Service Conditions for Low-Voltage Switchgear

1. The ambient air temperature must not exceed +40°C or fall below -5°C, and the average temperature over a 24-hour period must not exceed +35°C.
2. The air must be clean; relative humidity must not exceed 50% at a maximum temperature of +40°C, though higher relative humidity is permissible at lower temperatures.
3. Pollution degree: 3.
4. The installation site altitude must not exceed 2,000 m.
5. Special operating conditions are subject to negotiation at the time of ordering.