We are actively involved in manufacturing, exporting and trading a quality range of Distribution Transformer in Ningbo, Zhejiang, China.
Rated voltage: 6.6kV,11kV,13.8kV
Capacity: 10kVA-2000kVA
Vector group: Dyn11
Tapping range: +-2x2.5%
No-load loss: low
On-load loss: low
Material: copper
12~36kV  Three-phase oil immersed transformer
NINGBO TIANAN (GROUP) CO., LTD.
1. General
(1) Application:
    >> 12, 24,36KV class transformers are widely used in power transmission and distribution stations,
          industry plants, Generation Setup Unit (GSU).
    >> They have the characteristic of high efficiency, low loss and maintenance free.      
(2) Type and Rating
     **Capacity range :50-50000KVA.
     **Secondary voltage: 415V ,400V etc.
     **Frequency :50Hz ,60Hz.
     **Type: Single phase ,three phase.
     **No-load tap changer and on-load tap changer.
     **ONAN and ONAF.
     **Set-up and set-down type.
(3) Standard:  IEC60076-1, IEC60076-2, IEC60076-5, IEC60317, ANSI, IEEE, AS, etc.

. Technical Data of Typical Products
>S9, S10 series 10KV three phase off -load tap changer distribution transformer

Type	Rating KVA	On-load loss (w)	Load loss (w)	I (%)	UK (%)	Dimension (mm)			Weight (kg)
						a	b	c
S9-M-50/11	50	170	870	2.0	4.0	1215	660	1170	430
S9-M-250/11	250	560	3050	1.2	4.0	1190	815	1370	1115
S9-M-400/11	400	800	4300	1.0	4.0	1515	770	1580	1380
S9-M-500/11	500	960	5050	1.0	4.0	1635	840	1610	1600
S9-M-1000/11	1000	1700	10300	0.7	4.5	1960	1095	1960	2860
S9-M-2500/11	2500	3300	23000	0.55	5.5	2230	2305	2445	5660
S10-M-30/10	30	110	600	1.8	4.0	870	645	1025	310
S10-M-50/10	50	140	870	1.7	4.0	1090	650	1080	395
S10-M-80/10	80	200	1250	1.6	4.0	1140	675	1110	490
S10-M-100/10	100	240	1500	1.5	4.0	1185	690	1130	560
S10-M-125/10	125	280	1800	1.4	4.0	1205	710	1180	670
S10-M-160/10	160	340	2200	1.3	4.0	1255	720	1200	780
S10-M-200/10	200	400	2600	1.2	4.0	1295	740	1215	875
S10-M-250/10	250	470	3050	1.1	4.0	1340	755	1260	1115
S10-M-315/10	315	560	3650	1.0	4.0	1400	770	1320	1280
S10-M-400/10	400	680	4300	0.9	4.0	1500	860	1400	1490
S10-M-500/10	500	810	5150	0.9	4.0	1575	895	1430	1740
S10-M-630/10	630	1020	6200	0.8	4.5	1660	930	1545	2110
S10-M-800/10	800	1190	7500	0.7	4.5	1830	1070	1590	2625
S10-M-1000/10	1000	1450	10300	0.6	4.5	1935	1175	1685	2860
S10-M-1250/10	1250	1650	12000	0.6	4.5	1960	1170	1730	3330
S10-M-1600/10	1600	2040	14500	0.5	4.5	2325	1220	2120	3765
S10-M-2000/10	2000	2140	17820	0.5	4.5	2395	1260	2225	4530

>>S11 series 20KV three phase off -load tap changer distribution transformer

TYPE	Voltage ratio(kV)	Connection	No load Loss (W)	Load loss (W)	Io (%)	UK (%)	Dimensions (mm)						Weight (Kg)
							a	b	c	d	e	f
S11-M-30/20	20(10) ±5%/0.4	Yyn0 Dyn11	100	690/ 660	2.1	5.5	1100	700	1240	14	400	400	640
S11-M-50/20			130	1010/ 960	2.0		1130	710	1260	14	400	450	710
S11-M-63/20			150	1200/1150	1.9		1160	740	1270	14	400	450	780
S11-M-80/20			180	1440/1370	1.8		1200	770	1280	14	400	450	860
S11-M-100/20			200	1730/ 1650	1.6		1220	800	1300	14	400	450	900
S11-M-125/20			240	2080/ 1980	1.5		1270	840	1330	19	550	450	970
S11-M-160/20			290	2540/ 2420	1.4		1320	870	1350	19	550	550	1100
S11-M-200/20			340	3000/ 2860	1.3		1360	900	1380	19	550	550	1240
S11-M-250/20			400	3520/ 3350	1.2		1430	910	1430	19	550	650	1420
S11-M-315/20			480	4210/ 4010	1.1		1460	920	1450	19	550	650	1570
S11-M-400/20			570	4970/ 4730	1.0		1490	940	1470	19	660	750	1740
S11-M-500/20			680	5940/ 5660	1.0		1570	970	1540	19	660	750	1950
S11-M-630/20			810	6820	0.9	6.0	1650	1000	1580	19	660	850	2290
S11-M-800/20			980	8250	0.8		1750	1070	1650	19	820	850	2690
S11-M-1000/20			1150	11330	0.7		1830	1170	1690	19	820	850	2880
S11-M-1250/20			1380	13200	0.7		1900	1200	1790	19	820	850	3400
S11-M-1600/20			1660	15950	0.6		1950	1250	1850	19	820	900	4100

35kV three phase Off-load tap changer power transformer

Capacity KVA	Voltage and tap range			Connection	No-load loss (kW)	Load loss (KW)	NO-load current (%)	Impedance (%)	Dimensions (mm) LxWxH
	HV (kV)	MV (kV)	LV (kV)
50	35	± 5	0.4	Dyn11 Yyn0	0.21	1.27/1.21	2.00	6.5	1100x845x1715
100					0.29	2.12/2.02	1.80		1190x915x1780
125					0.34	2.50/2.38	1.70		1220x1040x1780
160					0.36	2.97/2.83	1.60		1240x1070x1810
200					0.43	3.50/3.33	1.50		1380x780x1875
250					0.51	4.16/3.96	1.40		1540x880x1820
315					0.61	5.01/4.77	1.40		1440x800x1975
400					0.73	6.05/5.76	1.30		1660x825x1995
500					0.86	7.28/6.93	1.20		1710x865x2030
630					1.04	8.28	1.10		1630x1235x2070
800					1.23	9.90	1.00		1655x1415x2120
1000					1.44	12.15	1.00		1860x1435x2220
1250					1.76	14.67	0.90		1890x1640x2260
1600					2.12	17.55	0.80		2050x1720x2390
630			3.15 6.3 10.5	Yd11	1.04	8.28	1.10		1630x1235x2070
800					1.23	9.90	1.00		1655x1415x2120
1000					1.44	12.15	1.00		1860x1435x2220
1250					1.76	14.67	0.90		1890x1640x2260
1600					2.12	17.55	0.80		2050x1720x2390
2000					2.72	19.35	0.70		2400x1900x2410
2500					3.20	20.70	0.60		2500x1930x2700
3150	35~ 38.5	± 5	3.15 6.3 10.5		3.80	24.30	0.56	7.0	2600x2100x2800
4000					4.52	28.80	0.56		2830 x2350x2855
5000					5.40	33.03	0.48		2930x2480x2930
6300					6.56	36.90	0.48	7.5	3150x2330x3220
8000		± 2 x 2.5	3.15 3.3 6.3 6.6 10.5 11	YNd11	9.00	40.50	0.42		3295x3110x3345
10000					10.88	47.70	0.42		3450x3210x3440
12500					12.60	56.70	0.40	8.0	3620x3255x3500
16000					15.20	69.30	0.40		3980x3420x3650
20000					18.00	83.70	0.40		4030x3470x3690
25000					21.28	99.00	0.32		5050x4640x3930
31500					25.28	118.8	0.32		5120x4800x4030