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Such as 110KV sulfur hexafluoride circuit breaker

NegotiableUpdate on 12/13
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Overview

Such as 110KV sulfur hexafluoride circuit breaker; LW36-126 open combination electrical appliance, with a * * * structure and excellent performance, meets the requirements of GB and IEC related standards for various technical parameters. This product has the characteristics of compact structure and small footprint of enclosed composite electrical appliances, as well as the advantages of cheap price and convenient maintenance of open electrical appliances. Its footprint is reduced by about 60% compared to conventional power stations, making it particularly suitable for use in urban networks, mountainous areas, and industrial and mining enterprise substations.

Product Details

Such as 110KV sulfur hexafluoride circuit breaker

Compared with similar products abroad, this product can better meet the needs of the domestic electricity market. Our company can not only design flexible and diverse layout forms according to the different needs of users, but also implement the general contracting of primary equipment (including interval support busbars, towers, etc.) and secondary equipment for the entire substation.

LW36-126 type open combination electrical appliance, with a * * * structure and excellent performance, meets the requirements of GB and IEC related standards for various technical parameters. This product has the characteristics of compact structure and small footprint of enclosed composite electrical appliances, as well as the advantages of cheap price and convenient maintenance of open electrical appliances. Its footprint is reduced by about 60% compared to conventional power stations, making it particularly suitable for use in urban networks, mountainous areas, and industrial and mining enterprise substations.

Structure Introduction
This product has two layout forms, indoor and outdoor, each of which can be divided into circuit breaker interval and measurement and protection interval. Each interval consists of two main parts: a fixed part and a movable part. The fixed parts include isolation plugs, grounding switches, and local operation control cabinets. The movable part is a movable electrical module that assembles different electrical components together based on a small car. The movable part of the circuit breaker interval is composed of self powered SF6 circuit breakers, current transformers, and isolation plugs. The movable part of the measurement and protection interval is composed of voltage transformers, lightning arresters, and isolation plugs.
Such as 110KV sulfur hexafluoride circuit breaker

Main Features
The circuit breaker is a new generation of self powered SF6 circuit breaker, equipped with a spring operated mechanism.
The structural form of the circuit breaker interval and the measurement and protection interval is consistent.
Both the car and the grounding switch are equipped with electric operating mechanisms, including circuit breakers, which can be operated locally in the control cabinet.
The secondary wiring from the on-site control cabinet to each component is plug-in, and an intelligent control cabinet can also be provided to achieve unmanned operation.
The one-time wiring method is flexible and does not affect the user's continuous power supply during maintenance.
The overall layout is simple, beautiful, and suitable for both indoor and outdoor use.

Usage environment
Environmental temperature: -30 ℃~+40 ℃
Wind pressure: ≤ 700Pa
Altitude: ≤ 3000m
Seismic intensity: ≤ 8 degrees
Air pollution level: Level III
Ice thickness: 10mm

Ordering Instructions
The layout of the product is indoor or outdoor, as well as the installation method.
Rated voltage, rated current, and short-circuit breaking current.
Models, names, current ratios, and electrical parameters of current transformers, voltage transformers, and lightning arresters
Voltage ratio, number of secondary coils, accuracy level, and rated output.
Number and operation mode of grounding switches.
Are towers and interval support busbars configured for outdoor layout.
Other special requirements of the user can be negotiated.

LW36-126 General Technical Parameters

serial number

project

unit

Technical Specifications

1

rated voltage

KV

126

2

rated frequency

Hz

50

3

rated current

A

3150

4

Rated short-circuit breaking current

short-circuit current

kA

40

DC component

40%

5

Rated short-circuit duration

s

4

6

Rated short-time withstand current

kA

40

7

Rated short-circuit closing current (peak)

kA

100

8

Rated peak withstand current

100

9

Rated 1-minute power frequency withstand voltage (effective value)

Relative and alternating

kV

230

fracture gap

265

10

Rated lightning impulse withstand voltage (peak)

Relative and alternating

550

fracture gap

630

11

5-minute zero gauge pressure withstand (effective value)

Between fracture surfaces, relative to ground

95

12

Rated out of step breaking current

kA

Ie×25%

13

Near area fault breaking current

Ie×90%,Ie×75%

14

Rated line charging interruption current

A

50

15

Rated operating sequence

O-0.3s-CO-180s-CO

16

Initial polar coefficient

1.5

17

Closing time

ms

≤135

18

Opening time

≤32

19

Cut off time

≤60

20

Split time

60

21

Synchronization of opening and closing

2

22

Synchronization of closing

3

23

Rated SF6 gas pressure (20 ℃)

Mpa

0.5

24

Annual SF6 gas leakage rate

≤0.5%

25

Gas moisture content

ppm(v/v)

≤150

26

Radio interference level

μV

≤2500

27

mechanical life

Next time

6000

28

Quality of each circuit breaker

kg

1400

29

Quality of SF6 gas filled into each unit

6

30

Main circuit resistance of each pole

μ Omega

40