Vacuum Circuit Breakers for Middle-Plased Cabinets Zn85-40.5

ZN85-40.5 indoor high voltage vacuum circuit breaker is suitable for three-phase AC 50Hz, 40.5kV system,which can be used by industrial and mining enterprises, power plants and substations as divided loadcurrent, overload current fault current, and suitable for frequent operation occasions.

描述.jpg

Indoor High Voltage Vacuum Circuit Breaker is three-phase AC 50Hz, Rated voltage of 12kV indoor device, For industrial and mining enterprises, power plants and substations as electrical equipment control and protection purposes, and for frequent operation of the place. It can be fixed in a switch cabinet or installed on a handcart. Stable performance and easy installation.
Applying Ambient Conditions:
• Ambient temperature: not higher than +40°C, not less than −10°C (at −30°C to allow storage and transportation).

• Altitude: not exceed 1000m.

• Relative humidity: daily average of not more than 95%, saturated vapor pressure on the average of not more than 2.2×10-3MPa, On average not more than 1.8× 10-3MPa.

• Earthquake intensity: not more than eight.

• No fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration.

Product Parameters

Item	Unit	Data
Rated Voltage	KV	40.5
Rated Current	A	1250 1600 2000
Rated Frequency	Hz	50
Rated Short Circuit Breaking Current	KA	25 31.5
Rated Short Circuit Closing Currnet (Peak)	KA	63 80
4S Rated Short Time Withstand Current	KA	25 31.5
Rated Peak Withstand Current	KA	63 80
1Min Power Frequency Withstand Voltage	KV	95
Lightning Impulse Withstand Voltage	KV	185