Lw30-252t4000-50 Hv Sf6 Circuit Breaker

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Energy-storage Type
• Model NO.: LW30-252
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: SF6
• Installation: Fixed
• Structure: ACB
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker
• Certification: ISO9001-2000, GB
• Transport Package: Wooden Case
• Specification: 500*500*150mm
• Trademark: Meishu
• Origin: China
• Production Capacity: 10sets Per Month

Product Description

Service and Installation Conditions
Ambient temperature: -30ºC~+40ºC(special order - 50ºC~+40ºC)
Altitude:≤1000m(No limitation for special order)
Humidity:
Relative humidity at average per day (25ºC): ≤95%
Relative humidity at average per month:≤90%
Saturation vapour pressure: Daily average ≤ 2.2×10MPa
                            Monthly average ≤ 1.8×10MPa
Wind pressure: ≤ 700Pa
Icing thickness: 10mm
Seismic intensity:
Horizontal acceleration:≤ 0.3g
Vertical acceleration:≤ 0.15g
Sunshine intensity: 0.1w/cm (at wind velocity of 0.5m/s)
Max. daily temperature rise:  25ºC
Symmetrical Creepage distance:  31mm/kV
Protection class: IP54
Keep the breaker away from places with combustible, explosive, corrosive materials and violent vibrations
 

Serial number	Parameter		Unit	Value
1	Rated voltage		kV	252
2	lmin power frequency withstand voltage (RMS, dry test, wet test)	between fractures	kV	460+145
		Interpole or pole-to-earth	kV	460
3	Lightning impulse withstand voltage between fractures (peak value) (full wave 1.2/50 µs)	between fractures	kV	1050+ 200
		Interpole or pole-to-earth	kV	1050
4	When SF6 gas has zero gauge pressure, 5min power frequency withstand voltage (effective value)	between fractures	kV	220
		pole to earth	kV	220
5	Rated frequency		Hz	50
6	Rated current		A	4000
7	Rated short-circuit breaking current		kA	40
8	Rated short-time withstand current		kA	40
9	Rated peak withstand current		kA	100
10	Rated short duration		S	3
11	Rated short-circuit making current (peak value)		kA	100
12	Near zone fault breaking current		kA	30/36
13	Rated line charging breaking current		A	125
14	Rated out-of-step breaking current		kA	10
15	Cumulative breaking times at rated short-circuit breaking current		Second-rate	20
16	first opening factor			1.3
17	Nominal Operation Sequence			Points-0.3s-Combined points-180s-Combined points