SF6 Arc Resistant RMU are widely used in urban ring network power supply systems due to their small space occupation, long life, maintenance-free, safe and reliable characteristics, uses sulfur hexafluoride as the insulating medium, and is fully insulated and fully enclosed in a common box type. All high-voltage live parts are fully insulated and sealed, and the safety performance is higher from the outside of the switch cabinet.
Our company has obtained a complete set of standardized customized reports for Fit(XGN86)-12 SF6 ring network cabinets, including side expansion and top expansion. We has also obtained the standardization report of SF6 metal outer box (S304 stainless steel plate) and non-metal outer box (GRC)
1. Material of cabinet body: 2 mm aluminum zinc plate.
2. Including side expansion, top expansion two types.
3. Internal arc duration of 630A/20kV is 1S.
4. With load switch (C), load switch + fuse combination (F), circuit breaker (V) and other standard units. Achieve a diverse set of units, to meet the complex and diverse power supply and distribution designs in different areas. SF6 ring main unit widely used in urban commercial centers, high-rise buildings, underground substations, industrial concentration areas, airports, highways and other ring or radiation power supply systems, can also be used for terminal power supply, installed in box-type substation, outdoor box-type switch station(outdoor ring cabinet) and other devices.
5. The outer material of the ring cabinet can be configured according to user's requirement.
|
NO.
|
Item
|
Unit
|
Data
|
|
Load switch
|
Combination unit
|
Breaker
|
|
1
|
Rated Voltage
|
kV
|
12
|
|
2
|
Rated
frequency
|
Hz
|
50/60
|
|
3
|
Rated current
|
A
|
630
|
125
|
630
|
|
4
|
1 min Power frequency withstand voltage
|
Phase to earth and phase to phase
|
kV
|
42
|
|
Isolating
distance
|
48
|
|
5
|
Lightning impulse withstand voltage
|
Phase to earth and phase to phase
|
kV
|
75
|
|
Isolating distance
|
85
|
|
6
|
Thermal stable current (effective value)
|
Main circuit 4S
|
kA
|
20
|
|
Earthing
switch 2S
|
|
Earth circuit 4S
|
17.4
|
|
7
|
Dynamic stable current (peak)
|
Main circuit 4S
|
kA
|
50
|
|
Earthing
switch 2S
|
|
Earth circuit 4S
|
43.5
|
|
8
|
Rated short-circuit making current（peak）
|
kA
|
50
|
|
9
|
Rated breaking current of active load
|
A
|
630
|
|
|
|
10
|
Rated closed-loop breaking current
|
A
|
630
|
|
|
|
11
|
5% Rated breaking current of active load
|
A
|
31.5
|
|
|
|
12
|
Rated
cable-charging breaking current
|
A
|
10
|
|
|
|
13
|
Rated short-circuit breaking current
|
kA
|
|
31.5
|
20
|
|
14
|
Rated transfer
current
|
A
|
|
1750
|
|
|
15
|
Mechanical life
|
times
|
5000
|
5000
|
10000
|
|
16
|
SF6 rated
pressure（20℃ gauge pressure)
|
Mpa
|
0.3
|
|
17
|
SF6 leakage rate
|
year
|
≤0.05%
|
|
18
|
IP grade
|
|
gas tank IP67
|
|
19
|
Arc test
|
|
20kA/1s
|
1. Altitude: ≤4000m (the equipment is fully insulated and sealed, applicable to high altitude areas.When the equipment is running at an altitude higher than 1000m, please make special note for pressure adjustment during manufacturing).
2. Surrounding temperature: -25 ~ +40℃ (the highest average daily temperature does not exceed 35℃).
3. Relative humidity: daily average is no more than 95%, and monthly average is no more than 90%.
4. Wind speed: no more than 35m/s.
5. Earthquake intensity: 8 degrees
6. Pollution level: level 2
7. Installation site: Without fire, explosion or violent vibration, well-ventilated and non-corrosive gas.
8. Ground slope: no more than 3°.
Note: If the use environment exceeds the above scope.Please contact us.
