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
46