Distribution Transformer (10kV, 20kV)

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Product Introduction

Products structure and technical features

Electricity is transferred to users from power stations through transmission and distribution system's voltage conversion. Firstly transferred via high voltage transmission lines, then lower the voltage in substations, lastly be fit to use. Distribution transformer locates closely to terminal users will lower voltage at a suitable level. Transformer , lower voltage at a level which is suitable for electrical equipments, is called distribution transformer, used in daily lighting and factory producing, low voltage is usually less than 0.4kv.In addition , distribution transformer's capacity is small, usually less than 3150kVA; and primary voltage is also low, at less than 35kV.

Our distribution transformer adopt "CAD" design concept and its performance is accord with IEC60076,GB1094,GB/T6451.The core is manufactured with high quality cold rolled grain-oriented silicon steel, and steps overlapping structure is used for core manufacture, after overlapping, brush special hardener to make cores solid, thus to effectively reduce no-load loss and noise. The oil tank is corrugated structure, produced by our factory's oil tank automatic production line; surface pre-treatment solution and coated powder all use high-quality brand products; firstly be shot blasted, then spray powder, at last solidified in high temperature, so our oil tank has strong corrosion resistance. Winding is manufactured with high strength enameled wires(or paper covered wires),ampere-turns evenly distribute, insulation structure is reasonable, so winding's short circuit impedance is excellent. The body of distribution transformer adopts suspended structure, all sealing surface use quality acrylic rubber, can effectively prevent cold aging.

Technical Parameter and features

Sheet 1, Basic performance parameter of S11 type 10kV three-phase oil-immersed distribution transformer

Rated capacity(kVA)	Rated voltage(kV)		Vector group	No-load current(%)	Loss(W)		Short circuit impedance	Outline dimensions(mm)			Weight(kg)			Gage horizontal* vertical (mm)
	H.V.	L.V.			No load	With load		L	W	H	body weight	oil weight	total
	H.V.	L.V.			No load	With load		L	W	H	body weight	oil weight	total
10	6.0 6.3 10 ±5% or ±2*2.5%	0.4	Yyn0 Dyn11	3.8	55	310	4.0	615	600	945	110	50	245	350
20				3.0	80	475		750	615	975	125	55	290	350
30				2.1	100	600		1025	625	995	145	67	330	400
50				2.0	130	870		1075	640	1025	224	90	410	400
63				1.9	150	1040		1125	665	1065	240	105	480	400
80				1.8	180	1250		1150	675	1105	328	120	560	400
100				1.6	200	1500		1180	695	1115	340	154	590	400
125				1.5	240	1800		1200	705	1205	390	168	680	550
160				1.4	280	2200		1235	725	1225	499	179	840	550
200				1.3	340	2600		1295	745	1255	592	188	960	550
250				1.2	400	3050		1365	755	1275	724	245	1120	550
315				1.1	480	3650		1330	755	1335	712	300	1150	550
400				1.0	570	4300		1395	780	1375	953	320	1430	550
500				1.0	680	5150		1465	825	1455	1120	340	1690	660
630				0.9	810	6200	4.5	1565	845	1475	1289	440	1960	660
800				0.8	980	7500		1685	925	1575	1430	490	2350	820
1000				0.7	1150	10300		1855	1095	1685	1790	560	2720	820
1250				0.6	1360	12000		1925	1195	1715	2080	650	3300	820
1600				0.6	1640	14500		1995	1235	1805	2300	720	3800	820
2000				0.6	1940	18300		2155	1275	1915	3130	790	5145	820
2500				0.5	2290	21200	5.5	2265	1385	1945	4198	930	6420	1070

Sheet 2, Basic performance parameter of S13 type 10 kV three-phase oil-immersed distribution transformer

Rated capacity(kVA)	Voltage group and tapping range			Vector group	No-load loss kW	With load kW	No load current %	Short circuit impedance	Outline dimensions(mm)			Weight(kg)		Gage horizontal* vertical (mm)
	H.V. kV	H.V. tapping range	L.V. kV						L	W	H	oil weight	oil weight
	H.V. kV	H.V. tapping range	L.V. kV						L	W	H	oil weight	oil weight
30	6 6.3 10 10.5 11	±5 ±2*2.5	0.4 0.69	Yyn0 Dyn11	0.08	0.63	2.1	4.0	1070	740	1380	100	420	400*400
50					0.10	0.91	2.0		1070	740	1425	125	515	400*400
63					0.11	1.09	1.9		1110	760	1430	135	570	550*550
80					0.13	1.31	1.8		1140	780	1450	140	605
100					0.15	1.58	1.6		1155	785	1480	150	670
125					0.17	1.89	1.5		1160	790	1520	160	750
160					0.20	2.31	1.4		1230	815	1535	185	890
200					0.24	2.73	1.3		1260	830	1585	220	1000
250					0.29	3.20	1.2		1310	860	1640	230	1090	660*660
315					0.34	3.83	1.1		1350	860	1680	255	1320
400					0.41	4.52	1.0		1390	880	1740	275	1490
500					0.48	5.41	1.0		1530	940	1860	315	1650
630					0.57	6.20	0.9	4.5	1630	1050	1845	365	2090	820*820
800					0.70	7.50	0.8		1785	1165	1985	415	2700
1000					0.83	10.30	0.7		2280	1180	2220	500	3250
1250					0.97	12.00	0.6		2420	1220	2560	560	3700
1600					1.17	14.50	0.6		2460	1320	2605	640	4400
2000					1.55	18.30	0.5	5.5	2480	2400	2940	840	5450	1070*1070
2500					1.83	21.20	0.4	5.5	2480	2620	3040	980	6220	1070*1070

Sheet 3, Basic performance parameter of S11-M-30-2500/20 type distribution transformer

Rated capacity(kVA)	Voltage group and tapping range			Vector group	No-load loss kW	With load kW	No load current %	Short circuit impedance	Outline dimensions(mm)			Weight(kg)		Gage horizontal* vertical (mm)
	H.V. kV	H.V. tapping range	L.V. kV						L	W	H	oil weight	oil weight
	H.V. kV	H.V. tapping range	L.V. kV						L	W	H	oil weight	oil weight
30	20	±5 ±2*2.5	0.4	Dyn11	0.09	0.66	2.1	5.5	1040	600	1040	75	350	400*400
50					0.13	0.96	2.0		1040	600	1085	90	445	400*400
63					0.15	1.145	1.9		1080	620	1090	100	500	550*550
80					0.18	1.37	1.8		1110	640	11110	105	535
100					0.20	1.65	1.6		1235	800	1210	120	580
125					0.24	1.98	1.5		1245	810	1220	125	660
160					0.28	2.42	1.4		1265	830	1230	130	700
200					0.34	2.86	1.3		1140	720	1330	195	835
250					0.40	3.35	1.2		1325	850	1490	410	1110	660*660
315					0.48	4.01	1.1		1380	850	1725	420	1610
400					0.57	4.73	1.0		1400	885	1810	430	1720
500					0.68	5.66	1.0		1500	890	1850	480	1940
630					0.81	6.82	0.9	6.0	1645	970	1850	490	2055	820*820
800					0.98	8.25	0.8		1755	1025	1890	520	2600
1000					1.15	11.33	0.7		2270	1060	1890	585	2870
1250					1.35	13.20	0.6		2400	1120	2040	620	3560
1600					1.63	15.95	0.6		2460	1220	2085	690	4260
2000					1.95	19.14	0.6		2480	2400	2940	860	5550
2500					2.34	22.22	0.5		2480	2620	3040	990	6320

Sheet 4, Basic performance parameter of S11-M-30-2500/20(10) type distribution transformer

Rated capacity(kVA)	Voltage group and tapping range			Vector group	No-load loss Kw	With load Kw	No load current %	Short circuit impedance	Outline dimensions(mm)			Weight(kg)		Gage horizontal* vertical (mm)
	H.V. Kv	H.V. tapping range	L.V. Kv						L	W	H	oil weight	oil weight
	H.V. Kv	H.V. tapping range	L.V. Kv						L	W	H	oil weight	oil weight
30	20（10）	±5 ±2*2.5	0.4	Dyn11	0.09	0.66	2.1	5.5	1040	600	1070	75	360	400*400
50					0.13	0.96	2.0		1040	600	1095	90	460	400*400
63					0.15	1.145	1.9		1080	620	1100	100	520	550*550
80					0.18	1.37	1.8		1110	640	1120	105	555
100					0.20	1.65	1.6		1235	800	1220	120	590
125					0.24	1.98	1.5		1245	810	1230	125	670
160					0.28	2.42	1.4		1265	830	1250	130	720
200					0.34	2.86	1.3		1140	720	1350	195	855
250					0.40	3.35	1.2		1325	850	1500	410	1130	660*660
315					0.48	4.01	1.1		1380	850	1740	420	1630
400					0.57	4.73	1.0		1400	885	1820	430	1735
500					0.68	5.66	1.0		1500	890	1870	480	1990
630					0.81	6.82	0.9	6.0	1645	970	1875	490	2055	820*820
800					0.98	8.25	0.8		1755	1025	1880	520	2600
1000					1.15	11.33	0.7		2270	1060	1880	585	2870
1250					1.35	13.20	0.6		2400	1120	2040	620	3560
1600					1.63	15.95	0.6		2460	1220	2095	850	4385
2000					1.95	19.14	0.6		2480	2400	2940	860	5550
2500					2.34	22.22	0.5		2480	2620	3040	990	6320