Categories
Price: | US $ 800/Piece |
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Trade Terms: | FOB,CFR,CIF |
Min Order: | 1/Piece |
Pay Type: | L/C,T/T |
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 |
Prod Model: | Zn28 (A) -12 |
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Markets: | North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe |
Type: | Zw28 Vacuum Circuit Breaker |
Arc-extinguishing Medium: | Vacuum |
Breaking Capacity: | High Voltage Circuit Breakers |
Certification: | CB |
Operation: | Electric Type |
Installation: | Fixed |
Speed: | High-Speed Circuit Breaker |
Structure: | Moulded Case Circuit Breaker |