SGZ type combined AC low pressure closing cabinet
  • SGZ type combined AC low pressure closing cabinet
  • SGZ type combined AC low pressure closing cabinet

SGZ type combined AC low pressure closing cabinet

SGZ AC low voltage switchgear set


SGZ type combined AC low-voltage closing cabinet is a three-four-phase AC, 50Hz low-voltage switchgear set. Based on GCS type low-voltage extraction switchgear and SGF and GGD type low-voltage fixed switchgear, Zhengchao absorbs advanced technology of SIVACON 8PT low-voltage cabinet authorized by Siemens. The low-voltage switchgear set designed by continuous innovation, compatible with fixed structure and extraction structure, has the characteristics of novel structure, high breaking capacity, good dynamic and thermal stability, safe and reliable operation, convenient installation and maintenance, can be configured with intelligent interface device. The products have been widely used in large and medium-sized power plants (1000MW and below units), 35kV ~ 500kV substations, petrochemical and international engineering, and can be used in coastal high humidity, high salt spray and other special weather conditions. In May 2003, the product obtained the "China National Compulsory Product Certification (CCC) certificate".



◇ Switch cabinet structure, performance and characteristics. ◇


Cabinet for assembly structure, high mechanical strength. The combination of fixed structure and draw-out structure is flexible, and the cable can enter and exit the cabinet through the bottom and/or top of the cabinet. The cabinet is divided into busbar room, function unit room, cable room and other areas. Each function unit room is separated by a grounded metal partition, which can effectively prevent the expansion of faults. The electrical components in the cabinet have large air gap and creepage distance, high insulation strength, and good dynamic and thermal stability.


PC cabinet puller circuit breaker and MCC cabinet drawer type are equipped with switch on, switch off, test, isolation and pull out position, drawer in switch on, switch off, test, isolation position automatically positioning and locking, after the release of positioning can enter the next position.


Switchgear can be configured with intelligent interface device, and the field bus or through the adapter and DCS Ethernet connected, can be monitored in the operation station.


Switchgear is usually installed without wall and maintained on both sides. Cabinet protection grade is high, the front can be equipped with toughened glass protective door. Cabinet surface treatment technology advanced, with anti-moisture, anti-mildew, anti-salt spray, corrosion resistance.



◇ Normal service conditions. ◇


Altitude: The altitude of the site shall not exceed 2000m;


Ambient temperature: upper limit +40℃, lower limit -5℃, daily average temperature is not higher than 35℃;


Relative humidity: daily average is not more than 95%, monthly average is not more than 90%;


Seismic intensity: not more than 8 degrees;


Installation site: no fire, explosion risk, serious pollution, chemical corrosion and violent vibration.


Note: Where beyond the above requirements, should be negotiated with the manufacturer to determine.


1. Our company's whole series of low-voltage switchgear has passed a full set of type tests:

All current levels of 6300A, 4000A, 3200A, 2000A and 1600A of low-voltage switchgear have passed the type test.

Low voltage switchgear has passed 35kA/0.3s resistance to internal fault arc type test.

The low-voltage switchgear has passed the seismic test (horizontal acceleration 1.09g, vertical acceleration 0.26g).

2. The low-voltage switchgear of our company has passed the special sampling inspection and verification of Guangdong Power Grid Company in 2017.

3. We have obtained 10 patents for invention and utility model.

4. In 2014, the low-voltage switchgear passed the appraisal of scientific and technological achievements organized by the Department of Science and Technology of Guangdong Province, reached the domestic advanced level, and won the second prize of provincial science and technology award, which is the "high-tech products of Guangdong Province".

5. The technical performance of low-voltage switchgear conforms to the technical standards and requirements of the nuclear power industry, and it has obtained the design license and manufacturing license of civil nuclear safety equipment issued by the National Nuclear Safety Administration.

6. Main primary and secondary electrical components and new technologies and materials of Zhengchao's own brands can be selected to upgrade intelligent functions: