NGH7-12 Eco-Friendly GIS for Secondary Distribution
An Ring Main Unit designed, manufactured and fully type-tested according to IEC 62271-200, NGH7 is widely used in power distribution systems, such as utilities, industries, buildings and new energy power stations.
An Ring Main Unit designed, manufactured and fully type-tested according to IEC 62271-200, NGH7 is widely used in power distribution systems, such as utilities, industries, buildings and new energy power stations.
- Dry air gas-insulated switchgear
- For secondary distribution
- 12kV, 630A, 25kA
Customer Benifits:
- Environmentally friendly
- Safe & Reliable
- Maintenance free
- Small in size
- Easy to install
- Smart function
Technical Specifications
NGH7-12
NGH7-24
NGH7-24 2.0
NGH-12(Z)
NGH-24(Z)
NGH-40.5(Z)
Type of Switch
CB
CB, LBS
CB, LBS, LBS+Fuse
CB
CB
CB
Rated Voltage (kV)
12
24
24
12
24
40.5
Rated Current (A)
630
630
630
1250~3150
1250
1250~2500
Rated Frequency (Hz)
50
50/60
50/60
50
50/60
50
Withstand Voltage (kV)
42/75
65/125
50/125
42/75
65/125
95/185
Short Time Current (kA/s)
20/4
21/3
21/3
31.5, 40/4
25/4
31.5/4
Peak Withstand Current (kA)
50
54.6
54.6
80, 100
65
80
IAC (kA/s)
AFLR 20/0.5
AFL 21/1
AFLR 21/1
AFLR 31.5, 40/1
AFLR 25/1
AFLR 31.5/1
Rated / Min. Gas Pressure(MPa, Rel.)
0.02 / 0
0.05 / 0.03
0.08 / 0.06
0.02 / 0
0.05 / 0.025
0.05 / 0.02
Altitude (m)
≤4500
≤3000
≤1500
≤4500
≤4500
≤4500
Dimension (mm, W*D*H)
420*850*2000
450/400*845*1635
(without LV box)
420/400*780*1400
(without LV box)
600*1400*2400
/800*1700*2400
600*1230*2250
800/1000*2263*2550
Applicable Standards
IEC, GB
Applications
Power distribution
Renewable energy
Infrastructure
Data center
Industrial electricity
Customer Value
Eco-Friendly
Dry air fully replaces SF6 with GWP=0. Eliminates greenhouse gas emissions and removes environmental compliance risks, supporting your carbon neutrality goals.
Highly Reliable
Optimized insulation design ensures stable switching and insulation performance even at gas leakage conditions at rated voltage.
Convenient & Flexible
Modular compartment construction enables plugand-play onsite assembly with no gas handling required, speeding up installation and allowing easy future expansion.
Safe
Comprehensive mechanical interlocking design effectively avoids the adverse impact on the system caused by misoperation.
Maintenance Free
All active and switching parts are fully sealed and insulated, no maintenance cycle needed, saving maintenance time and cost.
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