Overview

The GTXGN-12 series is a new generation of compact solid insulated ring network cabinets with a high level of operational safety and is used in distribution networks as the core unit of distribution networks. The main modular components of the equipment are composed of a circuit breaker plus a three-station isolating switch body, a fuse cartridge, an insulated busbar

and a cable joint. All high-voltage live parts are cast with high-quality insulation materials. The vacuum arc extinguishing chamber, main conductive circuit, insulation support, etc. are organically combined into one to achieve a fully insulated, fully sealed, and maintenance-free structure. At the same time, it also greatly reduces the insulation gap between switches. The 

position status of the grounding switch can be observed through the insulation observation window of each circuit, ensuring the safety of operation, inspection and maintenance.

The vacuum circuit breaker and the three-station isolating switch adopt the latest design combined spring operating mechanism to ensure the reliability of the operation of the circuit 

breaker (load switch) and the three-station isolating switch.

The GTXGN-12 series of compact solid insulated ring network cabinets can be equipped with an intelligent online monitoring system to provide a strong guarantee for the normal operation of the distribution cabinet and the entire distribution line.

 Classification

• According to the functions in the system, it can be divided into incoming cabinets, outgoing cabinets, bus tie cabinets, metering cabinets, PT cabinets and other functional units. Different units have different wiring schemes, which are usually represented by wiring schemes. .

• According to the classification of the configured main switch, it can be divided into load switch cabinet (referred to as C cabinet), load switch fuse combination electrical

  cabinet (referred to as F cabinet), and circuit breaker cabinet (referred to as V cabinet).

Typical uses

GTXGN-12 series compact solid insulated ring network cabinet is a green and environmentally friendly switch independently developed and produced by our company. It has passed the product inspection of the National Electrical Product Quality Supervision and Inspection Center and is suitable for various power distribution systems:

       Substations: user substations, substations and switching stations for power systems and public facilities

       Industrial areas: wind power stations, high-rise buildings, airports, open-pit coal mines, subway stations, sewage treatment plants, port facilities, automotive industry, petroleum industry, cement industry, textile industry, paper industry, and emergency power systems.

Features

⑴Safe to use

1. Safe and solid insulation is used, which is green and environmentally friendly. There is no casualty accident caused by explosion due to internal switch short circuit and pressure rise.

2. hree-phase integrated solid insulation installation, service life up to 30 years

3. acuum interrupter circuit breaker module has the ability to break and close short-circuit current.

4. The position of the grounding switch is visible and has the ability to close short-circuit current.

5. Three-position isolating switch with patented technology to optimize the electric field structure.

6. Reliable mechanical and electrical interlocking to effectively prevent food manipulation

(2) Green environment

1. Does not use SF6 gas as arc extinguishing insulation

2. Circuit breaker, isolation switch and grounding switch adopt optimized integrated design, compact structure and small size

3. The main circuit adopts the minimum contact design to ensure low energy consumption during operation

4. Completely designed with environmentally friendly materials

(3) Intelligent design

1. Can be used with advanced protection, control and detection functions to realize smart grid automation

2. The insulated busbars and connecting components adopt modular design and can be flexibly combined according to the plan to meet customer needs to the greatest extent

(4) Easy to use and maintenance-free

1. Cable wiring and user operation interface are located at the front of the cabinet for easy maintenance

2. Large space for cable installation, easy to install

3. The operation diagram is clear and easy to understand.

(5) Maintenance-free and low total cost

       The cabinet design is compact, and the width of different cabinet types is only 400mm*500mm, saving space.

       Use high-quality solid insulation materials as the insulation medium

Standards compliant

GB1984-2003 《High Voltage AC Circuit Breaker》

GB1985-2004 《High voltage AC isolating switch and grounding switch》

GB3804-2004 3.6-40.5KV 《High Voltage AC Load Switch》

GB3906-2006 3.6-40.5KV 《AC metal-enclosed switch and control equipment》

GB16926-2009 《AC load switch-fuse combination appliance》

DL/T402-2007 《Technical Conditions for Ordering High Voltage AC Circuit Breakers》

GB/T11022-2011 《Common technical requirements for high-voltage equipment and control equipment standards》

Usage environment:

The ambient temperature is not higher than 40℃ and not lower than -40℃

The altitude is not more than 3000m

The daily average relative air temperature should not be greater than 95%, and the monthly average should not be greater than 90%.

The earthquake intensity does not exceed 8 degrees

There is no place for fire, explosion, serious pollution, chemical corrosion and severe vibration.

Technical Parameters

• General

Rated voltage 12KV

Rated current 630A

Rated frequency 50HZ

Power frequency withstand voltage 42/48 KV/min

Lightning impulse voltage 75/85 KV

Arc duration: 25KA/0,5S

Cabinet protection level: IP4X

Operating power voltage: DC: 24.48.110.220 AC: 110,220

• Bus-bar system

Rated current: 630A

Rated short-time withstand current: 20KA/4s

Rated peak withstand current 50KA

• Load switch unit (C)

Rated current 630A

Rated short circuit making current 63KA

Rated short-time withstand current 25KA/4S

Load switch mechanical life: M2/10000 times

Three-position isolating switch mechanical life: M1/3000 times

Load switch electrical life: E3

• Circuit breaker unit (V)

Rated current 630A

Rated short circuit breaking current: 20KA

Rated short circuit closing current: 50KA

Rated short-time withstand current: 20KA/4s

Mechanical life of circuit breaker: M2/10000 times

Three-position isolating switch mechanical life: M1/3000 times

Circuit breaker electrical life: E2 times

Rated operating sequence: O-03s-CO-180s-CO

• Load switch fuse combination electrical power supply (F)

Rated current 125A

Rated short circuit breaking current: 31.5KA

Rated short circuit making current 80 KA

Rated handover current 3150A