Siemens 8DJH - Vacuum Circuit-Breaker Type 2

500-8067.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DJH • Revision 05 13/121
Description
7.2 Vacuum circuit-breaker type 2
Features • Vacuum circuit-breaker for rated voltages from 7.2 kV to 24 kV
• According to IEC/EN 62271-100 / VDE 0671-100
• Climate-independent vacuum interrupter poles in the gas-filled switchgear vessel
• Application in hermetically welded switchgear vessel in conformity with the system
• Operating mechanism located outside the switchgear vessel in the front operating
mechanism box
• Maintenance-free according to IEC/EN 62 271-1 / VDE 0671-1
The vacuum circuit-breaker consists of a vacuum interrupter unit with integrated three-
position disconnector located in the switchgear vessel, and the associated operating
mechanisms.
The vacuum circuit-breaker is a circuit-breaker without automatic reclosing.
Operating function The closing and opening spring is charged by means of the operating lever supplied, or by the
motor (option), until the latching of the closing/opening spring is indicated ("spring charged"
indication). Then, the vacuum circuit-breaker can be closed manually or electrically (option).
Fig. 8: Front operating mechanism box of circuit-breaker panel
type 2
①
Ready-for-service indicator
②
Motor for three-position disconnector (option)
③
Actuating opening for CLOSING/OPENING, three-position
disconnector
④
Control gate / locking device for three-position disconnector
⑤
Position indicator for three-position disconnector
⑥
Actuating opening for EARTHING, three-position disconnector
⑦
Sockets for capacitive voltage detecting system
⑧
Motor for circuit-breaker (option)
⑨
Control gate / locking device for circuit-breaker
⑩
Position indicator for circuit-breaker
⑪
OFF pushbutton for circuit-breaker (mechanical operation)
⑫
Actuating opening for "spring charging" (circuit-breaker)
⑬
"Spring charged" indicator
⑭
ON pushbutton for circuit-breaker (mechanical operation)
⑮
Auxiliary switch at the three-position disconnector (option)
⑯
Auxiliary switch at the circuit-breaker (option)