On Load Tap Changer，Series S11 Manufacturer

On Load Tap Changer，Series S11

: http://dry-transformer.com/2-2-on-load-tap-changer-series-s11.html

On load tap changers change the output voltage through the use of regulating switches that change the number of coils by adjusting the coil tap chargers on one side of the transformers. They are especially suitable for users with large grid fluctuations and requirements for a stable voltage, as they achieve both manual and automatic voltage regulation, even when the power is not turned off. The designed voltage range is generally 10±4×2.5kV, with a suitable tapping range designed according to your demands. Fully sealed corrugated oil tanks are used to ensure transformer oil will not come into contact with ambient air or moisture, which ensures there is no oil aging and improves the service life. Elastic deformation of corrugated plates is used to adjust transformer oil volume changes caused by thermal expansion and contraction. A pressure release safety protection device is equipped, allowing extraneous pressure to be released through pressure relief valves for added safety.

Parameters

Model	Rated capacity	Rated capacity High voltage	Rated capacity Low voltage	Connection and vector group	No-load losses(W)	Load losses(W)	No-load current (%)	Short circuit impedance (%)	Weight(kg) Oil weight	Weight(kg) Product weight	Weight(kg) Overall weight	Dimensions(mm) L	Dimensions(mm) W	Dimensions(mm) H	Gauge (mm)
S11-M-30/10	30	11 10.5 10 6.3 6 Tapping link range ±5% or ±2 ×2.5%	0.4	Yyn0 Dyn11	95	600	1.3	4	90	200	400	1050	660	1140	400×400
S11-M-50/10	50				130	870	1.1		100	220	460	1070	710	1180
S11-M-63/10	63				150	1040	1		110	250	500	1110	720	1190
S11-M-80/10	80				170	1250	0.9		115	290	550	1120	730	1200
S11-M-100/10	100				200	1500	0.8		120	350	620	1140	740	1220
S11-M-125/10	125				230	1800	0.8		145	390	700	1180	760	1280
S11-M-160/10	160				270	2200	0.7		175	460	830	1210	780	1280	550×550
S11-M-200/10	200				330	2600	0.7		190	520	910	1240	780	1360
S11-M-250/10	250				390	3050	0.6		200	610	1000	1280	800	1380
S11-M-315/10	315				470	3650	0.6		220	730	1190	1330	860	1390
S11-M-400/10	400				560	4300	0.5		260	900	1430	1360	860	1440	660×660
S11-M-500/10	500				670	5100	0.5		280	1000	1600	1439	920	1480
S11-M-630/10	630				800	6200	0.5	4.5	330	1100	1830	1540	1010	1510
S11-M-800/10	800				980	7500	0.4		450	1280	2300	1610	1030	1660	820×820
S11-M-1000/10	1000				1150	10300	0.4		550	1450	2700	1750	1160	1750
S11-M-1250/10	1250				1360	12000	0.3		630	1800	3200	1800	1260	1810
S11-M-1600/10	1600				1640	14500	0.3		800	2100	3700	1930	1300	1890
S11-M-2000/10	2000				1940	18300	0.3	5	1050	2600	4500	2030	1340	2000	920×920
S11-M-2500/10	2500				2290	21200	0.3		1200	3100	5500	2410	1610	2400
S11-M-3150/10	3150				2730	24300	0.3		1400	4100	7200	2750	1810	2600

Features

The on load tap changer features wide voltage range (4 x2.5%), firmly structure, good short-circuit resistance, and excellent energy saving effect. It reduces the average no-load loss by 30% and no-load current by 45%.
Fully sealed corrugated oil tanks are used to ensure transformer oil will not come into contact with ambient air or moisture, which slows down oil aging and improves the service life. So it is maintenance-free.
Elastic deformation of corrugated plates is used to adjust transformer oil volume changes caused by thermal expansion and contraction. A pressure release safety protection device is equipped, allowing extraneous pressure to be released through pressure relief valves for added safety.