high voltage vacuum circuit breaker
1.vacuum circuit breaker
2.Reliable and maintenance free
3.Long service life,non exploration
4.Short delivery time
ZN85-40.5 type indoor high voltage vacuum circuit breaker is appropriate to 40.5kv,50Hz three phase current system, applicable to break loading current ,over load current ,fault current in mining industrial enterprise, power station, transformer substation. The layout of circuit breaker and operating mechanism are assembled up and down, which reduced the depth of circuit breaker effectively. Three poles interrupter and jointed charged body are isolated by epoxy resin insulator. This composite isolate structure meets the requirement of air and creepage distance and decreased the circuit breaker volume. Main conductive circuit ,vacuum interrupter, moving and fixed conductive joint are mounted in the cylinder, which makes the distance of each pole is only 300mm.Main circuit electrical joints are reliable all fixed joint. Specialized designed spring operating structure is fixed in the frame of circuit breaker. This simple design makes the output curve and performance greatly matches to 40.5kv circuit breaker. The overall layout is reasonable, simple and free of maintain. It can be used in frequent and harsh operating condition.
Ambient condition
1 Ambient temperature: max +40°C min -15°C(conveyance under -30°C is allowed)
2 Altitude: ≤1000m
3 Relative humidity: daily average relative humidity: ≤95%; monthly average relative humidity≤90%, daily average saturated vapor pressure ≤2.2*10-3 MPa,monthly average value ≤1.8*10-3 MPa
4 Earthquake intensity: ≤8 degree
5 The installation should be free from fire, explosion, severe vibration, chemical corrosion and serious pollution
Order instruction
Complete model and order quantity of the product
Rated current, rated voltage, rated short circuit breaking current
Rated voltage of operation mechanism open and close release, rated voltage of energy saving motor
Required accessory and quantity
Other requirement please contact with us directly
Main Technical Data | |||
Rated voltage | kv | 40.5 | |
Rated lighting impulse withstand voltage(peak) | kv | 185 | |
Rated short-time power frequency withstand voltage(1min) | kv | 95 | |
Rated short-circuit breaking current | kA | 25 | 31.5 |
Rated current | A | 1250/1600 | 1250/1600/2000 |
Rated peak withstanding current | kA | 63 | 80 |
Rated operations of short-circuit breaking current interruption | times | 20 | |
Rated duration of short-circuit | s | 4 | |
Rated operating sequence | 0-0.3-CO-180s -CO | ||
Supply voltage of open and close installation | v | AC,DC220 AC,DC110 | |
Closing time | ms | 50~100 | |
Opening time | ms | 30~60 | |
Rated single capacitor bank breaking current | A | 630 | |
Rated back to back capacitor bank breaking current | A | 400 | |
Mechanical life | times | (M1 degree)10000 | |
Mechanical characteristics adjustment data | |||
Rated contact stroke | mm | 22±2 | |
Contact overtravel | mm | 8±2 | |
Average opening speed | m/s | 1.8±0.2 | |
Average closing speed | m/s | 0.65±0.2 | |
Contact bouncing duration at closing operation | ms | ≤3 | |
Type of operatinf structure | Special 3AV sprinf operating structure | ||
Three-pole simultaneity | ms | ≤2 | |
Condactive circuit resistance of each phases | μΩ | ≤45 | |
Note:Rated characteristics can be given on requirment |