Product Description

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.

Payment Terms︰ TT/LC/DP/DA

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