Siemens NXPLUS C Installation And Operating Instructions Manual page 14

Description
Vacuum interrupters
Equipment
Additional equipment
Possible release
combinations
14/172
If the motor supply voltage fails, the closing spring can be charged manually. To do this, there
is an opening in the cover with the hand crank coupling of the gear behind. The charging
condition of the spring can be read on the indicator.
The operations counter shows the number of closing processes.
The vacuum interrupter is fixed at the interrupter support. The fixed contact is directly
connected to the housing. The moving contact is firmly connected to the connection bolt and
is centrally aligned in the guide. A metal bellows forms the vacuum-tight connection to the
interrupter housing.
Fig. 5: Vacuum interrupter
The basic version of the vacuum circuit-breaker with manual spring-operated mechanism is
equipped as follows:
• Operating mechanism
• Shunt release (Y1)
• Low-voltage plug connector with 10-pole wiring (Q0)
• Auxiliary switch 4NO + 4NC or 3NO + 4NC freely available (S1)
• Circuit-breaker tripping signal, cutout switches (S6, S7)
• Operations counter
• Feeder locking device
• Motor operating mechanism (M1) with mechanical and electrical anti-pumping device
• Position switch for "closing spring charged" indication (S41, S42)
• Closing solenoid (Y9) (option)
• 2nd shunt release (Y2)
• Undervoltage release (Y7)
• C.t.-operated release (Y4)
• Low-energy c.t.-operated release (Y6)
• Interlocking between feeder locking device and three-position disconnector (circuit-breaker
only lockable in earthed position)
• Interlocking between feeder locking device, three-position disconnector and cable
compartment cover (circuit-breaker only lockable in earthed position, cable compartment
cover only removable in earthed position)
• Interlocking between feeder locking device, three-position disconnector and cable
compartment cover (circuit-breaker only lockable in earthed position, cable compartment
cover only removable in earthed position) and additional key-operated interlock
Release
1st shunt release
2st shunt release
3st shunt release
C.t.-operated release
Undervoltage release
X: 1 unit of each release, a maximum of 3 releases can be combined
Revision 05 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C Wind • 802-9074.9
Type 3AY1510
Type 3AX1101
Type 3AX1101
Type 3AX1102; 0.5 A or
Type 3AX1104, 0.1 Ws
Type 3AX1103
Release combination
1 2 3 4
X X X X
– X – –
– – – –
– – X –
– – – X
5
X
X
–
X
–