Zw7a-40.5 Outdoor High Voltage AC Vacuum Electrical Circuit Breaker

Product Description

ntroduction
  The LwO-252/4000-50 self-extinction AC circuitbreaker which is outdoortype finds its universalrange of applications forthe electrical system with
elevation not greaterthan 20oom,ambient temperature notlowerthan-3oC,dirtiness grade not higherthan Iv,alternating current 5oHz and the maximum
voltage 126kv.It is used for cutting the rated current,malfunction current or switching the circuitry,to control and protect the electrical system,anditcan
also be used for connecting with the circuit breaker.
  The gas ofthe sF6 is employed as the arc-extinguishing medium and the dielectric material.The self-extinction technology and the new-type spring
operating mechanism are introduced in the sF6 circuitbreaker.Thus the circuit breakerhas good qualities with long electricallife,lowoperationpower
lowernoise,high reliability,simple structure,small and long overhaulperiods.lt can fully replace the import same type one.
Characerstcosucure
The breaker introduces the three-phase porcelain-pole with single interrupter structure. A spring operating mechanism is suplied and the mechanicalaction ofthe three-phase is inner connected. The gas ofthe SF6 is connected in the three-phase pole parts.A density controller with temperaturecompensation is used to monitor the gas of the SF6. Because of the sell-exincion arc control principle and optimized design, it improves the efficiencyofmechanism andreduces the operating power
Excellent breaking performance and long electrical life.
High mechanism reliability and can be operated frequently.
Because of the high insulation intensity and excellent contact movement,the breaking capacity current willnot re-burn
The circuit breakerhas high outerinsulation level and ratio creepage distance is greaterthan.so ithas excellentperformance of resisting the fith and the earthquake,it is also can be operated safely under the environment with atrocious weather.
High carrying abiity: ithas high capability margin as the temperature of each contact rises whenitis undertemperature risetestinthe circut(1.2times f4000A)
The appearance ofthe breakeris compact,and the instalation and debugging is very easy. The maintenance is alsovery convenient

Product Parameters

1)Main technical data of breaker
No.	Name			Unit	Value
1	Rated voltage				252
2	Rated power frequency withstand voltage(1min)		To earth	kV	460
			Betweeninterrupter		460+146
3	Rated thunder impulse withstand voltage		To earth		1050
			Between interrupter		1050+206
4	Rated frequency			Hz	50
5	Rated current			A	4000
6	Amplitude factor				1.3
7	Rated shor-circuit breaking current			kA	50
8	Rated short-circuit making current(peak)			kA	125
9	Rated short-circuit with stand current			kA	50
10	Rated peak value withstand current				125
11	Rated short-circuit duration			s	3
12	Rated out-of-phase breaking current			kA	12.5
13	Breaking current of close-in fault			kA	90%lk,75%1k
14	Rated line-charging breaking current			A	200
15	Operating sequence				O-0.3s-CO-180s-CO
16	Resistance ofthe main circuit			μΩ	≤55
17	Rated gauge pressure of SF6(20ºC)			Mpa	0.6
18	Minimum functional gauge pressure(20ºC)			Mpa	0.55±0.015/0.50±0.015
19	Annual leakage rate of SF6				≤0.5%
20	Amount of water ofSF6(V/V)			ppm	≤150
21	Mechanical life			Next time	10000
22	Electrical level of radio interference			μV	<500
23	Creepage distance	Between interrupter		mm	≥8660
		To earth			≥6900
24	Each filled with SF6 gas weight			kg	24
25	Weight per breaker			kg	1500

 

 

 

 

Packaging Details:  Standard export packing box

Port: Ningbo Shanghai  (Customers can specify the port)

Lead Time: 7-15 days

sales unit: single product

 

 

 

 

 

 

When placing order, please provide the following technical parameters

1. kV rated voltage:

2. rated voltage;

3. Combination of three levels, accurate phase and accurate;

4, rated output, and the corresponding accurate level (VA).

Other Instrument Transformer

    Other than this model we proudly offer a diverse array of other instrument transformers. Our extensive selection caters to the varied needs of our esteemed clientele, ensuring every customer finds the ideal solution for their specific requirements, blending innovation with reliability.

Company Profile

is a professional manufacturer of high and low voltage switch transmission and distribution equipment and high and low voltage electrical components, the production of fully insulated fully sealed inflatable cabinets, intelligent solid insulated ring host units, outdoor high voltage cable branch box, box-type substation, etc Product quality is stable, reliable, It is deeply trusted and approved by the customers. Our proudly exports its high-quality productsto a myriad of global destinations, with a significant presence in diverse and dynamic countries such as Ghana, Gambia, Ethiopia, the Philippines, South Korea, Bangladesh, Australia, Pakistan, Azerbaijan, Myanmar, and beyond. Our 11kV Current Transformer with 50Hz Frequency for Indoor Use has consistently garnered rave reviews for its impeccable quality and outstanding performance.

Our dedicated team excels in crafting the most cost-effective and innovative power solutions, tailored precisely for our clients' needs. We actively contribute to the design of sophisticated substation and distribution plans and engage in competitive overseas bidding. We have triumphantly addressed and resolved intricate product requirements, ensuring our clients' utmost satisfaction.

PRODUCT WORKSHOP

Certifications

Our credentials are bolstered by the acclaimed ISO certification . Additionally, we possess an extensive collection of diverse type test reports that exemplify the unparalleled quality and reliability of our products.

Packaging & Shipping

Our dedicated packaging team excels in customizing exquisite wooden boxes, crafting distinctive logos, selecting vibrant colors, and designing unique labels tailored precisely to meet your requirements. We ensure that each product is impeccably packaged, safeguarding its integrity, and is dispatched with precision to reach you promptly.

FAQ

Q1: Are you a trading company or manufacturer ?
A1: We are a professional factory with 7 years experience in the field of high and low voltage power transformers, substation, vacuum circuit breaker, power equipment.

Q2: Do you accept customized serveice ?
A2: We offer OEM/ODM service , can print your logo on product . our professional technical and quotation team can provice a satisfied project according to your drawing and parameters .
 

Q3: What is your MOQ?
A3: Our MOQ is 1 piece.

Q4: How long is your delivery lead time ?
A4: It depends on your product requirement and quantity . Generally , 5~10 working days is avaliable .
 

Q5: How do you solve quality problems?
A5: Please porvide detailed photoes of quality problems. our technical and quality testing department will analyse.we will make asatisfied soluton within 2 days .

 

Q6: What is the price of shipping?
A6: Depending upon the port of delivery, prices varies.

Q7: What is your payment terms ?
A7: 30%T/T in adcance,70% before shipment . West union , L/C are also acceptable .