Description
9229 9923 176 0B
15
2013-09-09
Mechanism box
The mechanism box (60.) contains all the electrical and mechanical components
required to switch the vacuum circuit-breaker module on or off. Insulating operating
rods (48.) transfer the switching movement to the pole assemblies.
The mechanism box is closed with a removable cover (60.1).
There are openings in the cover (60.1) for the operating and indicator elements.
Functions
The CLOSE pushbutton (53.) is used to close the vacuum circuit-breaker module.
The motor (50.4) immediately charges the closing spring (62.). If the supply voltage
for the motor fails, the closing spring can be charged with a hand crank (50.). There
is an opening (50.1) for this in the cover, behind which you will find the hand crank
coupling (50.5) of the gear unit (50.2).
Indicators
The charged state of the springs is indicated via the spring state indicator (55.). The
position indicator (59.) shows the CLOSED or OPEN state. The operating cycle
counter (58.) indicates the number of operating cycles. An operating cycle consists
of one closing and one opening. The rating plate (51.) is attached to the pole plate
(15.).
Fig. 9
Operating and indicator elements
50.1
Opening for hand crank
58.
Operating cycle counter
51.
Rating plate
59.
Position indicator CLOSED-OPEN
53.
CLOSE pushbutton
60.1
Cover
54.
OPEN pushbutton
a)
Tightening torque Md = 10 Nm
55.
Spring state indicator
