S13‑M Type Oil‑Immersed Distribution Transformer

Features :
Custom Engineered Solution：Custom capacity, voltage, cooling mode, copper/aluminum winding for your substation project
✅Fully sealed oil‑immersed structure, maintenance‑free
✅ Customizable voltage & capacity for distribution network
✅On‑board voltage adjustment tap
✅Stainless steel hardware for outdoor long‑time operation
✅High‑grade silicon‑steel core for ultra‑low no‑load loss
✅Copper or aluminum windings optional
✅Low noise, low partial discharge, high efficiency
✅Compliant with IEC & GB standard

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Main Overview：

The S13‑M series is high‑efficiency fully‑sealed oil‑immersed distribution transformer, upgraded based on S11 series.
By adopting new silicon‑steel material and optimized core‑coil structure, it greatly reduces no‑load loss and operating noise. Its noise level is averagely 20% lower than conventional distribution transformers. Fully sealed structure avoids oil oxidation and moisture ingress, achieving maintenance‑free operation, widely used for urban‑rural power distribution, industrial and commercial power supply.

Meaning of Model Number：

Meaning of Model Number	S	M	(B)	13	-	□	/	□
	Three-phase	Fully sealed	For capacity of 400kVA and above, low-voltage foil wound coils can be used.	Performance level code		Rated capacity kVA		Voltage class kV

Performance parameters of main products in the S13-type 10kV two-winding series：

Model	Rated capacity （kVA）	Vector group	Voltage combination（kV）			No-load loss （W）	Dy Load loss（W）75℃ （A）	No-load current （%）	Impedance voltage （%）
Model	Rated capacity （kVA）	Vector group	High voltage	Tapping range	Low voltage	No-load loss （W）	Dy Load loss（W）75℃ （A）	No-load current （%）	Impedance voltage （%）
S13-M-30	30	Dyn11	10	±2x2.5%	0.4	80	630	1.5	4
S13-M-50	50					100	910	1.3
S13-M-63	63					110	1090	1.2
S13-M-80	80					130	1310	1.2
S13-M-100	100					150	1580	1.1
S13-M-125	125					170	1890	1.1
S13-M-160	160					200	2310	1
S13-M-200	200					240	2730	1
S13-M-250	250					290	3200	0.9
S13-M-315	315					340	3830	0.9
S13-M-400	400					410	4520	0.8
S13-M-500	500					480	5410	0.8
S13-M-630	630					570	6200	0.6	4.5
S13-M-800	800					700	7500	0.6
S13-M-1000	1000					830	10300	0.6
S13-M-1250	1250					970	12000	0.5
S13-M-1600	1600					1170	14500	0.5
S13-M-2000	2000					1360	18300	0.4	5
S13-M-2500	2500					1600	21200	0.4	5

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