Siemens 8DJH - Closing Circuit-Breaker Type 2; Opening Circuit-Breaker Type 2

Operation
100/121 Revision 05 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DJH • 500-8067.9
19.2 Closing circuit-breaker type 2
Preconditions • Circuit-breaker in OPEN position
• Three-position disconnector in CLOSED
position
• "Spring charged" indicator shows "spring
charged"
• Auxiliary voltage applied at the undervoltage
release (option)
➭ Check service readiness (see page 85,
"Ready-for-service indicator").
Closing the
circuit-breaker
➭ Actuate the ON pushbutton.
✔ The position indicator of the circuit-breaker
is in CLOSED position.
✔ The "spring charged" indicator still shows
"spring charged".
19.3 Opening circuit-breaker type 2
Preconditions • Circuit-breaker in CLOSED position
• Three-position disconnector in CLOSED
position
• "Spring charged" indicator shows "spring
charged"
• Auxiliary voltage applied at the undervoltage
release (option)
➭ Check service readiness (see page 85,
"Ready-for-service indicator").
Opening the circuit-
breaker
➭ Actuate the OFF pushbutton.
✔ The position indicator of the circuit-breaker
shows the OPEN position.
✔ "Spring charged" indicator shows "spring not
charged".
ATTENTION
The circuit-breaker can be damaged by no-load switching. After charging the spring energy
store, do not open the circuit-breaker directly.
➭ After charging the spring energy store, close the circuit-breaker first, and then open it.