• Zn28-12 Series Indoor Fixed High-Voltage Vacuum Circuit Breaker

Zn28-12 Series Indoor Fixed High-Voltage Vacuum Circuit Breaker

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,

Product Details

Quick Details

Description

  • Model NO.: ZN28-12
  • Operation: Manual Type
  • Arc-extinguishing Medium: Vacuum
  • Structure: Moulded Case Circuit Breaker
  • Certification: ISO9001-2000
  • Function: Circuit-Breaker Failure Protection
  • Specification: 12KV
  • HS Code: 8535210000
  • Breaking Capacity: High Voltage Circuit Breakers
  • Speed: High-Speed Circuit Breaker
  • Installation: Fixed
  • Poles Number: 1
  • Type: Circuit Breaker
  • Trademark: ZHON
  • Origin: Zhejiang

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

 Zn28-12 Series Indoor Fixed High-Voltage Vacuum Circuit Breaker

Company Profile

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!

 

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