Gas-insulated switchgear XGN15-12

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Description

 

XGN15-12 series of unit- type metal-enclosed switchgear takes MFLN36-12 type SF6 load break switch as the main switch, and the entire cabinet is air-insulated, suitable for distribution automatic, compact and expandable metal-enclosed loop network switchgear. It has features of simple structure, flexible operation, reliable interlocking, and easy installation and so on. It can provide satisfactory technical solutions for a variety of different applications and different user requirements, which comply, to IEC 62271.

Load break switch and circuit breaker can be manually or electrically operated, and can achieve power distribution automation when being equipped with optional electric operating mechanism, PT, CT, FTU and communication devices.

Model description:

Gas-insulated switchgear XGN15-12-1

Normal operating conditions:

  1. Ambient temperature: upper limit + 40 ℃, lower limit — 25 ℃;
  2. Altitude: not more than 2000m;
  3. Relative temperature: daily average value is not more than 95%; monthly average value is not more than 90%;
  4. The surrounding air is not obviously polluted by corrosive gas or combustible gas, water vapor, etc.
  5. No frequent violent vibration.

The switchgear body is riveted after being processed by numerical control machine tool. The protection level reaches IP3X, and it has reliable mechanical interlock and disoperation prevention functions. This product is small in size, light in weight, beautiful in appearance, easy to operate, long in life, high in parameter, pollution-free and less in maintenance.

Parameters

 

Main technical parameter:

No. Item Unit Parameter
1 Rated voltage kV 12
2 Rated lightning impulse withstand voltage Alternate and to ground kV 75
Fracture surface kV 85
3 One minute power frequency withstand voltage Alternate and to ground kV 42
Fracture surface kV 48
4 Rated frequency Hz 50/60
5 Rated current main bus-bar A 630 1250
branch bus-bar A 630
6  Rated short time withstand current major loop kA 25/2s
ground loop kA 20/2s
7 Rated peak withstand current kA 50
8 Transfer current A 1750
9 Protection level IP55
10 Load switch lifetime time 5000
11 Grounding switch lifetime time 2000

 

Outline and installation dimension

Gas-insulated switchgear XGN15-12-2

Width of circuit breaker panel mm 750
Other width of panel mm 375/500
Height mm 1600/1850
Depth mm 980
Height of LV case mm 450

Gas-insulated switchgear XGN15-12-3

Solutions

 

Product structure:

XGN15-12 (SF6) RMU is composed of the following four parts:

  1. Busbar room;
  2. Main switch (switch room);
  3. Cable room;
  4. Operating room (mechanism, interlocking mechanism and low-voltage control)

The whole switchgear can be divided into upper and lower unit. The upper unit includes bus room, load break switch, operating mechanism room and low-voltage room. The cable room of the lower unit and the upper unit can be assembled into an integral cabinet or separated. The equipment installed in the upper unit can be overhauled and reformed safely and conveniently.

Gas-insulated switchgear XGN15-12-4 Gas-insulated switchgear XGN15-12-5

1. Busbar room

The bus room is arranged on the upper part of the cabinet. The main bus wires are connected together in the bus room and run through the whole row of switchgear.

 

2. Switch room

A SF6 load break switch MFLN36-12 is installed in the switch room. The shell of the LBS is made of epoxy resin and filled with SF6 gas as the insulating medium. SF6 gas dosimeter or gas meter with alarm contact can be installed in the switch room according to the customer’s requirements.

 

3. Cable room

Cable room is mainly used for cable connection. Single core or three core cable can be connected by the simplest unshielded cable head, and the ample space can also accommodate the lightning arrester, CT and other components. According to the standard design, the cabinet door is equipped with observation window and safety interlock device. A cable clamp is sealed tightly on the bottom of the cable chamber.  The floor of the cable room and the front frame of the door can be removed for the convenience of cable installation.

 

4. Operating room include mechanism, interlocking mechanism and low-pressure control room.

The mechanism room with interlock also plays the role of controlling inventory. The room is equipped with spring operating mechanism and mechanical interlock device with position indicator, auxiliary contact, trip coil, emergency trip mechanism, capacitive live display, key lock and electric operating device. The space of low-voltage room is provided with control circuit, metering instrument and protection relay. The 750mm wide switchgear is equipped with two identical low-voltage rooms, which can be equipped with more accessories.

Gas-insulated switchgear XGN15-12-6

Our goal is to give customers defect-free and high-value XGN15-12 SF6 Fully Gas Insulated Compact Electric Switchgear (GIS) Ring Main Unit (RMU) for Medium Voltage on time and pursue customer satisfaction.

METTZ Group is an expert in the production of high-quality electrical equipment, specializing in the manufacturing of a complete set of transmission and distribution equipment within the 10-40.5kV range. The company is dedicated to providing reliable and stable products to its customers, including VCB, ACR, RMU, GIS, AIS, and LBS.

METTZ Group continuously introduces international advanced workmanship and equipment since its foundation, and widely cooperates and communicates with experts at home and abroad in technology. The company can supply custom OEM services such as Logo, custom size, or custom merchandise, etc., according to customer requirements.

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