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
Project | unit | 参数 |
---|---|---|
Rated voltage | KV | 10/0.4 (high pressure/low pressure) |
Maximum working voltage | KV | 12 (high voltage side) |
Rated frequency | Hz | 50 |
Rated Capacity | KVA | 100-600 |
1 minute power frequency withstand voltage | KV | 35 |
Lightning impulse withstand voltage | KV | 75 |
cooling method | Oil immersed self-cooling | |
High voltage backup fuse breaking current | KA | 50 |
Plug-in fuse breaks current | KA | 2.5 |
ambient temperature | ℃ | -35~+40 |
Coil allowable temperature | K | 65 |
No load voltage regulation | ±5%±2×2,5% | |
Noise level | db | 50 |
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.