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Indoor Hv Vacuum Circuit Breaker Zn28

Price:	US $ 800/Piece
Trade Terms:	FOB,CFR,CIF
Min Order:	1/Piece
Pay Type:	L/C,T/T

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Showroom Product Company Profile

Indoor Hv Vacuum Circuit Breaker Model Zn28-12,
Indoor HV Vacuum Circuit Breaker Zn28A
ZN28-12 and ZN28A-12 indoor HV vacuum circuit breaker applies to power system of rated voltage 12kV, three-phase AC 50/60Hz. It used to control and protect electric apparatus in industry like mining, substation and so on. ZN28-12 is a unitary type (operation mechanism is installed inside the switchgear and combine with it as a whole); ZN28A-12 is a hanging-on type (the mechanism and switchgear are seperately installed on cubicle or support frame, then connected with link rod and drive shaft. ) It conforms to IEC62271-100, GB/T1984, JB3855 and DL/T403 standards.

Item			Unit	Parameter
Rated Voltage			kV	12
Rated Current			A	630-1000	630-1000	1250-1600			1600-2000
				1250	1250	2000-2500			3150
Rated Short-circuit Breaking Current			kA	20	25	31.5			40
Rated Short-circuit Making Current (Peak)			kA	50	63	80			100
Rated Peak Withstand Current			kA	50	63	80			100
Rated Short-time Withstand Current			kA	20	25	31.5			40
Rated Insulation Level	Power Frequency Withstand Voltage (Rated Breaking Before and After)		kV	42 (Break 48)
	Lightning Impulse Withstand Voltage (Rated Breaking Before and After)		kV	75 (Break 84)
Rated Operating Sequence				O-0.3s-C O-180s-CO
Mechanical Life			times	10000
Rated Short-circuit Current Breaking Times			times	50
Rated Closing Voltage of Operator (DC)			V	110, 220			220
Rated Closing Current of Operator (DC)			A	71				128
Rated Opening Voltage of Operator (DC)			V	110, 220
Rated Opening Current of Operator (DC)			A	3.0, 1.5
Clearance Between Open Contacts			mm	11± 1
Over travel of Contacts			mm	4± 1
Three-phase Opening/Closing Synchronization			ms	≤ 2
Closing Bouncing Time			ms	≤ 2
Average Opening Speed (excluding Oil Bumper)			m/s	1.2± 0.3
Average Closing Speed			m/s	0.6± 0.2
Opening Time		Highest Operating Voltage	s	≤ 0.06
		Lowest Operating Voltage	s	≤ 0.08
Closing Time			s	≤ 0.2
Main Loop Resistance of Each Phase			μ Ω	≤ 40						≤ 20
Total Thickness of Permissible Wear of Moving and Static Contacts			mm	3
Oil Bumper Buffer Trip			mm	10

Prod Model:	Zn28 (A) -12
Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Type:	Zw28 Vacuum Circuit Breaker
Arc-extinguishing Medium:	Vacuum
Breaking Capacity:	High Voltage Circuit Breakers
Certification:	CB
Operation:	Electric Type
Installation:	Fixed
Speed:	High-Speed Circuit Breaker
Structure:	Moulded Case Circuit Breaker

Zhejiang Xiya Electric Equipment Co., Ltd. (formerly Yueqing XiYa Switch Factory) is located in eastern of Xiangyang Town, among of Wenzhou and Huangyan city, close to the famous scenic spot ---- Yandang Mountain.

Zhejiang Xiya Electric Equipment Co., Ltd. was founded in 1995, invest about more than RMB 10 million, one of the high-tech enterprise of production, sales, research and development. The company covers a land area of 5 acres. We are specialized in manufacturing dropout fuse cutout, zinc oxide arrester, isolating switch, lightning protection insulator, composite insulator, bushing and surge protector and complete sets of products. Our company has been elected to Two-Net reconstructing enterprise by Nation Economy & Trade Committee.