Environmentally Friendly Gas-Insulated Metal-Enclosed Switchgear

Project

Unit

Circuit breaker

Load switch

Rated voltage

kV

12

12

Rated current

A

630

630

Rated frequency

HZ

50

50

Rated Insulation Level

1 min Power Frequency Withstand Voltage (Phase-to-Phase and Phase-to-Ground)

KV

42

42

1 min Power Frequency Withstand Voltage (Isolation Break)

48

48

Power Frequency Withstand Voltage (Control and Auxiliary Circuits)

2

2

Lightning impulse withstand voltage (phase-to-phase and phase-to-ground)

75

75

Lightning Impulse Withstand Voltage (Isolation Break)

85

85

Rated Short-Circuit Breaking Current

KA

20

Rated Short-Circuit Closing Current

KA

50

Rated Short-Time Withstand Current

KA

20

Rated Short-Circuit Duration

S

4

Rated Peak Withstand Current

KA

50

Transfer current

A

-

-

Rated Operating Sequence

-

0-0.3s-CO-180s-CO

Rated inflation pressure (gauge pressure at 20°C)

MPa

0.02

Minimum Functional Pressure (Gauge Pressure at 20°C)

MPa

0

Pressure relief device releases pressure (gauge pressure at 20°C)

MPa

0.16

Annual leakage rate

-

≤ 0.01%

Mechanical life

Second

10000

10000

Main circuit resistance

μΩ

≤150

≤150