Understanding Type Tests for Three-Phase Dry type transformers: What You Need to Know from a Chinese Manufacturer
Are you looking for a reliable Chinese manufacturer of three-phase Dry type transformers? If so, you need to understand the type tests that are used to ensure the quality of the transformers. In this blog post, we’ll explain what type tests are and why they’re important when selecting a Chinese manufacturer.
Type tests are tests that are conducted on a transformer to ensure that it meets the required safety and performance standards. These tests are conducted by the manufacturer and are designed to evaluate the transformer’s electrical, mechanical, and thermal properties. The tests are conducted in accordance with international standards such as IEC 60076 and IEEE C57.12.
The type tests for three-phase Dry type transformers include:
SC(B)11
Rated capacity （KVA）
Voltage combination（KV）
No-load losses（W）
Load losses（W）
No-load current （%）
Short-circuit impedance （%）
SC11-30
30
6,6.3,6.6,10,11/0.4
180
710
2.4
4.0
SC11-50
50
6,6.3,6.6,10,11/0.4
250
1000
2.4
4.0
SC11-80
80
6,6.3,6.6,10,11/0.4
340
1380
1.8
4.0
SC11-100
100
6,6.3,6.6,10,11/0.4
360
1570
1.8
4.0
SC11-125
125
6,6.3,6.6,10,11/0.4
420
1850
1.6
4.0
SCB11-160
160
6,6.3,6.6,10,11/0.4
490
2130
1.6
4.0
SCB11-200
200
6,6.3,6.6,10,11/0.4
560
2530
1.4
4.0
SCB11-250
250
6,6.3,6.6,10,11/0.4
650
2760
1.4
4.0
SCB11-315
315
6,6.3,6.6,10,11/0.4
790
3470
1.2
4.0
SCB11-400
400
6,6.3,6.6,10,11/0.4
880
3990
1.2
4.0
SCB11-500
500
6,6.3,6.6,10,11/0.4
1050
4880
1.2
4.0
SCB11-630
630
6,6.3,6.6,10,11/0.4
1210
5880
1.0
4.0
SCB11-630
630
6,6.3,6.6,10,11/0.4
1170
5960
1.0
6.0
SCB11-800
800
6,6.3,6.6,10,11/0.4
1370
6960
1.0
6.0
SCB11-1000
1000
6,6.3,6.6,10,11/0.4
1590
8130
1.0
6.0
SCB11-1250
1250
6,6.3,6.6,10,11/0.4
1880
9690
1.0
6.0
SCB11-1600
1600
6,6.3,6.6,10,11/0.4
2210
11730
1.0
6.0
SCB11-2000
2000
6,6.3,6.6,10,11/0.4
2720
14450
0.8
6.0
SCB11-2500
2500
6,6.3,6.6,10,11/0.4
3200
17170
0.8
6.0
• Short-circuit test: This test is used to measure the short-circuit impedance of the transformer. It is conducted by applying a short-circuit current to the transformer and measuring the voltage drop across the terminals.
• Temperature rise test: This test is used to measure the temperature rise of the transformer under normal operating conditions. It is conducted by measuring the temperature of the windings and core of the transformer.
• Insulation resistance test: This test is used to measure the insulation resistance of the transformer. It is conducted by applying a voltage to the transformer and measuring the current that flows through the insulation.
• Dielectric test: This test is used to measure the dielectric strength of the transformer. It is conducted by applying a high voltage to the transformer and measuring the current that flows through the insulation.
• No-load loss test: This test is used to measure the no-load loss of the transformer. It is conducted by measuring the power consumed by the transformer when it is not loaded.
When selecting a Chinese manufacturer of three-phase Dry type transformers, it is important to ensure that they have conducted the necessary type tests to ensure the quality of their products. By understanding the type tests and their importance, you can be sure that you are getting a reliable and high-quality transformer from a reputable Chinese manufacturer.
Type tests are tests that are conducted on a transformer to ensure that it meets the required safety and performance standards. These tests are conducted by the manufacturer and are designed to evaluate the transformer’s electrical, mechanical, and thermal properties. The tests are conducted in accordance with international standards such as IEC 60076 and IEEE C57.12.
The type tests for three-phase Dry type transformers include:
