3 phase dry type cast resin isolation transformer

product description

Feature of Epoxy Resin Cast Dry-Type Power Transformer

This series of dry-type transformers are used to directly reduce 35KV electrical grid power supply to 400V distribution power supply for users and omits the stage of 10KV transmission and transformation., which significantly decreases operating costs and engineering construction costs of multi-level substation projects, and have significant social benefits. By optimizing the structure of the high-voltage coil, the distributions of voltage and capacitance between layers are improved, which greatly enhances the impact resistance of products to withstand atmospheric over-voltage and operating over-voltage, as well as improves the electric field distribution and further reduces the partial discharge volume of product.

Technical Requirement of Epoxy Resin Cast Dry-Type Power Transformer

Environment: -25℃~40℃

Altitude(m): 100 meters or less

Insulation Class: F Class

Frequency(Hz): 50

Tap Range: 50-160KVA：±2.5%、±5%; 200-2500KVA：±5%、±2*2.5%

Voltage Regulating Mode: No-load Voltage Regulating

Cooling Type: AN/FN

Technical Parameter of Epoxy Resin Cast Dry-Type Power Transformer

Executive Standard: IEC60076 & National Standard

HV:35/36/37/38.5 LV:0.4/0.415
Capacity	Connection Group	No-Load Loss W	On-Load Loss W	No-Load Current %	Short-Circuit Impedance %
Capacity	Connection Group	No-Load Loss W	On-Load Loss W	No-Load Current %	Short-Circuit Impedance %
50	Yyn0 Dyn11	450	1420	2.3	6
100		630	2090	2	6
160		790	2810	1.5	6
200		880	3320	1.5	6
250		990	3800	1.3	6
315		1170	4510	1.3	6
400		1370	5410	1.1	6
500		1620	6650	1.1	6
630		1860	7690	1	6
800		2160	9120	1	6
1000		2430	10400	0.75	6
1250		2830	12700	0.75	6
1600		3240	15400	0.75	6
2000		3820	18200	0.75	6
2500		4450	21800	0.75	6