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XGN15-12 box type fixed ring switchgear

XGN15-12 box type fixed ring switchgear

  • XGN15-12(F), Or radiated power supply system, it is especially suitable for installation into prefabricated substations as the control and protection of the power system. This p...
  • Product overview
  • Model and features
  • Technical parameter
  • Overall dimension

Product overview

XGN15-12(F), Or radiated power supply system, it is especially suitable for installation into prefabricated substations as the control and protection of the power system. This product is a FLN36/48-12D sulfur hexafluoride load switch or FLRN36/48-12D load switch-fuse combination electrical appliance with an insulating shell inside. It has small size, light weight, easy operation, small operating force, and reliable interlocking. , maintenance-free and other characteristics, it is a new generation of high-voltage switchgear needed for urban power grid transformation and construction.
This product complies with GB3906 "3~35kV AC metal-enclosed switchgear, GB/T11022 "Common preparation and technical requirements for high-voltage switchgear and control equipment standards", IEC60298 "Rated voltage above 1KV and 52KV and below AC metal-cased switchgear and Control Equipment" and DL/T404 "Technical Conditions for Ordering Indoor AC High-voltage Switchgear" standards.

Model and features


Normal service conditions
 Ambient air temperature: -15°C~+40°C;
 Altitude: 1000m and below (plateau type is also available);
 Temperature and humidity conditions: daily average relative humidity <95%,
daily average The water vapor pressure does not exceed 2.2kPa; the monthly average phase-to-ground humidity is ≤90%, and
the monthly average water vapor pressure does not exceed 1.8kPa.
 Seismic intensity: no more than 8 degrees.
 Places without obvious pollution such as corrosive or flammable gases.

 Note: When the above normal usage conditions are exceeded, the user can negotiate with the company to resolve the problem.

Structural Features Panelstructure
 The cabinet is made of aluminum-zinc coated steel plates and then assembled. It has precise dimensions, beautiful appearance, small size, high strength, and high corrosion resistance.
 There are two types of SF6 load switch cabinets: XGN15-12(F) and XGN15-12(FR). The former is a load switch cabinet and the latter is a load switch-fuse combination electrical cabinet.
 The switch cabinet is divided into busbar room, switch room, cable room and mechanism instrument room.
 The main busbar can be expanded to both sides arbitrarily. It can be formed into a ring network power supply unit with three switches, or it can be expanded into a terminal substation with more than four switch cabinets. The cable room can be installed with current transformers, voltage transformers, lightning arresters and lower grounding switches. The cable head is high from the ground, making it easy to connect cables.
 The instrument room of the mechanism is equipped with an opening and closing mechanical indicator directly connected to the main shaft of the load switch, which can clearly display the closing, opening or grounding position of the load switch. The incoming end of the cable is equipped with a live display insulator, and there is a live display device on the instrument room of the mechanism, which can clearly show whether the cable room is live. In addition, the operating mechanism and the door have complete "five-proof" interlocking to ensure personal safety and prevent misoperation.
 The rear of the switch cabinet is equipped with a directional safety pressure relief device in case of internal failure.
 The switch cabinet is small in size, light in weight, easy to install and use, and has a protection level of IP3X.

Technical parameter


Main technical data oftheswitchgear

名称Description 单位Unit XGN15-12(F) XGN15-12(F·R)
额定电压Rated voltage kV 12 12
额定频率Rated frequency Hz 50 50
熔断器最大额定电流Maximum rated current of fuse A 125
主回路额定短时耐受电流/额定短路持续时间
Rated short-time withstand current of primary circuit/ Rated short-circuit duration
kA/s 20/3 20/3
额定预期短路开断电流
Rated prospecitve short-circuit breaking current
kA 31.5
lmin工频耐受电压 Rated power frequency withstand voltage(lm1n) 相间、相对地
Between phases and earth
kV 42 42

Across theisolating distance
kV 48 48
雷电冲击电压(峰 Rated lighting impulse withstand voltage 相间、相对地
Between phases and earth
kV 75 75

Across the isolatingdistance
kV 85 85
防护等级Degree of protection IP3X IP3X


The main technical parameters of the main switch (SF6 load switch and combination appliance) in the switch cabinet are shown in Table 2

名称Description 单位Unit FLN -12D/T630-20 FLRN36/48-12D/T125-31.5
接地路额定短时耐受电流
Rated short-time withstand current of earthingcircuit
kA 20 20
额定短路持续时间
Rated short-c1 cuitduration
s 2 2
额定峰值耐受电流
Rated peak withstand current
kA 50 50
额定短路关合电流
Rated short-circuit breaking current
kA 50 50
额定有功负载开断电流
Rated active load breaking current
A 630 630
额定闭环开断
Rated closed loop breaking current
A 630 630
额定缆充电电
Rated cablechargingbreakingcurrent
A 10 10
额定开断空载变压器容
Rated capacity of breaking non-load transformer
kVA 1250 1250
额定转移开断电流
Rated short-circuttransfercurrent
A - 1700
机械寿命
Mechanical endurance
times 5000 5000

Overall dimension