ABB Vmax User manual

Medium voltage products
Vmax
Medium voltage vacuum circuit-breaker
ANSI: ... 15 kV; ... 1200 A; ... 31.5 kA
For your safety! 1
1. Foreword 2
1.1. Introdution 2
1.2. Environmental protection programme 2
1.3. Vacuum interrupter quenching principle 2
1.4. Information on this booklet 3
1.5. Drawout 3
1.6. Standard fixed 3
1.7. Application of the X-ray emission Standards 3
2. Introduction and safe practices 4
2.1. Introduction 4
2.2. Safe practices 4
2.3. Standard and regulations 5
3. Reveiving, handling, and storage 6
3.1. Receiving 6
3.2. Handling 7
3.3. Storage 8
4. Description 9
4.1. General 9
4.2. Reference Standards 9
4.3. Fixed circuit-breaker 9
4.4. Characteristics of the electrical accessories 13
4.5. Preliminary operations 14
4.6. Putting into service 18
4.7. Standard fittings for circuit-breaker 27
5. Operation, installation and maintenance 28
5.1. Interlocks 28
5.2. Maintenance 30
5.3. Truck 35
6. Servicing 38
6.1. Interruption devices in general 38
6.2. Actuator and transmission system 38
6.3. Servicing details 38
6.4. Vacuum interrupters 38
7. Spare parts and accessories 39
7.1. List of spare parts 39
8. Overall dimensions 40
9. Electric circuit diagram 42
10. Product quality and environmental protection 48

1
For your safety!
• Make sure that the installation room (spaces, divisions
and ambient) is suitable for the electrical apparatus.
• Check that all the installation, putting into service and
maintenance operations are carried out by qualified
personnel with suitable knowledge of the apparatus.
• Make sure that the standard and legal prescriptions
are complied with during installation, putting into
service and maintenance, so that installations
according to the rules of good working practice and
safety in the work place are constructed.
• Strictly follow the information given in this instruction
manual.
• Check that the rated performance of the apparatus is
not exceeded during service.
• Check that the personnel operating the apparatus
have this instruction manual to hand as well as the
necessary information for correct intervention.
• Pay special attention to the notes indicated in the
manual by the following symbol:
RESPONSIBLE BEHAVIOUR SAFEGUARDS
YOUR OWN AND OTHERS’ SAFETY!
FOR ANY REQUESTS, PLEASE CONTACT THE
ABB ASSISTANCE SERVICE.

2
ALL THE INSTALLATION, PUTTING INTO
SERVICE, RUNNING AND MAINTENANCE
OPERATIONS MUST BE CARRIED OUT BY
SKILLED PERSONNEL WITH IN-DEPTH
KNOWLEDGE OF THE APPARATUS.
CAUTION
1.Foreword
1.1. Introdution
This publication contains the information needed to install
medium voltage Vmax/W and Vmax circuit-breakers and put
them into service.
For correct use of the product, please read it carefully.
Like all the apparatus we manufacture, the Vmax/W and
Vmax circuit-breakers are designed for different installation
configurations.
However, they do allow further technical and construction
modifications (at the customer’s request) to adapt to special
installation requirements.
For this reason, the information given below may sometimes
not contain instructions concerning special configurations.
Apart from this manual, it is therefore always necessary to
consult the latest technical documentation (circuit and wiring
diagrams, assembly and installation drawings, any protection
coordination studies, etc.), especially regarding any variants
requested in relation to the standardised configurations.
For example, the racking and interlock sections do not apply
to the fixed mount breaker styles. All information in this
booklet was current at the time of printing. Unless otherwise
noted, all references in this booklet are determined by viewing
the circuit-breaker from the front.
Only use original spare parts for maintenance operations.
For further information, please also see the technical
catalogue of the circuit-breaker.
1.2. Environmental protection
programme
The Vmax/W and Vmax circuit-breakers are manufactured
in accordance with the ISO 14000 Standards (Guidelines for
environmental management).
The production processes are carried out in compliance
with the Standards for environmental protection in terms of
reduction in energy consumption as well as in raw materials
and production of waste materials. All this is thanks to
the medium voltage apparatus manufacturing facility
environmental management system.
1.3. Vacuum interrupter quenching
principle
Due to the extremely low static interrupter chamber pressure
of 10-4 to 10-8 mbar, 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, high conductivity of the metal
vapour plasma, and short arcing time, the associated arc
energy is extremely low, which has advantageous effects
on the life of the contacts and thus on that of the vacuum
interrupters.

3
Style Frame width Voltage rating Continuous current
rating
Interruption ratings
(symmetrical RMS)
Configurations
available
Vmax/w 492 mm / 19.3 inches 15 kV 1200 A 25 - 31.5 kA Drawout
Vmax 416 mm / 16.3 inches 15 kV 1200 A 25 - 31.5 kA Standard fixed
1.5. Drawout
A Drawout circuit-breaker is a breaker that may be removed
from a cell without unbolting connections or mounting
supports. It is intended for use in ABB PowerCube modules.
It contains primary and secondary disconnects and provides
two operating positions: Disconnect and Connect.
1.6. Standard fixed
A fixed circuit-breaker is a breaker that is bolted in its
enclosure and wired to the load frame. A fixed circuit-
breaker can be mounted directly on supporting frames or
on a supporting truck to be provided by the customer. The
circuit-breaker, with supporting truck, must be suitably fixed
to the floor of its own compartment by the customer. The floor
surface in correspondence with the truck wheels must be
carefully levelled. A minimum degree of protection (IP2X) must
be guaranteed from the front towards live parts. The standard
fixed version of Vmax must be installed by the customer in a
minimal enclosure so as to guarantee a minimum degree of
protection as for C37.20.2 and C37.55 test requirements.
1.7. Application of the X-ray emission
Standards
One of the physical properties of vacuum insulation is the
possibility of X-ray emission when the interrupter contacts are
open.
The specific tests carried out at the PTB laboratories
(Physikalisch-Technische Bundesanstalt, in Brunswick -
Germany) show that local emission at a distance of 10 cm from
the interrupter or pole surface, does not exceed 1 mSv/h.
It follows that:
– at the rated service voltage the use of vacuum interrupters
is absolutely safe;
– application of the withstand voltage at industrial frequency,
according to the IEC 62271-100, VDE 0670 and IEEE
C37.04 Standards, is safe;
– application of a voltage higher than the withstand voltage
at industrial frequency or of a direct current test voltage
in direct current, specified in the IEC, VDE and ANSI/IEEE
Standards, cannot be used;
– limitation of the above-mentioned local phenomena, with
interrupters with open contacts, depends on keeping the
specified distance between the contacts.
This condition is intrinsically guaranteed by correct operation
of the operating mechanism and by adjustments of the
transmission system.
1.4. Information on this booklet
This booklet provides information for the Vmax/W and Vmax
circuit-breakers as described below. Not all sections of
the bulletin apply to all types of Vmax/W and Vmax circuit-
breakers. All information in this booklet was current at the
time of printing. Unless otherwise noted, all references in this
booklet are determined by viewing the circuit-breaker from the
front.

4
THE CIRCUIT-BREAKERS DESCRIBED IN
THIS BOOK ARE DESIGNED AND TESTED
TO OPERATE WITHIN THEIR NAMEPLATE
RATING. OPERATION OUTSIDE OF THESE
RATINGS MAY CAUSE EQUIPMENT TO
FAIL, RESULTING IN PROPERTY DAMAGE,
BODILY INJURY AND/OR DEATH.
ALL SAFETY CODES, SAFETY STANDARDS
AND/OR REGULATIONS AS THEY MAY BE
APPLIED TO THIS TYPE OF EQUIPMENT
MUST BE ADHERED TO STRICTLY.
WARNING
2.Introduction and safe practices
2.1. Introduction
The purpose of this manual is to provide instructions for
unpacking, storage, installation, operation, and maintenance
for Vmax/W and Vmax vacuum circuit-breakers. This
manual should be carefully read and used as a guide during
installation, initial operation, and maintenance.
The specific ratings of each model circuit-breaker are listed
on the individual nameplates. The Vmax/W and Vmax circuit-
breakers are protective devices. As such, they are maximum
rated devices. In no event should they be applied outside of
their nameplate ratings.
2.2. Safe practices
Vmax/W and Vmax circuit-breakers are equipped with high
energy / high speed mechanisms. The design includes several
interlocks and safety features which help ensure safe and
proper operating sequences. To ensure safety of personnel
associated with installation, operation, and maintenance of
these circuit-breakers, the following recommendations must
be followed.
Only qualified persons, as defined in the National Electric
Safety Code, who are familiar with the installation and
maintenance of medium voltage circuits and equipment
should be permitted to work on these circuit-breakers
Read these instructions carefully before attempting any
installation, operation, or maintenance of these power circuit-
breakers.
Do not work on an energized circuit-breaker.
Do not work on a circuit-breaker unless all components
are disconnected by means of a visible break and
securely grounded.
Do not work on a circuit-breaker with power supplied to
the secondary control circuit.
Do not defeat safety interlocks. This may result in bodily
injury, death and/or equipment damage.
Do not work on a closed circuit-breaker.
Do not work on a circuit-breaker with charged energy
(springs charged).
Do not use a circuit-breaker by itself as the sole means of
isolating a high voltage circuit.
Do not leave a circuit-breaker in an intermediate
position in a cell. Always place the circuit-breaker in the
disconnect or connect position.
FAILURE TO OBSERVE THE
REQUIREMENTS OF OSHA STANDARD
1910.269 CAN CAUSE DEATH OR SEVERE
BURNS AND DISFIGUREMENT. THAT
STANDARD SPECIFICALLY PROHIBITS
THE WEARING OF POLYESTER, ACETATE,
NYLON, OR RAYON CLOTHING BY
EMPLOYEES WORKING WITH EXPOSURE
TO ELECTRIC ARCS OR FLAMES.
NOTICE

5
2.3. Standard and regulations
2.3.1. Fabrication
The Vmax, Vmax/W circuit-breakers conform to the following
Standards:
– DIN VDE 0670, part 104, and IEC 62271-100
– DIN VDE 0847, part 4, and IEC 61000-4
– IEEE C37.04
2.3.2. Installation and operation
For assembly and operation, please refer to the relative
regulations, and in particular to:
– ANSI / NFPA70
– NEC
2.3.3. Service conditions
Normal service conditions
Follow the recommendations in the IEC 62271-1 and 62271-
100 Standards. In more detail:
IEEE C37.09
IEEE C37.54 – C37.20.2.
Ambient temperature
Maximum + 40 °C
Average maximum over 24 hours + 35 °C
Minimum for indoor installation - 30 °C
Humidity
The average value of the relative humidity, measured for a period longer
than 24 hours, must not exceed 95%
The average value of the pressure of the water vapour without
condensation, measured for a period longer than 24 hours, must not
exceed 2.2 kPa.
The average value of the relative humidity, measured for a period longer
than 1 month, must not exceed 90%.
The average value of the pressure of the water vapour, measured for a
period longer than 1 month, must not exceed 1.8 kPa.
Altitude
< 1000 (3300 ft.) m above sea level.
For application above 1000m (3300 ft.) C37.20.2 is applicable
Climate
To avoid the risk of corrosion or other damage in areas:
– with a high level of humidity, and/or
– with rapid and large temperature variations, take appropriate steps
(for example, by using suitable electric heaters) to prevent condensation
phenomena.
For special installation requirements or other operating
conditions, please contact ABB.

6
A
B
3
4
2
1
5
3. Reveiving, handling, and storage
Fig. 1
Caption
A Circuit-breaker rating plate.
B Operating mechanism rating plate.
1 Type of apparatus.
2 Symbols of compliance with Standards.
3 Serial number.
4 Circuit-breaker characteristics.
5 Characteristics of the operating mechanism auxiliaries.
Vmax/W and Vmax circuit-breakers are subject to complete
factory production tests and inspection prior to packaging
and shipment. The shipping package is designed to provide
reasonable protection during shipment and to provide
convenient handling. Accessories such as opening handles
and racking handles are shipped separately from the circuit-
breaker.
The circuit-breaker is shipped in special packing, in the open
position.
Each piece of apparatus is protected by a plastic cover
to prevent any infiltration of water during the loading and
unloading stages and to keep the dust off during storage.
3.1. Receiving
Immediately upon receipt of the circuit-breaker(s), examine
the carton(s) to determine if any damage or loss was
sustained during transit. If damage or indication of rough
handling is evident, file a damage claim at once with the
carrier and promptly notify the nearest district office. ABB
is not responsible for damage to goods which occur after
delivery. However, ABB will lend assistance if notified of
claims. Use care in unpacking the circuit-breaker to avoid
damaging any circuit-breaker parts.
Unpack circuit-breakers as soon as possible after receipt.
If unpacking is delayed, difficulty may be experienced in
making a claim for damages not evident upon receipt.
Check the contents of each carton against the packing list
before discarding any packing material. If any discrepancy
is discovered, promptly notify the nearest district office.
Information specifying the purchase order number, carton
number, and part numbers of damaged or missing parts
should accompany the claim.
On receipt, check the state of the apparatus, integrity of the
packing and correspondence with the nameplate data (see
fig. 1) with what is specified in the order confirmation and in
the accompanying shipping notes.
Also make sure that all the materials described in the shipping
notes are included in the supply.
Should any damage or irregularity be noted in the supply
on unpacking, notify ABB (directly or through the agent or
supplier) as soon as possible and in any case within five days
of receipt.
The apparatus is only supplied with the accessories specified
at the time of ordering and validated in the order confirmation
sent by ABB.
The accompanying documents inserted in the shipping
packing are:
– instruction manual (this document)
– test certification
– identification label
– copy of the shipping documents
– electric wiring diagram.
Other documents which are sent prior to shipment of the
apparatus are:
– order confirmation
– original shipping advice notes
– any drawings or documents referring to special
configurations/conditions.
BEFORE CARRYING OUT ANY OPERATION,
ALWAYS MAKE SURE THAT THE SPRINGS
ARE DISCHARGED AND THAT THE
APPARATUS IS IN THE OPEN POSITION.
CAUTION
CIRCUIT-BREAKER ANSI C37.04
Vmax/W 15.12.31
SN 1VC1 BA 000000XX PR. YEAR 2010
M MASS 84 kg
Ur VOLTAGE 15 kV
Up LIGHTNING IMPULSE WITHSTAND VOLTAGE 95 kV
fr FREQUENCY 60 Hz
Ir NORMAL CURRENT 1200 A
Ik SHORT TIME WITHSTAND CURRENT 31.5 kA
tk DURATION OF SHORT CIRCUIT 2 s
Ise SHORT CIRCUIT BREAKING CURRENT 31.5 kA
MAKING CAPACITY (PEAK VALUE) 82 kA
AT THE VOLTAGE OF 15 kV
D.C. COMPONENT < = 44 %
RATED CLOSING TIME 45 ... 80 ms
RATED INTERRUPTING TIME < = 50 ms
OPERATING SEQUENCE O-0,3S-CO-3MI N-CO
INSTRUCTION MANUAL 1VCD600929
E. lECTRICAL DIAGRAM 1VCD400054 (E1010) \~ I
FIG.01 FIG.02 FIG.07 FIG.OS FIG.33 ~ ~\,
llllllllIIlllllllIlllllllIllllllllllllllllllIlIlllllllIlllllllIllllllllll
EL1 OPERATING MECHANISM
-MC 125 V -MS 125 V
-M01 125 V -RL2 125 V
Made by ABB, Italy

7
3
1
2
Fig. 2
Fig. 2a
DO NOT pull the circuit-breaker by the front handles with the
circuit-breaker in any position other than full Disconnect to
avoid injuries at the hands.
DO NOT move the circuit-breaker by pushing on the pole
box or primary leads of the embedded poles. Damage and
misalignment of the poles and contact arms assemblies will
occur if force is applied to them.
3.2.Handling
Vmax/W and Vmax circuit-breaker shipping containers are
designed to be handled by fork lift (not supplied) Fig. 2.
To lift and handle the circuit-breaker, proceed as follows
(fig. 2):
– use a special lifting tool (1) (not supplied) fitted with ropes
with safety hooks (2);
– insert the hooks (2) in the special holes in the circuit-breaker
frame and lift;
– on completion of the operation (and in any case before
putting into service) unhook the lifting tool.
During handling, take great care not to stress the insulating
parts and the terminals of the circuit-breaker.
Once removed from the shipping container, the circuit-breaker
wheels are designed to move the circuit-breaker across a
smooth, paved surface.
Care must be taken not to damage the secondary plug
(item 3, Figure 2a) when transporting, rolling, or handling the
Vmax/W circuit-breakers.

8
3.3. Storage
When a period of storage is foreseen, our workshops can (on
request) provide suitable packing for the specified storage
conditions.
On receipt the apparatus must be carefully unpacked and
checked as described in Checking on receipt.
If immediate installation is not possible, the packing must be
replaced, using the original material supplied.
Insert special hygroscopic substances inside the packing,
using at least one standard packet per piece of apparatus.
Should the original packing not be available and immediate
installation is not possible, store in a covered, well-ventilated,
dry, dust-free, non-corrosive ambient, away from any
flammable materials and at a temperature between – 30 °C
and + 45 °C.
Circuit breakers should be installed in their permanent
location as soon as possible. If the circuit-breakers are not
placed in service for some time, it is advisable to provide
adequate means of environmental protection. This may be
done by keeping the circuit-breaker in its original shipping
container and storing it in a warm, dry, and uncontaminated
atmosphere. The circuit-breakers should be stored to
minimize condensation. Moisture can cause deterioration of
metal parts and high voltage insulation.
Prior to storage of the circuit-breaker, verification should
be made that it is free from shipping damage and is in
satisfactory operating condition.
THE SHIPPING CONTAINERS PROVIDED
ARE NOT DESIGNED FOR STACKING.
CAUTION

9
3
4
1
7
8
6
9
12
11
10
Fig. 3
Fig. 4
Fig. 5
Fig. 6
9
5
2
Caption
1 Lever for manual closing spring charging
2 Signalling device for circuit-breaker open/closed
3 Rating plate
4 Opening pushbutton
5 Closing pushbutton
6 Undervoltage release mechanical override (on request)
7 Signalling device for closing springs charged/discharged
8 Operation counter
9 Terminals
10 Earthing hole
11 Passage for the auxiliary circuit cord
12 Auxiliary contacts
4. Description
4.1. General
The Vmax series of circuit-breakers are pieces
of apparatus under vacuum for indoor installation;
for the electrical performances, please refer
to the corresponding technical catalogue code
1VCP000408. For special installation requirements,
please contact ABB.
The following versions are available:
– fixed
– withdrawable for ABB PowerCube modules.
4.2. Reference Standards
The Vmax circuit-breakers conform to the IEC 62271-100,
ANSI C37.04 – C37.54 – C37.09 – C37.55 Standards and
those of major industrialized countries.
4.3. Fixed circuit-breaker
The fixed circuit-breaker (fig. 3-4) is the basic version
complete with structure and front protection screen. The fixing
holes are made in the lower part of the structure.
For the electrical connections of the circuit-breaker auxiliary
circuits, the proper terminal box is available.
The earthing hole is placed in the rear part of the circuit-
breaker.

10
4.3.1. General characteristics of
fixed circuit-breakers Vmax
D
H
W
II
Standard fittings for fixed circuit-breakers
The basic versions of the fixed circuit-breakers are three-pole
and fitted with:
– EL type manual operating mechanism
– mechanical signalling device for closing springs charged/
discharged
– mechanical signalling device for circuit-breaker open/closed
– closing pushbutton
– opening pushbutton
– operation counter
– set of ten circuit-breaker open/closed auxiliary contacts
Note: application of the shunt opening release and/or
additional shunt opening release foresees the use of one
or two auxiliary make contacts (normally open), thereby
reducing the number of auxiliary contacts available.
– lever for manual closing spring charging
– auxiliary circuit support terminal board
Circuit-breaker Vmax 15
Fixed version •
Standards
IEC 62271-100 •
CEI EN62271-100 (file 7642) •
C37.54 - C37.09 - C37.04 - C37.55 •
UL Recognized Component Mark •
Rated voltage Ur [kV] 15
Rated insulation voltage Us [kV] 15
Withstand voltage at 50 Hz Ud (1 min) [kV] 36 (at 60 Hz)
Impulse withstand voltage Up [kV] 95
Rated frequency fr [Hz] 60
Rated normal current (40 °C) Ir [A] 1200
Rated breaking capacity
(rated symmetrical short-circuit current) Isc [kA] 25 (3 cycles)
31.5 (3 cycles)
Rated-short time withstand current (2s) Ik [kA] 25
31.5
Making capacity Ip [kA] 65
82
Operation sequence [O - 0.3” - CO - 15” - CO] –
[O - 0.3” - CO - 3’ - CO] •
Opening time [ms] 27 ... 32.5
Arc duration [ms] 10 ... 17.5
Total interruption time [ms] <50
Closing time [ms] 45 ... 80
Maximum
overall dimensions
H [mm/in] 534/21.02
W [mm/in] 416/16.38
D [mm/in] 456/17.95
Pole centre I [mm/in] 133/5.24
Weight [kg/lb] 77/169.40
Standardized table of dimensions 1VCD003279
Operating temperature [°C] -30 ... +40
Tropicalization IEC: 60068-2-30, 60721-2-1 –
Electromagnetic compatibility IEC 62271-1 –

11
16
4
5
17
9
1
2
3
6
7
12
10
14
13
15
11
8
8
18
Caption
1 Lever for manually charging the closing springs
2 Signalling device for circuit-breaker open/closed
3 Rating plate
4 Opening pushbutton
5 Closing pushbutton
6 Signalling device for closing springs charged/discharged
7 Operation counter
8 Isolating contacts
Fig. 7
9 Slide for operating the switchgear shutters
10 Truck
11 Tab for hooking into the fixed part
12 Undervoltage release mechanical override (on request)
13 Strikers for activating the contacts placed in the enclosure
14 Connector (plug)
15 Cabling connection
16 Operating lever of circuit-breaker racking-in/out.
17 Handles for activating the locks (11)
18 Truck locator channel
4.3.2. Withdrawable circuit-breaker
The withdrawable circuit-breakers (see fig. 7) are available for
ABB PowerCube modules.
They consist of a truck on which the supporting structure of
the circuit-breaker is fixed.
The cord with the connector (14) (plug) for connection of the
operating mechanism electrical accessories comes out of the
connection (15).
The strikers for operating the contacts (racked-in/isolated)
placed in the switchgear are fixed in the top part of the
circuit-breaker.
The slides (9) for operating the segregation shutters of
the medium voltage contacts of the enclosure or of the
switchgear are fixed on the sides of the circuit-breaker.
On the front part of the circuit-breaker truck, the crosspiece
is mounted with the handles (17) for hooking up the circuit-
breaker for the racking-in/out operations by means of the
special operating lever (16). The circuit-breaker is completed
with the isolating contacts (8).
The withdrawable circuit-breaker is fitted with special locks
on the front crosspiece, which allow hooking up into the
corresponding couplings of the switchgear.
The locks can only be activated by the handles with the truck
fully resting against the crosspiece.
The operating lever (16) must be fully inserted (also see par.
4.6.6. - 4.6.7.). A lock prevents the truck from advancing into
the enclosure or fixed part when the earthing switch is closed.
Another lock prevents racking-in and racking-out with the
circuit-breaker closed. With the truck in an intermediate
position between isolated and racked-in, a further lock
prevents circuit-breaker closing (either mechanical or
electrical).
A locking magnet is also mounted, on request, on the truck
which, when de-energised, prevents the truck racking-in
operation.
On request, an interlock is also available which prevents
circuit-breaker racking-in with the door open, and door
opening with the circuit-breaker closed.

12
4.3.3. General characteristics
of withdrawable circuit-breakers (15 kV)
for PowerCube PB1 modules 600 mm wide
Circuit-breaker Vmax/W 15
Use in switchgear/enclosure PowerCube
Standards
IEC 62271-100 •
CEI EN62271-100 (file 7642) •
C37.54 - C37.09 - C37.04 - C37.55 •
UL Listed (on request)
Rated voltage Ur [kV] 15
Rated insulation voltage Us [kV] 15
Withstand voltage at 50 Hz Ud (1 min) [kV] 36 (at 60 Hz)
Impulse withstand voltage Up [kV] 95
Rated frequency fr [Hz] 60
Rated normal current (40°C) Ir [A] 1200
Rated breaking capacity
(rated symmetrical short-circuit current) Isc [kA] 25 (3 cycles)
31.5 (3 cycles)
Rated-short time withstand current (2s) Ik [kA] 25
31.5
Making capacity Ip [kA] 65
82
Operation sequence [O - 0.3" - CO - 15" - CO] –
[O - 0.3" - CO - 3' - CO] •
Opening time [ms] 27 ... 32.5
Arc duration [ms] 10 ... 17.5
Total interruption time [ms] <50
Closing time [ms] 45 ... 80
Maximum
overall dimensions
H [mm/in] 665/26.18
W [mm/in] 503/19.80
D [mm/in] 662/26.06
Pole centre I [mm/in] 150/5.91
Weight [kg/lb] 98/215.60
Standardized table of dimensions 1VCD003280
Operating temperature [°C] -30 ... +40
Tropicalization IEC: 60068-2-30, 60721-2-1 –
Electromagnetic compatibility IEC 62271-1 –
Standard fittings for withdrawable circuit-breakers for
PowerCube PB1 modules 600 mm wide
The basic versions of the withdrawable circuit-breakers
are three-pole and fitted with:
– EL type manual operating mechanism
– Mechanical signaling device for closing springs charged/
discharged
– Mechanical signaling device for circuit-breaker open/closed
– Closing and opening pushbutton
– Operation counter
– Set of ten auxiliary circuit-breaker open/closed contacts
– Lever for manually charging the closing springs
– Isolating contacts
D
H
W
II

13
– Cord with connector (plug only) for auxiliary circuits, with
striker pin on request, which does not allow connection
of the plug in the socket if the rated current of the circuit-
breaker is different from the rated current of the panel
– Racking-in/out lever (the quantity must be defined
according to the number of pieces of apparatus ordered)
– Locking electromagnet in the truck. On request. This
prevents racking-in of the circuit-breaker in the panel with
auxiliary circuits not connected (plug not inserted in the
socket).
4.4. Characteristics of the electrical accessories
Shunt opening release (-MO1)
Additional shunt opening release (-MO2)
Shunt closing release (-MC)
Undervoltage release (-MU)
Locking magnet on the operating mechanism (-RL1)
Un 24 - 30 - 48 - 60 V
DC-AC (50-60 Hz)
110 - 132 - 220 - 250 V
DC-AC (50-60 Hz)
Operating
limits
-MO1-MO2-MC 65 … 120 % Un
-MU 35 … 85 % Un
-RL1 85 … 110 % Un
Opening
time
-MO1-MO2 27...32.5 ms
-MC 45...80 ms
-MU 60...60 ms
Power on inrush (Ps) < 150 W
Inrush duration 150 ms
Continuous power (Pc) 3 W
Insulation voltage 2000 V 50/60 Hz (for 1 min)
Electronic time delay device for undervoltage release
(mounted outside the circuit-breaker)
Un: 24 ... 30 - 48 - 60 - 110 ... 127 - 220 ... 250 V–
Un: 48 - 60 - 110 ... 127 - 220 ... 240 V~ 50/60 Hz
Adjustable opening time
(release + time delay device): 0.5-1-1.5-2-3 s
Auxiliary contacts of the circuit-breaker (-BB1; -BB2; -BB3)
General characteristics
Insulation voltage according
to VDE 0110 standard. Group C
660 V AC
800 V DC
Rated voltage 24 V ... 660 V
Test voltage 2.2 kV
Rated overcurrent 10 A
Number of contacts 5
Contact run 6 mm ... 7 mm
Activation force 26 N
Resistance 3 mΩ
Storage temperature –20 °C ... +120 °C
Operating temperature –20 °C ... +70 °C
Contact overtemperature 20 K
Number of cycles 30,000
Unlimited breaking capacity if used with 10 A fuse in series
Note: Application of the shunt opening release and/or additional shunt opening
release foresees the use of one or two auxiliary make contacts (normally open),
thereby reducing the number of auxiliary contacts available.
Electrical characteristics
Un Rated current Breaking capacity
220 V AC Cosϕ = 0,7 2.5 A 25 A
380 V AC Cosϕ = 0,7 1.5 A 15 A
500 V AC Cosϕ = 0,7 1.5 A 15 A
660 V AC Cosϕ = 0,7 1.2 A 12 A
Time constant
24 V DC
1 ms 10 A 12 A
15 ms 10 A 12 A
50 ms 8 A 10 A
200 ms 6 A 7.7 A
60 V DC
1 ms 8 A 10 A
15 ms 6 A 8 A
50 ms 5 A 6 A
200 ms 4 A 5.4 A
110 V DC
1 ms 6 A 8 A
15 ms 4 A 5 A
50 ms 2 A 4.6 A
200 ms 1 A 2.2 A
220 V DC
1 ms 1.5 A 2 A
15 ms 1 A 1.4 A
50 ms 0.75 A 1.2 A
200 ms 0.5 A 1 A
Motor operator (-MS)
Un: 24 ... 30 - 48 ... 60 - 110 ... 130 - 220 ... 250 V–
Un: 100 ... 130 - 220 ... 250 V~ 50/60 Hz
Operating limits: 85 … 110 % Un
Inrush power (Ps): DC 600 W; AC = 600 VA
Rated power (Pn): DC = 200 W; AC = 200 VA
Inrush time 0,2 s
Charging time: 6-7 s
Insulation voltage: 2000 V 50 Hz (for 1 min)
Locking magnet on the truck (-RL2)
Un: 24 - 30 - 48 - 60 - 110 - 125 - 127 - 132 - 220 - 240 V–
Un: 24 - 30 - 48 - 60 - 110 - 125 - 127 - 220 -
230 ... 240 V~ 50/60 Hz
Operating limits: 85 … 110% Un
Inrush power (Ps): DC 250 W; AC = 250 VA
Continuous power (Pc): DC = 5 W; AC = 5 VA
Inrush time: 150 ms

14
4.5. Preliminary operations
Clean the insulating parts with clean dry cloths.
Check that the top and bottom terminals are clean and free of
any deformation caused by shocks received during transport
or storage.
4.5.1. Installation of fixed circuit-breakers
Vmax circuit-breaker can be fixed directly on the supporting
plate or on a truck provided by the customer. The customer
must guarantee a minimum degree of protection (IP2X) from
the front towards live parts.The fixed version of Vmax circuit-
breaker must be installed by the customer so as to guarantee
a minimum degree of protection as for C37.20.2 and C37.55
test requirements.
4.5.2. Insertion and removal withdrawable circuit-breaker
This section describes the process for inserting the breaker
into the disconnect position of the switchgear and the
removal of the circuit-breaker from the disconnect position.
Racking of the circuit-breaker to and from the test and
disconnect position is covered in the following section.
Insertion (Refer to Fig. 7 and 13)
(From Withdrawn Position to Disconnect Position)
1. Align breaker and ramp, dolly or lift truck with circuit-
breaker compartment
2. Pull handles (17) to center (this withdraws Cell Interlock
Tabs (11) allowing breaker to be inserted)
3. Push breaker into breaker compartment with handles.
4. Align Cell Interlock Tabs with Circuit Breaker Compartment
Slots (A)
5. Push Handles out to fully engage Cell Interlock Tabs into
Circuit Breaker Compartment Slots
6. Visually check that Cell Interlock Tabs are engaged in
Circuit-Breaker Compartment Slots (if Cell Interlock Tabs
are not fully extended, racking is prevented) Breaker is now
in the Disconnect Position
Removal (Refer to Fig. 7 and 14)
(From Disconnect Position to Withdrawn Position)
1. Visually check to see the Truck (11) is against the Locator
Channel
2. Pull Handles to center (this withdraws Cell Interlock Tabs;
allowing breaker to be removed .
4. Pull the breaker from Circuit-Breaker Compartment with the
Handles onto the required transportation device.
4.5.3. Withdrawable circuit-breakers with truck
made by third parties
The Vmax circuit-breakers installed on trucks made by the
customer must be fitted with one or two additional auxiliary
contacts (operated by the mechanical lock and by the circuit-
breaker release device) which are entrusted with the function
of interrupting the shunt closing release circuit (-MC).
In this way it is certain that no electrical impulse can activate
the shunt closing release with the circuit-breaker in an
intermediate position.
The customer must also provide a lock to prevent circuit-
breaker traverse when it is in the closed position.
4.5.4. Installation of withdrawable circuit-breakers
in ABB PowerCube modules
The withdrawable circuit-breakers are use in PowerCube
modules see Fig. 13 - 14.
For racking-in/racking-out of the switchgear: connect the
secondary plug (14) (fig. 7) with secondary disconnector
(B) (fig.14) , fully insert the crank handle (1) (fig. 11 in the
appropriate seat) (2) (fig.11) and work it clockwise for racking-
in, and anti-clockwise for racking-out, until the end-of-run
positions are reached.
Circuit-breaker racking- in/-out must be carried out gradually
to avoid shocks which may deform the mechanical interlocks
and the end-of-runs.
The torque normally required to carry out racking- in and
racking-out is <25 Nm.
This value must not be exceeded. If operations are prevented
or difficult, do not force them and check that the operating
sequence is correct.
Note
To complete the racking-in/out operation, 20 turns of the
crank handle are required.
When the circuit-breaker has reached the connect/
disconnect position it can be considered as racked into the
switchgear and, at the same time, earthed by means of the
truck wheels.
THE RACKING-IN/-OUT OPERATIONS
MUST ALWAYS BE CARRIED OUT WITH
THE CIRCUIT-BREAKER OPEN.

15
2
1
1
4.5.5. Connection of the auxiliary circuits
Note: the minimum cross-section of the wires used for the
auxiliary circuits must not be less than the one used for the
internal cabling AWG16. Furthermore, they must be insulated
for 3 kV test.
Please note that auxiliary circuits must be energized with 2 kV
(maximum test voltage) as per standards indications.
Connection of the auxiliary circuit
for Vmax Fixed circuit-breaker
Connection of the circuit-breaker auxiliary circuits must be
made by means of the proper terminal box mounted inside
the circuit-breaker and the wires must pass through the
connector (1) (Fig. 8). Outside the connector, the cables must
pass through a suitable metal protective covering (pipe, wiring
duct, etc.) and be earthed.
To prevent the cabling wires outside the circuit-breaker
(provided by the customer) from accidentally coming into
contact with moving partsand therefore damaging the
insulation, the wires should be positioned and fixed as shown
in the figure 8.
Before removing the operating mechanism cover (1)
(Fig. 9) to access the terminal box, check that the circuit-
breaker is open and the closing springs discharged.
Fig. 8
4.5.6. Withdrawable circuit-breakers
The auxiliary circuits of withdrawable circuit-breakers are fully
cabled in the factory as far as the connector (2 - fig. 9).
For the external connections, refer to the electric wiring
diagram of the switchgear.
Fig. 9

16
4.5.7. Power circuit connections
of fixed circuit-breakers Vmax
– General recommendations
– Select the cross-section of the conductors according to
the service current and the short circuit current of the
installation.
– Prepare special supporting insulators, near the terminals of
the fixed circuit-breaker or of the enclosure, sized according
to the electrodynamics forces deriving from the short-circuit
current of the installation.
Assembly of the connections
– Check that the contact surfaces of the connections are flat,
and are free of any burrs, traces of oxidation or deformation
caused by drilling or impacts received.
– According to the conductor material and the surface
treatment used, carry out the operations indicated in table
T1 on the contact surface of the conductor.
– Assembly procedure
– Put the connections in contact with the circuit-breaker
terminals taking care to avoid mechanical stresses (traction
/ compression) on, for example, the conducting busbars on
the terminals.
– Interpose a spring washer and a flat washer between the
head of the bolt and the connection.
– It is advisable to use bolts according to DIN class 8.8
Standards, also referring to what is indicated in table T2.
– In the case of cable connections, strictly follow the
manufacturer’s instructions to make the terminals.
Earthing
For the fixed version circuit-breaker, carry out earthing by
means of the special screws marked with the relative symbol
(see fig. 10).
Clean and degrease the area around the screw to a diameter
of about 30 mm and, on completion of assembly, cover the
joint again with Vaseline grease.
Use a conductor (busbar or cord) with a cross section
conforming to the Standards in force.
Assembly procedure
– Put the connections in contact with the circuit-breaker
terminals taking care to avoid mechanical stresses (traction
/ compression) on, for example, the conducting busbars on
the terminals.
Bare copper
– Clean with a fine file or emery cloth.
– Tighten fully and cover the contact surfaces with
5RX Moly type grease.
Copper or silver-plated aluminium
– Clean with a rough dry cloth.
– Only in the case of obstinate traces of oxidation,
clean with a very fine grain emery cloth taking
care not to remove the surface layer.
– If necessary, restore the surface treatment.
Bare aluminium
– Clean with a metal brush or emery cloth.
– Cover the contact surfaces again immediately
with neutral grease.
– Insert the copper-aluminium bimetal with
surfaces shined (copper side in contact with
the terminal; aluminium side in contact with the
connection) between the aluminium connection
and the copper terminal.
T2
Bolt Recommended tightening torque (1)
Without lubricant With lubricant (2)
M6 10.5 Nm 4.5 Nm
M8 26 Nm 10 Nm
(1) The nominal tightening torque is based on a friction coefficient of the thread of 0.14 (distributed
value the thread is subjected to which, in some cases, is not negligible).
The nominal tightening torque with lubricant is according to the DIN 43673 Standards.
(2) Oil or grease. The thread and contact surfaces of the lubricated heads.
Take into account the deviations from the general Standards table (for example, for contact systems
or terminals) as foreseen in the specific technical documentation.
The thread and contact surfaces of the heads of bolts must be slightly oiled or greased, so as to
obtain correct nominal tightening torque.
T1

17
1
5
6
11
2
39
8
Undervoltage release mechanical
override (on request)
Override activated
Undervoltage release disabled.
The circuit-breaker can be closed
even if the undervoltage release
is not supplied.
Override disabled
Undervoltage release activated.
The circuit-breaker can only be
closed if the undervoltage release
is supplied with power.
4
7
10
-
-
-
-
4.5.8. Operating and signalling parts
Fig. 10
Caption
1 Key lock (if provided) (*)
2 Lever for manually charging the closing springs
3 Coupling lever for racking-out operation (only for withdrawable circuit-breakers)
4 Opening pushbutton
5 Closing pushbutton
6 Signalling device for circuit-breaker open/closed
7 Signalling device for closing springs charged/discharged
8 Operation counter
9 Handles for operating the truck locks (only for withdrawable circuit-breakers)
10 Operating lever for circuit-breaker racking-in/out
11 Undervoltage release mechanical override (on request).
(*) Warning! To activate the key lock: open the circuit-breaker, keep the opening pushbutton
depressed, then turn the key and remove it from the housing.

18
4.6. Putting into service
4.6.1. General procedures
ALL THE OPERATIONS REGARDING PUTTING
INTO SERVICE MUST BE CARRIED OUT
BY ABB PERSONNEL OR BY SUITABLY
QUALIFIED CUSTOMER PERSONNEL WITH
IN DEPTH KNOWLEDGE OF THE APPARATUS
AND OF THE INSTALLATION. SHOULD THE
OPERATIONS BE PREVENTED, DO NOT
FORCE THE MECHANICAL INTERLOCKS AND
CHECK THAT THE OPERATING SEQUENCE
IS CORRECT. THE OPERATING FORCES
WHICH CAN BE APPLIED FOR RACKING-IN
WITHDRAWABLE CIRCUIT-BREAKERS ARE
INDICATED IN PARAGRAPH “INSTALLATION
OF WITHDRAWABLE CIRCUIT-BREAKERS”.
CAUTION
– check tightness of the power connections at the circuit-
breaker terminals;
– check that the value of the power supply voltage of the
auxiliary circuits is within limits stated by IEEE C37.06;
– remount any covers removed during the testing operations;
– check that no foreign bodies, such as bits of packing, have
got into the moving parts;
– check that there is a sufficient exchange of air in the
installation place to avoid over temperatures;
– supply the auxiliary circuits with power;
– check the functionality and efficiency of the mechanical and
electrical locks;
– carry out a few circuit-breaker opening and closing
operations by means of the pushbuttons on the front of the
circuit-breaker;
– also carry out the checks indicated in table T3;
– do not attempt to insert the circuit-breaker into any
compartment prior to inspection;
– compare the circuit-breaker name plate rating with the
switchgear rating;
– do not attempt to insert a closed circuit-breaker;
– always inspect the circuit-breaker compartment to insure
that it is free of obstructions, tools, or other equipment.
T3
Item inspected Procedure Positive check
1Insulation resistance. Medium voltage circuit
With a 2500 V megger, measure the insulation resistance
between the phases and the exposed conductive part of the
circuit.
The insulation resistance should be at least 50
Mohm and in any case constant over time.
Auxiliary circuits
With a 500 V megger (if the apparatus installed allows this),
measure the insulation resistance between the auxiliary circuits
and the exposed conductive part.
The insulation resistance should be a few Mohm and
in any case constant over time.
2Auxiliary circuits. Check that the connections to the control circuit are correct:
proceed at the relative power supply.
Operations and signals are normal.
3Manual operating mechanism. Carry out a few closing and opening operations (see cap. 6).
N.B. Supply the undervoltage release and the locking magnet
on the operating mechanism at the relative rated voltage (if
provided).
The operations and the relative signals take
place normally.
4Motor operator
(if provided).
Supply the spring charging geared motor at the relative rated
voltage.
The springs are charged normally.
The signals are normal.
With the springs charged, the geared motor
stops.
Carry out a few closing and opening operations.
N.B. Supply the undervoltage release and the locking magnet
on the operating mechanism at the relative rated voltage (if
provided).
The geared motor recharges the springs after
each closing operation.
5Undervoltage release
(if provided).
Supply the undervoltage release at the relative rated voltage and
carry out the circuit-breaker closing operation.
The circuit-breaker closes normally.
The signals are normal.
Cut off power to the release. The circuit-breaker opens.
The signalling changes over.
6Shunt opening release and
additional shunt opening release
(if provided).
Close the circuit-breaker and supply the shunt opening release
at the relative rated voltage.
The circuit-breaker opens normally.
The signals are normal.
7Shunt closing release
(if provided).
Open the circuit-breaker and supply the shunt closing release at
the relative rated voltage.
The circuit-breaker closes normally.
The signals are normal.