On Load Tap Changer Transformer(OLTC)

These transformers are designed and developed using latest technologies and can be provided with a variety of terminations so as to suit the requirements for new installation or replacement.

Optimum efficiency is ensured by delicate proportioning of core and winding looses Electrolytic Grade pure copper, with Transposition in L.V. coil for current sharing in parallel Conductors, Electric grade press paper, boards and mineral oil. Thus better regulation is achieved resulting in longer life. Careful designing also reduces noise level to the minimum.

Advantages

The on-load tapping transformer has high reliability, advanced performance and reasonable economic indicators.

The iron core adopts stepped three-stage joints, and the surface is coated with hardened varnish to reduce loss and noise.

The use of new winding structure, reasonable oil passage design and new insulation structure improve the mechanical strength and short-circuit resistance.

The oil storage tank has two structures: fully sealed and oil storage tank with oil storage device

Standards

GB 1094 Power Transformer

GB/T 15164 Oil-immersed power transformer load guide

GB/T 6451 Three-phase oil-immersed power transformer technical parameters and requirements

IEC/60076

Capacity

30kva~10000kva

Voltage

380v~35kv

USES

Variable voltage distribution transformer

Data Sheet

Short- Circuit impedance (%)	No-Load Loss (W)			On-Load Loss (W)			No-Load Current (%)	Weight (kg)	Overall dimension (mm			Gauge (mm)
Short- Circuit impedance (%)	Type 9 loss	Type 10 loss	Type 11 loss	Type 9 loss	Type 10 loss	Type 11 loss	No-Load Current (%)	Weight (kg)	L	W	H	Gauge (mm)
4	480	430	380	3060	2910	2910	1.5	1550	1740	870	1450	660×660
	560	500	450	3600	3420	3420	1.4	1600	1940	880	1560	660×660
	670	6000	540	4320	4100	4100	1.4	1630	1980	900	1610	660×660
	800	720	640	5220	4960	4960	1.3	2030	2050	1000	1680	660×660
	960	860	640	6210	5900	5900	1.2	2110	2060	1070	1760	660×660
4.5	1200	1080	960	7650	7270	7270	1.1	2670	2590	1130	1970	820×820
	1400	1260	1120	9360	8890	8890	1	2900	2620	1290	2070	820×820
	1700	1530	1360	10980	10430	10430	1	3400	2650	1380	2120	820×820
	1950	1760	1560	13050	12400	12400	0.9	4000	2720	1410	2190	820×820
	2400	2160	1920	15570	14790	14790	0.8	5500	2880	1490	2210	820×820
5	2830	2550	2260	18850	17910	17910	0.7	6000	2900	1560	2280	1070×1070
5	3350	3020	2680	21000	19950	19950	0.7	6500	2950	1600	2380	1070×1070