Sf6 Circuit Breaker Lw3

Overview

Basic Info.

Model NO.	LW3-12(D)
Poles Number	3
Type	Circuit Breaker
Function	Circuit-Breaker Failure Protection
Certification	ISO9001-2000, CCC
Transport Package	Wooden Case or Pallet
Trademark	YIFA
Origin	China
HS Code	8535210000
Production Capacity	5000PCS/Year

Product Description

Product Photos

Product Description

LW3-12(D) II III IV The latest design of comdictor pole,protecting insulator insulator from cracking;
Perfert protection functions against over-current time delay,short-circuit quick breaking or no-voltage;
Incerase of transformer type, single-protection transformer and secondary transformer not only have function of measurement,but also have protection functions,it saves not only have function of measurement cost for power stations;
Increase of obvious gaps,with anti-misoperation interlocking operation;
Adoption of pressure-sensitive elements, it is able to rede the air pressure digits remotely.

Product Parameters

Main Technical Parameters

Item			Unit	Parameter
Rated voltage			KV	12
Max operation voltage			KV	12
Related insulation level(when pressure of SF6 gas om circuit breaker is 0.25Mpa,at 20ºC)		Thunder impulse withstand voltage(full-wave)	KV	75
		Line frequency withstand voltage)	KV	42
		Rainfall withstand voltage test	KV	34
Insulation level at zero gauge pressure(max phase voltage 5min)			KV	9
Rated current			A	400		630
Rated stort circuit dropt current			KV	12.5	16	31.5
Breaking current at zero gauge pressure			A	630		1250
Breaking times at reted short-circuit current			times	20
Rated opreating sequebce typr I				O-180s-CO-180s-CO
Rated opreating sequebce typr II				O-0.5s-CO-180s-CO
Rated close current (peak)			KA	16	20	31.5
Rated peak withstand current			KA	16	20	31.5
Rated thermal stability time			S		4
Rated short-times withstand current			KA	12.5	20	31.5
Inherent closing time (tyepII)			s	≤0.06
Inherent closing time(type II) type I			s	≥0.06
Inherent closing time(type II) type II			s	≤0.04
Rated working pressure			mpa	0.35
Min working pressure			mpa	0.52
Annual gas leakage rate			%	≤1
Mechanical life			times	2000
weight typeI			kg	122
weight type II			kg	130

Certifications

Packaging & Shipping

Company Profile

FAQ

1
Q: Are you manufacturer?
A: Yes, we are manufacturer. Our factory is in Wenzhou City, Zhejiang Province.
2
Q: Can I get guarantee of products?
A: Yes, every product is 1 year quality warrantee under customer correct using the products.
3
Q: Do you have any Certificate?
A: Yes. Each of our unit has CCC certificate. All the electric parts with CE certificate, If you need any other Certificate, we can help you to get it.
4
Q: How to buy it? What about the delivery?
A: Please contact me by email or online, let me know your situation, I will give you professional solution.We have shipping agent can choosing the cheapest and fastest delivery. FOB,CIF, C&F or EXW are no problem for us.
5
Q: How can I pay you?
A: T/T, L/C is very well used.
6
Q: What about the production?
A: Produce time is 4~6weeks.
7
Q: Could you offer some spare parts?
A: Yes, no problem.
8
Q: What about the maintenance?
A: All the goods past the test, maintenance is very easy.

Our Service

1.quick response in before sales period help you got order.
2.excellent service in production time let you know each step we made.
3.reliable quality solve you after sale headache.
4.long period quality warranty ensure you can buy without hesitate.
2.1, For transformer whose rated capacity is 500 KVA and below, the load loss value above the slash in the table is suitable for Dyn11 or Yzn11 connection groups, and that below the slash for YynO connection groups.
2.2, Transformers whose HV tapping range is ±2×2.5 may be provided, if need be.
2.3, Transformers whose LV is 0.69KV may be provided, if need be.
2.4, Users may choose other loss values as they need.
2.5, Due to product upgrading and changes to the external dimensions and products in the table, please refer to the external dimensions provided at the time of ordering.