Siemens NXPLUS C - Voltage Transformers 4 MT

Description
28/293 Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • NXPLUS C • 802-9081.9
Spring-operated/stored-energy mechanism (rotary lever mechanism 90°)
• Application in switch-disconnector panel
• With additional energy store for the function "stored-energy OPEN" after tripping by a
HV HRC fuse-link (striker tripping) or a shunt release
Options for all operating
mechanisms
• 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.
9.6 Voltage transformers 4MT
In NXPLUS C switchgear, voltage transformers type 4MT2 and type 4MR can be mounted
optionally.
Common features • According to VDE 0414-9-3 and IEC 61869-3
• Cast-resin insulated
• Inductive type
• Arranged outside the primary enclosure (switchgear vessel)
Mounting locations • At the busbar (4MT2)
①
Position indicator for three-position switch
(DISCONNECTING function)
②
Interrogation lever
③
Position indicator for three-position switch
(EARTHING/READY-TO-EARTH function)
④
Ready-for-service indicator
⑤
Actuating opening for earthing switch (EARTHING/
READY-TO-EARTH function)
⑥
Actuating opening for disconnector
(DISCONNECTING function)
⑦
Control gate
①
Position indicator for three-position switch
(DISCONNECTING function)
②
Position indicator for three-position switch
(EARTHING/READY-TO-EARTH function)
③
Interrogation lever
④
Actuating opening for earthing switch
(EARTHING/READY-TO-EARTH function)
⑤
Actuating opening for disconnector
(DISCONNECTING function)
⑥
Control gate
⑦
Ready-for-service indicator