Product details

overview

The HXGN □ -12 series AC metal ring network switchgear is a compact and expandable metal enclosed ring network switchgear suitable for distribution automation, which uses FLN □ -12 SF6 load switch as the main switch and adopts air insulation throughout the cabinet. It has the characteristics of simple structure, flexible operation, reliable interlocking, and easy installation. We can provide corresponding technical solutions for various application scenarios and user requirements.

The main switch of the HXGN □ -12 series AC metal ring network switchgear is FLN36-12 produced by our company. It can also be equipped with VS1, VD4/S, ISM vacuum circuit breakers or HD4/S5 SF6 circuit breakers according to user needs. Load switches and circuit breakers can be operated manually or electrically, and with the optional electric operating mechanism, PT. CT. FTU, and communication device, distribution automation functions can be achieved.

Model Function

Reference standards and main technical parameters

Structure and basic components of circuit breaker cabinet:

Basic structure

The HXGN □ -12 circuit breaker cabinet is mainly used for the incoming cabinet of the main or backup power supply in the ring network power supply system, as well as the intermediate section cabinet of the dual power supply system. Among them, VS1 type, VD4/S type, ISM vacuum circuit breaker or HD4/S SF6 circuit breaker can be selected, with slightly different external dimensions. The circuit breaker cabinet consists of the instrument room, busbar room, load (isolation) switch room, circuit breaker room, and cable room from top to bottom. It can be configured with CT, PT, lightning arrester, grounding switch, and relay protection device according to user needs, and has reliable "five prevention" interlocking function.

The operating mechanism of VS1 vacuum circuit breaker is spring energy storage type, which can be operated by AC or DC or manually. It is currently the most widely used domestic vacuum circuit breaker. Its dominant electrical circuit and operating mechanism are designed as a whole, with stable quality and reliable performance. Composite insulation for the main electrical circuit, with a small volume. It can be installed in a handcart or fixed manner.

Corresponding to the rated current specification of 630A, the rated short-circuit breaking current reaches 25kA.

VD4/S-type vacuum circuit breaker or HD4/S-type SF6 circuit breaker is specially designed by Italian companies for ring main switchgear. Its breaking capacity is sufficient to cope with various states, including normal switching equipment or branch network operation, as well as breaking short-circuit current in other situations. These two types of circuit breakers, A, B, and C, are arranged vertically in three phases, easy to install, small in size, and light in weight. The rated short-circuit breaking current reaches 25kA

The German ISM permanent magnet mechanism vacuum circuit breaker is designed specifically for the installation of 10kV ring network cabinets, and is a product with high voltage switch technology level. Its permanent magnet operating mechanism is an electromagnetic device with electronic control, online detection components, and permanent magnet holding.

basic components

(A) Upper unit:

*Three position SF6 load switch

*Operating mechanism with mechanical position indicator device

*Interlocking device * integrated low-voltage room relay protection device

*Busbar chamber shell

*Busbar

(B) Central Unit:

*Circuit breaker room

*VS1 type or VD4/S type, ISM type vacuum circuit breaker or HD4/S type SF6 circuit breaker

(C) Lower unit:

*Grounding busbar

*Cable room shell

*Optional components for cable room bottom plate with cable support components

*Integrated charged display or portable charged display insertion interface

*Auxiliary contacts at each position: 2NO+2NC

*SF6 gas pressure monitor with alarm contacts (SF6 load switch)

*Current Transformer

*Voltage Transformer

*Lightning arrester

*Electric operating mechanism (SF6 load switch)

*Bottom grounding switch

*Short circuit ground fault indicator

*Cold shrink indoor cable terminal

Other cabinet types with external dimensions