Technical
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The insulation resistance testing method requires the correct use of a digital megohmmeter.
During the process of using electricity, there are issues related to electrical safety. In electrical equipment, such as motors, cables, and household appliances, one of the normal operating conditions is the insulation level of the insulation materials, which is the value of the insulation resis...Read more -
Leakage of DC high-voltage generator and operation of DC withstand voltage test
The DC high-voltage generator conducts leakage and DC withstand voltage tests on the sample. Before conducting the load test, install the high-voltage shielded microammeter onto the high-voltage output terminal of the high-voltage voltage booster device, and connect the corresponding dedicated s...Read more -
Classification and application scope of high-voltage switch dynamic characteristic tester
High-voltage switches (circuit breakers) serve as the core equipment for fault isolation and normal operation control in the power system. Their mechanical action characteristics directly determine the safety and reliability of power grid operation. The high-voltage switch dynamic characteristic ...Read more -
The composition and working principle of the temperature rise high current generator
I. Structure of the Temperature Rise High Current Generator The structure design of the temperature rise high current generator focuses on three core goals: “stable output of high current, precise monitoring of temperature rise, and ensuring the safety of the test”. Depending on the o...Read more -
The zinc oxide arrester tester can operate in wired and wireless modes.
The zinc oxide arrester tester is simple to operate and convenient to use. The entire measurement process is controlled by a single chip microcomputer. It can measure the total current, resistive current and its harmonics, power frequency reference voltage and its harmonics, active power and phas...Read more -
Five Conventional Test Items Standards and Procedures for Power Transformers
Power transformers, as the core hubs for power transmission and distribution in the power system, directly determine the safety and stability of the power grid and the quality of electrical energy through their operational reliability. During the factory acceptance, on-site installation handover,...Read more -
The methods and characteristics of DC leakage current measurement and DC withstand voltage test
Methods and characteristics of DC leakage current measurement and DC withstand voltage test Due to the limitations of insulation resistance measurement, the measurement of leakage resistance was introduced in insulation tests. The equipment used for measuring leakage current is more complex than...Read more -
The choice between intelligent power frequency withstand voltage test equipment and manual operation
The selection of power frequency withstand voltage test equipment should follow the principles of “parameter matching, scene adaptation, and compliance with standards”. It is necessary to scientifically choose intelligent or manual devices based on the parameters of the test sample, t...Read more -
Basic Measurement and Operating Instructions for Power Quality Analyzer
Basic measurements of power quality analyzer: voltage/current/frequency Voltage/current/frequency can measure three-phase voltage, frequency of phase A voltage, three-phase current, as well as neutral line voltage and neutral line current. The buttons used in the power quality analyzer are as f...Read more -
Precautions for On-site Testing of Insulating Oil Dielectric Loss Tester
In the power system, the measurement of dielectric loss for components such as transformers, transformers, reactors, capacitors, bushings, and lightning arresters is the most fundamental method for evaluating their insulation performance. The dielectric loss tester breaks away from the traditiona...Read more -
Transformer Comprehensive Test Bench Low-Voltage Characteristics and Load Test Method
Transformer Comprehensive Test Bench Low-Voltage Characteristics Test No-load test Connect the main control console and the auxiliary control console of the test bench using aviation connector cables. Connect the “three-phase four-wire” of the test bench to the main power supply. ...Read more -
Selection Guide for Three-phase and Six-phase Microcomputer Relay Protection Testers
As someone who has been dealing with substations and power equipment for a long time, when choosing a relay protection testing instrument, the core factor is: it must precisely match the type of protection you want to test and also be compatible with the voltage level at the site. There is no nee...Read more