage
and any relevant interlocks). Observe switch
position indicator 55.4 and charging condition
indicator 55.8.
●The further procedure results from the
interaction of the truck with the switchgear
cubicle.
See the Operation Manual for the switchgearts.
●Ensure that the Instruction Manual is available
to the operators at all times.
6.3 Operation of the circuit-breaker
(Figures 6/1 to 6/3 and 6/6, 6/7)
6.3.1 Charging the spring energy storage mechanism
Circuit-breakers with charging motors:
●Charging takes place automatically.
●Ifthecharging motor breaks down, thecharging
process can be carried out or completed
manually.
Circuit-breakers with manual charging
mechanisms:
●Insert charging lever 128 into the socket 55.6
and pump up and down for approx. 25 strokes
until the charged condition is displayed.
●When the charged condition is reached,
the charging mechanism automatically
disengages, andfurtherstrokesofthecharging
lever have no effect.
Note:
Charging of the spring energy storage mechanism
by hand should only take place when the truck is
in the test/disconnected or removed position.
Key to the charging condition indications:
As a precondition for an autoreclosing sequence,
the operating mechanism is either (re-)charged
after a closing operation automatically by
the charging motor, or it requires (re-)charging by
hand if the operating mechanism is of the manual
type.
6.3.2 Closing and opening
●Operate the local or remote electrical control
unit.
●Observe switch position indicator 55.4.
The mechanical control system facilitates manual
operation of the circuit-breaker in the switchgear
cubicle even with the door closed:
●Fit double bit key 145 on ON-OFF operating
shaft 54.
●Turn the double bit key approx. 15 clockwiese
until the stop is reached to close the circuit-
breaker, or anti-clockwise to open it.
The operating cycle counter 55.5 is automatically
incremented by one complete figure with each
switching cycle. On completion of a switching
operation the switch position indicator 55.4 in
the window of front cover plate 50.7. shows
the appropriate position of the circuit-breaker.
The anti-pumping relay K0 (wiring diagram
in firgure 2/3) prevents repeated ON-OFF
switching operations if, for example, the breaker
is tripped by a protection relay in response to a
primary side fault while a permanent electrical
closing command is simultaneously applied.
The circuit-breaker can then only be closedafter
the closing command has been interrupted.