Electric Circuit Diagram - ABB Vmax Manual

Medium voltage vacuum circuit-breaker
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9. Electric circuit diagram

Circuit-diagram of Vmax circuit-breaker in withdrawable
version for PowerCube with EL operating mechanism.
For other circuit-breakers, please consult us.
The diagram indicates the following conditions:
– circuit-breaker off and connected
– circuits de-energized
– closing springs discharged
graphical symbols for electrical diagrams (617 ieC Standards)
Thermal effect
Electromagnetic effect
Delay
Pushbutton control
key control
Earth (general symbol)
42
Frame
Conductors in screened
cable (two conductors
shown)
Connection of
conductors
Terminal or clamp
Socket and plug
(female and male)
Resistor
(general symbol)
Capacitor
(general symbol)
Motor (general symbol)
Rectifier in full wave
connection (bridge)
Make contact
break contact
Change-over
break before
make contact
Passing make
contact closing
momentarily
when its operating
device is released
Position switch
(limit switch) make
contact
Position switch
(limit switch) brake
contact
Circuit-breaker with
automatic release
Operating device
(general symbol)
Lamp
(general symbol)

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