Sf6 Circuit Breaker, Outdoor High Voltage 33kv 66kv 110kv 220kv 400kv 550kv

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Markevina Technology (Shenzhen) Co., Ltd.

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Profile Certified by SGS/BV
MK-EP1699
High Voltage Circuit Breakers
Electric Type
High-Speed Circuit Breaker
SF6
Open Frame
MCCB
3
Circuit Breaker
Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
ISO9001-2000, CE, CCC
Markevina or OEM
Wooden Case
Customized
China
Product Description
SF6 Circuit Breaker, Outdoor High Voltage 33KV 66KV 110KV 220KV 400KV 550KV

Technical parameters of circuit breaker
 

Item

Company
Technical parameter
Cyt (Bellinger) YT (ABB)
Rated voltageKV550
Rated frequencyHz50
Rated currentA4000
Rated short-circuit breaking currentKa63
Near zone fault breaking currentKa56.7
Rated out of step breaking currentKa15.8
Rated peak withstand currentKa160
Rated short-circuit making current (peak value)Ka160
Rated short-time withstand currentKa63
Rated short circuit durationS3
Rated line charging breaking current (effective value)A500
Rated short-circuit continuous breaking timessecond20
Shunt capacitor value (per fracture)PF2500
Resistance value of parallel combined switch (single pole)Ω400 ± 5% (can be configured according to system requirements)
Mechanical life of circuit breakersecond5000
Rated SF6 gas pressure (20 ºC)MPa0.6
Moisture content of SF6 gas in the body (when leaving the factory)PPM≤150
Annual leakage rate of SF6 gas%The≤0.5
Weight of single pole SF6 gasKg20 (without resistance) /25 (with resistance)
Single pole weight of circuit breakerKg2840 (without resistance) /3800 (with resistance)
Closing operating force / opening operating forceKn60/130

Allowable tension of terminal block
Horizontal longitudinalN2800
Horizontal horizontalN2400
vertical directionN1000

Insulation level of circuit breaker
 
ItemUnittechnical parameter
SF6 gas zero gauge pressure 5min
Power frequency withstand voltage (effective value)
One phase incoming and outgoing lineKV476
RelativelyKV476
Rated short-time power frequency withstand voltage
1min (effective value)
One phase incoming and outgoing lineKV740(+315)
Phase to ground and phase to phaseKV740
Rated lightning impulse withstand voltage
1.2/50μS (peak)
One phase incoming and outgoing lineKV1675(+450)
Phase to ground and phase to phaseKV1675

Rated operating impulse withstand voltage 250/2500μS (peak)
One phase incoming and outgoing lineKV1175(+450)
InterphaseKV1950
RelativelyKV1300

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