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Help CenterPad-mounted Secondary Substation - American Type
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Pad-mounted Secondary Substation - American Type
Ⅰ.Overview
For American type pad-mounted secondary substation, the transformer iron, winding, medium voltage load switch and fuse switch are all enclosed in one compartment. The advantage for this type of substation is very compact, simplified structure, easy assembling, flexible operation, which can be applied indoor or outdoor.
We have three types: ZGS13-400KVA; ZGS13-500KVA;ZGS13-630KVA
Ⅱ.Environmental conditions
1. elevation: over 1,000 m above;
2. Ambient temperature: higher than + 40℃ and lower than-25℃; upper average daily temperature difference exceeds 35℃; annual average temperature difference exceeds 20℃;
3. More than 35m/s in the wind speed;
4. The installation site has no explosion danger, no chemical corrosion and violent vibration;
5. Cooling mode: Air self-cooling (AN).
Ⅲ.Specification
Item |
Unit |
Specification |
Rated voltage |
Kv |
10/0.4(HV/LV) |
Rated Capacity |
kVA |
100~1250 |
Maximum operating voltage |
Kv |
12(HV side) |
Rated frequency |
Hz |
50 |
Rated capacity |
Kva |
50-1600 |
1min Power-frequency withstand voltage |
Kv |
35 |
Lightning impulse withstand voltage |
Kv |
75 |
Cooling-down method |
ONAN |
|
High voltage backup fuse open current |
Ka |
50 |
Plug-in fuse open current |
Ka |
2.5 |
Ambient temperature |
℃ |
-35~+45 |
The coil allows for a temperature rise |
℃ |
65 |
No-load pressure adjustment |
±5%(or)±2×2.5% |
|
Noise grade |
Db |
50 |
IP Rating |
IP43 |
Ⅳ.Features
1.Low noise, low loss, high reliability.
2.Small volume and compact structure to facilitate assembling.
3.Completely screened and insulated structure, double fuses protection, the fuses are dual-sensitive fuses(temperature-sensitive, current-sensitive).
4.Suitable for ring main and terminal power distribution networks.
5. Cable connector structure is used for incoming line, which gives the characteristics of disconnecting switch, it is easy and flexible in operation.
6.The three-phase three-column structure is employed for transformers, and the step-type seams (Step-lap) process is used for the core, so the transformer has low noise and low loss, good anti-short-circuit and overload abilities.
7.High fire point insulating oil is employed, the surface of the transformer is treated to have the abilities of fungus resistance, moisture resistance and salt spray resistance.
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