XGN15-12-SF6 RMU
XGN15-12-SF6 RMU

XGN15-12 Air Insulated SF6 Ring Main Unit (RMU)

Overview:
The RMU is generally divided into air insulated and SF6 insulated types. XGN15- 12 indoor fixed type SF6 RMU uses SF6 switches its main switch, and air insulation is used for the entire cabinet. It is suitable for 10kV distribution systems in factories, enterprises, residential districts, high-rise buildings, mines and ports. And it can be combined into ring network system used for power supply and distribution of three-phase AC ring network, biradial power supply unit or line terminal, receiving, distributing and controlling electric power, and protecting the safety operation of electrical equipment.
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XGN15-12 Air Insulated SF6 Ring Main Unit (RMU)

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Description

Product Summary

The RMU is generally divided into air insulated and SF6 insulated types. XGN15- 12 indoor fixed type SF6 RMU uses SF6 switches its main switch, and air insulation is used for the entire cabinet. It is suitable for 10kV distribution systems in factories, enterprises, residential districts, high-rise buildings, mines and ports. And it can be combined into ring network system used for power supply and distribution of three-phase AC ring network, biradial power supply unit or line terminal, receiving, distributing and controlling electric power, and protecting the safety operation of electrical equipment.

 

Environmental Conditions

  1. Ambient Temperature: No more than +40℃ and no less than – 15℃Average temperature is no more than +35℃ within 24 hours.

  2. Altitude: No more than 1000m.

  3. Relative Humidity: the average daily value is no more than 95%, the average monthly value is no more than 90%.

  4. Earthquake Intensity: No more than 8 degrees.

  5. Vapor pressure: average daily value is no more than 2.2kPa, average monthly value is no more than 1.8kPa.

  6. Installation locations without fire, explosion danger, serious pollution, chemical corrosion and violent vibration.

 

Product Features

  1. Modular design. Each unit module can be combined and extended arbitrarily, which is an easy to scheme combination, with a wide applicable range.

  2. The armored structure is used for the cabinet. And each compartment is separated from the other one by metal partition board.

  3. The corrosion resistant metal is used for the operating mechanism, and bearings of rotating parts are all self-lubricating bearings. The product will not be affected by the environment, thus exempting from regular maintenance.

  4. In order to adapt to the power grid automation and improve the reliability of power distribution, the electric drive mechanism, control terminal unit of power distribution network and other equipment can be added. Thus, it possesses telemetering, remote signaling and remote-control systems.

  5. The cabinet is compact design, using three- positions rotary load switch, which effectively reduces the number of components and parts, and realizes the five-preventions interlocking.

  6. The simulated single line diagram of primary circuit and analog display can display the internal conditions of the switch, so that the operation can be simple, correct and safe.

Parameter

Technical Data

No. Content Unit Value
1 Rated Voltage kV 12
2 Rated Frequency A 50/60
3 Rated Current Hz 630
4 Max. Rate Current of Fuse   125
5 Rated Short-circuit Breaking Current kA 31.5 (Fuse Group)
6 Rated Peak Withstand Current kA 50
7 Rated Short-time Withstand Current kA 20
8 Rated Short Circuit Making Current kA 50
9 Grounding Loop Rated Short-time Withstand Current (2s) kA 20
Rated Peak Withstand Current kA 50
10 Power Frequency Withstand Voltage in 1 min Phase, Earthed kV 42
  isolating Fracture kV 48
11 Lightning impulse Withstand Voltage (Peak) Phase, Earthed kV 75
  isolating Fracture kV 85
12 Rated Active Load Breaking Current A 630
13 Rated Closed Loop Breaking Current A 630
14 Rated Cable-charging Breaking Current A 10
15 Rated Transfer Current A 1750
16 SF6 Gas Pressure (Relative Pressure at 20℃) Mpa 0.045
17 lnternal Arc Duration Test (0.5s) kA 31.5
18 Mechanical Life Load Switch Times 5000
Earth Switch Times 2000
19 Degree of Protection IP IP4X
20 Operation - Manual/Electric

Schematic diagram of structure

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