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50KA High Voltage Vacuum Circuit Breaker Three Phase AC 50HZ 12KV Upto 4000A

50KA High Voltage Vacuum Circuit Breaker Three Phase AC 50HZ 12KV Upto 4000A

  • 50KA High Voltage Vacuum Circuit Breaker Three Phase AC 50HZ 12KV Upto 4000A
  • 50KA High Voltage Vacuum Circuit Breaker Three Phase AC 50HZ 12KV Upto 4000A
  • 50KA High Voltage Vacuum Circuit Breaker Three Phase AC 50HZ 12KV Upto 4000A
  • 50KA High Voltage Vacuum Circuit Breaker Three Phase AC 50HZ 12KV Upto 4000A
50KA High Voltage Vacuum Circuit Breaker Three Phase AC 50HZ 12KV Upto 4000A
Product Details:
Place of Origin: China
Brand Name: Metalwork
Certification: CE, ISO, CCC
Model Number: ZN28G-12
Payment & Shipping Terms:
Minimum Order Quantity: 1 set
Price: Negotiable
Packaging Details: Plywooden package
Delivery Time: 20 days
Payment Terms: L/C, T/T
Supply Ability: 100 sets per month
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Detailed Product Description
Model: ZN28G-12 Breaking Capacity: 20, 25, 31.5, 40, 50KA
Rated Voltage: 12KV Rated Current: 630A, 1250A,1600A, 2000A, 2500A, 3150A,4000A
Mechanical Life: 10000 Times Motor Voltage: DC/AC 110V 220V
Mechanism: Spring Energy Charging Warranty: 1 Year
High Light:

Upto 4000A Vacuum Circuit Breaker

,

50KA Vacuum Circuit Breaker

,

high rupture ability Circuit Breaker

12KV Indoor High-voltage Vacuum Circuit Breaker

ZN28G-12 indoor AC high-voltage vacuum circuit breaker is an indoor switching equipment with three-phase AC 50HZ and rated voltage 12KV.

 

Features of 12KV vacuum circuit breaker:

1. Simple structure, small size and the operating mechanism is the spring energy storage type.

2. It can be operated by AC power or DC power supply.

3. Compound insulated complted structure, small size, low noise and easy installation.

4. Ceramic and glass arc-chutes, with high vacuum insulating performance and special design, high rupture ability, long endurance and no explosive danger.

5. According to different customers' requirements, suitable for all kinds of switchgear.

 

50KA High Voltage Vacuum Circuit Breaker Three Phase AC 50HZ 12KV Upto 4000A 0

 

Mounting Dimension:
50KA High Voltage Vacuum Circuit Breaker Three Phase AC 50HZ 12KV Upto 4000A 1
 Mounting :

Technical Parameters:

Items Unit Date
Rated voltage

 

KV

12
Rated impulse withstand voltage 75
Rated short-time power frequency withstand voltage (1min) 42
Rated frequency Hz 50
Rated short-circuit breaking current KA 20 25 31.5 40
Rated current A

630 1000

1250

630 1000

1250 1600

1250 1600

2000 2500

1600 2000 2500 3150 4000
Rated short-time withstand current KA 20 25 31.5 40
Rated peak tolerable current 50 63 80 100
Rated short-circuit making current (peak value) 50 63 80 100
Secondary circuit power frequency withstand voltage (1min) V 2000
Rated operation sequence  

O-0.3S-CO-180S-CO

O-180S-CO-180S-CO (at 40KA)

Rated duration of short circuit current S 4

Rated single/back-to-back capacitance bank breaking current

Set breaking current

 

A 630/400
Rated short-circuit breaking current DC flow percentage   ≤35%
Average closing speed m/s 0.6±0.2
Average opening speed m/s 1.2±0.3
Opening time ms ≤60
Closing time ms ≤80
Mechanical life times 10000
Rated short-circuit breaking current breaking times times 30
Allowable wear accumulate thickness of moving and static contacts mm 3
Rated closing operating voltage v AC110/220 DC110/220
Rated opening operating voltage v AC110/220 DC110/220
Rated voltage of energy storage motor v AC110/220 DC110/220
Contact opening distance mm 11±1
Contact stroke mm 4±1
Contact bounce time ms ≤2

Three - phase opening and closing

heterogeneity

ms ≤2
Opening contact rebound amplitude ms ≤3
Main circuit resistance Ω ≤40 (≤25 at 40KA)

 
 
 
 

Contact Details
METALWORK MACHINERY (WUXI) CO.LTD

Contact Person: Mrs. Mary Ji

Tel: +8615370218084

Send your inquiry directly to us (0 / 3000)

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