12 VD4 Vacuum-circuit-breaker | Instruction manual 534/01
2.6 Circuit-breaker wiring diagram
Shown with the spring energy storage mechanism in the
discharged state. The wiring diagram comprises the basic
components and all further equipment options for the various
VD4 types. The scope of equipment possible within an indi-
vidual type series is listed in the relevant switchgear list, and
the equipment fitted in each individual case can be found in
the order documentation.
Note:
Shunt releases and blocking magnets are fundamentally wired
with rectifiers (e.g. magnet holder 40 with integrated rectifiers
-TR4, -TR1, -TR3 and -TR2).
Rectifiers function as free-wheeling diodes if d.c.-supply.
1)
Only when -RL1 not fitted
2
) External operation
Sonderbestückung für -BB3
Type 19 Type 20 Type 22 Type 23 Type 24
Figure 2/15 : Wiring diagram
Arrangement for DC: 24, 48, 60, 110, 125, 220, 240 V; AC: 110, 220, 240 V
See page 43 for comparison of VDE/IEC designa
-BS1 Auxiliary switch on operating mechanism
-BL1 Auxiliary switch on blocking magnet
-BB1 Auxiliary switch on the breaker shaft
-BB2 Auxiliary switch on the breaker shaft
-BB3 Auxiliary switch on the breaker shaft
-BB4 Auxiliary switch for fault annunciation
(fleeting contact, time ≥ 30 ms)
-RL1 Blocking magnet
-MO1 Shunt release OFF
-MC Shunt release ON
-MU Undervoltage release
-MO3 Indirect overcurrent release
-MO2 Second shunt release OFF
-TR4 Series rectifier for -RL1
-TR1 Series rectifier for -MO1
-TR3 Series rectifier for -MC and -KN
-TR6 Series rectifier for -MU
-TR2 Series rectifier for -MO2
-MS Charging motor for spring energy store
-KN Anti-pumping relay
-RR Series resistor
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