Switching Device Type SF6
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Description
| Performance Data | |||
| Descriptions | 22 kV | 33 kV | |
| Manufacture | Precise Electro Mechanical | ||
| Model / Type or Catalogue No. | ORAP21-396-20MT | ||
| Rated voltage (kV) | 24 kV | 33 kV | |
| Rated frequency (Hz) | 50 | ||
| Rated normal Current (A) (max.) | 630 | 400 | |
| Rated symmetrical interrupting current | 630 | ||
| Rated short-time withstand current, 1 sec (kA r.m.s.) | 12.5 | ||
| Rated short-time making current (kA peak) | 31.5 | ||
| Rated impulse withstand voltage (kA peak) | 125 | 170 | |
| Rated mainly active load breaking capacity (A) | 630 | ||
| Rated transformer off-load breaking capacity (A) | 21 | ||
| Rated cable charging breaking capacity (A) | 10 | ||
Maximum temperature of (A)
|
30 |
||
| Number of operations at rated normal current Interruption | 400 | ||
| Mechanical endurance, in number of operations | 2,000 | ||
| Rated pressure range of SF6 gas (kgf / cm²) | 1.2 | ||
| Pressure of SF6 when locking device operates (kgf / cm²) | 0.7 | ||
| Protection degree of assembled enclosure | IP 67 (SF6 tank) | ||
| Operation force of handle (kgf) | 35 max | ||
| Conductor material of main circuit lead | Copper | ||
| Cross section of main circuit lead | 200 mm² | 120 mm² | |
| Creepage distance of porcelain bushing (mm) | 600 | 900 | |
| Net weight (kg) | 240 | 230 | |
Standard Feature
Performance
- The puffer interrupter has designed for more 400 operations a rated normal current interruption and 2000 operations at on-load.
- 24 VDC Battery is capable to sustain operation in the event of loss of AC power source.
- Toggle mechanism could sectionalize the feeder line in short time. (Close/Open within 1 sec.)
- The switch has been tested in accordance with IEC requirement.
Electrical Remote (SCADA)
- Different control packages are available permitting either onsite operation only or remote (SCADA) operation from a centralcontrol station.
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Switching Device Type SF6
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