ZH3C-72.5 Environmentally Friendly Gas-Insulated Metal-Enclosed Switchgear 72.5kV, 3150A, 40kA
Negotiable
China
No. 2-2, 10A, No. 5 Road, Economic and Technological Development Zone, Tiexi District, Shenyang
024-85818396
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Product Introduction

The ZH3C-72.5 environmentally friendly GIS product utilizes vacuum interruption technology with clean air insulation, ensuring a Global Warming Potential (GWP) of 0.

The ZH3C-72.5 environmentally friendly GIS is composed of several standard functional modules such as the VCB circuit breaker, EDS isolation-grounding combination switch, VT voltage transformer, CT current transformer, BSG bushings, and BUS busbar. These modules share the same interface forms and dimensions, allowing for various combinations to meet the design and layout requirements of different substations. Each module is combined based on principles that facilitate future expansions and modifications, with gas-insulated isolators minimizing the mutual influence between adjacent modules.

The flexible modular design enables the substation to be easily optimized for design and layout, considering various conditions and factors such as the main circuit arrangement, incoming lines and cable routing, building dimensions, accessibility, reserved expansion space, and rapid fault elimination.

Technical Specifications

 

No.

Item

Unit

Parameter Value

1

Rated Voltage

kV

72.5

2

Rated Frequency

Hz

50/60

3

Rated Current

A

1250~3150

4

Rated Short-Circuit Breaking Current

kA

31.5/40

5

Rated Short-Circuit Making Current

kA

80~108

6

Total Breaking Time

ms

≤60

7

Breaker Closing Time

ms

≤100

8

Breaker Opening Time

ms

≤40

9

Breaker Non-Simultaneity

 

 

 

 - Opening

ms

≤2

 

 - Closing

ms

≤2

10

Rated Short-Time Withstand Current (RMS)

kA

40

11

Rated Short-Circuit Duration

s

3

12

Rated Peak Withstand Current (RMS)

kA

80~108

13

Rated Short-Time Power Frequency Withstand Voltage

 

 

 

 - To Ground

kV

160

 

 - Across Break

kV

160+42

14

Rated Lightning Impulse Withstand Voltage

 

 

 

 - To Ground

kV

380

 

 - Across Break

kV

380+60

15

Clean Air Rated Pressure

MPa

0.6

 

 - Gas Pressure (20℃, Gauge Pressure)

 

 

 

 - Alarm Pressure

MPa

0.56

16

Minimum Functional Pressure

MPa

0.55

17

Breaker Electrical Life

 

E2 Level

18

Rated Operating Sequence

 

O-0.3s-CO-180s-CO

19

Partial Discharge

 

 

 

 - Whole Compartment

pC

5

 

 - Insulation Components

pC

3

20

Compartment Weight

T

1.5~4

21

Annual Leakage Rate

%

≤0.1%