美国预制变电站

ZGS 美国预制变电站

ZGS-11-12/0.4 series prefabricated American-style substations are used in 7.2kV and 12kV ring network power supply, dual power supply, or terminal power supply systems as high-voltage distribution metering, compensation control, and protection devices.

In addition to the transformer, the prefabricated substation is also equipped with a four-station load switch, a two-station load switch, a backup protection fuse and a plug-in fuse on the high-voltage side;

Technical Parameters

Projectunit参数
Rated voltageKV10/0.4 (high pressure/low pressure)
Maximum working voltageKV12 (high voltage side)
Rated frequencyHz50
Rated CapacityKVA100-600
1 minute power frequency withstand voltageKV35
Lightning impulse withstand voltageKV75
cooling method Oil immersed self-cooling
High voltage backup fuse breaking currentKA50
Plug-in fuse breaks currentKA2.5
ambient temperature-35~+40
Coil allowable temperatureK65
No load voltage regulation ±5%±2×2,5%
Noise leveldb50
Protection level IP43

feature of Prefabricated American Substation

  • Small size and compact structure, only about 1/3 of domestic box-type substations of the same capacity;

  • Fully sealed and fully insulated, no insulation distance required, reliably ensuring personal safety;

  • It can be used for both the ring network and terminal. The conversion is very convenient and improves the reliability of power supply;

  • The loss is small, lower than the loss of domestic S9 type transformer;
    The cable joint can operate 200A load current, can operate as a load switch in emergency situations, and has the characteristics of an isolating switch;

  • The use of double fuse protection reduces operating costs. The plug-in fuse is a double-sensitive fuse (temperature, current);
    △/Y is used. The connection method and three-phase five-column structure have the advantages of high voltage quality, no drift of the neutral point, no heat in the box, low noise, and good lightning protection performance.

Technical Parameters

  • Compact design: Contain more function units with less space.

  • Strong versatility for structure, flexible assembly. C type bar section of 25mm modulus can meet the demands of various structures and types, protection grades and operating environments.

  • Adopt standard module design, can be combined into protection, operation, transfer, control, regulation, measurement, indication, etc such standard units. Users can choose assembly according to requirements at will. A cabinet structure and drawer unit can be formed with more than 200 components.

  • Fine security: Adopt high-strength antifoaming type engineering plastic pack in large quantities to effectively enhance the protective safety performance.

  • High technical performance: Main parameters reach the advanced level at home.