I. Overview

The independently developed JHSRM16-12 inflatable SF6 metal enclosed full insulation series ring main switch cabinet has passed the type test of the National High Voltage Apparatus Test Center and been listed as a high-tech product in Zhejiang Province for the Zhejiang Province High tech Technology Project. The product is widely used in 10kV/6kV distribution systems and is a switch product for various urban and rural users' power transformation and distribution systems. The switchgear adopts a modular unit mode, which can be combined according to different purposes; There are two main types of fixed unit combinations and expandable units, which meet the requirements of various substations for compact opening

The need for flexible use of cabinets. The JHSRM16-12 inflatable switchgear is a completely sealed system, with its electrical components and switches enclosed within a stainless steel body. The entire switch device is not affected by external environmental conditions, ensuring operational reliability and personal safety. And it has achieved maintenance free operation. By selecting expandable busbars, any combination can be achieved to achieve full modularity. Expanding the safety insulation and shielding of the busbar ensures reliability and safety. The JHSRM16-12 inflatable switchgear can also provide a TV based automation solution, forming the concept of intelligent switches and minimizing on-site installation and commissioning workload.

The HSRM16-12 inflatable switchgear is divided into non expandable standard configuration and expandable standard configuration. Due to its combination of full and half modules and self scalability, it has extremely special flexibility.

The design lifespan for operation under indoor conditions (20 ° C) exceeds 30 years.

Transformer/Line Protection

JHSRM16-12 inflatable cabinet provides two types of transformer protection: load switch fuse combination device and circuit breaker with relay protection.

Use load switch fuse combination electrical module

The combination of current limiting high-voltage fuses and load switches for transformer protection. The fuse compartment will be installed behind a separate, locked enclosure located at the front of the unit. The load switch uses a spring energy storage mechanism, which can be triggered by a fuse striker.

In order to facilitate the replacement of fuses. You can use the operating handle to remove the end cover of the fuse chamber. The pre installed tripping mechanism of the fuse ensures the waterproof performance of the entire system.

II. Main features of the product

Operational Security

We can provide special security protection for users through the following security measures:. Integrated three station load switch

-- Circuit breakers use load switches instead of isolation switches for greater safety and reliability

-- One side fully enclosed design

-- Mechanical interlocking that meets the five prevention requirements

-- Live display can provide live indication for incoming and outgoing lines

Reliable operation

-- Fully enclosed design, all 10KV switches and busbar live parts are sealed in a 3mm stainless steel welded gas box; Equipped with silicone rubber cable plugs to achieve full insulation and sealing of cable heads, thus avoiding external environmental influences such as dust, moisture, and small animals

-- Spring energy storage operating mechanism, can be operated manually or electrically

-- Panel simulation line diagram provides switch position indication

-- The cabinet is made of galvanized sheet metal, with surface electrostatic spraying to enhance corrosion resistance

-- Safe pressure range of SF6 gas inside the pressure gauge monitoring box

Economy:

-- Maintenance free

-- Highly reliable

-- The service life can reach 20 years

Flexible plan

-- Multiple entry methods can be used to achieve left, right, up, or forward lines.

-- Multiple combination methods can be used, and any combination between units can be achieved.

-- By using insulated busbars, it is possible to achieve front and rear parallel cabinets or left and right parallel cabinets

-- Flexible design scheme

Widely used

-- The feeder line has a large capacity and occupies a small area, suitable for various application needs

III. Design Specifications

-- Technical Description

The JHSRM16-12 series inflatable switchgear is installed on a galvanized sheet frame, with the switch unit inside an SF6 gas box made of corrosion-resistant and non-magnetic 3mm thick stainless steel plate.

SF6 gas tank is a "sealed pressure system" that can operate for 20 years under normal working conditions. The pressure of SF6 gas during normal operation is 0.15~0.4 bar. The gas box is equipped with a pressure release device, which ensures that gas can be released from the bottom or rear when the pressure is too high.

-- Switching unit

The load switch adopts a coaxial rotating double break method, which cooperates with the sliding plate through the same operating hole for kinetic operation. Therefore, the switch can only be in one of the three states of "closing, opening, and grounding" at any time, completely avoiding misoperation.

-- Operating mechanism

The operating mechanism of the switch is installed at the front of the air box and has undergone special processing to prevent rust and corrosion. It is convenient for manual operation and maintenance and easy to achieve electric operation.