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ZN28 12KV Draw-out Vacuum Circuit Breaker

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US$ 84 - 130 MOQ: 1 Piece
Key Specifications
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Place of Origin:
Zhejiang, China
Brand Name:
hossin
Model Number:
ZN28-12C
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Yueqing Hossin Electrical Co., Ltd.
Payment & Shipping
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Port of Shipment:
shanghai/ningbo
Delivery Detail:
Delivery time depends on order quantity.

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Place of Origin Zhejiang, China
Brand Name hossin
Model Number ZN28-12C
Type High Voltage
Poles Number 3

ZN28-12C Seires of Withdrawable HV Indoor Vacuum Circuit Breaker

 

 

 

Product Overviews

 

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, mainly installed in metal enclosed Kai counter, applicable to industrial and mining enterprises, power stations and transformer substations, used for control and protection of electric facilities. It is suitable for occasions where require frequent operation.

 

 

Working Conditions

 

1.Ambient temperature: -10°C~+40°C.

2.The height above sea level: ≤ 1000 m (Not including special requirements).

3. Relative humidity: the average humidity of a day should be no more than 95%,the average humidity of a month should be no more than 90%.

4. Saturated vapor pressure: the average pressure of a day should be no more than 2.2kPa; the average pressure of a month should be no more than 1.8Kpa.

5. Earthquake intensity: not exceed 8 degrees.

6. It should be installed in places without fire, explosion, serious filth, 

and chemical erosion and violent vibration.

 

 

 

 

Model&Meaning

 

 

Main Technical Parameter

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

μΩ

≤40

≤20

Total Thickness of Permissible Wear of Moving and Static Contacts

mm

3

Oil Bumper Buffer Trip

mm

10

 

 

Outline Drawing

 

 

 

 

Buying Guides

 

 To order the vacuum circuit breaker, please let us know below info:

1. Rated Voltage

2. Rated Current

3. Rated Breaking Current

4. Fixted type or Draw-out Type

 

 

 

Related Products

ZN28 12KV Draw-out Vacuum Circuit Breaker 

 

 

 

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Yueqing Hossin Electrical Co., Ltd.
Business Type
Manufacturer, Trading Company
Year Established
2006
Factory Size
5,000-10,000 square meters
Total Employees
51 - 100 People
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