Product details

 PRODUCT DESCRIPTION

GJS6-12 fully enclosed and insulated ring network switchgear adopts modular design, which can be combined according to different purposes; There are two main types of fixed unit combinations and expandable units, which meet the flexible use needs of various substations for compact 

switchgear

The GJS6-12 fully enclosed and insulated ring network switchgear is a completely sealed system, with its live parts and switches enclosed in 

a stainless steel body. The entire switch device is not affected by external environmental conditions, and can ensure the normal operation of the 

switch even in extreme situations such as short-term water immersion, thereby ensuring operational reliability and personal safety, and achieving maintenance free operation. By selecting expandable busbars, any combination can be achieved to achieve full modularity. The expansion of busbar 

safety insulation and shielding ensures reliability and safety.

The GJS6-12 fully enclosed and insulated ring network switchgear can also provide TV based automation solutions, forming the concept of intelligent switches and minimizing on-site safety and debugging workload.

GJS6-12 fully enclosed and insulated ring network switchgear shall comply with GB standards. The design lifespan for operation under indoor 

conditions (20 ℃ ) exceeds 30 years. The demand is increasing day by day, gradually showing a market relationship of supply and demand shortage. 

Therefore, this system has broad market prospects.

EXECUTIVE STANDARD

GB3804 3.6kV~40.5kV High Voltage AC Load Switch

GB1984 High Voltage AC Circuit Breaker

GB16926 High voltage AC load switch fuse combination electrical apparatus

GB1985 High Voltage AC Isolating Switches and Grounding Switches

GB3906 3.6kV~40.5kV AC metal enclosed switchgear and control equipment

GB/T11022 Common Technical Requirements for High Voltage Switchgear 

and Control Equipment Standards

GB4208 Degrees of Protection Provided by Enclosures (IP Code)

GB/T5582 Pollution level of external insulation of high-voltage power equipment

GB9969.1 General Principles for Industrial Product User Manual

DL/T404 3.6kV~40.5kV AC metal enclosed switchgear and control equipment

GB/T13384 General Technical Conditions for Packaging of Mechanical and Electrical Products

GB191 Packaging, Storage and Transportation Symbols

GB311.1 Insulation Coordination of High Voltage Transmission and Distribution Equipment

PRODUCT NUMBER：

Note: C: Load switch unit; F: Combination electrical unit; V: Circuit breaker unit

USE ENVIRONMENT：

1. Altitude: ≤ 4000m (please specify when the equipment is operating at an altitude of over 1000m for adjustment of inflation pressure during 

manufacturing).

2. Environmental temperature: Maximum temperature:+55 ℃ ; Minimum temperature: -40 ℃ ; The average temperature within 24 hours shall not 

exceed 35 ℃ .

3. Environmental humidity: The average relative humidity over 24 hours should not exceed 95%; The average monthly relative humidity does not 

exceed 90%.

4. Installation environment: The surrounding air is free of explosive and corrosive gases, the installation site is free of severe vibration and impact, and 

the pollution level does not exceed level III in GB/T5582.

5. Seismic intensity: 9 degrees.

PRODUCT FEATURES：

1. Modular design

Including load switch unit (C), load switch+fuse combination electrical unit (F), circuit breaker unit (V), metering cabinet unit (M), busbar PT unit (PT), 

etc., different modules can be freely combined to form a ring main unit.

2. Fully insulated and sealed design

The primary live part (main busbar) and switch body of GJS6-12 switchgear are sealed in a stainless steel plate welded gas box. The main circuit is 

connected to the outside through a sleeve installed on the gas box that complies with DIN47636 standard. It can be connected to the incoming and 

outgoing cables through a fully insulated, fully shielded, and fully sealed detachable connector. The protection level of the gas box reaches IP67, and 

the interior of the gas box is not affected by the external environment, with short-term flood and condensation resistance functions.

3. Flexible and scalable design

The GJS6-12 switchgear can be combined with various standard unit modules to form a common box type non expandable fixed ring network 

switchgear (up to 6 units can be shared in the same GJS6-12 insulated gas box), or different module combinations can be designed as expandable 

units. Through dedicated fully insulated and fully shielded busbar connectors, multiple forms of combinations can be achieved, achieving full 

modularity and meeting the needs of different regions, forms, and customers to the maximum extent, providing diversified power supply and 

distribution design solutions.

4. High safety and reliability

The live part and switch body are sealed in a stainless steel gas box and connected to the outside through a sleeve, avoiding direct contact with the 

live body; The equipment has reliable pressure release devices and pressure relief channels, ensuring the safety of personnel and equipment in the 

event of a malfunction; Having a complete mechanical interlocking device can prevent misoperation to the greatest extent possible.

5. Newly developed independent institutions

We have independently developed and designed spring operating mechanisms, optimized components, simplified transmission structures, making 

the overall mechanism more stable, transmission more flexible, and expandable for intelligent control. Interlocking adopts rigid connections, which 

are relatively more reliable than soft connections. The components, micro switches, and circuit boards are integrated in a modular manner for easy 

maintenance and repair.

6. Advanced welding and sealing technology

GJS6-12 switchgear strictly controls the strength, hardness, compression deformation, and other properties of materials involved in elastic sealing 

components such as dynamic seals (switch operating shafts), pressure gauges, high-pressure bushings, and explosion-proof valves. Through a series 

of testing and inspection methods, the sealing performance is ensured.

◆ High precision manufacturing of gas boxes: Drawing on advanced industry experience, we have introduced Suzhou Xunlei high-precision laser 

cutting machines and CNC punching, reducing, folding and other equipment to ensure the dimensional accuracy of gas box parts processing. We use 

ABB welding robots and fully automatic welding processes to ensure high welding efficiency, stable gas box quality, beautiful welds, and prevent gas 

leakage inside the gas box and external moisture invasion, maximizing the stability of GJS6-12 gas cabinet performance.

◆ High quality control requirements for components: Components such as dynamic seals, density meters, and high-voltage bushings must be tested 

using helium mass spectrometer leak detectors and X-ray non-destructive detectors. Relevant insulation components must undergo partial discharge 

testing to ensure the high quality of components and improve the sealing performance of the gas box.

◆ Comprehensive leak detection technology: In addition to quality control of components, after assembly and inflation of the gas box, further 100% 

leak detection is required.

◆ High standard requirement: The annual relative gas leakage rate is less than 0.01%, which is much higher than the technical requirement of less 

than 1% stipulated by national standards.

7. Automated assembly line

Advanced automated assembly lines and sophisticated industrial processes ensure production efficiency and improve assembly accuracy.

FKNG RING MAIN TECHNICAL PARAMETER TABLE：

COMBINATION UNIT SCHEME：

The configuration of each individual model switch unit in the combination scheme of GJS6 switch series can be found in the standard 

configuration and optional configuration in the basic unit scheme. Each common box combination is equipped with a density meter and an operating 

handle. (Note: Combination gas box+mechanism scheme can be provided separately)