Outdoor High Voltage Vacuum Circuit Breaker

ZW7-40.5 outdoor HV vacuum circuit breaker

? Installation way: foundation installation;
? Operating mechanism: spring operating mechanism and electromagnetic operating mechanism;
? Pole material: rubber silicone, ceramic;
? Application: outdoor 33kV substation, power plant.
? Current transformer: internal installation, external installation.

Detailed introduction

Summary
ZW7-40.5 outdoor HV vacuum circuit breaker is a 3-phase AC 50Hz 40.5kV outdoor switch equipment.
? Installation way: foundation installation;
? Operating mechanism: spring operating mechanism and electromagnetic operating mechanism;
? Pole material: rubber silicone, ceramic;
? Application: outdoor 33kV substation, power plant.
? Current transformer: internal installation, external installation.

※ Product Standards
? IEC62271-100 High Voltage Switchgear and Controlgear Part 100: AC Circuit-breakers
? GB1984 High Voltage AC Circuit-breakers
? GB/T11022 Common Specifications for High-voltage Switchgear and Controlgear Standards
? JB/T 3855 High Voltage AC Vacuum Circuit-breakers
? DL/T402 Specification of High-voltage AC Circuit-breakers

※ Environmental Conditions
? Ambient temperature: -40℃~+40℃;
? Altitude: ≤1000m;
? Maximum wind speed is 10km/h, minimum wind speed for the rated level (132/230kv) is 3.2km/h;
? Earthquake intensity: ≤8 level;
? Minimum nominal creepage distance: 31mm/kV;
? Air pollution degree: Class IV.

Technical Specifications

No.	Item			Units	Parameters
1	Rated voltage			kV	40.5
2	Rated insulation level	1min power frequency withstand voltage	dry		95
			wet		80
		Lightning impulse withstand voltage (peak)			185
3	Rated current			A	1250、1600、2000
4	Rated short-circuit breaking current			kA	20、25、31.5
5	Rated operating sequence				O－0.3s -CO- 180s-CO
6	Rated short-circuit breaking current breaki ng times			Times	12
7	Rated short- circu it closed current (peak)			kA	50、63、80
8	Rated peak withstand curren t
9	Rated short-time withstand current			kA	20、25、31.5
10	Rated short-circuit duration			S	4
11	Average opening speed			m/s	1.5 ± 0.2
12	Average closing speed				0.7 ±0.2
13	Contact closing bounce duration			s	≤2
14	Three phase closing and opening synchronism				≤2
15	Opening time				≤150
16	Closing time				≤60
17	Mechanism life			Times	10000
18	Rated operating voltage and aux ilia ry loop rated voltage			V	DC220 、1 10 、24
					AC220 、110 、24
19	Phase loop DC resistance (without current transformer）			uΩ	100
20	Permitted accumulate wear－thickness of dynamic and static contact			mm	3

Model Implication

Overall Dimensions

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