Item:LW-40.5

LW -40.5 type outdoor SF6 circuit breaker

ROCKWILL developed LW□-40.5/72.5/126/145 series of outdoor SF6 gas circuit breaker using modern processing technology and computer-aided design

techniques, combined with the latest generation of spring bodies and the advantages of a permanent institution. Its pursuit of high reliability, easy to maintain design concepts to create ageneration of superior product, is the most reliable electric power system and the best option.

ROCKWILL all series switches meet the following criteria:

ANS/IEEE C37.60/IEC 62271-100(GB1984-2003 China standard)

GBT11022-1999 China Standard
IEC 60255-11
IEC 60255-21-1 Class I
IEC 60255-21-2 Class I
IEC 60255-21-3 Class I
IEC 60255-22-1 Class III
IEC 60255-22-2 Class IV
IEC 60255-22-3 Class III
IEC 60255-22-4 Class IV

Using of the enviroment:

Ambient temperature:-40℃~+40℃, the daily average temperature:25℃;

Altitude:≤ 3000m(in excess of the value of technical discussions with the divisionI);

Wind speed:35m/s;

Earthquake intensity: not more than 8 degrees;

Degree of ambient air contamination level not greater than:III level;

Daily average ambient air relative humidity≤95%, on average≤90%;

Saturated vapor pressure of daily mean values≤ 2.2*10^(-3)MPa, on average≤1.8*10^(-3)MPa;

More about the use of environment conditions, please consult with the manufacturer.

Main technical specifications:

 No.

Item

   Unit

Data

 1

Rated voltage

 KV

40.5

 2

Rated frequency

 Hz

50/60

 3

Rated current

 A

 1250

 4

1min power frequency withstand voltage

 KV

 95/118

 5

Lingthning impluse withstand voltage(peak value

 KV

215

 6

5 min power frequency voltage at zero gas pressure

 KV

40.5

 7

Rated short circuit breaking current

 KA

63,80

 8

Rated out-of-phase breaking current

 KA

 8/10

 9

 Rated cable(line) charging breaking current(peak)

 A

 31.5

 10

 Rated gas pressure

 MPa

0.4/0.15 (higher current)

 11

 Main loop resistance

 uΩ

≤80

 12

 Operation sequence

 O-0.3s-CO-180s-CO

13

 SF6 gas leakage rate(per year)

 %

≤1

 14

 Moisture content(V/V)

 ppm

≤150

 15

                                  Across the open comtacts

Creepage distance

                           To earth

 mm

 1256

1256

 16

Mechanical life

 times

10,000

Note: For short circuit breaking current & rated current is optional by clients.

 

1250a outdoor SF6 circuit breaker

Q:How to guarantee my order and payment:
A:Ezitown has Alibaba trade Assurance,100% refundable if any quality or delivery problem.

Q:How to return the goods if meet any problem

A:we have DHL and Fedex account for return goods.buyer no need to pay any shipping cost for returning. Can contact our salesman to operate.

Q:Why Ezitown price is competitive, and quality seems rather good ?

A:because we have been manufacturing more than 20 years, we know what price and Quality buyer can sell well in market.the wholeseller have suitable profits

Q:Can we order many items and make combine shipment.

A:we can combine many items,and deliver by courier/sea/land/air etc. pack well.

Q:Can I order the cabinet/enclosure/box and the wiring material from you or other supplier,you make wiring and assembly for us ?

A:we have egineering, wiring and assembly team for low voltage/medium voltage/high voltage/DC control .can make drawing and diagram to confirmation and proceed the assembly.we have unite nation project in regular assembly.

Q:How can I make our own brand for my order

A:we supply OEM service if order quantity meet the OEM MOQ , contact to know the exactly quantity for your item

Q:What is the delivery if I make payment

A:Almost all items we keep in stock.and we have many order every day , We need 1-3 working days to packing and make delivery.OEM packing will be longer time.

Q:Can we visit your factory or office ?A:we always welcome customer visit us, let me know the schedule, we will arrange.