Abb breaker

1. 1VCP000238 – Rev. C, en – Presentation – 2010.01
© ABB Group
August 17, 2022 | Slide 1
VM1: innovation in power technology
Vacuum circuit-breaker with magnetic
actuator
Product presentation
October, 2009

2. VM1
Vacuum circuit-breaker with magnetic actuator
Die Summe von Vorteilen
 Keine Wartung
 Wenige Einzelteile
 Einfache mechanische Abläufe
 Sehr hohe Zuverlässigkeit
 Hoher Qualitätsstandard
 Sehr hohe Lebensdauer
Main Characteristics
• Maintenance-free
• Extremely high number of operating cycles
• Electronic controller with sensor technology
• Vacuum interrupters embedded in epoxy resin
• High quality standard
• Compatible with conventional circuit-breakers
• For universal applications worldwide

3. VM1
VM1
Rated voltage kV 12 17.5 24
Rated current A ...2500 ...2500 ...2500
Rated short-circuit kA ...31.5 ...31.5 ...25
breaking current

4. VM1
Emergency manual breaking
mechanism
Electronic controller
Magnetic actuator
Capacitor
Inductive sensors for position
detection

5. VM1

6. VM1
Main characteristics
 Maintenance-free
 Control of the position open/closed with inductive sensors
 Magnetic actuator with extremely high number of operating cycles
 up to 100,000 operating cycles for breaking capacity up to 25 kA and rated current
up to 1250 A
 up to 50,000 operating cycles with rated current > 1600 A and/or breaking capacity
> 31.5 kA
 Embedding technology to protect vacuum interrupters
 High quality standard
 Interchangeable with VD4
 Developed for universal applications worldwide
 Emergency mechanical opening operation

7. VM1
Functional diagram of electronic controller

8. VM1
-SO4 Undervoltage opening (only with
ED2.0 Full Option)
-SL1 Contact locking the CB closing
-SO3 Auxiliary and safety open (2^ open
command from remote)
-SO2 Open command from remote
-SC2 Close command from remote
DO7 CB Remote Open
DO6 Unit Not Ready
DO5 Unit Ready
DO2 CB closed
DO1 CB open
24 .. 48V AC / 24 .. 60 V DC
100 .. 240V AC / 110 .. 250 V DC
Auxiliary voltage supply

9. VM1
Power supply and
electronic controller Capacitor Inductive sensors

10. VM1
Magnetic actuator

11. VM1
Representation of magnetic flux density distribution
Magnetic latching in end-of-run
position
Armature position: 0 mm
Ampere-turns: 0
Magnetic latching and action of
the magnetic field of a coil
Armature position: 0 mm
Ampere-turns: 12500
Moving armature in opposing
position and magnetic end-of-run
latching
Armature position: 20 mm
Ampere-turns: 5000

12. VM1
Reduction of the magnetic flux density of Koerdym 280 as a function of the lifetime t at an ambient
temperature of 120° C

13. VM1
Basic version
 Closing pushbutton (SC1)
 Opening pushbutton (SO1)
 Mechanical operation counter
 Mechanical signalling device for circuit-breaker open/closed
 Emergency manual opening device
 Lever for manual emergency opening
 Lamp signalling “READY” for the operation (PRDY)
 Capacitors for storing energy for the operation
 Mobile connector for direct connection to the sockets of the
electronic module, to cable the auxiliary circuits
 ED2.0 standard version control module

14. VM1
ED2.0 control module standard version
 Signalling contacts without potential, fitted with relay, with the following
functions:
 N° 1 contact signalling circuit-breaker open (DO1)
 N° 1 contact signalling circuit-breaker closed (DC1)
 N° 1 contact signalling circuit-breaker ready for the operation
(capacitors charged and check of circuit-breaker state) (DR) *
 N° 1 contact signalling circuit-breaker not ready for the operation (DN,
normally closed)
 N° 1 transient contact with momentary closing during the opening
operation (DOR).
Remark: with the circuit-breaker not supplied (without auxiliary power supply) these
contacts are open, except the contact signalling circuit-breaker not ready for the
operation (DN).
*Not available in some versions.

15. VM1
ED2.0 control module standard version
 2 feeder power supply:
 Type 1: 24 ... 48 V AC / 24 ... 60 V DC
 Type 2: 100 ... 240 V AC / 110 ... 250 V DC
Binary inputs (logical inputs) for remote control:
 N° 1 input for closing control (-SC2)
 N° 1 input for opening control (-SO2)
 N° 1 input for additional opening control (-SO3)
 N° 1 input for circuit-breaker opening on direct command from the
protection release PR512 (-SO5)
 N° 1 input for lock on closing control (the same function of the locking
electromagnet in the mechanical actuator of the VD4 circuit-breaker)
(-SL1)
Binary inputs:
 24 ... 240 V AC (– 15% ... + 10%)
 24 ... 250 V DC (– 30% ... + 10%)
 (minimum duration of the impulse is 20 ms)

16. VM1
ED2.0 control module standard version
 Functions:
 Self-opening following determination of incorrect state of circuit-
breaker
 Self-opening following load threshold of the capacitors lower
than the minimum value required for the opening and closing
operation
 Anti-pumping relay function
 Trip-free function
 Monitoring of capacitor load with feeder turning itself off in the
case of exceeding the maximum load level
(these functions can be disabled by means of dip-switches)

17. VM1
ED2.0 control module full option version (on request)
 Signalling contacts without potential, fitted with relay, with the following
functions:
 N° 2 contacts signalling circuit-breaker open (DO1, DO2)
 N° 2 contacts signalling circuit-breaker closed (DC1, DC2)
 N° 1 contact signalling circuit-breaker ready for the operation
(capacitors charged and check of circuit-breaker state) (DR)
 N° 1 contact signalling circuit-breaker not ready for the
operation (DN, normally closed)
 N° 1 transient contact with momentary closing during the
opening operation (DOR)
Remark: difference respect to ED2.0 control module basic version

18. VM1
ED2.0 control module full option version (on request)
 Binary inputs (logical inputs) for remote control:
 N° 1 input for closing control (-SC2)
 N° 1 input for opening control (-SO2)
 N° 1input for additional opening control (-SO3)
 N° 1 input for circuit-breaker opening on direct command from
the protection release PR512 (-SO5)
 N° 1 input for lock on closing control (the same function of the
locking electromagnet in the mechanical actuator of the VD4
circuit-breaker) (-SL1)
 N° 1 input as undervoltage control for (-S04)
Remark: difference respect to ED2.0 control module basic version

19. VM1
ED2.0 control module full option version (on request)
 Functions:
 Self-opening following determination of incorrect state of circuit-
breaker
 Self-opening following load threshold of the capacitor lower than
the minimum value required for the opening and closing
operation
 Anti-pumping relay function
 Trip-free function
 Monitoring of capacitor load with feeder turning itself off in the
case of exceeding the maximum load level
 Undervoltage function with selection of the reference rated
voltage and with possibility of delaying the opening from 0 to 5 s
(-SO4)
 Watchdog of the electronic power circuit with feeder turning itself
off in the case of overtemperature and/or overcurrent
 Slow capacitor charging function (the power load passes from
100 watt to 40 watt, doubling the charging time)
 Monitoring continuity of the opening and closing coils
 Watchdog (DN)
 Additional safety opening command function
Remark: difference respect to ED2.0 control module basic version

20. VM1
Accessories available (on request)
 Signalling auxiliary contacts circuit-breaker open/closed
 Fixed circuit-breaker (-BB1; -BB2; -BB3; -BB8):
 Set of 5 make contacts plus 5 break contacts
 Set of 10 make contacts plus 10 break contacts
(alternatively)
 Withdrawable circuit-breaker (-BB1; -BB2)
 Set of 5 break contacts plus 5 make contacts
 Transmitted contacts of the withdrawable circuit-breaker installed in the
truck (-BT1; -BT2)
These contacts are either in addition or as an alternative to the position
contacts (for signalling circuit-breaker racked out) located in the unit; they
also carry out the function of the position contact (-BT3)
 Position contact of the withdrawable circuit-breaker (-BT3)
With binary input SL1 prevents remote CB closing during translation of the
truck; it is supplied when the transmitted contacts -BT1; -BT2 are not
required
 Motorised truck (-MT) (only for VM1 for UniGear panel)

21. VM1
Features of the control module ED2.0 (standard version)
 The closing coil can only be activated when VM1 is open
 The opening coil can only be activated when VM1 is closed
 Closing is disabled when an opening command is active at the same time
 De-activation of the opening or closing coil takes place when the relative limit position has been reached
 WRONG POSITION (auto trip) function: if the final CLOSED (or OPEN) position is not reached within 70
ms during a closing (or opening) operation, an opening operation is immediately started to guarantee
reaching a defined safe position in any case.
 Anti-pumping function ensures that only one closing-opening cycle is carried out when a closing command
followed by an opening command is active; active closing command must be cancelled and reset for the
next closing operation.
 Activation of the input for the closing command can be locked by means of an external locking signal.
 Input for the “lock on closing” command must be energised to be able to close the circuit-breaker (without
power it inhibits closing).

22. VM1
Features of the control module ED2.0 full version
 Undervoltage function
 controls VM1 opening if the voltage applied drops below the limit of tolerance (established by the
Standards)
 rated voltage value to be monitored is set in the factory in conformity with the order specifications
but it can be changed by dip-switches
 to prevent UVR intervention, when the voltage drops below the specified level (e.g. in the case of
motor starting), it is possible to set a trip time
 UVR function can be disabled
 Monitoring function of the actuator closing and opening coil; if a fault is detected, the luminous
“READY” signal on front of the circuit-breaker turns off and the “READY/NOT READY” signalling contacts
are activated.
 Additional safety opening command function; the second input of the control module for the opening
function is designed so that an opening command is carried out directly even in the case of a fault in the
microprocessor.

23. VM1
Features of the capacitor
 The energy stored is suitable for an O-C-O operating cycle without
recharging
 The energy stored is constantly monitored by measuring the voltage of the
capacitor
 “READY” indication signals:
 application of the power supply voltage
 “ready” status of VM1 for the next operation
 “READY” signal switched on means
 (VM1 in the open position) energy sufficient for one C-O
operating cycle
 (VM1 in the closed position) energy sufficient for one opening
operation; energy available is sufficient for one opening
operation within 60 s from interruption of the auxiliary power
supply (up to 120 s with 2 capacitors)

24. VM1
Lifetime t of aluminium electrolytic capacitors as a function of the ambient temperature T

25. VM1
Characteristic data
Switching energy for CO VM1: 150 J
VD4: 115 J
Capacitor voltage 80 V
Closing cycle
VM1 max. 100 J
without capacitor max. 2.3 kW for 54 ms
Making current max. 29 A for 44 ms
Breaking capacity
with capacitor max. 50 J
without capacitor max. 2.1 kW for 27 ms
Breaking current max. 27 A for 30 ms
Opening time 35 ... 45 ms
Arcing time 10 ...15 ms
Total interruption time 45 ... 60 ms
Closing time 50 ... 60 ms

26. © ABB Group
August 17, 2022 | Slide 26