Page 53 - YINGMING POWER(HIGH & LOW VOLTAGE SWITCHGEARS)
P. 53

ZGS □ -12
          PREFABRICATED
          SUBSTATION (US)                                                                            YINGMING POWER

          Function and characteristics
          ◆ Fully insulated, fully sealed, free of maintenance, and reliable to ensure personal safety;
          ◆ Compact structure, the volume is only 1/3-1/5 of the same capacity, and the height is low;
          ◆ It can adopt the box-type structure to avoid oil pollution in the transformer tank;
          ◆ The high-voltage side adopts full-range protection of double fuses, which greatly reduces the cost;
          ◆ That is, the ring network can be used, and it can also be used for the terminal. The cable head can be inserted and removed urgently under the load
          current of 200A;
          ◆ The box body adopts honeycomb double-layer composite board, which has the function of temperature and heat dissipation;
          ◆ Install an electronic phase loss protector on the low voltage side. When an abnormal voltage appears in the system, the main feed switch can be
          quickly disconnected;
          ◆ High-pressure side oil-immersed load switch or SF6 load switch, which can be upgraded electrically, laying the foundation for realizing distribution
          network automation;
          ◆ Oil-immersed S9 or S11 series transformer with better performance.


          The main technical parameters
           Project                                                Unit                  Parameter
           Rated voltage                                           kV          10/0.4(High pressure / low pressure)
           Maximum operating voltage                               kV               12(High pressure side)
           Rated frequency                                         Hz                      50
           Rated Capacity                                         kVA                     50-1600
           1 minute power frequency withstand voltage              kV                       35
           Lightning impulse voltage                               kV                       75
           Cooling method                                                           Oil leaching from cold
           High voltage backup fuse breaking current               kA                      50
           Plug-in fuse breaking current                           kA                      2.5
           Ambient temperature                                     ℃                     -35~+40
           Coil allows temperature rise                            ℃                        65
           No load regulation                                                         ±5%或 ±2×2.5%
           Noise level                                            db                       50
           Protection class                                                                IP43


          Box variable structure
          The product box structure is composed of three parts: high-pressure interval, low-pressure interval and oil tank interval. The high-voltage compartment
          includes high-voltage cable accessories, load switches, no-load voltage-regulating tap-changers, plug-in fuses, pressure relief valves, oil level gauges,
          oil temperature gauges, and oil drain valves. The low voltage interval includes low voltage bushing, low voltage meter, circuit breaker, and capacitance
          compensation. The oil tank compartment includes the transformer winding and iron core, radiator, high-voltage load switch and fuse are all in the oil
          tank, according to the program needs tank variable structure can design the finished font or mesh font see the figure below.













                      5. High pressure room  1. High voltage insulating sleeve  9. Low voltage bushing  13. Oil level gauge
                      6. Low pressure room  2. Load switch    10. Oil thermometer  14. Oil injection hole
                      7. Radiator     3. Tap switch           11. Pressure gauge  15. Plug-in fuse
                      8. Drain valve  4. Transformer          12. Pressure relief valve  16. Hook


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