Dry Type Transformer

Product Overview

Dry type transformers differ from oil-immersed transformers primarily in their cooling method. The high-voltage windings are vacuum cast with epoxy resin, while the low-voltage windings are manufactured using either cast resin or resin-impregnated prepreg technology, ensuring high reliability in various environmental conditions.

Cooling methods include natural air cooling (AN) and forced air cooling (AF). With fan-assisted cooling, the transformer can achieve up to 40% increased load capacity.

Power range: 50 kVA to 6300 kVA

Voltage level: Up to 35 kV

Key Features

Environmentally Friendly: Oil-free design eliminates the risk of leakage and environmental pollution.

Fire Safety: Flame-retardant epoxy resin minimizes fire hazards.

Moisture Resistant: Can be put into service immediately even after long periods of inactivity; ideal for humid or dusty environments.

Low Maintenance: Compact and robust structure requires minimal upkeep.

Enhanced Cooling: Optional fan cooling allows over 40% load increase.

Versatile Applications: Widely used in high-rise buildings, commercial centers, rail transit, hospitals, and airports—especially where fire safety and eco-compliance are essential.

Implementation standards

GB 1094 : Power Transformer

IEC 60076: Power Transformer

GB/T10228 :Specification and Technical Requirements of Dry type Power Transformers

JB/T10008 :6kV-500kV Power Transformer Sound Level

GB/T7354 : Partial Discharge Measurements

Application

The product is widely used in power transmission and transformation systems,such as hotels,restaurants,airports,high-rise buildings, commercial centers,residential quarters and other important places,as well as subways,smelting power plants and other harsh environments.

ZTelec Dry Type Transformer Installation

Technical Parameters

Rated capacity (kVA)	Voltagegroup			Impedance voltage(%)	SC(B)10			Sound leve (dB)	Dimension(mm)			Weight(kg)
Rated capacity (kVA)	HV(kV)	Tap range	LV(kV)	Impedance voltage(%)	No-loadloss (W)	Loadloss120℃ (W)	No-load curren (%)	Sound leve (dB)	L	W	H	Weight(kg)
30	10 11 10.5 6.6 6.3 6	±2×2.5% ±5%	0.4	4	190	710	2.0	44	620	400	600	220
50					270	1000	2.0	44	650	400	740	320
80					370	1380	1.5	45	750	500	770	460
100					400	1570	1.5	45	800	500	830	580
125					470	1850	1.3	46	950	880	1090	750
160					540	2130	1.3	46	950	880	1090	780
200					620	2530	1.1	47	1050	900	1200	850
250					720	2760	1.1	48	1050	900	1200	1030
315					880	3470	1.0	48	1080	900	1250	1060
400					980	3990	1.0	49	1110	950	1270	1400
500					1160	4880	1.0	49	1130	950	1380	1550
630					1340	5880	0.85	49	1200	950	1450	1820
630				6	1300	5960	0.85	50	1320	950	1375	1850
800					1520	6960	0.85	51	1310	1000	1315	2150
1000					1770	8130	0.85	52	1400	1070	1520	2550
1250					2090	9690	0.85	53	1440	1150	1570	3020
1600					2450	11730	0.85	54	1650	1200	1795	4500
2000					3050	14450	0.7	55	1800	1260	1870	5300
2500					3600	17170	0.7	56	1950	1260	2035	6200

Rated capacity (kVA)	Voltagegroup			mpedance voltage(%)	SC(B)11			Sound eve (dB)	Dimension(mm)			Weight(kg)
Rated capacity (kVA)	HV(kV)	Tap range	LV(kV)	mpedance voltage(%)	No-loadloss (W)	Loadloss120℃ (W)	No-load current (%)	Sound eve (dB)	L	W	H	Weight(kg)
30	10 11 10.5 6.6 6.3 6	±2×2.5% ±5%	0.4	4	170	710	2.0	44	620	400	600	220
50					250	1000	2.0	44	650	400	740	320
80					330	1380	1.5	45	750	500	770	460
100					360	1570	1.5	45	800	500	830	580
125					420	1850	1.3	46	950	880	1090	750
160					490	2130	1.3	46	950	880	1090	780
200					560	2530	1.1	47	1050	900	1200	850
250					650	2760	1.1	48	1050	900	1200	1030
315					790	3470	1.0	48	1080	900	1250	1060
400					880	3990	1.0	49	1110	950	1270	1400
500					1040	4880	1.0	49	1130	950	1380	1550
630					1210	5880	0.85	49	1200	950	1450	1820
630				6	1170	5960	0.85	50	1320	950	1375	1850
800					1370	6960	0.85	51	1310	1000	1315	2150
1000					1590	8130	0.85	52	1400	1070	1520	2550
1250					1880	9690	0.85	53	1440	1150	1570	3020
1600					2210	11730	0.85	54	1650	1200	1795	4500
2000					2750	14450	0.7	55	1800	1260	1870	5300
2500					3240	17170	0.7	56	1950	1260	2035	6200

Product Details

FAQ

1. What certificates do your transformers have?

CE, ISO, Test certificates.

2. What is the capacity of the transformers you provide?

50-20000kva. We can provide customized services for various transformers within the range!

3. How long is the warranty period of the transformer?

We provide a 12-month warranty period.

4. How long is the delivery time and delivery time of the transformer?

After receiving the advance payment, the production cycle is 15-25 days. The transportation cycle should be calculated according to your region and mode of transportation.

5. Which countries do you export your products to?

We support global supply, and our products have been exported to more than 60 countries, Southeast Asia, the Middle East, South America, Africa, Americas