Siemens 8DJH Series Installation And Operating Instructions Manual page 20

Description
Secondary components
Motor operating
mechanism (option)
Closing solenoid (option)
Shunt release (option)
C.t.-operated release
(option)
Low-energy magnetic
release (option)
Undervoltage release
(option)
Circuit-breaker
tripping signal (option)
Varistor module
20
Sequence
Operation
Switch position
Position indicator
"Spring charged" indicator
Closing spring
Opening spring
Secondary equipment of the vacuum circuit-breaker type 2
The scope of the secondary equipment of the vacuum circuit-breaker depends on the
type of application.
Operating voltages for motor operating mechanisms (circuit-breaker and disconnector)
• 24, 48, 60, 110, 220 V DC
• 110 and 230 V AC 50/60 Hz
• Power consumption: 80 W for AC and DC
• For electrical closing (coil voltage is coupled with motor voltage)
• Magnet coil
• Magnet coil with energy store
• Tripping by protection relay or electrical actuation
• For tripping pulse 0.1 Ws in conjunction with suitable protection systems,
e.g. protection system 7SJ45, SEG WIC; other designs on request
• Used if external auxiliary voltage is missing, tripping via protection relay
• For tripping pulse 0.01 Ws, tripping via transformer monitor (IKI-30)
• Comprising:
- Energy store and unlatching mechanism
- Electromagnetic system, which is permanently connected to voltage while
the vacuum circuit-breaker is closed; tripping is initiated when this voltage drops
• Connection to voltage transformers possible
• For electrical signaling (as pulse ≥ 10ms), e.g. to remote control systems, in the case
of automatic tripping (e.g. protection)
• Via auxiliary switch
• Integrated in the releases for voltages > 60 V DC
Revision 03 * INSTALLATION AND OPERATING INSTRUCTIONS 8DJH * 500-8067.9
1 2
Charging the
springs
OPEN OPEN
not charged charged
not charged charged
3 4
CLOSED OPEN
not charged not charged
charged not charged