VM1: innovation in power technology

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VM1 innovation in power technology
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VM1 Innovation in medium voltage
technology 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

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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
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• Common look and feel
• the same common look and feel according to PT
  Guidelines for Product Design

new look VM1
new VD4
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• new VD4 and new look VM1 have common frame
  suitable for interchangeable plug-in actuators

new look VM1
new VD4
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Emergency manual breaking mechanism Electronic
controller Magnetic actuator Electrical energy
store Sensors for switching position detection
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• Main characteristics
• Electronic maintenance-free
• Controller with sensor technology
• 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
  gt 1600 A and/or breaking capacity gt 31.5 kA
• Embedding technology to protect vacuum
  interrupters
• High quality standard
• External dimensions compatible with VD4
• Developed for universal applications worldwide

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Single-line diagram of electronic controller
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-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 DC100 .. 240V AC / 110
.. 250 V DC
Auxiliary voltage supply
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Electronic controller
Sensors
Capacitor
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Magnetic actuator
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Representation of magnetic flux density
distribution

Magnetic latching in end-of-run
position Armature position 0 mmAmpere-turns 0
A
Moving armature in opposing position and magnetic
end-of-run latching Armature position 20 mmAmper
e-turns 5000 A
Magnetic latching and action of the magnetic
field of a coil Armature position 0 mmAmpere-tu
rns 12500 A
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y
Reduction of the magnetic flux density of Koerdym
280 as a function of the lifetime t at an ambient
temperature of 120 C
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• 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

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• 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 withdrawable version

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• 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)

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• 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)

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• 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

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• 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

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• 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
  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
• 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

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• 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)

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• 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).

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• 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.

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• 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)

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Lifetime t of aluminium electrolytic capacitors
as a function of the ambient temperature T
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Characteristic data
Switching energy for CO VM1 150 J VD4 115
J Capacitor voltage 80 V Closing cycleVM1 max.
100 Jwithout capacitor max. 2.3 kW for 54
ms Making current max. 29 A for 44 ms Breaking
capacitywith capacitor max. 50 Jwithout
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
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