High Voltage Automatic Vacuum Circuit Breaker 12kv

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Automatic
• Model NO.: JG-120
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: ACB
• Poles Number: 3
• Type: Circuit Breaker
• Function: Circuit-Breaker Failure Protection
• Certification: ISO9001-2000
• Transport Package: Wooden Craft
• Origin: China
• Production Capacity: 1000

Product Description

VACUUM INTERRUPTER

• High current vacuum breaker element
• 630 or 1250A continuous line load
• 20 or 25kA fault current in max 3 sec
• Bushings of epoxy with silicone surface 
• Integrated and synchronized air break switch
• Attachment points for down pole mounted airbreak switch handle
• Visible open points on all 3-phases
• Integrated 3x phase current transformers
• Integrated 1x core balance CT for low earth faults
• 

• DESCRIPTION	JG-120	JG-120
  Rated maximum voltage	12 kV	12 kV
  Rated basic impulse level, P>P	85 kV	85 kV
  Rated basic impulse level, P>E	75 kV	75 kV
  Power frequency withstand, Dry	50 kV	50 kV
  Power frequency withstand, Wet	45kV	45kV

  

DESCRIPTION	12	12
Rated continuous current	630 A	1250 A
Rated fault making current	50 kA	50 kA
Rated fault breaking current	20 kA	25kA
Cable charging current	20 A	40 A
Line charging current	5 A	10 A
Rated fault duration time	3 s	3 s
Contact resistance, VCB	< 35 µΩ	< 35 µΩ
Contact resistance,ABI	< 60 µΩ	< 60 µΩ
Network frequency	50/60 Hz	50/60 Hz