Oil-immersed transformer three-phase 10kv 20kv 630kva oil-immersed power transformer

application Details

Introduction

An oil-immersed transformer is a transformer device that uses oil cooling to reduce the temperature of a transformer. The body of the oil-immersed transformer is installed in a welded steel tank filled with insulating oil. When an oil-immersed transformer is running, the heat from the coil and core is first transferred to the insulating oil and then to the cooling medium. The power range is 6-35kV, which can be divided into immersion free cooling transformers and immersion forced air cooling transformers according to the size of the capacity.

A transformer is a device that uses the principle of electromagnetic induction to change the alternating voltage, and the main components are the primary coil, the secondary coil and the core (magnetic core). In electrical equipment and wireless circuits, it is often used as rising and falling voltage, matching impedance, safety isolation, etc.

technical parameter

Technical Data

Rated Capacity （kVA）	Level 1(S22 Type）		Level 2(S20 Type）		Level 3(S13 Type）		Short-circuit impedance%
	No-load loss (kW)	Load loss （75℃） (kW)	No-load loss (kW)	Load loss （75℃） (kW)	No-load loss (kW)	Load loss （75℃） (kW)
6300	4.1	32	4.8	32	5.9	33	10.5
8000	4.9	38	5.8	38	7.1	40
10000	5.8	45	6.8	45	8.4	48
12500	6.8	53	8.7	53	9.9	56
16000	8.3	65.7	9.8	65.7	12	69
20000	9.7	79	11.4	79	14.1	84
25000	11.4	94	13.5	94	16.6	99
31500	13.5	111	16	111	19.7	117
40000	16.2	133	19.1	133	23.5	141
50000	19.4	158	22.9	158	28.2	166
63000	22.9	187	27	187	33.3	198
75000	26	212	30.7	212	37.8	224	12～14
90000	29.9	245	35.4	245	43.5	258
120000	37.3	303	44.1	303	54.2	320
150000	44.1	359	52.1	359	64.1	379
180000	49.5	411	58.5	411	72	434

Product Advantages
1) Partial discharged: The partial discharge is less than 80pC under 1.5 times of rated voltage;
2) Noise: Products of 63MVA and below is lower than 58 dB (AN);
3) Power loss: no-load loss is 30% lower than that of IEC standard;
4) Reliability: All in-service products have no damages or oil leakage occurred;

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