Lw30-126 Sf6 Circuit Breaker

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Energy-storage Type
• Model NO.: LW30-126
• 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

LW30-126 SF6 Circuit Breaker is principle of self-energy arc extinguishing is adopted, and the breaking performance is excellent; the arcing time period, the electric life is long, and the operation noise is small. The SF6 gas with excellent insulation and arc extinguishing performance is used as the insulating arc extinguishing medium, which has no danger of burning and explosion, and can be used in densely populated areas. The circuit breaker is equipped with a spring operating mechanism, which is simple and compact, safe and reliable.

1. Before installing the SF6 pipeline, the pipeline must be thoroughly blown with dry nitrogen, and the sealing of all pipeline flanges should be good.

2. Before installing the air pipe, the pipe must be thoroughly blown with dry air. During the installation process, it is necessary to strictly prevent dust and sundries from falling into the pipe.

3. When filling with SF6 gas, measures should be taken to prevent the SF6 gas from getting wet.

4. After filling with SF6 gas, use a leak detector to check the pipe joints and flanges, and there must be no gas leakage.

5. In the compressed air system (nitrogen), all joints and flanges should be checked under the specified pressure, and no air leakage is allowed.

Working Environment:

1Installation method: side-mounted, middle-mounted

2Ambient air temperature: upper limit +40C, lower limit -30C; ;

3Altitude: ≤2000m (if the altitude needs to be increased, the rated insulation level should be increased accordingly);

4Wind pressure: no more than 700Pa (equivalent to wind speed of 34m/s);

5Amplitude: earthquake intensity 8 degrees;

6Contamination level: Class I;

7Maximum daily temperature difference: no more than 25C.
 

Serial number	Parameter		Unit	Value
				LW30-126W/T3150-40	LW30-126W/T4000-40(H)
1	Applicable environment			Applicability in normal alpine regions
2	Rated voltage		kV	110/126/145
3	Rated frequency		Hz	50(60)
4	Rated current		A	3150
5	first opening coefficient			1.5
6	Rated short-circuit breaking current Ik		kA	40 /31.5
7	Rated short-circuit making current (peak value)		kA	100/ 80
8	Rated short-circuit withstand current		kA	40 /31.5
9	Rated peak withstand current		kA	100/ 80
10	Rated short circuit duration		S	4
11	Rated out-of-step breaking current		kA	10 /8
12	Near zone fault breaking current		kA	90% IK, 75% IK
13	Rated line charging switching current		A	31.5
14	Nominal Operation Sequence			0-0.3S-C0-180S-C0
15	Main circuit resistance		µΩ	≤65
16	Mechanical life		Second-rate	6000 or 10000
17	radio interference level		µV	≤500
18	Creepage distance	between fractures	mm	3906/3150
		to the ground	kg	3906/3150

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