The product conforms to the technical parameters and requirements of China National Standard GB1094 and GB/T6451, and a series of significant innovation is applies in aspects of material, design and structure. It has the features of high efficiency and low loss. It can save a lot of operation cost, and the social benefits are very significant. In conclusion, it is a nationally promoted new product and it is deeply favored by customers.

The oil distribution transformer conforms to the technical parameters and requirements of China National Standard GB1094 and GB/T6451, and a series of significant innovation is applies in aspects of material, design and structure. The oil immersed distribution transformer has the features of high efficiency and low loss. It can save a lot of operation cost, and the social benefits are very significant. In conclusion, it is a nationally promoted new product and it is deeply favored by customers.

Work condition

Installation type: indoor/outdoor/type

• Ambient temperature: -25°C ~+40°C
• Altitude: ≤1000m
• Installation site: in places without corrosive gases and obvious dusts.

Reference standards

• Power transformer: GB1094.1 -2-1996,GB1094.3-2003,GB1094.5-2008
• Three-phase oil-immersed transformers: GB/T6451-2008

Performance characteristics

1.The features of this oil immersed power transformer are high efficiency and low loss. It can save a lot of operation cost, and the social benefits are very significant.

2.The iron cores are made of the imported high-conduction magnetism, cold-roll, and grain-oriented silicon-steel sheets. The iron cores and windings adopt the vacuum drying and vacuum oil-filling processes, which make the internal moisture down to the very low level.

3.The conservator is hermetically sealed, which make the internal running oil to insolate with oxygen and moisture efficiently.

4. The above features guarantee the transformer does not need to replace the oil during the operation, greatly decrease the maintenance cost, and prolong the service life.

Order information

Transformer type: Oil Immersed

Rated capacity: KVA

Number of phases: three-phase / single-phase 

High voltage: KV Low voltage: KV

Frequency: 50HZ / 60HZ 

Tapping range: ±4 x 2.5% / ±3 x 2.5% / other 

Connection group: YynO / Dyn11 / other 

Impedance voltage: standard / other

Technical parameters of S11-50-2500/33 series distribution transformers

Rated capacity (kVA)	Voltage combination (kV)			Connec ting group	No-load loss y (w)	Load-loss (W)(75℃)	Short ciruit impedance (%)	No-load current (%)	Weight (kg)			Overail dimension (mm)	Gauge (mm)
	High voltage (kV)	Tapping (%)	Low voltage (kV)						Tare	Oil	Total	Length x Width * Height
50	35	±5%	0.4	Dyn11  YynO	210	1270/1210	6.5	2	230	320	650	1150x720x1200	550×550
100					290	2120/2020		1.8	380	400	980	1200x740x1300	550×550
125					340	2500/2380		1.7	440	430	1100	1250x780x1380	550×550
160					360	2970/2830		1.6	510	460	1200	1300x800x1400	660×660
200					430	3500/3330		1.5	600	500	1400	1400x840x1500	660×660
250					510	4160/3960		1.4	690	530	1500	1530x860x1580	660×660
315					610	5010/4770		1.4	800	570	1670	1600x890x1630	660×660
400					730	6050/5760		1.3		650	1950	1730x950x1700	660×660
500					860	7280/6930		1.2	1070	710	2300	1800x980x1800	820×820
630					1040	8280		1.1	1300	830	2650	1900x1000x1850	820×820
800					1230	9900		1	1600	900	3100	1950x1060x1900	820×820
1000					1440	12150		1	1800	1080	3700	1980x1100x1950	820×820
1250					1760	14670		0.9	2100	1150	4000	2010x1160x1980	820×820
1600					2120	17550		0.8	2550	1250	4730	2040x1310x2000	820×820
2000					2500	20680		0.7	3100	1400	5600	2170x1380x2700	1070×1070
2500					2975	24500		0.6	3650	1500	6300	2300x1450x2900	1070×1070