Product Introduction

HJGT solid fully insulated metal-enclosed switchgear is a fully insulated, fully sealed, maintenance-free solid insulated vacuum switchgear. The high-voltage live parts are all cast and molded from epoxy resin material with excellent insulation properties, organically integrating the vacuum arc chamber, main conductive circuit, and insulating supports into a single unit, with functional units connected by fully insulated solid busbars. Therefore, the entire switchgear is unaffected by external environmental factors, ensuring operational reliability and operator safety.

This ring network cabinet features a simple structure, flexible operation, reliable interlocking, and easy installation. It is suitable for 50Hz and 12kV power systems, widely used in industrial and residential cable ring networks and distribution terminal projects, serving as the source for receiving and distributing electrical energy. It is especially suitable for urban residential distribution, small substations, switches, cable branch boxes, box-type substations, industrial and mining enterprises,

Used in shopping malls, airports, subways, wind power plants, hospitals, stadiums, railways, tunnels, and other locations.

Because this product features full insulation, full sealing, and full shielding, it is especially suitable for use in harsh environments such as high altitude, high temperature, humid heat, severe cold, and severe pollution.

Product categories

According to switch type, they are divided into load switch assembly with grounding (referred to as C module), load switch assembly without grounding (abbreviated as CB module), circuit breaker assembly with grounding (abbreviated as V module), circuit breaker without grounding assembly (abbreviated as VB module), circuit breaker interconnect switch (abbreviated as VZ module), load switch + fuse combined electrical switch assembly (referred to as F module), and isolating switch assembly (abbreviated as G module).

Model meaning

Working conditions

◇ Ambient temperature: -45°C ~ +45°C

◇ Humidity: Average relative humidity, daily average ≤ 95%, monthly average ≤ 90%

◇ Elevation: ≤ 4000 meters

◇ Earthquake resistance: 8 degrees

◇ Protection rating: Sealed with live IP67, fuse tube IP67, switchgear enclosure IP3X

Functions and Features

◇ Environmentally friendly

All materials selected in product manufacturing are non-toxic and harmless, and no toxic or harmful substances are emitted during use. After the materials have a lifecycle, they can be recycled, which determines their environmental friendliness.

Fully insulated, fully sealed, fully shielded epoxy resin switch cylinders and fuse cylinders (epoxy resin has excellent electrical, mechanical, and thermal properties, and has long been used in electrical equipment with good results). Switch cylinders and fuse cylinders are formed using epoxy resin APG technology. The insulated cylinder is a key component of solid-insulated switches; it serves both as an insulating component and a load-bearing component. It is required to meet technical requirements such as heat resistance, weather resistance, crack resistance, high mechanical strength, and good insulation strength. The cylinder is large, has many inserts, and various shapes, making manufacturing somewhat challenging. Our company has many years of experience in designing and manufacturing insulating components, and has made efforts from shell design, material formulation, to process flow to ensure excellent mass production of these components. According to user requirements, we can provide a barrel with external shielding grounding that can be touched.

◇ Maintenance-Free:

Except for the operating mechanism, the high-voltage switch section of the solid-insulated indoor AC high-voltage vacuum switchgear is fully sealed, eliminating the need for cleaning and maintenance, thereby reducing operating and maintenance costs.

◇ Safety:

Because touchable areas are shielded, personal electric shock accidents are prevented, improving safety and usability. A comprehensive interlock system with clearly visible three-phase isolation break points prevents accidental misoperation. The use of SF6 gas has been eliminated, preventing explosions caused by insufficient gas pressure in SF6 ring cabinets that could reduce insulation performance and arc extinguishing capability. Reinforced phase-to-phase isolation structures prevent expansion or explosion accidents caused by interphase or multi-circuit short circuits. Vacuum arc extinguishers with explosion-proof properties are used, and switch sleeves provide further protection for switches. Load switches—fuse combined appliances The auxiliary grounding switch is sealed with vacuum switch tubes inside the fuse shell.

◇ Ease of Operation:

The grounding switch for isolating switches has only one operating handle, so there is no need for identification or concern about errors. When the circuit breaker is running, neither the isolating switch nor the grounding switch can be operated. The operating procedures are clear at a glance, and anyone with some electrical knowledge can operate it, allowing for indiscriminate technical training. This makes operation exceptionally simple and eliminates operational errors.

◇ Intelligent:

The switchgear is equipped with intelligent interfaces and sensor installation positions. After being equipped with intelligent devices, it can meet the requirements of the smart grid.

◇ Versatile Operating Mechanisms:

The switch can be equipped with both spring and permanent magnet operating mechanisms, making it convenient for users to choose.