Download  Print this page

First Closing Operation - Siemens 3AK Operating Instructions Manual

Vacuum circuit-breaker module.
Hide thumbs


Hand crank
Fig. 51
Charging the closing spring with the hand
Do not commission the vacuum circuit-breaker module if there are malfunctions.
If the malfunctions or the damage cannot be remedied, contact a sales represent-
ative or Siemens Service and, if necessary, send back the vacuum circuit-breaker

First closing operation

If all functions have been checked and are ok, switch on high-voltage while observ-
ing all of the safety regulations and operative requirements.
Charging the closing spring
Risk of injury if hand cranks other than the original hand crank are used.
When the supply voltage is present, the motor immediately recharges the spring
after a closing operation. If the hand crank does not have a slip coupling, the hand
crank will also rotate.
To avoid injuries caused by the motor starting suddenly, the vacuum circuit-
breaker module must be charged only using the original hand crank.
If the supply voltage is applied, the closing spring (62.) is automatically charged by
the motor (50.4).
If the supply voltage fails, the closing spring (62.) can be charged with a hand crank
1. For this, fit the hand crank (50.) onto the hand crank coupling (50.5) through the
opening (50.1) with the adapter pushed forward (50.6).
2. Turn clockwise until the spring state indicator (55.) changes over:
Fig. 52
Operating elements and spring state indicator
9229 9923 176 0B


   Related Manuals for Siemens 3AK

This manual also for:


Comments to this Manuals

Symbols: 0
Latest comments: