Outdoor 3 Phase 40.5kv 400A 31.5ka Sf6 Circuit Breaker

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: LW8-40.5
• Arc-extinguishing Medium: SF6
• Installation: Fixed
• Structure: ACB
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: IEC
• Transport Package: Wooden Carton
• Specification: LW8-40.5
• Trademark: JECSANY
• Origin: China
• HS Code: 8504220000
• Production Capacity: 50000PCS/Years

Product Description

 The LW8-40.5AC HV SF6 breaker is kind of 3 phase AC 50HZ outdoor type breakers. The gas of the SF6 is employed as the arc-extinguishing medium and the dielectric material. It uses the structure of pneumatic arc-extinguishing chamber, and the breaking performance is excellent. It can be widely used in the electrical system whose rated voltage is 40.5kV to control the rated current and short-circuit current, connect the breaker and cut the current in capacitor banks. The current transformers inside are used for measuring and protecting the breaker. The LW8-40.5 breaker is the regenerate type of oil type breaker.

Model description

No	description	parameters
1	Rated voltage(kV)	40.5
2	Rated current(A)	2000
3	Rated short-circuit breaking current(kA)	31.5
4	Rated out-of-step breaking current(kA)	7.9
5	Rated opening and closing single capacitor bank current(A)	400
6	Rated operating sequence	O-0.3s-CO-180s-CO
7	SF6 gas rated inflation pressure(MPa)	0.45
8	Opening time(ms)	≤60
9	Closing time(ms)	≤100
10	Rigid speed(m/s)	3.4
11	Closing speed(m/s)	3.2
12	Circuit breaker weight(kg)	1400

 

 

 

 

Characteristic of structure

1. The breaker has the characteristics of small, outdoor type and with the console pot structure. It can match with CT14 spring operation mechanism. The spring operation mechanism associates with the main body, so the nstallation and debugging are convenient. Also it can be operated frequently and the mechanical life is not less than 3000times. 2. The breaker uses pneumatic arc-extinguish chamber, so the breaking performance is excellent. The 40kA accumulative breaking times can reach to 12. 3. The seal performance is reliable. The breaker uses imported sealed rubber insert. The dynamic seal uses structure of V shape grommet with spring pressure. The secondary terminal block is offered by the manufacturer as a set with the breaker to make sure that the annual leak rate of SF6 < 0.5%. 4. The iron core of the inner curent transformer is made of materials with the performance of crystallite (alloy) high conduction magnetic. So the accuracy class can reach up to 0.2 or 0.2s. 12pieces of current transformers can be used inside as the clients' requirement. And it will not be-burn when switch zero load for 50kms.

Q: Can we get a sample for reference? 
A: Yes, as long as the goods are conventional type, and you will be charged sample cost plus related shipping cost. Once you place an order to us, we can return or deduct the sample cost to you. 

Q: How to solve the quality problems after sales? 
A: Take photos of the quality problems and send to us for our checking and confirming, we will make a satisfied solution for you within 3 days. 

Q: What is the lead time? 
A: The lead time depends on the quantities ordered, generally within 25-35days upon the receipt of advance payment. 

Q: What is your terms of payment ?  
A: We accept West Union, T/T, irrevocable L/C at sight. Prefer T/T 30% deposit before production, the balance against copy of B/L. 

Q: Can you print our brand on the product?
A: Yes, of course, we also do OEM to print client's brand on the product.