Pad-mounted Transformer

Pad-mounted transformers, also known as American substations, are an integrated power station that combines high-voltage control, protection, transformers and power distribution equipment according to specific wiring requirements. Transformer bodies, high load breaking switches and fuses are all set in fully sealed transformer oil tanks, and the transformer oil features an outstanding insulation performance and heat dissipation performance. Pad-mounted transformers feature a small size and light weight, as well as a safe, convenient installation and maintenance. They are widely used for outdoor power supply in cities, residential areas, hospitals, factories, mines, airports and railways.

Working conditions

Altitude: ≤1000m
Wind speed: ≤35m/S (≤700pa)
Ambient temperature: -35ºC - +40ºC
Relative humidity: daily average humidity≤95%, monthly average humidity≤95%
Quakeproof: horizontal acceleration≤0.4m/s2
vertical acceleration≤0.15mm/s2
Installation site slop: ≤3º
Installation site: the place without fire and explosion danger, serious pollution, chemical corrosion and strenuous vibration



Features

Small size and compact structure. The area covered is only 1/3 to 1/5 that of European substations of the same capacity.
Low noise and strong overload capacity S11 series transformers: The system includes high-voltage chambers, low voltage chambers, and transformers. The high voltage components feature fuse protection and are used for loop networks and terminals. Power supply methods are also flexible.
High-voltage chambers are equipped with oil humidity gauges, oil level gauges, pressure relief valves and oil discharging valves to monitor transformer operation states.
High voltage inlets use cable plugs and can be equipped with zinc oxide arresters. We will meet your needs for a variety of low voltage outputs and low voltage measurements, with shunt outlets added according to customer requirements.
The transformers utilize corrugated plates for heat dissipation. These plates are treated using a special technology for an exceptional corrosion resistance and a variety of shapes and structures. Common plates and stainless-steel plates can be chosen according to your needs.


Technical parameters

Model	Rated capacity （KVA）	Voltage and tapping link rangeHigh voltage（KV）	Voltage and tapping link rangeTapping link range（%）	Voltage and tapping link rangeLow voltage（KV）	Connection and vector group	No-load losses（W）	Load losses（W）	No-load current（%）	Short circuit impedance（%）	Dimensions L×W×H (mm)
ZGS11-100	100	6 6.3 6.6 10 10.5 11	±5 ±2×2.5	0.4	Yyn0 Dyn11	200	1580/1500	1.8	4	11830x1355x1735
ZGS11-125	125					240	1890/1800	1.7		1830x1365x1735
ZGS11-160	160					270	2310/2200	1.6		1830x1375x1735
ZGS11-200	200					340	2730/2600	1.5		1830x1375x1735
ZGS11-250	250					400	3200/3050	1.4		1830x1405x1735
ZGS11-315	315					480	3830/3650	1.4		1830x1425x1735
ZGS11-400	400					570	4520/4300	1.3		1830x1435x1805
ZGS11-500	500					680	5410/5150	1.2		1830x1445x1860
ZGS11-630	630					810	6200	1.1	4.5	1830x1445x1860
ZGS11-800	800					980	7500	1		1830x1490x1860
ZGS11-1000	1000					1150	10300	1		1830x1675x2005
ZGS11-1250	1250					1360	12000	0.9		2100x1845x2035
ZGS11-1600	1600					1640	14500	0.8		2100x1885x2135