Description
Technical Parameters
Henan GNEE Electric Co., Ltd. is one of the leading manufacturers and suppliers of 1600 kva three phase step down oil immersed power transformer in China, also supports customized service with low price. Welcome to buy discount 1600 kva three phase step down oil immersed power transformer for sale here from our factory. If you have any enquiry about pricelist, please feel free to email us.
three phase step down oil immersed power transformer Description
Three - phase step - down oil - immersed power transformer, which is engineered to efficiently reduce high - voltage electricity for widespread use, with oil - immersion technology ensuring excellent heat dissipation and reliable long - term operation in power distribution systems. Due to the excellent quality of the wound core material and the characteristics of its winding and processing, the no-load current is significantly reduced.
1600 KVA Three Phase Step Down Oil Immersed Power Transformer video
three phase oil immersed transformer parameter
| Gnee Electric can provide the following types of three phase step down oil immersed power transformer: | ||||||||
| 50 KVA oil immersed transformer | 400 KVA three phase oil immersed transformer | |||||||
| 80 KVA oil cooled power transformer | 500 KVA transformer oil immersed type | |||||||
| 100 KVA oil filled power transformer | 630 KVA hermetically sealed power transformer | |||||||
| 125 KVA oil immersed distribution transformer | 800 KVA oil cooled small power transformer | |||||||
| 160 KVA oil immersed current transformer | 1000 KVA fully sealed oil immersed power transformer | |||||||
| 200 KVA oil immersed power transformer | 1250 KVA liquid dielectric power transformer | |||||||
| 250 KVA oil immersed self cooled transformer | 1600 KVA output oil power and distribution transformer | |||||||
| 315 KVA oil immersed type transformer | ||||||||
1.Appearance Inspection
Check whether the appearance of the oil cooled power transformer has any damage or deformation, if the paint is in good condition, and whether the nameplate and markings are clear.
Confirm that the oil level of the oil immersed power transformer is normal and there is no oil leakage at the oil conservator, bushings and other parts.
Check whether the bolts at all connection parts are tightened, if the grounding is reliable, and whether the grounding down-lead meets the requirements.
2.Insulation Resistance Measurement
Use an insulation resistance tester to measure the insulation resistance between the high-voltage and low-voltage windings to the ground and between phases of the oil cooled transformer respectively.
For newly installed oil filled power transformers, the insulation resistance value should meet the requirements specified by the manufacturer or relevant standards. Generally speaking, at room temperature, the insulation resistance of the high-voltage winding should not be lower than 300MΩ, and that of the low-voltage winding should not be lower than 100MΩ.
3.DC Resistance Measurement
Measure the DC resistance of each phase winding of the hermetically sealed power transformer by using a DC resistance tester.
The mutual difference of the DC resistance of each phase winding should not be greater than 2% of the average value, and the mutual difference of the DC resistance between lines should not be greater than 1% of the average value.
4.Turn Ratio Measurement
Use a turn ratio tester to measure the turn ratio of the fully sealed oil immersed power transformer.
The measurement result should be consistent with the turn ratio marked on the 1600 KVA three phase step down oil immersed power transformer, and the allowable error is within the specified range, usually ±0.5%.
5.Connection Group Inspection
Check the connection group of the liquid filled distribution transformer through a phase meter or other special instruments.
Ensure that the connection group is consistent with the design requirements to ensure the normal operation of the output oil power transformer in situations such as parallel operation.
6.Insulating Oil Test
Take an oil sample for electrical strength test, dissipation factor test, etc. of the insulating oil.
The electrical strength of new oil should not be lower than 40kV/2.5mm, and that of the operating oil should not be lower than 30kV/2.5mm; the dissipation factor at 90°C should not be greater than 0.5%.
7.On-Load Tap Changer Commissioning
For on-load tap-changing three phase oil immersed transformers, check the operation of the on-load tap changer.
Manually and electrically operate the on-load tap changer, observe whether its switching is flexible, if the position indication is accurate, and at the same time check the changes in voltage and current during the tap-changing process.
8.Cooling System Commissioning
Start the cooling system and check the operation of cooling fans, oil pumps and other equipment.
Check whether the circulation oil circuit of the cooling system is unobstructed, if there is any oil leakage, and whether the oil temperature and oil pressure are normal.
9.Impulse Closing Test
Conduct 5 impulse closing tests at the rated voltage, with an interval of about 5 minutes between each test.
Observe the inrush current situation of the oil immersed type transformer, check whether protection devices such as differential protection will act wrongly, and at the same time check whether there are any abnormal noises, heating and other phenomena in each part of the oil immersed self cooled transformer.
10.No-Load Operation Test
After the impulse closing test is qualified, let the oil immersed current transformer run no-load for 24 hours.
During this period, closely monitor parameters such as the temperature, oil temperature, oil level, voltage and current of the oil immersed distribution transformer, check for any abnormal sounds and vibrations, and ensure the stable operation of the oil filled distribution transformers under no-load conditions.
11.Load Operation Test
After the no-load operation is normal, gradually increase the load and conduct a load operation test.
about us
18+ years of transformer manufacturing experience
GNEE New Material Group
Established in 2008, GNEE boasts 18 years of expertise in transformer manufacturing and export, having delivered over 50,000 units globally. With a team of 200+ professionals and 20,000 sqm facilities across Shijiazhuang, Xingtai, and Anyang, we leverage strategic locations for raw material access and supply chain efficiency. Our commitment to innovation and quality ensures high-quality distribution and power transformer for diverse industries worldwide.
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