Overview Overview

SRM6-12 inflatable SF6 metal enclosed fully insulated series bad mesh switchgear. Products are widely used in 10kV/6kV power distribution system, is a switch product for various types of urban and rural user power distribution system. The switchgear is modular unit mode, which can be combined according to different uses; There are two categories: fixed unit combination and scalable unit, to meet the flexible use of compact switchgear in various substations.

The SRM6-12 Inflatable Bad Net Cabinet is a hermetically sealed system with live parts and gates enclosed in a stainless steel body. The entire switch is not affected by external environmental conditions, so that operational reliability and personal safety can be achieved. It is also maintenance-free. By choosing an expandable busbar, any combination can be achieved to achieve full modularity. Extended busbar Safety insulation and shielding for reliability and safety. SRM6-12 inflatable ring network cabinet can also provide TV-based automation solutions, forming the concept of intelligent switch, and will install and debug the workload on site.

SRM6-12 inflatable ring cabinet is divided into non-extended standard configuration and expandable standard configuration. Flexibility due to the combination of full and semi-modular modules and self-scalability.

SRM6-12 inflatable bad net cabinet implements GB standard.

◆ Illustrate with examples:

◇ SRM6-12-C/630DL means load switchgear, rated voltage 12kV, rated current 630A, right extension, left cable entry and exit mode.

◇ SRM6-12-CF/630IR means that the load switch unit and the fuse combination unit are combined, the bus voltage is 12kV, the bus current is 630A, the left side is extended, and the right cable is in and out of the line.

Product model main features

◆Safe operation

◆We can provide users with special security through the following security measures:

◇ Integrated three-station load switch

◇ The circuit breaker adopts load switch instead of disconnector, which is safer and more reliable

◇ The fully enclosed design of the primary side provides protection from external contact

◇ Mechanical interlock that meets the requirements of five defenses

◇ The live display can provide live indication of incoming and outgoing lines

◆Reliable operation

◇ Fully sealed design, 10kV switch and bus bar charged body are sealed in a 3mm stainless steel plate welded into a gas box; With silicone rubber cable plug, the cable head is fully insulated and fully sealed, so as not to be affected by dust, moisture, small animals and other external environments

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

◇ Panel analog line diagram provides switch position indication

◇ The cabinet body is made of galvanized sheet, and the surface is electrostatically sprayed to enhance the corrosion resistance

◇ The pressure gauge monitors the safe pressure range of SF6 gas in the box

◆ Economy

◇ Maintenance-free

◇ Highly reliable

◆Flexible solution

◇ A variety of line entry methods, can realize left, right, up or forward line

◇ A variety of combination methods, any combination between each unit can be realized

◇ Using insulated busbar, it can realize front and rear cabinet or left and right cabinet

◇ Flexible design

◆Wide range of applications

◇ The feed line has a large capacity and small land occupation, which is suitable for a variety of application needs

Design Notes

◆Technical description

The SRM6-12 series inflatable switchgear is mounted on a galvanized sheet frame with the switching unit inside an SF6 gas box made of corrosion-resistant and non-magnetic 3mm thick stainless steel plate. The SF6 air box is a "sealed pressure system". SF6 gas has a normal working pressure of 0.15 to 0.4 bar. The gas box is equipped with a pressure relief device to ensure that the gas can be released from the bottom or rear when the pressure is too high.

◆ Switch unit

The load switch adopts the coaxial rotation double break point method, and the kinetic energy operation is carried out with the slide plate through the same operating hole, so the switch can only be in one of the three states of "closing, opening and ground connection" at any time to avoid misoperation.

◆Operating mechanism

The operating mechanism of the switch is installed in the front outside the gas box, which is processed to prevent rust, convenient for manual operation and maintenance, and easy to achieve electric operation.