Model & Meaning

Classification
● By function in the system: Can be divided into incoming line cabinets, outgoing line cabinets, bus tie cabinets, metering cabinets, PT cabinets, surge arrester cabinets and other functional units. Different functional units have different wiring schemes, which are usually indicated by wiring diagrams.
● By type of configured main switch: Can be divided into load switch cabinets (abbreviated as C cabinets), load switch-fuse combination cabinets (abbreviated as F cabinets), and circuit breaker cabinets (abbreviated as V cabinets).
Typical Applications
The GTXGN□(DGSV)-12 series compact solid-insulated ring main unit is an environmentally friendly switchgear independently developed and produced by our company. It has passed product tests conducted by the National Center for Quality Supervision and Inspection of Electrical Products. It is suitable for various power distribution systems—including extremely harsh environments, such as:
● Substations: Consumer substations, substations and switchgears for power systems and public facilities.
● Industrial fields: Wind power plants, high-rise buildings, airports, open-pit coal mines, subway stations, sewage treatment plants, port facilities, traction power supply systems, automobiles industry, petroleum industry, chemical industry, cement industry, thermal power plants, textile industry, papermaking industry and emergency power supply systems.

Product Features
Safety in Use
。 Adopts full solid insulation and is environmentally friendly. Eliminates casualties caused by explosions resulting from internal switch short circuits and pressure buildup;
。 Three-phase integrated solid insulation installation. Service life up to 30 years;
。 Vacuum interrupter circuit breaker module. Capable of breaking and closing short-circuit currents;
。 Visible earthing switch position. Equipped with short-circuit current closing capability;
。 Patented three-position isolating switch. Optimizes electric field structure;

。 Reliable mechanical and electrical interlocks. Effectively prevents misoperation.
● Environmental Friendliness


。 Does not use SF6 gas for arc extinction and insulation;
。 The circuit breaker, isolating switch, and earthing switch adopt an optimized integrated design, featuring a compact structure and small size;
。 The main circuit is designed with fewer contacts to ensure low energy consumption during operation;
。 Fully constructed with environmentally friendly materials.
● Intelligent Design

。Compatible with advanced protection, control, and monitoring functions to achieve smart grid automation;
。Insulated busbars and connection components adopt a modular design, allowing flexible combination according to schemes and meeting user needs to a large extent;
。User-Friendly Operation

。Cable wiring and user operation interfaces are all located at the front of the cabinet, facilitating operation and maintenance;
。Large installation space for computers, enabling easy installation;
。Clear and easy-to-understand operation panel;
● Maintenance-Free & Low Total Cost

。Compact cabinet design with a cabinet width of only 400mm/500mm between different cabinets, saving space;
。High-quality solid insulating materials are used as the insulation medium;
Compliance with Standards
The GTIXGN□(DGSV)-12 series compact solid-insulated ring main units comply with the following standards and specifications:
● GB 1984-2003 High-Voltage Alternating Current Circuit Breakers;
● GB 1985-2004 High-Voltage Alternating Current Isolating Switches and Earthing Switches;
● GB 3804-2004 High-Voltage Alternating Current Load Switches (3.6 kV to 40.5 kV);
● GB 3906-2006 Alternating Current Metal-Enclosed Switchgear and Controlgear (3.6 kV to 40.5 kV);
● GB 16826-2009 Alternating Current Load Switch-Fuse Combinations;
● DL/T 402-2007 Technical Conditions for Ordering High-Voltage Alternating Current Circuit Breakers;
● GB/T 11022-2011 Common Technical Requirements for Standards of High-Voltage Switchgear and Controlgear.
Operating Environment
● Ambient temperature: Not higher than +40℃ and not lower than -40℃;
● Altitude: Not exceeding 3000 meters above sea level;
● Relative air humidity: Daily average not exceeding 95%, monthly average not exceeding 90%; Saturated vapor pressure: Daily average not exceeding 2.2 kPa, monthly average not exceeding 1.8 kPa;
● Seismic intensity: Not exceeding Degree 8;
● Applicable to locationss free from fire, explosion, heavy pollution, chemical corrosion, and severe vibration.
Technical Parameters
● General Specifications

Rated Voltage	KV	12
Rated Current	A	630
Rated Frequency	Hz	50
Power Frequency Withstand Voltage	kV/min	42/48
Lightning Impulse Voltage	kV	75/85
Arc Duration Time	S	25kA/0.5s
Cabinet Protection Class		IP4X
Operating Power Supply Voltage	V	DC:24,48,110,220 AC: 110, 220

● Busbar System

Rated Current	A	630
Rated Short-Time Withstand Current	kA/s	20/4
Rated Peak Withstand Current	kA	50

● Load Switch Unit (Type C)

Rated Current	A	630
Rated Short-Circuit Making Current	kA	63
Rated Short-Time Withstand Current	kA/s	25/4
Mechanical Life of Load Switch	Times	M2 10000
Mechanical Life of Three-Position Isolating Switch	Times	M1 3000
Electrical Life of Load Switch	Times	E3

● Circuit Breaker Unit(V)

Rated Current	A	630
Rated Short-Circuit Breaking Current	kA	20
Rated Short-Circuit Making Current	kA	50
Rated Short-Time Withstand Current	kA/s	20/4
Mechanical Life of Circuit Breaker	Times	M2 10000
Mechanical Life of Three-Position Isolating Switch	Times	M1 3000
Electrical Life of Circuit Breaker	Times	E2
Rated Operating Sequence		0-0.3s-C0-180s-CO

● Load Switch-Fuse Combination Unit(F)

Rated Current	A	125
Rated Short-Circuit Breaking Current	kA	31.5
Rated Short-Circuit Making Current	kA	80
Rated Transfer Current	A	3150