Industry News

• Is There A Total False Alarm in Circuit Breaker Testing? How To Block Data Bias From The Source with GDGK-307

  When testing circuit breakers on site, the biggest fear is not discovering faults, but rather the instrument itself falsely reporting military information. Although the switch action is normal, the instrument reports exceeding the travel limit and non compliant synchronicity; Or the detected object

  Industry News June 30, 2026
• How To Choose The Right Transformer Oil Filtration Equipment for Substation Maintenance?

  Transformer oil inevitably absorbs moisture, gas, and particulate impurities during long-term operation. These contaminants severely reduce the oil's insulation performance, thereby weakening the transformer's internal insulation strength. When insulation performance drops to a critical value, it m

  Industry News June 23, 2026
• TTR Test Data Inconsistent? Repeated Wiring Reducing Efficiency? GDBC-901B Battery-Powered Version Offers A Field Solution

  When conducting transformer turns ratio and group tests in the field, several common problems repeatedly arise: single-phase phase-by-phase testing requires separate measurements of phases A, B, and C; slight differences in contact resistance during the three wiring operations can reduce the lateral

  Industry News June 17, 2026
• What is the difference between resistive voltage divider and capacitive voltage divider?

  Resistive Voltage DividerThe internal resistance of the high-voltage resistance divider is pure resistance, with simple structure, convenient use, high accuracy and good stability, and is widely used. The resistive voltage divider is not suitable for measuring higher AC voltage, because it is relate

  Industry News August 01, 2022
• What are the factors that affect the measurement error of the current transformer CT?

  The measurement error of the transformer is related to the impedance of the secondary circuit. The increase of the impedance will increase the error, and the accuracy will decrease. Therefore, the external impedance is a key factor in determining the exact level at which the current transformer oper

  Industry News April 21, 2022
• What should we do if the breakdown voltage of the transformer oil is unqualified?

  If the breakdown voltage of the transformer oil is unqualified, it means that the quality of the transformer insulating oil has deteriorated.At this point, we need to conduct a comprehensive analysis through various experiments and operation records. If there is no obvious impurity, color change, an

  Industry News March 29, 2022
• FR3 Vegetable Transformer Oil Filtration Plant Manufacturer in Chongqing China

  ZJA Series FR3 Vegetable Transformer Oil Filtration Plant is used to purify used transformer oil, FR3 Vegetable Oil, switchgear oil and different insulating oils. It is also used for purifying insulation oil in all kinds of large power equipments,which are110KV-1000KV. It has different flow rate for

  Industry News March 18, 2022
• How to use GDRZ-902 Transformer SFRA to download the test results by PC?

  Let the GDRZ-902 Transformer SFRA enter into the PC communication firstly, and then click “Download” button in the PC software, at the bottom of which the progress of uploading data is shown, the uploaded file is named automatically, notice: user must not change the name of the file, else the file c

  Industry News March 14, 2022
• Operation for GDBC-901 Transformer Turns Ratio TTR Tester

  GDBC-901 Transformer Turns Ratio Tester is used to measure turns ratio,vector group and so on of transformer, it can also measure turns ratio and polarity of CT PT. The test standards are IEC76-1 and IEC60044.10kV/400V DYN11 Power Transformer There are five terminals in primary:1)10500V ( Range in t

  Industry News February 24, 2022
• Transformer oil filter machine working

  1.The transformer construction area shall be fenced and hung with warning signs. 2. Fireworks are strictly prohibited in the transformer construction area, and sodium carbonate dry powder fire extinguishers are equipped on site. 3.Before oil filtering, all equipment and components must be checked fo

  Industry News February 15, 2022