Product Description
Fixed AC Metal-enclosed Switchgear is a type of power distribution device used in medium-voltage power systems. It is suitable for three-phase AC power systems with a rated voltage of 3.6kV to 40.5kV and a rated frequency of 50Hz. This equipment is primarily used for receiving and distributing electrical energy in locations such as power plants, substations, industrial and mining enterprises, and high-rise buildings, as well as for controlling, protecting, and monitoring circuits.
GN27-35 Disconnector Technical Parameters
|
Model |
Rated Voltage(kV) |
Rated Current(A) |
Short-Time Withstand Current(4s) (kA) |
Peak Withstand Current(kA) |
|
GN27-35/630-20 |
40.5 |
630 |
20 |
50 |
|
GN27-35/1250-31.5 |
40.5 |
1250 |
31.5 |
80 |
|
GN27-35/2000-40 |
40.5 |
2000 |
40 |
90 |
P-C Type Surge Arrester Main Technical Parameters
|
Model |
Rated Voltage (kV) |
Rated Capacitance |
Resistance |
Power Frequency Dielectric Test Voltage 1min (kV) |
Weight (kg) |
Description |
|
LG36-0.05/100-1 |
36 |
0.5 |
100 |
100 |
22 |
|
|
LG36-0.1/100-1 |
36 |
0.1 |
100 |
100 |
22 |
|
|
LGQ36-0.05/100-1 |
36 |
0.05 |
100 |
100 |
27 |
Q Type |
|
LGQ36-0.1/100-1 |
36 |
0.05 |
100 |
100 |
27 |
Q Type |
|
LG36-0.5/300-1 |
36 |
0.05 |
300 |
300 |
27 |
|
|
LG36-0.05/30-1 |
36 |
0.05 |
300 |
300 |
27 |
Q Type |
Advantages
- The Fixed AC Metal-enclosed Switchgear features a rugged cabinet frame fabricated from welded angle steel or assembled from C-section and G-section profiles.
- The switchgear permits maintenance from both sides.
- The compartmentalized design with automatic shutter systems protects operators from accessing live parts.
- Fixed-type design offers lower initial cost compared to withdrawable alternatives.
Applications
- Auxiliary power distribution and generator circuits in thermal and hydro plants.
- Feeder circuits and transformer protection in 12kV distribution networks.
- Main receiving and distribution for factories,mines,and manufacturing plants.
Frequently Asked Questions
Q1: What is fixed AC metal-enclosed switchgear?
A: It is a type of medium voltage power distribution gear where all the primary electrical components are permanently installed inside a common metal enclosure.Unlike withdrawable designs where circuit breakers slide out on carriages,fixed switchgear needs tools if you want to remove anything,but the trade off is simpler construction and a lower price tag.
Q2: What are the environmental limits?
A: For standard operation,you are looking at ambient temperatures from minus 15 degrees Celsius up to 40 degrees,altitude no higher than 1000 meters,and daily humidity not exceeding 95 percent.If you need to go higher,high altitude versions are available up to 3000 meters.Seismic rating goes up to magnitude 8.
Q3: What maintenance is required?
A: Annual checks are pretty straightforward.You want to inspect contact wear on the disconnects,verify interlock function,clean the insulators,and lubricate the moving parts.Vacuum breakers are nice because they do not need any internal maintenance on the interrupters themselves.
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