The apparatus is designed to protect people from electric shock and other dangerous consequences of earth leakage in electrical networks of three-phase alternating current with frequency 50 Hz voltage 380/660 V or 660/1140 V with insulated neutral transformer. The device is structurally designed in a separate flameproof enclosure.
Operating conditions:
- Ambient temperature from minus 40°C to 65°C;
- Relative humidity of air (98±2) % at ambient temperature (35±2) °?.
Ambient temperature (35±2) °C.
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