Charging The Closing Spring Manually - Siemens 8DA10 Series Installation And Operating Instructions Manual

861-9601.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • Revision 11
36.5

Charging the closing spring manually

The closing spring is charged by the motor after applying control voltage. The energy required
for the operating sequence OPEN-CLOSED-OPEN (auto-reclosing) is stored in the closing
spring about 15 seconds after closing the circuit-breaker.
Fig. 192: "Closing spring charged"
indication
The hand crank is required to charge the closing spring manually if the control voltage fails.
High speed moving parts
Using an incorrect hand crank can cause injury.
➭ Use exclusively the hand crank provided with the switchgear accessories.
The hand crank supplied features a freewheel function. The freewheel function
disconnects an inserted hand crank from the charging system when the motor charges the
closing spring.
➭ Remove cover from cutout.
➭ Insert hand crank.
➭ Turn hand crank clockwise approx. 48 turns until the indication "closing spring charged"
appears.
➭ Remove hand crank.
➭ Close cutout with cover.
Fig. 193: "Closing spring not charged"
indication
CAUTION
Operation
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