Blogs-Hebei Zhongbei Transformer Co., Ltd

Key Operation Points for Withstand Voltage Test of Oil-Immersed Transformers

The power frequency withstand voltage test is a critical dielectric test to verify the insulation performance of oil-immersed transformers.Strict operation specifications must be followed to ensure test accuracy and perso...

Is Forced Re-energization Allowed After Internal Fault Tripping of Oil-Immersed Transformers?

Forced re-energization is strictly prohibited when an oil-immersed transformer trips due to confirmed internal faults.Internal failures include winding short circuits,insulation breakdown,core damage,internal arcing and o...

Emergency Handling for Oil-Immersed Transformers When Flooding Submerges the Base

Flooding around or submerging the transformer base brings risks such as water ingress,insulation breakdown,short circuit and electric leakage.Follow standardized emergency procedures in the order of power cut,on-site isol...

How to Prevent Oil-Immersed Transformers from Lightning Damage

Lightning strikes may induce overvoltage,damage insulation,burn windings and even cause equipment explosion.A complete protection system combining external lightning shielding,surge protection,reliable grounding,and daily...

How to Clean Ground Oil Contamination Caused by Oil-Immersed Transformer Leakage

Proper cleaning of oil stains from transformer leakage follows the principles of safety first,pollution control and thorough decontamination.The work is divided into on-site safety preparation,physical oil removal,chemica...

Will Overload Operation Cause Permanent Damage to Oil-Immersed Transformers?

Short-term overload within standard allowable limits generally does not cause permanent damage.However,prolonged overload,frequent repeated overload,or severe overload beyond specified time and temperature thresholds will...