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Outdoor High-Voltage Vacuum Circuit Breaker ZW7-40.5

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Outdoor High-Voltage Vacuum Circuit Breaker ZW7-40.5

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Product Description
Normal Operating Environment
Technical Parameters

The ZW7-40.5 series outdoor high-voltage vacuum circuit breakers are applied in three-phase power systems with a rated voltage of 40.5kV and a frequency of 50Hz, serving to make and break load current, overload current and short-circuit current.

Name		Value
Rated voltage		40.5KV
Rated Insulation Level：	1minPower Frequency Withstand Voltage (1min, Dry Test)	95kv
	Power Frequency Withstand Voltage (1min, Wet Test)	80KV
	Lightning Impulse Withstand Voltage (Peak)	185KV
Rated Current		1250；1600；2000A
Rated Short-Circuit Breaking Current		20 ;25; 31.5KA
Rated Operating Sequence		Open - 0.3s - Close-Open - 180s - Close-Open
Number of Rated Short-Circuit Breaking Operations		12times
Rated Short-Circuit Making Current (Peak)		50 ；63； 80KA
Rated Peak Withstand Current
Rated Short-Circuit Duration		4s
Contact Opening Stroke		22±2s
Contact Over-Travel		4±1 mm
Average Opening Speed		1.5±0.2
Average Closing Speed		0.7±0.2
Contact Closing Bounce Time		≤2
Three-Phase Opening/Closing Synchronism Deviation		≤2
Closing Time		≤150
Opening Time		≤60
DC Resistance per Phase Circuit		≤100μΩ
Center Distance Between Phases		710mm
Allowable Wear Thickness of Moving & Fixed Contacts		3mm
Overall Dimensions (L×W×H)		25415762218 mm
Mechanical Life		10000
Rated Operating Voltage & Auxiliary Circuit Rated Voltage		DC110/220 AC110/220
DC Resistance per Phase Circuit (Excluding Transformer)		≤100
Weight		800kg