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Home/Medium Voltage Switchgear/Ring Main Unit (RMU)/HXGN15-12 High Voltage RMU Electrical Ring Main Unit HXGN15-12 High Voltage RMU Electrical Ring Main Unit
HXGN15-12 metal-clad ring main unit switchgear (intelligent type) applies to three phase AC system with rated voltage 12kV, rated frequency 5oHz, rated current 63oA and for ring network electricity supply and radiation terminal power supply that used as cable line sectionalizing, branch connection. It is equipped with SF6 gas insulating multiloop power unit and feeder terminal device FTU that imported from Korea. It has functions of remote signaling, telemetry, remote control and fault current detection. This device is mainly used as distribution automation system for city power supply load center and cable supply.
Specification of HXGN15-12 switchgear
Main Characteristics
1. The framework of cabinet is assembly type. It is stable and reliable with convenient assem-bly. It could be able to form ring net unit and other connection modes.
2. lt is with small size, light weight, small footprint, and easy installation.
3. The ring main unit has barbar room, switch room, control room that separately divided and in secure state. The cabinet and all components has reliable earthing connection to make sure the personal safety of operating and maintenance workers.
4. The ring main unit could be equipped with FN12-12D, FN25-12D load switch.
5. The mechanical interlock is advanced and reliable, which could satisfy the requirements of five-anti protection.
Working Environment
1. Air temperature: Maximum temperature: +40℃; Minimum temperature:-35℃
2. Humidity: Monthly average humidity 95%; Daily average humidity 90% .
3. Altitude above sea level: Maximum installation altitude: 2500m
4. Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
5. No frequent violent shake.
Parameters of HXGN15-12 switchgear
|
No.
|
Item
|
Unit
|
Data | |
|
1
|
Rated voltage
|
KV
|
12
|
|
|
2
|
Rated current
|
A
|
630
|
|
|
3
|
Rated frequency
|
Hz
|
50
|
|
|
4
|
Rated short time withstand current
|
KA
|
20
|
|
|
5
|
Rated short circuit duration
|
S
|
4
|
|
|
6
|
Rated withstand current (peak)
|
KA
|
50
|
|
|
7
|
Rated short circuit duration of grounding switch
|
S
|
4
|
|
|
8
|
Rated short withstand current (peak) of grounding switch
|
KA
|
50
|
|
|
9
|
Rated insulation level
|
1min power frequency withstand voltage (effective value)
|
KV
|
(phase-phase, phase-earth)42;
(fracture) 48
|
|
Lightning impulse withstand voltage (peak)
|
KV
|
phase-phase, phase-earth)75;
(fracture) 85
|
||
|
10
|
Rated SF6 pressure (20°C gage pressure)
|
Mpa
|
0.04
|
|
|
11
|
SF6 leakage rate per year
|
1%
|
||
|
12
|
Protection degree
|
IP3*
|
||
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