10kV、20kV oil-immersed transformers

Product Overview

10kV & 20kV oil-immersed transformers are mainstream power distribution transformation equipment. With insulating oil for insulation and heat dissipation, they feature stable operation and easy maintenance. They can be installed standalone or integrated into box-type substations, widely applied in power grids, industrial parks, photovoltaic projects, municipal works and industrial & mining facilities to meet various medium-voItage power distribution demands.

Model and Meaning

Transformer Product Standards

GB 1094.1-2013

GB 1094.2-2013

GB 1094.3-2017

GB 1094.5-2008

GB/T6451-2015

GB/T 7595-2017

GB/T 25289-2010

JB/T 3837-2016

Normal Service Conditions for Transformer

Altitude: not exceeding 1000m

Ambient temperature: Maximum air temperature: +40℃

Maximum daily average air temperature: +30℃

Maximum annual average air temperature: +20℃

Minimum outdoor air temperature: −25℃

Power voltage waveform approximates sine wave; three-phase power voltage is approximately symmetrical Installation environment: no obvious contamination

Seismic ground acceleration ag: horizontal value below 3m/s², vertical value below 1.5m/s² Indoor usage

Note: If special service conditions outside the above normal ranges are required, relevant conditions shall be stated when requesting quotation and placing orders

Technical Parameters

S11 Series 10ky distribution transformer

30kva 2500kva 3-phase duplex winding non-excitedtap-changing distribution transformer

Rated capacity(kVA)	Voltage Combination and Tap range			Vector Group Symbol	Loss(kW)		No-load current (%)	Impedance Voltage (%)	Weight (kg)			Boundary Dimension (mm) (L×W×H)		Gauge vertical / horizontal (mm)
	HV(kV)	% HV Tap Range	LV(kV)		No-load	Load			Body	Oil	Total	Omniseal	Un-omniseal
30	6 6.3 10 10.5 11	±5 ±2×2.5	0.4	Dyn11 Yzn11 Yyn0	0.1	0.63/0.60	2.3	4.0	150	750	340	730×780×930	950×720×1000	400/400
50					0.13	0.91/0.87	2		220	950	440	800×750×965	1020×700×1035	400/400
63					0.15	1.09/1.04	1.9		260	110	490	820×780×970	1140×740×1040	400/400
80					0.18	1.31/1.25	1.9		300	120	580	840×800×1000	1060×720×1070	400/400
100					0.2	1.58/1.50	1.8		350	120	660	850×840×1010	1105×760×1110	450/400
125					0.24	1.89/1.80	1.7		400	130	700	860×900×1080	1120×800×1150	550/550
160					0.28	2.31/2.20	1.6		480	160	840	1220×840×1100	1440×760×1290	550/550
200					0.34	2.73/2.60	1.5		560	170	920	1250×860×1150	1470×780×1350	550/550
250					0.4	3.20/3.05	1.4		640	180	1040	1260×850×1220	1480×780×1420	550/550
315					0.48	3.83/3.65	1.4		800	200	1220	1340×900×1200	1560×840×1400	550/550
400					0.57	4.52/4.30	1.3		980	240	1460	1380×900×1260	1600×840×1520	550/550
500					0.68	5.41/5.15	1.2		1130	280	1710	1520×1000×1330	1740×960×1590	660/660
630				Dyn11 Yyn0	0.81	6.2	1.1	4.5	1350	330	2050	1580×1040×1270	1900×1040×1600	660/660
800					0.98	7.5	1		1610	400	2460	1650×1160×1400	1970×1160×1730	820/820
1000					1.15	10.3	1		1690	450	3680	1750×1240×1460	2070×1240×1970	820/820
1250					1.36	12	0.9		1910	500	3050	1800×1240×1550	2100×1240×1870	820/820
1600					1.64	14.5	0.8		2330	590	3800	1830×1800×1930	1830×1800×1930	820/820
2000					1.96	17.8	0.6		2750	780	4660	1950×1900×2080	1950×1900×2080	820/820
2500					2.31	20.7	0.5		3350	920	5440	2060×1930×2130	2160×1930×2130	1070/1070

Note 1: The load loss above the oblique in the table applies to Dyn11 or Yzn11; the load loss below the oblique line applies to Yyn0.

S11、SZ11 Series 10kv power transformer

630kva~6300kva 3-phase Duplex Winding Non-excited Tap-changing Power Transformer

Rated capacity (kVA)	Voltage Combination and Tap range			Vector Group Symbol	Loss(kW)		No-load current (%)	Impedance Voltage (%)	Weight (kg)			Gauge vertical / horizontal (mm)
	HV(kV)	% HV Tap Range	LV(kV)		No-load	Load			Body	Oil	Total
630	6 6.3 10 10.5 11	±5 ±2×2.5	3 3.15 6.3	Yd11	0.84	6.93	1.1	5.5	1780	450	2710	750/660
800					1.02	8.46	1		2100	520	3310	850/660
1000					1.2	9.92	1		2580	600	3860	850/820
1250					1.42	11.8	0.9		2880	700	4370	850/820
1600					1.71	14.11	0.8		3400	780	4760	900/820
2000					2.04	16.93	0.8		3800	890	5570	900/820
2500					2.4	19.67	0.8		4350	960	6670	1070/1070
3150					2.84	23.09	0.7		4940	1180	8500	1070/1070
4000	10 10.5 11		3.15 6.3		3.48	27.36	0.7		5900	1580	9850	1070/1070
5000					4.16	31.38	0.7		6850	1760	11580	1070/1070
6300					4.96	35.06	0.6		7920	1910	13650	1070/1070

Note 1: According to requirements, the transformer can supply HV tap change ±2×2.5%

200kva~2500kva 3-phase duplex winding on-load tap-changing distribution transformer

Rated capacity (kVA)	Voltage Combination and Tap range			Vector Group Symbol	Loss(kW)		No-load current (%)	Impedance Voltage (%)	Weight (kg)			Gauge vertical / horizontal (mm)
	HV(kV)	HV Tap Range %	LV(kV)		No-load	Load			Body	Oil	Total
200	6 6.3 10	±4×2.5	0.4	Dyn11 Yyn0	0.39	2.91	1.5	4	980	260	1530	650/550
250					0.45	3.42	1.4		1070	310	1740	650/550
315					0.54	4.1	1.4		1320	350	1980	650/550
400					0.65	4.96	1.3		1580	430	2270	750/550
500					0.77	5.9	1.2		1750	450	2500	750/660
630					0.97	7.27	1.1		1900	530	2920	750/660
800					1.13	8.89	1	4.5	2150	600	3320	850/660
1000					1.38	10.43	1		2480	680	3710	850/820
1250					1.58	12.4	0.9		2620	770	4200	850/820
1600					1.94	14.79	0.8		3100	880	4850	900/820
2000					2.27	18.69	0.6		3980	1080	5880	900/820
2500					2.52	21.74	0.6		3950	1300	6370	1070/1070

Note 1: According to requirements, the transformer can supply HV winding voltage 10.5kV and 11 kv.

Note 2: According to requirements, the transformer can supply LV 0.69kV

S13 Series 10ky distribution transformer

30kva~2500kva 3-phase duplex winding non-excited tap-changing dlistribution transformer

Rated capacity (kVA)	Voltage Combination and Tap range			Vector Group Symbol	Loss(kW)		No-load current (%)	Impedance Voltage (%)	Weight (kg)			Boundary Dimension (mm)		Gauge vertical / horizontal (mm)
	HV(kV)	HV Tap Range %	LV(kV)		No-load	Load			Body	Oil	Total	Omniseal	Un-omniseal
30	6 6.3 10 10.5 11	±5 ±2×2.5	0.4	Dyn11 Yzn11 Yyn0	0.08	0.63/0.60	2.3	4.0	130	700	300	710×710×930	930×580×1000	400/400
50					0.1	0.91/0.87	2		200	800	400	730×710×1010	950×600×1080	400/400
63					0.11	1.09/1.04	1.9		240	900	450	750×730×1040	970×630×1100	400/400
80					0.13	1.31/1.25	1.9		280	100	520	760×740×1060	980×640×1120	400/400
100					0.15	1.58/1.50	1.8		310	100	550	770×750×1130	1000×650×1200	450/400
125					0.17	1.89/1.80	1.7		370	120	640	800×770×1150	1030×670×1220	550/550
160					0.2	2.31/2.20	1.6		440	130	740	820×780×1240	1050×680×1310	550/550
200					0.24	2.73/2.60	1.5		500	140	810	840×810×1260	1070×700×1330	550/550
250					0.29	3.20/3.05	1.4		610	160	970	870×850×1300	1100×750×1370	550/550
315					0.34	3.83/3.65	1.4		750	200	1200	1180×820×1390	1400×720×1460	550/550
400					0.41	4.52/4.30	1.3		900	240	1420	1260×840×1450	1480×760×1520	550/550
500					0.48	5.41/5.15	1.2		1050	250	1620	1300×860×1500	1560×800×1600	660/660
630				Dyn11 Yyn0	0.57	6.2	1.1		1240	280	1860	1370×890×1470	1630×930×1680	660/660
800					0.7	7.5	1	4.5	1510	340	2250	1430×930×1580	1960×930×1680	820/820
1000					0.83	10.3	1		1560	360	2410	1600×1100×1610	1860×1100×1720	820/820
1250					0.97	12	0.9		1910	420	2930	1690×1140×1750	1950×1140×1860	820/820
1600					1.17	14.5	0.8		2320	520	3630	1820×1650×2060	1820×1650×2060	820/820
2000					1.26	17.8	0.6		2820	660	4550	1920×1750×2160	1920×1750×2160	820/820
2500					1.49	20.7	0.5		3550	760	5470	2020×1910×2260	2020×1910×2260	1070/1070

Note 1: The load loss above the oblique in the table applies to Dyn11or Yzn 11; he bad loss below the oblique line applies to Yyn0.

 

S11 Series 20ky distribution transformer

Rated capacity (kVA)	Voltage Combination and Tap range			Vector Group Symbol	No-load Loss(kW)	Load Loss(kW)	No-load current (%)	Short-circuit Impedance Voltage (%)
	HV(kV)	HV Tap Range %	LV(kV)
30	20	±5	0.4	Dyn11 Yzn11 Yyn0	0.1	0.69/0.66	2.1	5.5
50					0.13	1.01/0.96	2
63					0.15	1.20/1.15	1.9
80					0.18	1.44/1.37	1.8
100					0.2	1.73/1.65	1.6
125					0.24	2.08/1.98	1.5
160					0.29	2.54/2.42	1.4
200					0.34	3.00/2.86	1.3
250					0.4	3.52/3.35	1.2
315					0.48	4.21/4.01	1.1
400					0.57	4.97/4.73	1
500					0.68	5.94/5.66	1
630					0.81	6.82	0.9	6.0
800					0.98	8.25	0.8
1000					1.15	11.33	0.7
1250					1.38	13.2	0.7
1600					1.66	15.95	0.6
2000					1.95	19.14	0.6
2500					2.34	22.22	0.5

Note:Rated capacity 5000kVA and below transformer, the load loss above the oblique line in the table applies to Dyn11 connection group, the load loss below the oblique line applies to Yyn0

S13 Series 20ky distribution transformer

30kva~2500kva 3-phase duplex winding non-excited tap-chnanging distribution transformer

Rated capacity (kVA)	Voltage Combination and Tap range			Vector Group Symbol	No-load Loss(kW)	Load Loss(kW)	No-load current (%)	Short-circuit Impedance Voltage (%)
	HV(kV)	HV Tap Range %	LV(kV)
30	20	±5	0.4	Dyn11 Yzn11 Yyn0	0.08	0.66/0.63	2.1	5.5
50					0.1	0.96/0.91	2
63					0.11	1.14/1.09	1.9
80					0.13	1.38/1.31	1.8
100					0.15	1.66/1.58	1.6
125					0.17	1.98/1.89	1.5
160					0.2	2.43/2.31	1.4
200					0.24	2.87/2.73	1.3
250					0.29	3.36/3.20	1.2
315					0.34	4.02/3.83	1.1
400					0.41	4.77/4.51	1
500					0.48	5.68/5.40	1
630					0.57	6.51	0.9	6
800					0.7	7.88	0.8
1000					0.83	10.81	0.7
1250					0.97	12.6	0.7
1600					1.17	15.22	0.6
2000					1.26	19.74	0.6
2500					1.49	21.73	0.5

Note:Rated capacity 500kVA and below transformer, the load loss above the oblique line in the table applies to Dyn11 connection group; the load loss below the oblique line applies to Yyn0.