Technical Guide
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The principle and accuracy of the high and low voltage switch cabinet power-on test bench
High and low voltage switch cabinet power-on test bench is mainly used for conducting power-on tests on various switch cabinets and boxes before they are manufactured. The test bench can provide multiple AC and DC power sources, and can check whether various types of current meters, voltage meter...Read more -
Dielectric Strength Test Procedures for Different Materials
Dielectric strength testing is the core method for evaluating the electrical performance of insulating materials. Its testing methods and criteria mainly follow the national standard system. Currently, the series of standards GB/T 1408 “Test Methods for Electrical Strength of Insulating Mat...Read more -
Simple Fault Resolution Methods for DC High Voltage Generator
Simple Troubleshooting Method for DC High Voltage Generator Faults 1. When the power switch is turned on, the digital display on the control box does not light up. Please check the power connection and all the fuses. If any fuse is damaged, please replace it with a new one according to the amper...Read more -
The basic structural characteristics of the transformer comprehensive characteristic tester
The basic structural characteristics of the transformer comprehensive characteristic tester The main unit of the transformer comprehensive characteristic tester consists of an automatic voltage booster, an internal current booster, a microcomputer control system, a 640×480 dot matrix full-color f...Read more -
Advantages of the Variable Frequency Series Resonance AC Withstand Voltage Test Method
Applying external alternating voltage to a transformer is a fundamental insulation test for evaluating the electrical strength of the main insulation of a power transformer. It is also an important method for determining whether the main insulation of a power transformer is reasonable, whether th...Read more -
Use and Regular Calibration of Insulating Oil Moisture Tester
Current mainstream instruments are all designed based on the Karl Fischer coulometric (electrolytic) principle. The reaction mechanism involves the quantitative consumption of water in the sample during the oxidation of sulfur dioxide by iodine, while the consumed iodine is continuously replenish...Read more -
Technical Features and Usage Notes of Induction Withstand Voltage Test Equipment
The induction withstand voltage test device is controlled by a high-performance CPU. It utilizes high-power power electronics and software/hardware control technologies, allowing both the output voltage and frequency to be continuously adjustable. It outputs stable pure sine waves. The device is ...Read more -
Technical Analysis and Selection of High-Voltage Circuit Breaker Characteristic Testers
Time parameter (accuracy requirement ≤0.1ms, high-end models可达 0.01ms) Closing and opening time and three-phase inconsistency: This evaluates the consistency and coordination of the circuit breaker’s operating mechanism, serving as a key indicator affecting arc extinguishing performance....Read more -
Complete Procedure for Power Frequency Withstand Voltage Test Equipment
The complete test procedure of the power frequency withstand voltage test device 1. Wiring preparation for power frequency withstand voltage test equipment Attach one end of the grounding wire to the grounding grid, and the other end to the grounding terminal of this instrument. Note: The groun...Read more -
Main Test Items and Equipment for 10kV Zinc Oxide Surge Arresters
The 10 kV zinc oxide arrester is a core protective device for overvoltage protection in power systems, and its operating condition directly affects the insulation safety and stable operation of various electrical equipment within the system. Conducting standardized and regulated preventive tests ...Read more -
Influence of Test Interference on Partial Discharge Detector and Its Recognition
The basic principle of electrical detection for partial discharge is to measure the high-frequency current pulses generated by partial discharge in the insulation structure of the test sample under a certain voltage. During actual testing, it is necessary to distinguish and eliminate the high-fre...Read more -
Relay protection tester boundary test parameter settings
Relay protection tester boundary measurement Automatically determines the two operating boundaries of directional protection and calculates the maximum sensitivity angle. In the “Display Operating Angle Vector Diagram” mode, the two boundary lines and the maximum sensitivity line can...Read more