The DC resistance test of transformer windings is an essential test item for transformers after handover, overhaul, and change of tap changer. The Regulations stipulate that it is necessary to measure the DC resistance of transformer windings during transformer handover, major repairs, minor repairs

To use our GDVA-405 safely and efficiently, please follow the following safety regulations for operation:1) All technical index should keep in work condition before testing with Analyzer.2) Please follow associated international standards in a special application.3) Forbid high voltage or high curre

(1) Maximum gas storage pressure: 50bar.(2) Recovery gas pressure: initial pressure ≤ 0.8MPa (20°C), final pressure ≤ 1mbar.(3) Gas storage volume: 340L.(4) Vacuuming speed : ≥ 60m3/h; ultimate vacuum:≤ 0.05Pa.(5) Max running time(single): >96 hours(6) Compressor system: adopts oil-free compressor,