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

Basic Info.

Model NO.	MK-EP1699
Type	Circuit Breaker
Function	Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
Certification	CE, CCC
Transport Package	Wooden Case
Trademark	Markevina or OEM
Origin	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 voltage		KV	550
Rated frequency		Hz	50
Rated current		A	4000
Rated short-circuit breaking current		Ka	63
Near zone fault breaking current		Ka	56.7
Rated out of step breaking current		Ka	15.8
Rated peak withstand current		Ka	160
Rated short-circuit making current (peak value)		Ka	160
Rated short-time withstand current		Ka	63
Rated short circuit duration		S	3
Rated line charging breaking current (effective value)		A	500
Rated short-circuit continuous breaking times		second	20
Shunt capacitor value (per fracture)		PF	2500
Resistance value of parallel combined switch (single pole)		Ω	400 ± 5% (can be configured according to system requirements)
Mechanical life of circuit breaker		second	5000
Rated SF6 gas pressure (20 ºC)		MPa	0.6
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 gas		Kg	20 (without resistance) /25 (with resistance)
Single pole weight of circuit breaker		Kg	2840 (without resistance) /3800 (with resistance)
Closing operating force / opening operating force		Kn	60/130
Allowable tension of terminal block	Horizontal longitudinal	N	2800
	Horizontal horizontal	N	2400
	vertical direction	N	1000

Insulation level of circuit breaker

Item		Unit	technical parameter
SF6 gas zero gauge pressure 5min Power frequency withstand voltage (effective value)	One phase incoming and outgoing line	KV	476
	Relatively	KV	476
Rated short-time power frequency withstand voltage 1min (effective value)	One phase incoming and outgoing line	KV	740(+315)
	Phase to ground and phase to phase	KV	740
Rated lightning impulse withstand voltage 1.2/50μS (peak)	One phase incoming and outgoing line	KV	1675(+450)
	Phase to ground and phase to phase	KV	1675
Rated operating impulse withstand voltage 250/2500μS (peak)	One phase incoming and outgoing line	KV	1175(+450)
	Interphase	KV	1950
	Relatively	KV	1300