Box-type Combined Prefabricated Substation
Prefabricated substations (hereinafter referred to as box-type substations) are suitable for power users, such as subways, airports, ports, stations, industrial and mining enterprises, and various public buildings (such as hotels, hospitals, high-rise buildings, stadiums). Used for AC 50Hz and...
Description
Prefabricated substations (hereinafter referred to as box-type substations) are suitable for power users, such as subways, airports, ports, stations, industrial and mining enterprises, and various public buildings (such as hotels, hospitals, high-rise buildings, stadiums). Used for AC 50Hz and 60Hz, high voltage side rated voltage 3.6~40.5kV, low voltage side rated voltage 220~690V, rated capacity 2000kVA and below system. It can be used as a permanent power supply device or as a temporary power source for construction sites. It is a pre-installed substation with outdoor conditions for public use and can replace civil substations.
| Name | Unit | Data | ||||
| Rated frequency | Hz | 50/60 | ||||
| High voltage unit | Rated voltage | kV | 3 | 6 | 10 | 35 |
| Maximum working voltage | kV | 3. 6 | 7. 2 | 12 | 40.5 | |
| Power frequency withstand voltage to earth/interphase isolating distance | kV | 25/ 27 | 30/ 34 | 42/ 48 | 95/ 118 | |
| Lightning impulse withstand voltage to earth/ interphase isolating distance | kV | 40/ 46 | 60/ 70 | 75/ 85 | 185/ 215 | |
| Rated current | A | <=630 | ||||
| Rated short-time withstand current | kA/ 2s (kA/ 4s) | 12. 5 ,16,20,25,31. 5 | ||||
| Rated peak withstand current | kA | 31. 5 ,40,50,63,80 | ||||
| \ | Rated voltage | V | 220 | 380 | 690 | |
| Rated current of main circuit | A | <=3200 | ||||
| Rated short-time withstand current | kA/ 1s | 15,30,50 | ||||
| Rated peak withstand current | kA | 30,63,105 | ||||
| Rated current of branch circuit | A | <=1600 | ||||
| Reactive power compensation capacity | kvar | <=600 | ||||
| Transformer unit | Rated capacity | kVA | <=2000 | |||
| Impedance voltage | % | 4,4. 5 ,6 | ||||
| Tap ranges | ±2X2. 5%,±5% | |||||
| Connections | Y/ Yn0 ,D/ Yn11 | |||||
Main feature
⚫The structure is compact, easy to assemble, and not affected by climate;
⚫Ensure personal safety and reduce maintenance workload;
The optimized ventilation structure design and the labyrinth layout of the door panels enable the transformer chamber to obtain a good natural ventilation effect, and it is easy to maintain and clean;
⚫The high-voltage side of the transformer is connected to the load switch fuse through a cable. Both ends of the cable are fully enclosed and accessible elbow cable plugs, which can ensure more reliable and safer operation;
⚫According to user requirements, measurement devices and automatic capacitance compensation devices can be provided
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