Zhejiang Zhongneng Electrical Co., Ltd. >> Indoor High-Voltage Vacuum Circuit Breaker Zn28 (A) -12

Indoor High-Voltage Vacuum Circuit Breaker Zn28 (A) -12

Name: Indoor High-Voltage Vacuum Circuit Breaker Zn28 (A) -12
Brand: china-manufacturer-directory.com
SKU: 696359905
Availability: InStock
Rating: 5 (103 reviews)

Supplier:	Zhejiang Zhongneng Electrical Co., Ltd.
Price:	Negotiable/Piece
Min Order:	1/Piece
Quantity::
Trade Terms:	FOB,CFR,CIF

Product Specifications

Prod Model:	ZN28 (A) -12
Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Type:	Circuit Breaker
Function:	Circuit-Breaker Failure Protection
Arc-extinguishing Medium:	Vacuum
Breaking Capacity:	High Voltage Circuit Breakers
Poles Number:	1
Certification:	ISO9001-2000
Operation:	Manual Type
Installation:	Fixed
Speed:	High-Speed Circuit Breaker
Structure:	Moulded Case Circuit Breaker

Product Description

ZN28(A)-12 series indoor high-voltage vacuum circuit breaker is a kind of three-phase indoor high-voltage switchgear of rated voltage 12kV and AC 50Hz,

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

Zhejiang Zhongneng Electrical Co., Ltd., located in Zhejiang Province, is the key medium/high voltage electric productive enterprise of FATO Mechanical and Electrical Equipment Group Co., Ltd.And a provincial advanced enterprise, mainly producing 220kV and below high voltage electro ceramic products, especially lightning arrester series, composite insulator series and drop-out fuse cutout series, and low-voltage surge protective device series.Our products have complete testing devices and strict quality and production management systems.Our products are known for the characteristics of solid power, advanced science and technology, considering service and solid quality.Moreover, for some core products, we have the independent intellectual property right.

Our corporation has the independent corporate capacity.Our progenitor is the division store of Suzhou Surge Arrester Co., Ltd.Which is founded in 1989, and after joined into FATO Mechanical and Electrical Equipment Group Co., Ltd.In 2003, we changed the name to Zhejiang Zhongneng Electrical Co., Ltd.

Zhejiang Zhongneng Electrical Co., Ltd.Is the professional over-voltage protectors manufacturing enterprise, and a member unit of China Electric Industry Association.We passed the certification of ISO9001 quality system and confirmed to standards such as IEC 60099-4, 61643-1, 291, 282 issued by international electric and industrial committee.Moreover, we have a long-term technical cooperation with many technical and research institutes and core enterprises in this industry line, and the qualities of our products can stand long-time decimation.

Following the technical and economical developing step, and the globalization process, in the merger process of global advantage resources, we constantly expect the cooperation coming from global partner.We are looking forward to cooperating with you!