Models MGW1-12, 24, 40.5 are outdoor disconnectors, designed to turn on and off de-energized sections of the electrical circuit with a rated voltage of 10 kV, 20 kV or 35 kV and an alternating current frequency of 50 and 60 Hz. The special version can be used in severe pollution areas.
Environmental conditions
Height: <3000m;
Ambient temperature: -30 ° С- + 40 ° С;
Wind speed: <35 m / s;
Air pollution: IV;
Earthquake intensity: <8 degrees;
Ice thickness: <10 mm.
Technical Specifications for MGW1-12 Disconnector:
| №. | Element | Unit | Data | |||
| 1 | Rated voltage, kV | kV | 10, 20, 35 | |||
| 2 | Maximum operating voltage | kV | 12, 24, 40.5 | |||
| 3 | Rated current | A | 630, 1000, 1250 | |||
| 4 | Rated industrial frequency | Hz | 50/60 | |||
| 5 | Rated peak withstand current | kA | 50, 63 | |||
| 6 | Rated short-time withstand current | kA | 20, 25 | |||
| 7 | Rated short-time withstand current | s | 4 | |||
| 8 | Main circuit resistance | μOhm | 12kV=S80 | 24kV=S90 | 40.5kVs=100 | |
| 9 | 1 minute (dry) withstand voltage of industrial frequency | kV | 42/48 | 50/60 | 95/115 | |
| 10 | 1 minute (wet) withstand voltage of industrial frequency | 34 | 50 | 85 | ||
| 11 | lightning impulse withstand voltage (peak) | 75/85 | 125/145 | 185/215 | ||
| 12 | Switching cycles | cycle | 2000 | |||
The primary function of a disconnector is to serve as a visual indicator of whether an electrical connection is open or closed; this lets network operators know if the circuit/equipment is either energised or de-energised.
It is important operators can confirm the energised state of the circuit/equipment in order that they can safely perform inspections, maintenance, and repairs, without unnecessary risk.
Dimensions of MGW1 Disconnectors (mm)
| Модель | Dimensions (mm) | ||||
| B | C | D | E | F | |
| MGW1-12/630-20 | 400 | 1000 | 1200 | 565 | 510 |
| MGW1-24/630-20 | 375 | 395 | 1155 | 695 | 650 |
| MGW1-40.5/630-20 | 500 | 1250 | 1450 | 815 | 728 |
| Vertical (V) | 130 ° |
| Horizontal (H) | 50 ° |
| Mounting Method | A |
| Модель | A | B | C | D | E |
| MGW1-12D/1250 | 400 | 1050 | 400 | 590 | 403 |
| MGW1-24D/1250 | 450 | 1160 | 450 | 650 | 530 |
| MGW1-40.5D/1250 | 500 | 1300 | 550 | 730 | 620 |
Models with grounding knives and lightning arrestor
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