MV Switchgear

  • XGN20-12L/630-25 XGN20-12RL/125-315 Indoor AC High Voltage SF6 Ring Network Switching Equipment
  • XGN20-12L/630-25 XGN20-12RL/125-315 Indoor AC High Voltage SF6 Ring Network Switching Equipment

XGN20-12L/630-25 XGN20-12RL/125-315 Indoor AC High Voltage SF6 Ring Network Switching Equipment

XGN20-12L1630-25 and XGN20-12RL1125-315 indoor AC high voltage SF6 Ring Main Unit (hereafter "RMU" for short) is a new generation of metal enclosed switchgear with SF6 load switch as the main switch. The whole switchgear is air insulated, using sensor technology and latest relay protection components with a leading international design level.

XGN20-12L1630-25 and XGN20-12RL1125-315 indoor AC high voltage SF6 Ring Main Unit (hereafter “RMU” for short) is a new generation of metal enclosed switchgear with SF6 load switch as the main switch. The whole switchgear is air insulated, using sensor technology and latest relay protection components with a leading international design level.

XGN20-12V/1250-315 indoor voltage vacuum circuit breaker Ring Main Unit is applied with vacuum circuit breaker as the main switch. With simple and compact structure, flexible and convenient operation, reliable and effective interlock this kind of switchgear is mainly used for ring network power supply or dual radiation power supply system with three phases rated frequency of 50-60Hz and rated voltage of 12kV, as the circuit control and protection device.

Model specification

Working environment

  1. Height less than 1000m;
  2. Environment temperature:-25℃ ~+40℃;
    3.Atmosphere relative humidity: daly average no more than 95?monthly average no
    more than 90%.
  3. No serious polltion in the surrounding atmosphere,such as dust, smoke,corrosive combustible gas, gasoline sat lid etc. 5. Earthquake intensity: 8.

Main structure for looped network cabinet
RMU consists of busbar room,three position load switch room (or circuit breaker room),cable room. operation mechanism, interlock
mechanism and low-voltage control room and measurement.Each cabinet is separated by steel plate to avoid accident spreading. The
product complies with AC metal enclosed switchgear and control equipment referred to GB3906 3.6KV-40.5KV, and rated voltage 1KV52KV AC metal enclosed switchgear and control equipment referred to IEC62271-200.
1 Busbar room Busbar room is in the top of the switchgear in which the main busbars are connected together and through the whole switchgear. Main
busbars are horizontalarranged which are easlyto be extended.
2 Load switch room
There is a three-position load switch installed in this room.Its shellis made of epoxy resin with SF6 gas filed in as the arc extinction and
insulation medium. There are two transparent hot- stamped plastic end caps on the operating shaft terminals. The contact status can be
3 Cable room
The cable room is used to connecting cables. Single core or three-core cable can employ the simplest shielded cable head for connecting.
Meanwileit can be equpped witharrester,curnt transformer, vltagetrasformer and lower earthing swich, In terms o standard
designation, there is an observation window and safety interlock device. The bottom plate of the cable room is equipped with sealing cove
and suitable cable clamps with mountings. The door on the bottom plate of the cable room is removable,which is easily for cable installation
and remove.
4 Operation mechanism, interlock mechanism and low voltage control room
Low voltage control room with interlock also plays a role as a control panel, In the low voltage room, there are spring operation mechanism
and interlock mechanism with location indicatr,auxlary contact tippng col,emergency triping mechanism, and condenser charging
indicator,key lock and manual operating device.In addition,control circuit,meter instruments and protective relay can be fxed in the room

For more technical details, please check the attached catalogue.

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