Technical Guide
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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 -
The usage method of external synchronization for the high-voltage switch dynamic characteristic tester
Operating Instructions for Using External Synchronization with High-Voltage Switch Dynamic Characteristic Tester 1. If the current of the driving relay of the tested switch is greater than 10A, an external synchronization method should be used; that is, instead of using the opening and closing c...Read more -
Technical Scheme for Determining the Capacity of Series Resonance Voltage Withstand Test Equipment
Test subject and test requirements 1. AC withstand test for a 35kV/400mm2 cable for 1.2km, with capacitance ≤ 0.258uF, test frequency 30-300Hz, test voltage 52kV, test duration 60 minutes. 2. The AC withstand test for the 35kV/60000kVA main transformer, with an capacitance of ≤ 0.02uF, is conduc...Read more -
The selection method of current size for DC resistance tester
The selection of the current for the DC resistance tester is essentially a trade-off between measurement speed, signal stability, and preventing overheating while ensuring measurement accuracy. In simple terms, for large transformers or low-resistance measurements, a high current is suitable; for...Read more -
Equipment and Test Methods for Partial Discharge Detection of Electric Motors
A complete partial discharge test system for motors typically includes the following core equipment, with specific configurations varying depending on the test object (such as the entire vehicle, stator, or individual coils) and the test standards. I. Core Components High Voltage Unit This includ...Read more