20KV Electric Three Phase Dry Type Power Transformer Distribution Transformer

TSTY Electric Co., Ltd.

Our SC(B) series epoxy resin cast dry transformer is cast under vacuum with thin insulating bands automatically. The core is made of high permeable grain orientated silicon sheet and cast with imported epoxy resin. Thanks to advanced technology, quality raw materials, scientific management , and perfect inspection means , our products have the following features.

The coil is reinforced with glass fiber and cast under vacuum with filler epoxy resin. It has good mechanical properties, is free of crack and inner bubble and has low local discharge , high reliability, and long service life. The high and low voltage systems are cast under vacuum , thus the coil will not absorb moisture . The clamps of core are subjected to corrosion resistant treatment. The insulating materials in the coil such as glass fiber are self extinguishing and they will not cause fire by the arc resulted from short circuit . The resin will not generate toxic or harmful gas under high temperature.

Main performance parameters for SC (B) 20KV dry-type transformer:

20KV Series Cast Resin Dry Type Transformer
KVA	Voltage		VECTOR	Impedance voltage	Losses(w)		No-load Current
	Voltage		GROUP	(%)	Losses(w)		(%)
	HV	LV			No-load loss	Load loss
	KV	V			No-load loss	Load loss
50	15	380	Yyn0	6	500	1500	2.8
100	20	400	Dyn11		700	2200	2.4
160	22	415	Yzn11		800	2960	1.8
200		433			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
1250					3150	13400	0.9
1600					3600	16300	0.9
2000					4250	19200	0.9
2500					4950	23000	0.9