Medium Voltage Switchgear (Air Insulated Switchgear for Secondary Distribution System)

Medium Voltage Switchgear <small>(Air Insulated Switchgear for Secondary Distribution System) </small>
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Introduction

Made by advanced technology, our indoor medium voltage switchgear features stable performance, safety and reliability. The gas insulated switchgear 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 switchgear for secondary distribution system consists of cabinet and handcart. The cabinet 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 RMU can be equipped with SF6 load switches, circuit breakers, relays, CT, PT, 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. Tellhow-FLN36, FLN38 SF6 load switch, Tellhow-TZNH series vacuum circuit breaker.
2. ABB-SFG load switch, ABB-HD4 vacuum circuit breaker.
3. Schneider-SC6 load switch.
4. Imported ISM series permanent magnetic actuator vacuum circuit breaker.

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

Features
1. The switchgear 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, PT, CT, UPS, FTU, etc. is available for distribution automation
5. Mechanical and electrical operations are operated with the cabinet closed.

Multifunctional Modular Design
1. incoming cabinet with load switch
2. outgoing cabinet with load switch
3. metering cabinet with current transformers, voltage transformers, without measurement
4. breaker cabinet with vacuum circuit breakers, disconnector
5. lifting cabinet with surge arresters, voltage transformers, current transformers
6. PT cabinet with PT, CT and surge arresters
7. busbar cabinet with load switch, circuit breaker, disconnector, CT, PT
8. switchgear designed for different purposes according to customer requirements

Outline Dimensional Drawing
Dimensions 12kV Switchgears
W×D×H mm 375×1000×1635(1885) 500×1000×1635(1885) 750×1000×1635(1885)
Incoming cabinet
Outgoing cabinet
Metering cabinet

Circuit breaker cabinet

Lifting cabinet
PT cabinet
Busbar cabinet
Customer requirements
Dimensions 24kV Switchgears
W×D×H mm 650×1080×2015
Incoming cabinet
Outgoing cabinet
Metering cabinet
Circuit breaker cabinet
Lifting cabinet
PT cabinet
Busbar cabinet
Customer requirements

Note: we can design medium voltage switchgear according to the primary system dawings provided by the customer.

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