Welcome to our websites!
Tel/Whatsapp/Wechat: +86-15968734813, Email: alice@cnhighvolt.com

LW8-40.5 OUTDOOR HIGH VOLTAGE SULFUR HEXAFLUORIDE CIRCUIT BREAKER (TANK TYPE)

Short Description:

LW8-40.5 outdoor high voltage AC tank type sulfur hexafluoride circuit breaker is a new type of self-powered arcextinguishing  structure developed by our company. It is equipped with CT20-II type spring operating mechanism. The product has reliable performance,stable operation and three-pole mechanical linkage operation. With  its own current transformer, compact structure, save area. It has the  ability to open and disconnect capacitive loads and inductive load   currents, can be used simultaneously as a special circuit breaker for  reactive power compensation


Product Detail

Product Tags

Product Overview

   LW8-40.5 series sulfur hexafluoride circuit breakers are three-phase AC 50Hz outdoor high voltage electrical equipment, applicable to 40.5 kV transmission and distribution system controlling and protection, also for contacting circuit breaker and open-close capacitor bank. Product breaking performance is excellent, using compressed air interrupter, long electrical life, at rated voltage 40 kV short-circuit current continuous on-off up to 21 times without maintenance; Two current transformers per unit, for users choosing. The product adopts a new MKZ SF6 pointer density meter, pressure gauge readings arenot affected by temperature changes, easy to use
   CT14 spring mechanism is used in this product
   The circuit breaker contains floor tank type and porcelain column type. Porcelain column type has two kinds of arrangement,parallel arrangement and elevated T frame (middle type) arrangement

Working Environment

1.The altitude:1000m;2000m;3000m;

2.The environment temperature):-30℃ ~+40℃

3.Pollution level:II、III、IV

Main Technical Parameters

 No.

Item

Unit

Data

 

 

1

Rated voltage

kV

40.5

Rated insulation level

 Lightning impact withstand voltage (full crest value)

kV

185

 Power frequency withstand voltage (1min)

kV

95

2

Rated current

A

1600 2000

3

Mechanical life

time

3000

4

 

Rated pressure of sulphur hexafluoride gas (gauge pressure at 20℃ )

MPA

0.50

5

 

Alarm pressure/minimum functional pressure (gauge pressure at 20℃ )

MPA

0.47/0.45

6

Rated short circuit switching current

kA

25

31.5

7

 Rated short-circuit closing current (peak)

KA

63

80

8

 

Rated Short-Time withstand current (thermal stable current)

kA

25

31.5

9

 

Rated Short-Time withstand current (thermal stable current)

kA

60

80

10

Rated short circuit switching current

kA

63

8

11

The cumulative number of switching times under rated short-circuit switching

Times

15

10

12

Rated short circuit duration

S

4

13

Closing time (at rated operating voltage)

S

≤ 0.1

14

Switching time (at rated operating voltage)

S

≤ 0.06

15

Rated order of operation

 

C-0.3s-CO-180s-CO

 16

Rated opening and closing monomial capacitor bank current

 

A

 

400

17

 In leakage

years

≤1

18

Water content of sulfur hexafluoride gas (V/V)

 

≤ 150×10-9

 

 

19

CT14 spring operating mechanism with rated operating voltage

 

 

Closing coil, opening coil voltage

V

AC:220 380 DC:48 110 220

Energy storage motor voltage

V

AC:220 380 DC:110 220

20

Sulfur hexafluoride gas weight

KG

8

21

Weight of circuit breaker (including operating mechanism)

KG

1400

 

Appearance And Installation Dimensions

bacf8665


  • Previous:
  • Next:

  • Write your message here and send it to us