| Introduction
Made by advanced technology, our indoor 12kV/24kV medium voltage Air-insulated ring main unit features stable performance, safety and reliability. The air-insulated ring main unit comes in full range of specifications, and is mainly used as a monitor and protector by electric power plants, industrial and mining enterprises, secondary substation power distribution systems, and large-scale high-voltage motors.
The XGN15 series air-insulated ring main unit for secondary distribution system consists of cabinet and handcart. The ring main unit is divided into several functional compartments by metal partitions:
1. Busbar room
2. Circuit breaker room
3. Cable room
4. Operating mechanism, interlocking mechanism, low voltage control room
As the user needs, the XGN15 type Air-insulated RMU can be equipped with SF6 load breaker switches, circuit breakers, relays, CT, VT, arrestors, earthing switches, disconnectors and overcurrent, short circuit fault indicators. Circuit breakers and disconnectors can implement mechanical interlock, and can meet remote control requirements.
The main switch of the medium voltage switchgear can be of the following brands:
1. Ampower-FLN36, FLN38 SF6 load break switch, Ampower-TAV series vacuum circuit breaker.
2. ABB-SFG load break switch, ABB-HD4 vacuum circuit breaker.
3. Schneider-SC6 load break switch.
Features
1. The Air-insulated ring main unit enclosure is made of new high quality aluminum-coated steel plate. The CNC machined enclosure has high precision and resistance to corrosion and oxidation.
2. Compact and simple structure, beautiful appearance, reasonable layout, lightweight and flexible assembly to meet different customer requirements.
3. Easy installation, flexible operation, with multiple reliable mechanical interlock and functions to prevent misuse.
4. Installation of electric mechanism, VT, CT, UPS, FTU, etc. is available for distribution automation
5. Mechanical and electrical operations are operated with the cabinet closed.
Technical Parameters
|
Rated voltage
|
kV
|
12
|
24
|
|
Rated frequency
|
Hz
|
50/60
|
50/60
|
|
Rated 1min power frequency withstand voltage
|
kV
|
42
|
65
|
|
Rated lightning impulse withstand voltage
|
kV
|
75
|
125
|
|
Rated current
|
main busbar
|
A
|
630
|
630
|
|
Branch busbar
|
A
|
630
|
630
|
|
Rated short time withstand current
|
main circuit
|
kA
|
20
|
20
|
|
earthing circuit
|
kA
|
20
|
17.4
|
|
Rated short-time withstand current duration
|
s
|
3
|
3
|
|
Rated peak withstand current
|
kA
|
50
|
50
|
|
Transfer current
|
A
|
1700
|
1200
|
|
Protection class
|
IP
|
IP3×
|
IP3×
|
|
Load switch mechanical life
|
times
|
＞ 5000
|
＞ 5000
|
|
Earthing switch mechanical life
|
times
|
＞ 2000
|
＞ 2000
|
|
Standard compliance
|
--
|
IEC62271-200, IEC60420, IEC60265, GB3906
|
More details please go to "Download" area to download the catalogs or contact us!
|
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