Home > Ring Main Units > Ring Main Units
Products Catalogue
- Insulating Paper
- Composite Insulating Material
- Insulation Film
- Glass Fiber Sleeving
- Tape
- Laminated Products
- Mica Products
- Transformer Insulating parts
- Transformer Spare Parts
- Current Transformer
- Bimetal thermometer
- Dehydration of respite
- Hollow Porcelain Insulators
- Transformer bushings
- Magnetic wire
- Cable / Cable accessories
- Electric Motor Spare Parts
- Ring Main Units
Tags
Features:
1.Flexible
1)Modular structure,as many combinations/panels as possible
2)Both left and right sides extensible
3)Field assembling enabled
4)Motorization retrofit enabled
2.Safety
1)Single inspection window fitted for checking switch status
2)Multiple interlocking functions to prevent fault operation
3)Protection level of cabinet is IP67
4)Pressure relief device to guarantee worker and equipment safety
3.Compact and Modular Design
1)Dimensions for 12kV standard 3 units is 1000*1380*720
2)Modular design enables field assembling, especially good for application at location with small entrances: mining industry, wind farm, compact secondary substation
4.Applications under extreme conditions
1)Ambient temperature:-45℃ to 55 ℃
2)Altitude: ≤4000m
3)Humidity: daily average≤95% monthly average≤90%
4)Earthquake intensity < 8
Main Technical Data
V---Circuit breaker cabinet
C---Load break switch cabinet
F---Load break switch and fuse combination
Item |
Unit |
Technical Data |
|||
|
C |
F |
V |
||
Rated Voltage |
kV |
12(24) |
|||
Rated Current |
A |
630 |
125 |
630/1250 |
|
Rated Frequency |
Hz |
50 |
|||
Rated power frequency withstand voltage 1 min |
Phase to phase Phase to ground |
kV |
42(65) |
||
Across Open Contacts |
kV |
48(79) |
|||
Rated lightning impulse withstand voltage |
Phase to phase Phase to ground |
kV |
75(125) |
||
Across Open Contacts |
kV |
85(145) |
|||
Thermal stable current (RMS) |
Main circuit |
kA |
20 |
/ |
20/25 |
Earthing switch |
20 |
/ |
20/25 |
||
Earth return |
17.4 |
/ |
17.4/21.8 |
||
Stable current(peak) |
Main circuit |
kA |
50 |
/ |
50/63 |
Earthing switch |
50 |
/ |
50/63 |
||
Earth return |
43.5 |
/ |
43.5/54.8 |
||
Rated short circuit closing current (peak) |
Load switch |
kA |
50 |
/ |
50/63 |
Earthing switch |
50 |
/ |
50/63 |
||
Rated short-circuit breaking current |
|
kA |
/ |
31.5 |
20/25 |
Mechanical life |
Circuit breaker |
times |
/ |
20000 |
|
Load switch |
5000 |
/ |
|||
Disconnector |
3000 |
3000 |