LW 40.5KV Outdoor GCB

brief introduction

ROCKWILL developed LW-33/40.5 series of outdoor SF6 Gas insulated circuit breakers using modern processing technology and computer-aided design techniques, combined with the latest generation of spring bodies and the advantages of a permanent institution/housing. Its pursuit of high reliability, easy to maintain design concepts that create a generation of superior product, is the best and most reliable electric power system solution.
ROCKWILL all series switches meet the following criteria: ANSI/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.

deigned to switch!

No

Item

Unit

Parameter

1.

Rated Voltage

KV

40.5

2.

Rated Frequency

Hz

50/60

3.

Rated Current

A

1250, .... 4000

4.

1min Power Frequency Withstand Voltage

KV

95/118

5.

Lighting impulse Withstand Voltage

KV

215

6.

10min Power Frequency Voltage at Zero Gas Pressure

KV

40.5

7.

Rated Short Circuit Breaking Current(Peak)

KA

63,.80

8.

Rated Short Breaking Current

KA

25 .... 31.5

9.

Rated Out-of-Phase Breaking Current

KA

8/10

10.

Rated Cable(line) Charging Breaking Current

A

31.5

11.

Rated Gas Pressure

Mpa

0.4/0.45 (Higher Current)

12.

Main Loop Resistence

μΩ

≤80

13.

Operation Sequence

O-0.3s-CO-180s-CO

14.

SF6 Gas Leakage Rate (Per Year)

%

≤1

15.

Moisture Content (V/V)

ppm

≤150

16.

Creepage Distance

Across The Open Contacts

mm

1256

To Earth

mm

1256

18.

Mechanical Life

Times

10,000

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