Item Name: ZW7-40.5 series Outdoor Vacuum Circuit Breaker

The ZW7-40.5 Outdoor Vacuum automatic circuit braker are outdoor HV electrical equipments on three-phase AC 50Hz. It is used for contralling and protecting 24~40.5 KV transmission and distribution systems. It can also be used for network interconnecting breaker and switching capacitor bank matching with segmentation and reclose control of power systems.

Annexing a current transformer inside. It provides measurement and protection. Matching with spring or electromagnrtism operating mechanisms, the breaker has high reliability of mechanical property and can be operated frequently. It has no buming and explosion bazard. The breaker conforms to standards of GB1984-1989 AC HV Breaker and IEC 56, IEC62271-100 HV AC Breaker.

The breaker's main features: Excellent insulating property and strong anti soil performance. According to customer's requests, It can install current transformers inside. The measuring accuracy will be level of 0.2, And it realizes three-phase interaction protection.

Item		Unit	Data
Rated voltage		kV	15	24	36	40.5
Rated insulation	1min power frequency withstand voltage	kA	50	60	70	95
	lightning impulse withstand voltage(peak)		110	150	170	195
Rated current		A	630/1000/1250/1600/2000
Rated short-circuit breaking current		kA	20/25/31.5
Rated operating order		time	O-0.3S-CO-180S-CO
Breaking times of rated short-circuit breaking current		kA	20
Rated short-circuit making current(peak)		kA	50/63/80
Rated peak withstand current		kA
Rated short-time withstand current		kA	20/25/31.5
Rated short-circuit duration time		s	4
Average switch off speed			1.6± 0.3	1.5± 0.2	1.5± 0.2	1.6± 0.3
Average switch on speed			0.7± 0.2	0.7± 0.2	0.7± 0.2	0.8± 0.3
Contact closing bounce time		ms	≤ 5	≤ 5	≤ 5	≤ 5
Three-phase switch-on/off synchroneity time difference			≤ 2	≤ 2	≤ 2	≤ 2
Switch-off time			20~60	20~60	20~60	20~80
Switch-on time			40~120	40~120	40~120	40~120
Mechanical life		time	10000
Rated operating voltage and auxiliary circuit rated voltage		v	DC220, 110
			AC220, 110
Each phase loop DC resistance			≤ 100
Wearing thickness of moving & fixing contacts		mm	3
Weight		kg	400	600	750	800

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