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Dry-type transformer

Epoxy resin cast dry-type transformers

Overview

This series of product is characterized by small partial discharge, low noise, less loss, good heat dissipation, strong dust prevention capacity, strong capacity against sudden short circuit, and high overload capacity. It is mainly applicable to commercial building, high-rise, airport, industrial and mining enterprises, power plant, petroleum platform, subway, tunnel and other important places with special fire prevention requirements. It can be also used together with the switch cabinet to compose of box-type substation.

Execution standard
Model
Performance
Parameters
Appearance

- GB/T 17211-1998 《Load Guidance of Dry Power Transformer》
- IEC 60076-11：2004 《Dry Power Transformer》
- GB 1094. 11-2007 《Dry Power Transformer》
- GB/T 10228-2008 《Technical Parameters and Requirements of Dry Power Transformer》
SC(B)9、10-30~2500/10、20、35 SC(B)9-800~20000/35
Structural features
- low-voltage coil of ring hydrogen resin grouted type dry transformer is in the foil winding structure and made of high-quality imported copper foil; high-voltage foil is in the “terraced” sectional and stratified structure and grouted and molded by vacuum epoxy; the interlayer voltage is low; it has a very powerful over-voltage bearing capacity.
- The iron core of ring hydrogen resin grouted type dry transformer is made of high-quality imported cold rolling crystal grain-oriented electrical steel and processed in the automatic iron core shearing line; it is in 45° inclined jointing structure; the central pillar is bond by special binding process; anti-rust paint is coated on the surface of iron core—it can prevent humidity and rust and effectively reduce noise.
Performance
- Safety, fire prevention, no pollution and direct operation in load center;
- High mechanical strength, strong capacity against short circuit, small partial discharge, good thermal stability, high reliability and long service life;
- Low loss, low noise and significant energy-saving effect;
- Good heat dissipation, strong operation capacity exceeding nameplate rating, increased operation capacity during forced air cooling;
- Good moisture resistance and operation in high humidity and other severe environment;
- Environmental protection, inflaming retarding, explosion prevention, free-maintenance and other characteristics;
- Small volume and light weight.
Normal operation conditions
- Maximum temperature: +40℃
- Maximum average daily temperature: +30℃
- Maximum average annual temperature: +20℃
- Minimum temperature: -5℃ (applicable to indoor transformer)
- Minimum temperature: -30℃ (applicable to outdoor transformer)
- Altitude: ≤ 1000m

Technical parameters of SC(B)9/10 series of epoxy grouted type dry transformer
Rated volume (kVA)	Voltage combination			Conn. Symb	No-load loss (W)	On-load loss under different insulation heat resistance grades F(120℃)	Excit Curr. (%)	Impedance (%)
Rated volume (kVA)	High voltage (kV)	Tap change scope (%)	Low voltage (kV)	Conn. Symb	No-load loss (W)		Excit Curr. (%)	Impedance (%)
30	6 6.3 6.6 10 10.5 11	±5 ±2×2.5	0.4	Dyn11 or Yyn0	220	750	2.1	4
50					310	1060	2.4
80					420	1460	1.8
100					450	1670	1.8
125					530	1960	1.6
160					610	2250	1.6
200					700	2680	1.4
250					810	2920	1.4
315					990	3670	1.2
400					1100	4220	1.2
500					1310	5170	1.0
630					1510	6220	1.0
630					1460	6310	1.0	6
800					1710	7360	1.0
1000					1990	8610	1.0
1250					2350	10260	1.0
1600					2760	12400	1.0
2000					3400	15300	0.8
2500					4000	18180	0.8
1600					2760	13700	1.0	8
2000					3400	16900	0.8
2500					4000	20000	0.8

Technical parameters of SC(B)10/10 series of epoxy grouted type dry transformer
Rated volume (kVA)	Voltage combination			Conn. Symb	No-load loss (W)	On-load loss under different insulation heat resistance grades F(120℃)	Excit Curr. (%)	Impedance (%)
Rated volume (kVA)	High voltage (kV)	Tap change scope (%)	Low voltage (kV)	Conn. Symb	No-load loss (W)		Excit Curr. (%)	Impedance (%)
30	6 6.3 6.6 10 10.5 11	±5 ±2×2.5	0.4	Yyn0 or Dyn11	190	710	2.4	4
50					270	1000	2.4
80					370	1380	1.8
100					400	1570	1.8
125					470	1850	1.6
160					540	2130	1.6
200					620	2530	1.4
250					720	2760	1.4
315					880	3470	1.2
400					980	3990	1.2
500					1160	4880	1.2
630					1340	5880	1.0
630					1300	5960	1.0	6
800					1520	6960	1.0
1000					1770	8130	1.0
1250					2090	9690	1.0
1600					2450	11730	1.0
2000					3050	14450	0.8
2500					3600	17170	0.8
1600					2450	12960	1.0	8
2000					3050	15960	0.8
2500					3600	18890	0.8

Technical parameters of SC(B)9/20 series of epoxy grouted type dry transformer
Rated volume (kVA)	Voltage combination			Conn. Symb	No-load loss (W)	On-load loss under different insulation heat resistance grades F(120℃)	Excit Curr. (%)	Impedance (%)
Rated volume (kVA)	High voltage (kV)	Tap change scope (%)	Low voltage (kV)	Conn. Symb	No-load loss (W)		Excit Curr. (%)	Impedance (%)
50	20 22 24	±5 or ±2×2.5	0.4	Yyn0 or Dyn11	380	1300	2.4	6
100					600	2100	2.2
160					750	2600	1.8
200					820	3100	1.8
250					940	3600	1.6
315					1080	4300	1.6
400					1280	5100	1.4
500					1500	6100	1.4
630					1700	7200	1.2
800					1950	8700	1.2
1000					2300	10300	1.0
1250					2650	12150	1.0
1600					3100	14600	1.0	8
2000					3600	17200	0.8
2500					4300	20400	0.8
2000					3600	18800	0.8
2500					4300	22400	0.8

Technical parameters of SC(B)10/20 series of epoxy grouted type dry transformer
Rated volume (kVA)	Voltage combination			Conn. Symb	No-load loss (W)	On-load loss under different insulation heat resistance grades F(120℃)	Excit Curr. (%)	Impedance (%)
Rated volume (kVA)	High voltage (kV)	Tap change scope (%)	Low voltage (kV)	Conn. Symb	No-load loss (W)		Excit Curr. (%)	Impedance (%)
50	20 22 24	±5 or ±2×2.5	0.4	Yyn0 or Dyn11	345	1235	2.4	6
100					540	1995	2.2
160					675	2470	1.8
200					740	2945	1.8
250					845	3420	1.6
315					975	4085	1.6
400					1155	4845	1.4
500					1350	5795	1.4
630					1530	6840	1.2
800					1755	8265	1.2
1000					2070	9785	1.0
1250					2385	11545	1.0
1600					2790	13870	1.0	8
2000					3240	16390	0.8
2500					3870	19380	0.8
2000					3240	17860	0.8
2500					3870	21280	0.8

Technical parameters of SC(B)9/35 series of epoxy grouted type dry transformer
Rated volume (kVA)	Voltage combination			Conn. Symb	No-load loss (W)	On-load loss under different insulation heat resistance grades F(120℃)	Excit Curr. (%)	Impedance (%)
Rated volume (kVA)	High voltage (kV)	Tap change scope (%)	Low voltage (kV)	Conn. Symb	No-load loss (W)		Excit Curr. (%)	Impedance (%)
50	35 ~ 38.5	±5 or ±2×2.5	0.4	Yyn0 or Dyn11	500	1500	2.8	6
100					700	2200	2.4
160					880	2960	1.8
200					980	3500	1.8
250					1100	4000	1.6
315					1310	4750	1.6
400					1530	5700	1.4
500					1800	7000	1.4
630					2070	8100	1.2
800					2400	9600	1.2
1000					2700	11000	1.0
1250					3150	13400	0.9
1600					3600	16300	0.9
2000					4250	19200	0.9
2500					4950	23000	0.9

Technical parameters of SC(B)9/35 series of epoxy grouted type dry transformer
Rated volume (kVA)	Voltage combination			Conn. Symb	No-load loss (W)	On-load loss under different insulation heat resistance grades F(120℃)	Excit Curr. (%)	Impedance (%)
Rated volume (kVA)	High voltage (kV)	Tap change scope (%)	Low voltage (kV)	Conn. Symb	No-load loss (W)		Excit Curr. (%)	Impedance (%)
800	35 ~ 38.5	±5 or ±2×2.5	3.15 6 6.3 10 10.5 11	Yyn0 Yd11 Dyn11	2500	9900	1.1	6
1000					2970	11500	1.1
1250					3480	13600	1.0
1600					4100	16300	1.0
2000					4700	19200	0.9	7
2500					5400	23000	0.9	7
3150					6700	25800	0.8	8
4000					7800	31000	0.8
5000					9300	36800	0.7
6300					11000	43000	0.7
8000				YNd11 Yd11 Dyn11	12600	48500	0.6	9
1000					14400	58500	0.6
12500			6、6.3 10、10.5		17500	68000	0.5
16000					21500	80000	0.5
20000					25500	90000	0.4	10

Schematic diagram of appearance and installation of 10kV body of SC(B)9, 10 series

Schematic diagram of dimension and installation of 10kV crust of SC (B) series

No.218, Wusong Road, Shanghai, China [sales headquarters] 200080 400-080-1921
F12, Shanghai Baokuang International BM Building
Address: No.666, Zhangwengmiao Road, Fengxian District, Shanghai Postal code:201400
Switchboard: 86-21-68866111 Fax:86-21-68860333
©2013 Shanghai Transformer Work Co., Ltd.

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