Operating Mechanisms For Three-Position Switch - Siemens NXPLUS C Installation And Operating Instructions Manual

Equipment
Slow motion mechanism
Application:
• Circuit-breaker panel
• Air-insulated metering panel
• Disconnector panel
• Bus sectionalizer panel
Feature
• Rotary lever mechanism 180°
Options for all operating
mechanisms
806-9004.9 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • Revision 02
The basic version of the three-position switch-disconnector is equipped as follows:
• Auxiliary switch, freely available
- In EARTHING function with 6NO + 6NC
- In DISCONNECTING function with 6NO + 6NC
• Manual operating mechanism
• Mechanical interlocking (connection compartment cover can be removed only in the
earthed position)
Can be ordered optionally.
• Motor operating mechanism
• Electromechanical interlock
9.5

Operating mechanisms for three-position switch

The three-position disconnector and the three-position switch-disconnector are operated from
the switchgear front using the operating mechanisms.
Operating mechanisms
Spring-operated mechanism
Application:
• Ring-main panel
• Metering panel
• Vacuum contactor panel with HV HRC fuses
Feature
• Rotary lever mechanism 90°
• Motor operating mechanism
- Remote operation (standard) applied to terminal
- Local operation by momentary-contact rotary control switch (option)
- Manual operation possible with operating lever
• Shunt release (f-release)
- Spring-operated/stored-energy mechanisms can be equipped with a shunt release. Remote
electrical tripping of the three-position switch-disconnector is possible via the magnetic coil
of the shunt release, e.g. transformer overtemperature tripping.
• Wiring
- Auxiliary switches, motor operating mechanisms or shunt releases are wired to terminal
strips in the low-voltage compartment.
Spring-operated/stored-energy mechanism
Application:
• Auxiliary transformer panel
• Switch-disconnector panel
Feature
• Rotary lever mechanism 90°
• Additional energy store for the "stored-energy
OPEN" function after tripping by HV HRC fuse or
shunt release
Description
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