For monitoring temperature, insulation and mechanism of medium voltage switchgear, we developed an on-line monitoring system.
- Ambient air temperature: upper limit +40°C lower limit general area -10°C;
- Height: 1000 m;
- Humidity: relative humidity: daily average is no more than 95%, monthly average is no more than 90%; Water vapor pressure: daily average is not greater than 2.2KPa, monthly average is not greater than 1.8KPa; Condensation may occur when the temperature plummets, accompanied by contamination. This product is suitable for the following two more severe than normal environmental conditions:
- a. Infrequent condensation (no more than twice a month on average) with mild contamination;
- b. Generally there is no condensation (no more than twice a year on average) with more serious contamination;
- No fire, explosion hazard, or gases of sufficient severity to corrode metal and break insulation;
- There is no place for violent vibration, jolting and vertical inclination not exceeding 80 degrees.
- a. Allow storage and transportation at -30°C.
- b. If the altitude is more than 1000m, it should be handled in accordance with JB/2102 "technical requirements for high-voltage appliances in the altitude area". When the altitude is less than 2000m, the low-voltage auxiliary equipment does not need to take any measures.
- If the above normal conditions of use are exceeded, the user may negotiate with the company.
Technical Parameters
Item | Unit | Data |
Rated Voltage | kV | 3.6/7.2/12 |
Rated Frequency | Hz | 50 |
Rated Current of Circuit Breaker | A | 630/1250/1600/2000/2500/3150 |
Rated Voltage of Switchgear | A | 630/1250/1600/2000/2500/3150 |
Rated Short-time Withstand Current (4s) | kA | 16/20/25/31.5/40/50 |
Rated Peak Withstand Current (Peak Value) | kA | 40/50/63/80/100/125 |
Rated Short-circuit Breaking Current | kA | 16/20/25/31.5/40/50 |
Rated Short- circuit Closing Current | kA | 40/50/63/80/100/125 |
1min Power Frequency Withstands Voltage | kV | 24/ 32/ 42 |
Lightning Withstands Voltage / Rated Insulation Leve | kV | 40/ 60/ 75 |
Protection Grade | Shell is IP4X/ Shell is IP2X when compartment and circuit breaker doors are open |


