HXGN-12 Ring Main Unit Switchgear

Overview:

HXGN- Unit type AC metal-enclosed ring main unit(hereafter refer to as ring net cabinet) is a new generation of high-pressure electric appliance product designed and developed independently by our own company according to the requirement of the domestic agricultural electricity and the city net transformation after introduction of overseas advanced technology. Each technical performance index completely reaches the IEC298 and GB3906 standard. 

The HXGN-12 Ring Main Unit Switchgear cabinet s main switch, the operating mechanism and the components is made of the ABB Corporation original piece or the SFL-12/24 switch equipment imported overseas and ass-embled at home. We can also install the ABB Corporation original piece of HAD/US type SF according to the request of users. The circuit breaker or the VD4-Svacuum circuit-breaker divide into two kinds: be operated manually and electrically according to the operating mode. 

HXGN-12 Ring Main Unit Switchgear cabinet body is riveted after processed by numerical control machine tool with reliable mechanical interlocking and the misoperating prevention function. The protection grade reaches IP3X.This product has the remarkable characteristics such as the small volume, light weight, artistic appearance, simple operation, long life, high parameter with no pollution and little maintenance. 

Working Place:

HXGN口－12 (SFG) unit type exchange metal ring- net switching equipment, is suitable to exchange SOHz、12kV , searving as device of receiving and distribution of electrical energy. 

Structure and Advantage: 

The outline structure of the product is referred to as diagram 1 and diagram 2; the installation dimension is referred to as diagram3. This ring network type cabinet makes air as the insulating medium,mainly assembled with ZFN -10/630 type vacuum load switch. And there are two cabinet schemes- incoming cabinet and outgoing cabinet. 

1. Incoming cabinet scheme 

There is a ZFN-10/630 type vacuum load switch on the main circuit inside the cabinet with isolating knife, and grounding knife conditionally. The three of them are all installed in one machine stand and there are interlocks among them, so that it is realized to connect the operation of three working stations of bus, isolation and grounding. Inside the cabinet the com-ponents such as CT, PY are available.

2.0utgoing cabinet scheme

ZFN □ -10/630 type vacuum load switch, fuse with striker (used as isolating switch) and grounding knife on the main circuit inside the cabinet, and the three working stations oper-ation can be realized. Inside the cabinet the components such as CT/PT and ZNO arrester are available, so the metering cabinet can be omitted. 

Inside the incoming cabinet and out-going cabinet, there is insulating protecting baffle interlocked with grounding switch. And inside the cabinets ,the mechanical interlocks are adopted between each switch and baffle as well as the cabinet door with the requirement of "five-prevention" and IP2X of the protection degree of the cabinet enclosure. 

Operation and  Troubleshooting：

(1) Operation sequence of load switch 

Closing: When the load switch is in the thousand-off state, insert the operating handle into the operating hole of the load switch and turn it clockwise (about 180 degrees) to make it close. 

Breaking: When the load switch is in the closing state, the load switch can be opened by the manual trip button or the tripping electromagnet. For the load switch equipped with a fuse with a striker, after the fuse is blown, the striker will also The load switch can be opened.

 (2) Power-off operation sequence 

a. Open the load switch to release the interlock between it and the isolating and grounding switch. 

b. Insert the operating handle into the operating hole of the isolating and grounding switch, and turn it clockwise (about 90 degrees), the isolating knife is opened. 

c. After turning clockwise again (about 90 degrees), the grounding switch is quickly closed. 

d. Insert the insulating barrier to disengage the door interlock. 

e. Open the door for inspection. 

 (3) Power transmission operation sequence 

a. Close the cabinet door. 

b. Pull out the insulating partition and lock the cabinet door. 

c. Insert the operating handle into the operating hole of the isolation and grounding switch, and turn it counterclockwise (about 90 degrees) to disconnect the grounding switch. 

d. Operate the load switch, close the switch and send power. 

 2 Troubleshooting 

During the working process of the ring network cabinet, if there are faults such as loose fasteners, poor lubrication of the mechanical parts, and a drop in the vacuum degree of the vacuum interrupter, check and eliminate them by fastening, adding lubricant, and applying pressure after the power failure. above failure.

Repair：

1. After the cabinet is open, check all of the insulation pieces and disassemblethe damp ones, put them into 70-80°C drying box, and take out for debugging again after 48 hours drying.

2. If the product is damp or rusty during the storage, please clean it at once and protect it well.

3. Maintenance and repair should be done to ring network cabinet during operation.

(1).Vacuum extent of vacuum arc-extinguishing room

(2).Contact abrasion degree；

(3).Whether the fastening pieces are loose or not;

(4).Mechanical electric parameter such as open travel, over travel.

(5).Whether the running is flexible or not;

(6).Whether the interlock is reliable or not;

(7).Whether all of the parts are clean, especially for insulation fittings.

4.Do overall examination and debugging to ring network cabinet in following conditions:

(1).Routine examination and cleaning for every

(2).After every 2000 times operation of load switch

The main Technical Parameters

Product outline and installation dimensions：

（Unit:mm）

Combination electrical cabinet

Load switch cabinet

Shaanxi Huadian Electric Co., Ltd.  is located in Baoji High-tech Development Zone, Shaanxi Province, China. It is a modern high-tech enterprise specializing in the production of vacuum circuit breakers integrating R&D, manufacturing and sales.

Shaanxi Huadian products have been widely used in power plants, metallurgy, petrochemicals, railways, mines, radio and television, urban construction and rural power grid reconstruction projects, and are well received by users for their high-quality products and services.

Certifications

Delibery and Payment

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