500 kva/2000kva medium voltage dry type transformer

product description

Feature of Double High-Voltage Convertible Dry-Type Transformer

When a series of dry-type transformers is connected to a line voltage of 20KV or 10KV, the connection state between two windings of each phase high-voltage coil is controlled by a conversion device, and the purpose of voltage conversion is achieved in series or parallel, while the output voltage is constant, thereby realizing a transformer product can be connected to the 10KV, 20KV class two voltage systems during the non-synchronous period. It is a transitional product when the network power 10KV will be upgraded to 20KV. It can reduce the repetitive investment but convenient and quick conversion and also has stable product performance.

Technical Requirement of Double High-Voltage Convertible Dry-Type Transformer

Environment: -25℃~40℃

Altitude(m): 100 meters or less

Insulation Class: F Class

Frequency(Hz): 50

Tap Range: ±5%、±2*2.5%

Voltage Regulating Mode: No-load Voltage Regulating

Cooling Type: AN/FN

Technical Parameter of Double High-Voltage Convertible Dry-Type Transformer

Executive Standard: IEC60076 & National Standard

HV:20/22/24 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 %
250	Dyn11	900	3150	2	6
320		1050	4200	2	6
400		1100	4900	2	6
560		1320	6000	2	6
630		1600	6500	2	6
750		1900	770	1.5	5.6
800		1900	8500	1.5	6
1000		2200	10000	1.5	6
1250		1650	11000	1.5	6
1500		2900	11426	1.5	5.6
1600		2900	13000	1.5	6
2000		3500	16000	1	6
2500		4300	19000	1	6
3000		4900	22000	1	6
3200		5200	23000	1	6
3500		5700	25000	1	6
4000		6200	27000	1	6.5