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SF6 Ring Main Unit(RMV6)
SF6 Ring Main Unit(RMV6)
GENERAL FEATURES
- Compact extensible unit combining different kinds of MV functional units to make a ring or radial network, for protecting transformers
- Fuse switch combination up to 1600 KVA
- Fuse switch combination with watch-dog function up to 1600 KVA
- C.B (200A)
- CB (630A) rede CB
* Watch-dog functions are under request - Line protection with 630A circuit breaker
- Network switching by load break switch
- SCADA mate : remote operation, voltage, current sensor, sensitive zero phase CT’s
- Uses 2 switch LBS and one fuse switch combination with control
- Uses 2 CB and one dummy part with control
* Very fast transfer time – outage time can be below 1 cycle - Compact : “All in one” units in a single stainless steel enclosure
- Extensible : Extensible to left and or right side without handling gases, no special tools
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TECHNICAL DATA
| SD MODULE | FS MODULE | CB MODULE | |||||
|---|---|---|---|---|---|---|---|
| Switch | ES | Switch | Down-stream | CB | ES | ||
| ES | |||||||
| Rated Voltage | kV | 17.5/24 | 17.5/24 | 17.5/24 | 17.5/24 | 17.5/24 | 17.5/24 |
| Power frequency withstand | kV | 38/60 | 38/60 | 38/60 | 38/60 | 38/60 | 38/60 |
| Impulse withstand | kV | 95/125 | 95/125 | 95/125 | 95/125 | 95/125 | 95/125 |
| Rated current | A | 630 | 200/630 | 200/630 | |||
| Breaking capacity | |||||||
| Active load | A | 630 | |||||
| Closed loop | A | 630 | |||||
| Off load cable charging | A | 200/150 | |||||
| Earth fault | A | 115/87 | |||||
| Earth fault cable charging | A | ||||||
| Short Circuit breaking | A | 20/12.5 | |||||
| Transfer | |||||||
| Making capacity | 50 | 50 | 50 | 12.5 | 50/32.5 | 50 | |
| Short time current 1sec | 25 | 25 | 5 | 20/12.5 | |||
| Short time current 3sec | 20 | 20 | 20 | ||||
| Operation time | |||||||
| Close | Sec | 0.7 | <0.045 | <0.045 | |||
| Open | Sec | 0.7 | <0.045 | <0.045 | |||
| Spring charge | Sec | <8 | <8 | ||||