ABB VM1 User manual

VM1
Vacuum circuit-breaker
Instruction manual BA 504/02 E

Your safety first – always!
•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.
•Comply in full with the legally recognized standards (DIN VDE / IEC), the
connection conditions of the local electrical utility and the applicable safety
at work regulations.
•Observe the relevant information in the instruction manual for all actions
involving switchgear and switchboards.
•Danger!
Pay special attention to the hazard notes in the instruction manual marked with
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.
If you have any further questions on this instruction manual, the members of our
field organization will be pleased to provide the required information.
That's why our instruction manual begins with these recommendations:
WARNUNG
Anerkannte Regeln der Technik und Betriebsanleitungen
beachten !
Gefährliche Spannung
kann elektrischen Schock und Verbrennungen verursachen.
Vor Aufnahme von Arbeiten jeder Art dieses Gerät unbedingt freischalten,
erden und kurzschließen.
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.

4
Contents Page
6.3.3 Motor-driven movement of the
withdrawable part 12
6.3.4 Withdrawal from the test/disconnected
position onto the service truck 12
6.3.5 Insertion from the service truck into
the test/disconnected position 13
6.4 Circuit-breaker operation 13
7 Maintenance 13
7.1 General 13
7.2 Inspection and functional testing 14
7.2.1 Circuit-breaker in general 14
7.2.2 Magnetic actuator operating mechanism 14
7.2.3 Lock and release device withdrawable
assembly 15
7.3 Servicing 15
7.3.1 Circuit-breaker in general 15
7.3.2 Magnetic actuator operating mechanism 15
7.3.3 Breaker pole 15
7.4 Repair 16
7.4.1 Repair of surface damage 16
7.4.2 Replacement of components 16
7.5 Tests on withdrawable parts with
VM1 type circuit-breaker 17
7.5.1 Motor-driven withdrawable parts 17
7.5.2 Checking the auxiliary switch settings
on withdrawable parts 17
7.5.3 Checking the direction of rotation of the
travel motors on motor-driven
withdrawable parts 17
7.5.4 Checking of interlock conditions 17
7.6 Spare parts, auxiliary materials, lubricants 18
7.6.1 Spare parts 18
7.6.2 Auxiliary materials and lubricants 19
8 Application of the X-ray regulations 20
9 Figures 21
10 Technical data 31
10.1 Technical data, general 31
10.1.1 Technical data for Control electronics 31
10.1.2 Technical data for AC/DC converter 31
10.1.3 Permissible number of vacuum interrupter
operating cycles 32
10.2 Technical data
Circuit-breakers for fixed installation 34
10.2.1 Performance data and weights 34
10.2.2 Dimensions 36
10.2.3 Circuit diagram 41
10.3 Technical data
Circuit-breakers on withdrawable part 43
10.3.1 Performance data and weights 43
10.3.2 Dimensional drawings 45
10.3.3 Wiring diagrams for C.B. on
withdrawable part 51
11 Comparision of designations
to VDE-DIN 40719 Part 2
and IEC 61346-1/IEC 61346-2 57
We reserve all rights to this publication. Misuse, particularly including duplication and making available of this manual –
or extracts – to third parties is prohibited. The information supplied is without liability. Subject to alteration.
©ABB AG, 2005
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
2 Structure 6
2.1 Structure of the operating mechanism 6
2.1.1 Structure of the control module 6
2.1.2 Storage capacitor 6
2.1.3 Sensor system 6
2.2 Structure of the breaker poles 6
2.3 Basic structure of the circuit-breaker
on withdrawable part 7
3 Function 7
3.1 Function of the circuit-breaker operating
mechanism 7
3.1.1 Magnetic actuator 7
3.1.2 Opening and closing procedure 7
3.1.3 Auto-reclosing sequence 7
3.1.4 Circuit-breaker controller 7
3.1.4.1 Function of the standard version 7
3.1.4.2 Extended functions in the full version 8
3.1.5 “Ready“ lamp 8
3.1.6 Blocking magnet -Y0 8
3.2 Wiring diagrams for C.B.
on withdrawable part 8
3.3 Quenching principle of the
vacuum interrupter 9
3.4 Interlocks 9
3.4.1 Interlocks / protection against maloperation
(for C.B. on withdrawable parts) 9
3.4.2 Interlocks for VM1 withdrawable parts 9
3.4.2.1 Interlocks when using ABB withdrawable
assemblies are used 9
3.4.3 Interlocks when using non-original
withdrawable assemblies are used 9
4 Despatch and storage 9
4.1 Condition on delivery 9
4.2 Packaging 10
4.3 Transport 10
4.4 Delivery 10
4.5 Intermediate 10
5 Installation and mounting of the breaker 10
6 Commissioning/Operation 11
6.1 Note on safety at work 11
6.2 Preparatory activities 11
6.3 Movement of the withdrawable
breaker part 11
6.3.1 Manual insertion from the test/
disconnected position to the
service position 12
6.3.2 Manual withdrawal from the service
position into the test/disconnected position 12

5
1Summary
1.1 General
The vacuum circuit-breakers of type VM1 are inten-
ded for indoor installation in air-insulated switch-
gear. Within the limits of their technical data, they
have a switching capacity which is sufficient to
withstand the loads occurring during the switching
on and off of equipment and switchgear com-
ponents under normal and fault conditions.
Vacuum circuit-breakers have particular advantages
for use in systems where the switching frequency in
the operating current range is high, and/or where a
certain number of short-circuit breaking operations
have to be reckoned with. Vacuum circuit-breakers
of type VM1 are prepared for auto-reclosing opera-
tions and are notable for their especially high
operational reliability and extremely long service life
with complete freedom from maintenance.
The vacuum circuit-breakers of type VM1 in column
design can be supplied both as individual units for
stationary mounting and mounted on trucks. Their
basic structure is shown in section “Technical
data“.
1.2 Standards and specifications
1.2.1 Switchgear manufacture
The switchgear complies with the following speci-
fications in accordance with DIN VDE and the
relevant IEC publications:
• VDE 0670, part 1000 and IEC 60694
• VDE 0671, part 100, and IEC 62271-100.
1.2.2 Installation and operation
The relevant specifications are to be taken into
account during installation and operation,
particularly:
• DIN VDE 0101, Power installations exceeding
AC 1 kV
• DIN VDE 0100-410, Erection of power
installations up to 1000 V, protective measures
• VDE 0105, Operation of electrical installations
• DIN VDE 0141, Earthing systems for special
power installations with rated voltages above 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 Standards BGV A1
and BGV A3
• Safety guidelines for auxiliary and operating
materials
• Order related details provided by ABB.
1.3 Operating conditions
1.3.1 Normal operating conditions
Design to VDE 0670, part 1000, "Common
specifications for high-voltage switchgear and
controlgear standards“ and IEC publication 60694,
with the following limit values:
• Ambient temperature:
– Maximum + 40°C
– Maximum 24 hour average + 35°C
– Minimum (according to
„minus 25 indoor class“) – 25°C
• Humidity
– the average value of the relative
humidity, measured over a
period of 24 h, does not exceed 95%
– the average value of the water
vapour pressure, over a period
of 24 h, does not exceed 2.2 kPa
– the average value of the relative
humidity, over a period of
one month, does not exceed 90%
– the average value of the water
vapour pressure, over a period
of one month, does not exceed 1.8 kPa
• Maximum site altitude:
≤1000 m 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,
e.g. to the operating mechanisms, in areas:
• with high humidity and/or
• with major rapid temperature fluctuations.
– Implement preventive measures (e.g. electric
heaters) to preclude condensation pheno-
mena.

6
2Structure
2.1 Structure of the operating mechanism
(Figures 9/13 to 9/16 and 9/28)
The operating mechanism is of the magnetic type.
It fundamentally consists of the magnetic actuator
10, the control module 27 with sensor systems, the
storage capacitor(s) 26 and the linkages which
transmit the force to the breaker poles.
In addition, there are supplementary components
for emergency manual opening and the controls
located on the front of the enclosure.
The actuator 10 acts on the three breaker poles via
lever shaft 18. The storage capacitor 26 provides
the necessary actuating energy on demand.
The mechanical switch positions of the circuit-
breaker are detected by two sensors 15 and 16
directly at lever shaft 18.
There are rating plates 7 with the main data of the
switching device on front plate 1.1, and at the left
side in the mechanism enclosure.
The basic version of the magnetic actuator
mechanism is fitted with the following controls and
instruments:
• ON push-button 3
• OFF push-button 4
• Emergency manual OFF 8
• Mechanical position indicator 6
• Mechanical operating cycle counter 5
• Signal lamp for switching readiness 2
(“Ready“ lamp).
The following may also be installed:
• Five-pole auxiliary switches for switch position
signal: -S3 and -S5.
2.1.1 Structure of the control module
(Figures 9/16 and 9/18a)
Control module ED 2.0 produces a voltage of
80 V from any supply voltage within the
input voltage range, with which the storage
capacitor(s) is/are charged. This is also used to
generate a voltage of 18 V to supply the breaker
controller.
The circuit-breaker controller consists of:
• a microprocessor,
• electronic optocouplers for input,
• relays for output,
• power electronics to control the actuator
coils.
2.1.2 Storage capacitor
(Figures 9/16, 9/18b and 9/28)
The energy for operation of the circuit-breaker is
stored electrically in a capacitor. Circuit-breakers
for breaking currents of 31.5 kA and above are
fitted with two capacitors. The capacitors are
designed in such a way that the energy for an
OFF-ON-OFF operating cycle is provided without
recharging.
The energy stored by the capacitor is permanently
monitored. This is achieved by measuring the
capacitor voltage.
The "Ready" lamp indicates that supply voltage is
applied and the circuit-breaker is ready for the
impending switching operation (see also sections
3.1.5 and 6.2).
The energy stored in the capacitors is one criterion
for illumination of the “Ready“ lamp:
• Case 1: Breaker in the OFF position.
The energy available is sufficient for an ON and
an OFF switching operation.
• Case 2: Breaker in the ON position.
– The energy available is sufficient for an OFF
switching operation.
– The energy available is sufficient for an OFF
switching operation in the first 60 or 120
seconds (from 31.5 kA) after failure of the
auxiliary power supply (see also section 6.4).
If the energy stored is not sufficient, the “NOT
READY“ contact is closed, indicating that the switch
is not ready for operation.
2.1.3 Sensor system
(Figures 9/15 and 9/16)
The systematic use of sensors permits control of
the circuit-breaker without auxiliary switches.
Two inductive proximity switches 15 and 16 are
used to detect the mechanical limit positions,
which also provide for self-monitoring of the
system.
2.2 Structure of the breaker poles
(Figures 9/9, 9/11 and 9/14)
The poles in column design are mounted on the
bracket-shaped rear part of mechanism enclosure 1.
The live parts of the breaker poles are enclosed in
cast resin and protected from impacts and other
external influences.
With the breaker closed, the current path leads
from the upper breaker terminal 25 to the fixed
contact 24.2 in the vacuum interrupter 24, then via
the moving contact 24.1 and the flexible connector
21 to the lower breaker terminal 22.
The switching motions are effected by means of
the insulated link rod 19 with internal contact force
springs 20.

7
2.3 Basic structure of the circuit-breaker on
withdrawable part
(Figures 9/9 to 9/12, 9/19 and 9/24)
The withdrawable part, which can be moved
manually or by a motor if fitted, consists of a steel
sheet structure on which the circuit-breaker with its
ancillary components is mounted.
Insulated contact arms 34 with the spring-loaded
contact systems 34.1 are fitted to the circuit-
breaker poles. These create the electrical
connection to the panel when the withdrawable
part is inserted into the service position.
A multi-pole control wiring plug connector 36
connects the signalling, protection and control
wiring between the panel and the withdrawable part.
The withdrawable assembly and the circuit-breaker
are connected via a multi-pole control wiring plug
connector 37.
As soon as the withdrawable part 31 has been slid
into the panel and its base frame has engaged in
the test/disconnected position, it is positively
connected to the panel. At the same time, it is
earthed by its travel rollers in their rails. The
magnetic actuator mechanism of the circuit-
breaker, including its controls and indicators, is
accessible at the front of the withdrawable part.
Withdrawable parts of the same version are
interchangable. With the same dimensions but dif-
ferent circuit-breaker equipment, coding of the
control wiring plug prevents impermissible
combinations of withdrawable parts and panels
(see figure 9/17).
3Function
3.1 Function of the circuit-breaker operating
mechanism
3.1.1 Magnetic actuator
(Figure 9/14)
The actuator is the heart of the circuit-breaker
operating mechanism. It combines the following
integrated functions:
• latching in the limit positions,
• release,
• switching.
The actuator is a bistable permanent magnet
system in which the armature motion is effected by
activating the ON or OFF coil. In the limit positions,
the armature is held in place magnetically by the
field of two permanent magnets. Release of a
switching operation is effected by exciting one of
the two coils until the latching force of the perma-
nent magnets is exceeded temporarily.
3.1.2 Opening and closing procedure
(Figures 9/13 to 9/14)
The opening and closing processes can be remote
controlled by applying a voltage to input -Y3 (ON)
and -Y2 (OFF) (see also sections 10.1.1a and 6.2).
The breaker can be operated locally by pressing
push-buttons 3 and 4.
In the closing process, the armature motion acts
direct via lever shaft 18 on the moving contact 24.1
until the contacts meet.
In the further motion sequence, the pretensioned
spring arrangement 20 is tensioned to 100% and
the necessary contact force thus applied. The
available overtravel is greater than the maximum
contact burn-off throughout the life of the vacuum
interrupter.
3.1.3 Reclosing sequence
The operating mechanism is fundamentally
prepared for reclosing, and with the short
recharging time of the storage capacitor (max. 3 s)
it is also suitable for multi-shot reclosing.
3.1.4 Circuit-breaker controller
The control module is available as a standard
version and as a full version.
3.1.4.1Function of the standard version
All the conditions for control of the opening and
closing commands to the magnetic actuator are
defined in a microprocessor:
• Supply voltage must be applied to the AC/DC
converter.
• The storage capacitor must be sufficiently
charged for the next switching operation:
Switch position Storage capacitor
energy for:
OFF ON and OFF
ON OFF
• The closing coil can only be activated when the
breaker is OFF.
• Closing is disabled when an opening command
is simultaneously active.
• Deactivation of the opening or closing coil takes
place when the relevant limit position has been
reached.
If the ON limit position is not reached within 70 ms
during a closing operation, an opening operation is
immediately initiated so as to ensure a defined
switch position in all cases.
• The anti-pumping system ensures that only one
ON-OFF operation is performed when a closing
command is active and followed by an opening
command. The active closing command must
be cancelled and reset for the next closing
operation.
• Activation of the closing coil (-Y1) can be
blocked by an external blocking signal.

8
• Input -Y1 “closing lock-out” (closed circuit shunt
release) must be energized for the circuit-
breaker to be closed.
• In the as-delivered condition of devices for
stationary-mounted installation (without wiring),
this input is therefore provided with a voltage of
80 V by an internal circuit as soon as the storage
capacitor is charged.
• If this closed circuit shunt release -Y1 is used to
monitor an external voltage, the voltage to be
monitored is to be applied to this input.
3.1.4.2 Extended functions in the full version
In addition to the functions of the standard version,
the full version contains the following functions:
• Untervoltage release -Y4
This input switches the VM1 off if the voltage
applied falls below the tolerance range stipulated in
IEC 62271.
The nominal value of the voltage to be monitored is
set at the works in accordance with the
specification in the order.
For the coding of the DIP switches, see
figure 9/18a.
In order to prevent switch-off when the voltage
briefly falls below the specified level (e.g. on motor
start-up), a tolerance time can additionally be set.
For the coding of the DIP switches, see
figure 9/18a.
If no voltage is applied to -Y4, the VM1 cannot be
closed.
The function of -Y4 can on the control module be
deactivated if it is not required. If the function of -Y4
is deactivated, the VM1 can be opened and closed
without any voltage being applied.
For the coding of the DIP switches, see
figure 9/18a.
• Monitoring of the closing and opening coil of the
actuator
This function monitors the closing and opening coil
of the actuator for cable breakage. If such a
breakage is detected, the “Ready” lamp on the
front of he switching device goes out and
corresponding signals (-S11, -S12) are issued.
• Additional contacts for position signalling
An additional pair of NO contacts to signal the ON
and OFF positions are made available by the
controller (-S43, -S44).
• Direct opening without microprocessor is
supported
The second opening input -Y9 (in the full version on
the control module) is designed in such a way that
an opening command is executed directly without
being passed through the microprocessor.
3.1.5 The “Ready” lamp monitors the following
conditions:
• supply of auxiliary power to the VM1 circuit-
breaker (see also section 6.2),
• detection of a defined ON or OFF position by the
position sensors,
• monitoring of the controlled function of the
microprocessor – Watchdog,
• sufficient voltage at the capacitor for the next
switching operation (see also section 2.1.2) and
• continuity of the actuator coils (only full version).
The “Ready” lamp does not monitor the status of
inputs -Y4 and -Y1 (see figure 9/16).
A flashing “Ready” lamp signals recharging of the
capacitor. Switching readiness is enabled during
that time.
3.1.6 Blocking magnet -Y0
(Figure 9/30)
Blocking magnet -Y0 fitted to:
• manually movable VM1 withdrawable parts,
• ZS8.4 withdrawable parts without mechanical
plug connector interlock.
The blocking magnet prevents the withdrawable
part from being moved when no supply voltage is
applied. This interlock is cancelled by applying
supply voltage to blocking magnet -Y0.
3.2 Wiring diagrams for C.B. on withdrawable part
(Figures 10/14 to 10/17 and 9/17)
• The wiring diagrams, shown in figures 10/14 to
10/17, cover the basic equipment and all the
possible configurations of the various VM1
series. The scope of equipment which can be
installed within each series is detailed in the rele-
vant switching device list. The actual equipment
installed in the individual case can be found in
the order documents.
Panel type Plug type Figure no.
• ZS1, UniGear 58-pin control 10/14 and
type ZS1, wiring plug 10/15
UniSafe,
Powerbloc
and Mounting
frame
• ZS8.4 64-pin control 10/16 and
wiring plug 10/17
• It is possible to encode the control wiring plug
connector to define the assignment of the
breaker withdrawable parts to particular panels.
Impermissible combinations of withdrawable
parts and panels are thus prevented. The
possible encoding of a 58-pin plug is shown in
figure 9/17.

9
3.3 Quenching principle of the vacuum interrupter
Due to the extremely low static interrupter chamber
pressure of 10-4 to 10-8 hPa, only a relatively small
contact gap is required to achieve a high dielectric
strength. The vacuum 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.
3.4. Interlocks
3.4.1 Interlocks/protection against maloperation
(for C.B. on withdrawable parts)
(Figure 9/10)
A series of interlocks are provided to prevent
dangerous situations and any maloperation. The
interlocks of the panel system ZS and/or the
Powerbloc/mounting frame, which are normally
effective, are as follows (concerning the circuit-
breaker):
• The withdrawable part can only be moved from
the test/disconnected position into the service
position (and back) with the circuit-breaker open
(that means that the breaker must be opened
before)
• The circuit-breaker can only be closed if the
withdrawable part is precisely in the defined test
position or service position (electrical interlock).
• The circuit-breaker can only be opened
manually in the service or test position when no
control voltage is applied, and it can not be
closed.
• The panel is equipped with devices which allow
the connection and disconnection of the control
wiring plug 36.1 only in the test/disconnected
position.
• Details of any additional interlocks, e.g. in
connection with a blocking magnet on the
withdrawable part and/or earthing switch
operating mechanism, can be found in the order
documents for each individual case.
3.4.2 Interlocks for VM1 withdrawable parts
3.4.2.1 Interlocks when ABB withdrawable assemblies
are used
(Figures 9/12, 9/29 and 10/14 to 10/17)
1.) The VM1 can only be closed via input -Y3 when
a voltage of 24 V to 240 V AC/DC is applied to
input -Y1 (electrical closing lock-out).
2.) The VM1 can only be closed when the with-
drawable assembly is in service or test position.
In the intermediate positions, the voltage for the
closing lock-out is interrupted by auxiliary switches
-S8/-S9.
3.) A mechanical interlock located in the with-
drawable assembly prevents a closed breaker
being moved from the test position into the
service position.
3.4.3 Interlocks when non-original withdrawable
assemblies are used
(Figures 9/29, 10/6 and 10/14 to 10/17)
VM1 circuit-breakers which are not mounted on
ABB withdrawable part must be fitted with one or
two additional auxiliary switches which are
dependent on the mechanical interlocks. These
must interrupt the input voltage to the electrical
closing lock-out (input -Y1).
In a similar manner to auxiliary switches-S8 and-S9
on the ABB withdrawable part, no further electrical
pulse may be received after the first half revolution
of spindle system 35.1, and it may only be re-
applied after the last half revolution. This ensures
that the circuit-breaker cannot be closed when the
withdrawable part is in an intermediate position.
A mechanical interlock as described in 3.4.2.1
part 3.) is to be implemented to prevent movement
of a circuit-breaker which is closed. The slide
blocker 41.2 on the VM1 (optional accessory for
stationary mounted breakers) can be used for this
purpose: if the VM1 is closed, the slide blocker is
outside base plate 41.4. Figure 9/29 shows pawl
35.5 on the ABB withdrawable part. With the
circuit-breaker closed, pawl 35.5 cannot be
rotated in the anti-clockwise direction. This
prevents movement of the withdrawable assembly
and therefore movement of the circuit-breaker.
Note:
Additionally fitted interlocks must not exert any
force on the operating mechanism of the circuit-
breaker.
If the interlock mechanism projects beyond the
base of the circuit-breaker casing, measures must
be taken to prevent the the circuit-breaker from
weighing down on the interlock, for instance during
transport.
4Despatch and storage
4.1 Condition on delivery
• The factory-assembled switching devices are
checked at the works for completeness of the
equipment installed and simultaneously sub-
jected to a routine test in accordance with
VDE 0670, part 1000 or IEC publication 60694,
thus verifying their correct structure and
function.
Storage capacitor 26 is discharged by the
connected control electronics, and has a terminal
voltage of < 10 V when delivered.

10
5Installation and mounting of the
breaker
Careful and professional installation of the
switchgear is one of the fundamental conditions of
trouble-free circuit-breaker operation.
• Install the mechanism enclosure in the panel
without distortion, placing a dished washer
under the nut and bolt head at each of the four
mounting points (depending on the order).
• Connect the main terminals without any residual
tension or pressure forces, exerted for example
by the conductor bars.
• When connecting the conductor bars, the bolts
must be inserted to the depth shown on the
dimensional drawing.
• Observe the tested terminal zone where
appropriate.
• Use DIN bolts of tensile class 8.8 together with
dished washers to fasten the conductor bars.
• Only use the tightening torques shown in the
following table.
• Remove any contamination (see also section
7.3.1.)
4.2 Packaging
The switching devices are mounted individually on
a wooden pallet 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
Loading of the package units must only be carried
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.
Use lifting bores 1.2 and lifting lugs, e.g. in figure
9/13 and in the dimensional drawings.
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 its
adverse effects).
• Any short quantities, defects or damage in
transit:
– Must be precisely documented on the
consignment note.
– The shipper/carrier is to be notified
immediately in accordance with the liability
provisions of the German general conditions
for forwarders (ADSp/KVO).
Note:
Always document any major damage with
photographs.
4.5 Intermediate storage
Conditions for optimum intermediate storage:
1. Devices with basic packaging or unpacked:
• A dry and well ventilated storeroom with
climate in accordance with VDE 0670, Part
1000 / IEC 60694.
• Room temperature which does not fall below
–25°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.
• If the maximum storage period starting from
the date of packaging has been exceeded:
– The protective function of the packaging is
no longer guaranteed.
– Suitable action must be taken if intermediate
storage is to continue.
3. Storage capacitor 26:
There is no time limit on storage when the above
conditions are fulfilled.

11
6Commissioning / Operation
6.1 Notes on safety at work
• Operation is only permissible by specially trained
personnel who are familiar with the
characteristics of the particular switching device.
• Observe the relevant specifications as set out in
section 1.2.
• The discharge energy of the storage capacitor
is greater than 350 mJ. The procedure for
discharge of the storage capacitor as set out in
section 7.1 is to be observed.
6.2 Preparatory activities
(before connecting the primary voltage)
• Check the circuit-breaker, withdrawable part,
contact arms, insulating parts etc. for damage,
and restore to their proper condition if
necessary.
• Remove any dirt collected during transport,
storage or installation (particularly on the
insulating materials) as described in section
7.3.1.
• Remove lifting lugs T (Figures 10/3, 10/4, 10/5,
10/8, 10/9 and 10/12).
• Check the primary and secondary connections
and the protective earth conductor connection.
• Check the connection of the main earthing bar
with the station earthing conductor (DIN VDE
0141).
• Remove all material residues, foreign bodies and
tools from the switchgear.
Recommended
tightening torque 1)
Nm
Lubricant 2)
Thread Without Oil or
(try) grease
M 06010.5 04.5 0
M 08026,5 10,5 ,5
M 10 050,5 20,5 ,5
M 12 086,5 40,5 ,5
M 16 200,5 80,5 ,5
1) • The rated tightening torques for fasteners without
lubrication are based on a coefficient of friction for the
thread of 0.14 (the actual values are subject to an
unavoidable, partly not inconsiderable, spread).
• Rated tightening torques for fasteners with lubrication in
accordance with DIN 43 673.
2) Thread and head contact surface lubricated.
Any tightening torques which deviate from those in the general
table (e.g. for contact systems or device terminals) are to be
taken into account as stated in the detailed technical
documentation. It is recommended that the threads and head
contact surfaces of the bolts should be lightly oiled or greased,
so as to achieve a precise rated tightening torque.
• Properly refit all covers, etc., removed during
assembly and testing processes.
• Connect the supply voltage (Figures 10/6 and
10/14 to 10/17). Input -Y43): ”OFF command”
(closed-circuit shunt release) and input -Y1:
”Closing lock-out” (closed-circuit shunt release)
must be supplied with power before the circuit-
breaker can be closed.
• For this reason, an internal circuit applies a
voltage of 80 V to these inputs as soon as the
storage capacitor is charged in as-delivered
condition of devices with no connector wiring.
• If these shunt releases are used to monitor a
voltage, the voltage to be monitored is to be
applied to these inputs (see also section 4.4.1).
• Should the voltage fail at shunt release -Y1,
closing is impossible.
• Should the voltage fail at shunt release -Y43), the
breaker opens.
• Storage capacitor 26:
In the case of a (voltage-free) storage period of
more than 2 years, an increased current
consumption, which is nevertheless below 2 A,
occurs at the AC/DC converter during
commissioning as a result of reforming.
• Check mechanical and electrical interlocks for
effectiveness, without using force.
• Perform test closing and opening of the circuit-
breaker by pressing push-buttons 3 and 4
(see Figure 9/19).
• On motor-driven withdrawable parts, check the
direction of rotation of the travel motors as
described in section 7.5.3.
• For any further questions on the functions of the
withdrawable circuit-breaker part and its testing,
see section 7.5.
• Instruct the local operators in the fundamental
details of regular handling of the switchgear.
6.3 Movement of the withdrawable breaker part
(Figures 9/12, 9/19 and 9/23 to 9/25)
Perform switching operations with the front doors
shut.
6.3.1 Manual insertion from the test/disconnected
position to the service position
• Connect control wiring plug 36.1.
• Close the front door.
• Ensure that the circuit-breaker is in the OFF
position.
• Fit hand crank 38 on square spigot 35.2 of the
spindle mechanism 35.1.
3) Full version on the control module, optional

12
Note:
In order to avoid damage to the operating
mechanism, use the original hand crank only.
– Standard version without slip clutch
– Optional version with slip clutch
• Turn the crank clockwise according the table
until the stop is reached and the withdrawable
part 31 is in the service position.
Note:
Do not use force to move the withdrawable
breaker part.
Maximum torque 25 Nm!
Comply with the conditions for movement of the
withdrawable part as set out in section 7.5.4!
Number of crank turns
Panel type 12/17.5 kV 24 kV
ZS1, UniSafe,
UniGear
type ZS1, 20 30
Powerbloc and
Mounting frame
ZS8.4 without
tee-off
partitioning 20 25
ZS8.4
with tee-off
partitioning 25 25
• Observe the position indicator in the front door.
• Remove hand crank 38 by first pressing slightly
against the hand crank and then remove.
Note:
When removing the crank, it is essential to ensure
that the spring-loaded guide 35.6 slides into the
untensioned front position. Spindle 35.1 is thus
locked in place, preventing inadvertent turning of
the spindle. Turning of the spindle opens auxiliary
switches -S8/-S9 and thus prevents the circuit-
breaker from being operated.
Note:
The withdrawable part must not be stopped at any
position in the travel range between the service
position and test/disconnected position!
6.3.2 Manual withdrawal from the service position into
the test/disconnected position
• Ensure that the circuit-breaker is in the OFF
position.
• Reverse the procedure described above for
insertion into the service position.
Note:
Withdrawable parts with blocking magnet -Y0 may
not be forcibly moved during power failures. In
such a case they are blocked in the service and test
positions. For deblocking, see section 7.5.4.
6.3.3 Motor-driven movement of the withdrawable part
• Briefly operate the electrical control for insertion
or withdrawal (the withdrawable part then
automatically moves into the opposite position).
• Observe the position indicator in the front door.
Note:
When the motor fails, the withdrawable part can be
moved in emergency manual operation. If the drive
motor fails during movement of the withdrawable
part, the withdrawable part must be moved into a
limit position in emergency manual operation.
Emergency manual operation:
Emergency manual operation is carried out with the
hand crank 38 on the spindle mechanism 35.1, in a
similar manner to operation of a withdrawable
breaker part with manual systems:
• Turn off the supply voltage (m.c.b.), since the
motor would otherwise be braked electrically.
• Turn hand crank 38 in the required direction.
When the withdrawable part moves, the motor
turns. The motor functions in such a case like a
generator, i.e. it can lead to reverse voltages in
the terminals.
• The motor protection device must not be
changed from the specified type and rated
value, or the behaviour of the permanent magnet
motor could be irreversibly impaired.
6.3.4 Withdrawal from the test/disconnected position
onto the service truck
(Figures 9/24 and 9/25)
• Open the door of the circuit-breaker
compartment.
• Pull out control wiring plug 36.1 and place it in
the receptacle provided.
• Position service truck 40 with the guide pins
40.2 of the adjustable bench top at the correct
height facing the panel front, and allow catch
40.3 to engage.
• Move sliding handles 35.3 inwards against the
springs to release withdrawable part 31,
withdraw onto the service truck and secure it in
the catches on the truck.
• Press the release lever (at the front underneath
the bench top) and release the service truck
from the panel.
6.3.5 Insertion from the service truck into the test/
disconnected position
• Carry out the procedure as described above for
withdrawal, changing the order accordingly.

13
7Maintenance
Maintenance serves to preserve trouble-free
operation and achieve the longest possible working
life of the switchgear. In accordance with
DIN 31 051 and IEC 61208, it comprises the
following closely related activities:
Inspection: Determination of the actual condition
Servicing: Preservation of a functional condition
Repair: Measures to restore the functional
condition
7.1 General
All vacuum circuit-breakers are characterised by a
simple and robust construction. They have a long
life expectancy. There is no adverse effect on the
vacuum, even from frequent switching of operating
and short-circuit currents.
The typical life expectancy of a VM1 vacuum
circuit-breaker is determined by:
• Maintenance-free, potted vacuum interrupters
for up to 30,000 mechanical operating cycles.
• Magnetic actuator mechanism, maintenance-
free under normal service conditions:
– up to 100,000 operating cycles for all
breakers with a breaking current ≤25 kA and
a rated current ≤1250 A.
– up to 50,000 operating cycles for all breakers
with a rated current of ≥1600 A (high-current
breakers).
– up to 50,000 operating cycles for all breakers
with a breaking current ≥31.5 kA.
• Maintenance-free control module with sensors
and without auxiliary switches.
• Auxiliary switch ON/OFF position signalization
(optional) up to 30,000 switching cycles.
• Withdrawable part: With careful operation and
appropriately performed inspection work, up to
1000 movement operations can be achieved.
See also IEC 60298.
The service life data fundamentally apply to all
components which are not directly influenced by
the operator.
Components operated manually (movement of the
withdrawable part, etc.) may deviate, depending on
how they are handled.
6.4 Circuit-breaker operation
(Figures 9/19 to 9/22)
The power supply has been established when the
“Ready“ lamp 2 lights up.
Please also note the remarks in Section 3.1.5.
1. Closing:
Remote control by applying a voltage to input
-Y3 (see sections 10.1.1a and 6.2) or locally by
pressing ON push-button 3.
2. Opening:
Remote control by applying a voltage to input
-Y2 (see also sections 10.1.1a and 6.2) or locally
by pressing OFF push-button 4.
3. Opening in case of power failure:
a) Opening via the remote control system or by
pressing push-button 4 is initially still possible:
– up to 60 seconds for breaking currents up
to 25 kA
– up to 120 seconds for breaking currents up
to 31.5 kA.
b) Manual emergency opening is possible
beyond these times.
Insert emergency manual operation lever 28
into socket 8 in the front plate and turn it anti-
clockwise to open the circuit-breaker.
During this the auxiliary spring 29 on the lever
28 will be charged at first. After a movement
of about 65°to 70°a resistance must be
overcome which is generated from the rem-
oval of the armature in the actuator. Then the
circuit-breaker is swiched off. A further
rotation will be a free movement.
c) On power failure and after expiry of the times
stated under 3a), the circuit-breaker remains
in its current position. If an automatic switch-
off is desired immediately on expiry of the
times stated under 3a), this behaviour can be
effected by activating DIP switch I 1004/1
(see figure 9/18a, “AUTO-OFF on declining
capacitor voltage”).
4. Closing on failure of the supply voltage:
Closing is not appropriate and not possible.
5. Operating cycle and position indicators on the
switching device:
After each operating cycle (ON-OFF), the operating
cycle counter 5 is incremented by one full digit.
On termination of a switching operation, the
position indicator 6 displays the relevant switch
position.
6. Anti-pumping system:
• The circuit-breaker controller ensures that
closing of the circuit-breaker is blocked when
an opening command is active.
• When closing on a subsequent opening
command, further closing with the still active
closing command is blocked. The closing
command must be issued again for the next
closing operation.

14
The servicing intervals and scope are determined
by the environmental influences, the switching
frequency and the number of short-circuit breaking
operations.
Note:
The following must be observed for all maintenance
work:
• The relevant specifications in section 1.2.2.
• Notes on safety at work in section 6.1
• Standards and specifications in the country of
installation.
Maintenance work may only be performed by fully
trained personnel, observing all the relevant safety
regulations. It is recommended that ABB after-
sales service personnel should be called in, at least
during the performance of servicing and repair
work.
While the work is in progress, and if the work
permits, all supply voltage sources must also be
disconnected and secured to prevent re-
connection.
Note:
In order to prevent accidents (particularly injury to
hands!) extreme care should be taken during all
repair work on the operating mechanism,
especially with front plate 1.1 removed.
The energy of the storage capacitor can be
released uncontrollably during incorrect handling!
Procedure for capacitor discharge:
1. Switch circuit-breaker on.
2. Switch supply voltage off (m.c.b.).
3. Switch circuit-breaker by pressing push-buttons
3 and 4 with cycle: OFF/ON/OFF.
The ”Ready“ lamp will go out when this
switching cycle is completed, i.e., the switch is
no longer ready for switching operations.
4. After the following waiting times the storage
capacitor will have discharged down to lower
than 15 V:
– after approx. 4 minutes for breaking currents
up to 25 kA
– after approx. 8 minutes for breaking currents
of 31.5 kA and above.
Where appropriate in individual cases, further
information can be found in the technical
documentation appurtenant to the switchgear
system (e.g. agreed special operating conditions)
in addition to this operating manual.
7.2 Inspection and functional testing
7.2.1 Circuit-breaker in general
• Under normal operating conditions, inspection
within the stated number of operating cycles is
not necessary.
• Inspection may be necessary under exceptional
operating conditions (including adverse climatic
conditions) and/or particular environmental
stresses (e.g. serious contamination and ag-
gressive air).
• The inspection primarily comprises visual exa-
mination for contamination, corrosion, moisture
and discharge phenomena on the high voltage
side.
If an irregular condition is found, appropriate
maintenance work is to be initiated.
• No external discharge may occur on the
surfaces of equipment at operating voltage. This
can, for example, be detected by characteristic
noises, a clearly perceptible smell of ozone, or
visible glowing in the dark.
• Visual checking of the isolating contact system.
We recommend to turn alternately the contact
system in order to clean the inner contact points
of the contact system.
The contact points should be cleaned if signs of
unperminable overheating (discoloured surface)
are visible (see section Repair)
• If irregular conditions are detected, then
corresponding repair measures should be
initiated.
7.2.2 Magnetic actuator operating mechanism
(Figures 9/19 and 9/28)
A first functional test of the operating mechanism is
to be performed:
• after the stated number of operating cycles, or
• during maintenance work as described in
section 7.2.1.
Before the functional test, open the circuit-breaker
and
• move it into the test position (withdrawable
breaker) or
• isolate and secure the working area in
accordance with the Safety Regulations to DIN
VDE / IEC (with stationary mounted breakers).
• Observe the procedure for capacitor discharge
as set down in section 7.1.
• Perform visual examination of the condition
(removing front plate 1.1), e.g.:
– the lubrication at the rotary bearings,
– the operating cycle counter,
– the sensor mounting,
– the position indicator.

15
Scope of functional testing:
• Connect the supply voltage.
• Perform several switching operations under no
load. This is predominantly applicable to circuit-
breakers which are rarely operated under normal
circumstances.
To check the storage capacitor, switch the
circuit-breaker rapidly OFF-ON-OFF once,
pressing push-buttons 3 and 4 rapidly in
succession.
• The LEDs on the inductive proximity switches 15
and 16 are activated when the circuit-breaker
has reached its OFF and ON limit positions.
7.2.3 Withdrawable part
• The inspection should always include a visual
examination of the withdrawable part assembly.
Special attention is to be paid to those parts
which may possibly be damaged by improper
handling.
• Perform a visual check on the condition of the
isolating contact system. It is recommended that
the contact system be turned alternately so that
its inner contact points can be cleaned.
If there are signs of impermissible overheating
(discoloured surface), the contact points are to
be cleaned (see the section on repairs).
• The interlock conditions and the ease of
movement of the withdrawable assembly are to
be checked as described under “Repair”.
When checking the interlock conditions, it is es-
sential to ensure that no force is used.
Maximum torque 25 Nm!
7.3 Servicing
7.3.1 Circuit-breaker in general
If the necessity of cleaning is established during
inspections as described in 7.2.1, the following
procedure is to be adopted:
• Prior to cleaning, isolate and secure the working
area if necessary in accordance with the safety
regulations of DIN VDE and IEC.
• Observe the procedure for capacitor discharge
as set down in section 7.1.
• Cleaning of surfaces in general:
– Remove weakly adhering dry dust deposits
with a soft dry cloth.
– Remove more strongly adhering dirt with a
slightly alkaline household cleanser, or with
Rivolta BWR 210.
• Cleaning of insulating material surfaces and
conductive parts:
– Minor contamination: with Rivolta BWR 210.
– Strongly adhering contamination: with cold
cleanser 716
After cleaning, wipe down with clean water and
dry carefully.
• Observe the manufacturer’s instructions and the
special ABB instruction manuals BA 1002/E or
BA 1006/E on safety at work.
Note:
Use only halogen-free cleaning agents. Never use
1.1.1-trichloroethane, trichloroethylene or carbon
tetrachloride!
7.3.2 Magnetic actuator operating mechanism
The magnetic actuator mechanism is mainte-
nance-free up to the number of operating cycles
stated in section 7.1.
7.3.3 Breaker pole
The breaker pole with the vacuum interrupter is
maintenance-free up to the permissible number of
operating cycles as sent down in section 10.1.3.
The working life of the vacuum interrupter is defined
by the sum current limit corresponding to the
equipment data in individual cases in accordance
with section 10.1.3:
• When the sum current limit is reached, the
complete breaker poles are to be replaced.
Note:
Dismantling and replacement of the breaker poles
should only be performed by the ABB after-sales
service or adequately trained specialist staff, in
particular with regard to the necessity for precise
setting.
The following equipment, for example, can be used
to check the vacuum (without dismantling the
circuit-breaker):
• VIDAR vacuum tester, from
Programma Electric GmbH
Bad Homburg v.d.H.
Germany
The following test values have to be set for
checking of the internal interrupter chamber
pressure with the VIDAR vacuum tester:
Rated voltage of DC test voltage
the circuit-breaker
12 kV 40 kV
17.5 kV 40 kV
24 kV 60 kV.
Testing is to be performed at the rated contact
distance in the OFF condition.
Procedure for vacuum interrupter testing for
stationary mounted switching devices:
• Isolate and secure the working area in
accordance with the Safety Regulations to DIN
VDE / IEC.
• Open the VM1 circuit-breaker.

16
– Fit the contact system back to front on the
thin end of arbor 39, and slide it forwards onto
the thicker part of the shank.
– Fit arbor 39 onto the relevant contact arm 34,
slide the contact system 34.1 over onto the
contact arm, and withdraw the arbor.
– Check all contact fingers and annular tension
springs for perfect fit.
Note:
The set installation position of contact arms 34
must not be changed by the improper use of
force.
7.4.2 Replacement of components
• Only remove and reassemble circuit-breaker
parts and accessories when the breaker has
been switched off and the working area is to be
isolated and secured against reclosing.
• All supply voltage sources must be disconnec-
ted and secured to prevent reconnection during
the removal and installation work.
• The storage capacitor is to be discharged in
accordance with the instructions in section 7.1.
1. Circuit-breaker control unit:
Replacement of the circuit-breaker control unit
may only be performed by ABB after-sales
service staff or specially trained skilled
personnel. Reason: the internal sequence times
for the control unit are set by jumpers on each
control unit.
2. Withdrawable assembly:
(Figures 9/10, 9/12, 9/29 and 9/30)
• Disconnect plug connector 37.
• For motorized withdrawable assemblies,
remove the two socket head bolts which are
accessible from below the assembly.
• Unbolt the circuit-breaker from the
withdrawable assembly (4 x M12 bolts).
• Mount the circuit-breaker on a new with-
drawable assembly in the reverse order.
• Check the settings of the slide blocker 41.2:
– The circuit-breaker is in the ON position.
– The distance between pawl 35.5 on the
withdrawable assembly and slide blocker
41.2 must be 0.1 + 0.4 mm. If a correction
is necessary, the screws 41.3 are to be
released and the slide blocker 41.2 is to be
adjusted by a feeler gauge. Thereafter the
screws must be fixed again.
• Earth all poles of the VM1 circuit-breaker on one
side.
• Connect the earthed test lead of the VIDAR
vacuum tester conductively to the station earth.
• Connect the high voltage test lead of the VIDAR
vacuum tester with phase L1 of the unearthed
pole side and test the vacuum interrupter
chamber with the circuit-breaker contact gap
open. Repeat for phases L2 and L3.
Note:
Connected cables may lead to a ”defective”
indication on the vacuum tester as a result of their
cable capacitance. In such cases, the cables are to
be removed.
7.4 Repair
7.4.1 Repair of surface damage:
Circuit-breaker part in general
• Sheet steel parts, painted:
– Remove rust, e.g. with a wire brush.
– Grind off paint coat and degrease.
– Apply anti-rust primer and top coat.
– Use a top coat in the standard colour
RAL 7035 or the relevant special colour.
• Sheet steel parts with aluminium-zinc surfaces
and chromated functional parts:
– Remove white rust, with a wire brush or
cleaning pad (e.g. Scotch-Brite, white).
– Remove loosely adhering particles with a dry
cloth.
– Apply zinc spray or zinc dust primer.
• Functional parts, phosphated:
– Remove rust, with a wire brush or cleaning
pad (e.g. Scotch-Brite, white).
– Clean with a dry cloth.
– Grease with Isoflex Topas NB 52 lubricant.
Withdrawable circuit-breaker part in general:
• Where required, regrease or thoroughly clean
slide plates and bearings in the panel and
regrease them with Isoflex NB 52 lubricant.
Remove the contact system for thoroughly
cleaning as described below (Figures 9/26 and
9/27):
– Slide the two inner annular tension springs
34.2 facing the breaker pole to a position
beside the other two outer annual tension
springs, thus releasing contact system 34.1,
and remove the contact system from contact
arm 34.
– The contact pin of the contact system and the
slot on the contact arm are to be cleaned and
greased.

17
7.5 Tests on withdrawable parts with VM1 type
circuit-breakers
The following conditions are to be checked to test
the function of the withdrawable part.
7.5.1 Motor-driven withdrawable parts
(non-standard)
Inspection of motor-driven withdrawable parts
should be performed as for manually operated
withdrawable parts in accordance with Section
7.5.2:
• Turn off the supply voltage (m.c.b.), since the
motor could otherwise be braked electrically.
• Turn hand crank 38 in the required direction
(see Figure 9/23).
Note:
When the withdrawable part moves, the motor
turns. The motor functions in such a case like a
generator, i.e. it can lead to reverse voltages in the
terminals.
7.5.2 Checking the auxiliary switch settings on
withdrawable parts
(Figures 9/12 and 9/23)
Compliance with the interlock conditions in the
test/disconnected and service position areas is
ensured by position signalling switches -S8 and
-S9 located in the withdrawable assembly and
factory-set.
In test operations, the withdrawable part must be
moved by hand with the crank fitted with the motor
power switched off.
1. Settings in the area of the test/disconnected
position:
• Move the withdrawable part out of the test/
disconnected position towards the service
position with a few turns of the crank.
• Slowly move the withdrawable part back to
the stop.
Auxiliary switch -S8 must then switch over
just before the stop is reached.
• Slowly insert the withdrawable part from the
test/disconnected position towards the
service position until auxiliary switch -S8 just
operates (approx. 30°rotation of the crank).
It is no longer possible to switch the circuit-
breaker on in this position.
When the hand crank is turned further, the
position of the circuit-breaker is polled by pawl
35.5 after a total angle of turn of approx. 90°. If
the circuit-breaker is closed, the withdrawable
part cannot be moved any further.
• For this test, the function of the blocking
magnet -Y0 (if fitted) must be disabled
manually.
2. Settings in the area of the service position:
• Move the withdrawable part out of the limit
position towards the test/disconnected
position with a few turns of the crank.
• Slowly move the withdrawable part forwards
again to the stop:
Auxiliary switch -S9 must then switch over
just before the stop is reached.
• Slowly move the withdrawable part out of
the service position towards the test/
disconnected position until auxiliary switch
-S9 just responds (approx. 30°rotation of the
crank).
When the hand crank is turned further, the
position of the circuit-breaker is polled by pawl
35.5 after a total angle of turn of approx. 90°. If
the circuit-breaker is closed, the withdrawable
part cannot be moved any further.
7.5.3 Checking the direction of rotation of the travel
motors on motor-driven withdrawable parts
• Move the withdrawable part by hand into a
central position between the test/disconnected
position and the service position.
• Remove the hand crank.
• Switch the supply voltage for the travel motor on.
• Use the local electrical controls to check that the
withdrawable part moves in the correct
direction.
Caution:
Do not allow the withdrawable part to run up
against a block when the travel direction is
incorrect! Switch the motor power off immediately
(the travel process functions electrically by a seal-in
system with limit position switch-off).
There may be a danger of injury when the door is
open!
7.5.4 Checking of interlock conditions
(Figures 9/19 and 9/23)
1. The withdrawable part must only be movable
from the test/disconnected position into the
service position when the circuit-breaker is open .
Check this condition as follows:
• With the circuit-breaker closed, insertion of
the withdrawable part towards the service
position must be blocked after only half a turn
of the crank in the clockwise direction, and the
travel motor on motor-operated withdrawable
parts must not be capable of being switched
on.
Do not use force – max. torque 25 Nm!

18
2. The withdrawable part must only be movable
from the service position into the test/
disconnected position with the circuit-breaker
open.
Check this condition as follows:
• With the circuit-breaker closed, withdrawal
movement of the withdrawable part must be
blocked after only half a turn of the crank in
the anti-clockwise direction, and the travel
motor on motor-operated withdrawable parts
must not be capable of being switched on.
3. Closing of the circuit-breaker must only be
possible when the withdrawable part is in the
defined test/disconnected position or service
position.
The control wiring plug 36.1 must previously
have been inserted.
Check this condition as follows:
• It must not be possible to close the circuit-
breaker with the withdrawable part in any
position between the test/disconnected
position and the service position.
• Readiness for switching is established
electrically when the service position is
reached by auxiliary switch -S9 in the
withdrawable assembly switching over.
• For motion into the test/disconnected
position, the same enabling conditions apply
analogously, in this case by means of auxiliary
switch -S8 in the withdrawable assembly.
4. After failure of the power supply, the circuit-
breaker may only be operated manually in the
service position or in the test/disconnected
position:
a) Initially by pressing the OFF push-button 4, for
– up to 60 seconds for breaking currents up
to 25 kA.
– up to 120 seconds for breaking currents up
to 31.5 kA.
b) Manual emergency off switching using
operating lever 28 is possible beyond these
times.
5. Withdrawable parts with order-related blocking
magnet -Y0 may not be moved in case of control
power failure, or when there is no control power.
Do not forcibly move blocked withdrawable
parts! The blocking magnet -Y0 is only present
on manually operated withdrawable parts (Figure
9/30).
Releasing the blocking magnet -Y0:
• Remove front plate 1.1,
• Disengage blocking magnet -Y0 by pulling the
magnet armature,
• While doing so, turn crank 38 about one half
turn (either direction of rotation is permissible).
The blocking magnet is only active in the test
position and service position. In intermediate
positions it has no effect.
7.6 Spare parts, auxiliary materials, lubricants
7.6.1 Spare parts
When parts are required, the serial number of the
relevant withdrawable breaker part or circuit-
breaker should always be quoted. Setting
instructions are to be requested separately.
Withdrawable assembly of VM1:
• Manually movable withdrawable assembly :
See Drawing GCE 7003570, Sheets 1 and 2, for
notes for setting of auxiliary switches -S8/-S9
and slide blocker.
• Motor-driven withdrawable parts:
For notes on settings see drawing
GCE 7003571
• Blocking magnet -Y0:
For notes on settings see drawing
GCE 7003820, sheet 1 (table 2)

19
Table: VM1 withdrawable part
Designation Item Rated supply Part no.
no. voltage (order code)
Auxiliary switch for manually operated
mechanism -S8/-S9
• contacts silver plated GCE7004024R0101
• contacts gold plated GCE7004024R0103
Auxiliary switches for motor-operated
driving mechanism -S8/-S9
• contacts silver plated GCE7004024R0102
• contacts gold plated GCE7004024R0104
Blocking magnet -Y0 24 V GCE7003820R0101
30 V GCE7003820R0102
48 V GCE7003820R0103
60 V GCE7003820R0104
110 V GCE7003820R0105
125 V GCE7003820R0107
220 V GCE7003820R0106
Motor with gearbox -M1 24 V GCE0940150P0111
30 V GCE0940150P0112
48 V GCE0940150P0113
60 V GCE0940150P0114
110 V ... 125 kV kVGCE09400P0115
220 V GCE0940150P0116
Table: VM1 type circuit-breaker
7.6.2 Auxiliary materials and lubricants
Designation Part no.
(order code)
Lubricant:
• Isoflex Topas NB 52 GCE0007249P0100
Halogen-free
cleansers:
• Rivolta BWR 210 GCE0007707P0100
(for general cleaning)
ABB Instruction manual
BA 1002/E GCEA901002P0102
• Cold cleanser 716 GCE0007706P0100
(for use with conductive components,
components of insulating materials
and in case of serious grime!)
ABB Instruction manual
BA 1006/E GCEA901006P0102
Paint:
• Touch-up paint:
Standard colour RAL 7035
- 1 kg-box GCE9014060R0103
- Spray tin GCE0007895P0100
Designation Item Part no.
no. (order code)
Auxiliary switch for ON/OFF -S3/-S5
position signalization
• Silver-plated contacts GCE7002397R0119
• Gold-plated contacts GCE7002397R0125
Designation Rated supply voltage Part no.
(order code) up to 40 kA 50 kA
Breaker controller • 24 V ... 48 V AC
Power pack A • 24 V ... 60 V DC
- Standardversion GCE7004902 R0110 R0114
- Fullversion GCE7004902 R0112 R0116
Breaker controller • 100 V ... 240 V AC
Power pack B • 110 V ... 240 V DC
- Standardversion GCE7004902 R0111 R0115
- Fullversion GCE7004902 R0113 R0117

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8Application of the X-ray regulations
One of the physical properties of vacuum insulation
is the possibility of X-ray emissions when the con-
tact gap is open. The specified test performed by
the Physikalisch-Technische Bundesanstalt (PTB)
in Braunschweig demonstrates that the local dos-
age output of 1 µSv/h at a distance of 10 cm from
the touchable surface is not exceeded when the
rated voltage is applied.
The results are as follows:
• Testing of the switching device or the vacuum
interrupter to VDE 0671 part 100 or IEC 62271-
100 at the relevant rated power frequency
withstand voltage may only be performed by
trained personnel observing the stipulations of the
EU basic standard (Stipulation 96/29/Euratom
of the senate from 13 May 1996 (ABI.L 159 from
29 June 1996)).
• Application of the rated power frequency with-
stand voltage specified for the switching device
by VDE 0671 part 100 or IEC 62271-100 is
completely safe.
• Higher voltages than the rated power frequency
withstand voltage or DC test voltage specified in
VDE or IEC standards must not be applied!
• The containment of the above mentioned local
dosage output with the vacuum interrupter in the
open position is dependent on maintenance of
the specified distance between the contacts
(which is automatically ensured with correct
mechanism function and force transmission).
• Safety clearances must be maintained.

21
9Figures
Figure 9/2: Vacuum circuit-breaker, type VM1, for fixed installation,
12 kV, ≤1250 A, ≤31.5 kA,
pole side.
Figure 9/1: Vacuum circuit-breaker, type VM1, for fixed installation,
12 kV, ≤1250 A, ≤31.5 kA,
mechanism side.
Figure 9/3: Vacuum circuit-breaker, type VM1, high-current,
for fixed installation, 12 kV, 1600...2000 A, ≤40 kA,
mechanism side.
Figure 9/4: Vacuum circuit-breaker, type VM1, high-current,
for fixed installation, 12 kV, 1600...2000 A, ≤40 kA,
pole side.