Technical
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Selection method and standard regulations for three-phase relay protection testers
The core selection of the three-phase relay protection tester is based on demand. The main basis for selection is the test object and test items, while also taking into account future equipment expansion requirements. I. Core Considerations (1) Test Object Equipment Type: Clearly define the test ...Read more -
Selection Method for Zinc Oxide Arrester Resistive Current Tester
Zinc oxide arresters are key devices in power systems for protecting electrical equipment from damage caused by lightning overvoltage and operating overvoltage. Their core component is the ZnO valve plate, and during normal operation, a small leakage current composed of capacitive and resistive c...Read more -
Selection method for power cable insulation resistance tester
The core principle of the selection process is to ensure that the tester matches the testing requirements of the object being tested, while strictly complying with relevant safety regulations. During the selection process, the following six key factors need to be mainly considered: 1. Test Voltag...Read more -
Power Cable Variable Frequency Series Resonance Withstand Voltage Test Scheme
This scheme is applicable to the handover test, preventive test and post-repair verification test of 6kV to 220kV cross-linked polyethylene (XLPE) insulated power cables. It adopts the variable frequency series resonance test method and is formulated in accordance with GB 50150-2016 “Standa...Read more -
Selection Method for Lightweight High Voltage Test Transformers
Lightweight high-voltage test transformers (also commonly known as oil-immersed / dry-type test transformers, high-voltage withstand testers) are the core equipment for conducting power frequency AC withstand tests and DC withstand leakage tests on power equipment, electrical materials, and insul...Read more -
Ultrasonic Partial Discharge Detector Application and Standard Procedures
When conducting ultrasonic partial discharge detection, it is necessary to strictly follow the corresponding national standards, industry standards, and relevant regulations to ensure the standardization of the detection operation and the comparability of the detection results. I. Main Internatio...Read more -
Explanation of the selection method for three-phase multi-functional power consumption detection instruments
Selecting an appropriate three-phase multi-functional electrical detection instrument requires comprehensive consideration from multiple dimensions based on actual usage requirements. The core selection points can be divided into the following eight aspects, and the key concerns in each dimension...Read more -
The application scope and relevant standards of SF6 gas quantitative leak detector
The SF6 quantitative leak detector is a high-precision detection device, mainly used to locate and accurately measure the gas leakage points and leakage rates of electrical equipment that uses SF6 gas as an insulating and arc-extinguishing medium. It also plays a significant role in leakage monit...Read more -
Transformer partial discharge test equipment and test methods
The partial discharge test of transformers is an important and sensitive test item for detecting and evaluating the insulation condition inside the transformer. The core purpose is to identify local insulation weaknesses such as bubbles, sharp corners, and impurities that do not penetrate the ele...Read more -
Standard Procedures and Main Items for Preventive Tests of Transformers
I. Definition of Preventive Tests Preventive tests are inspection, testing or monitoring activities carried out on operating equipment to identify potential hazards and prevent accidents or equipment damage. They form the basis for the safe operation and condition-based maintenance of power equip...Read more -
Selection method for high-voltage insulation resistance tester
The selection of a high-voltage insulation resistance tester is the first crucial step in ensuring the effectiveness of the test and the safety of the operation. During the selection process, the following core factors need to be carefully considered, combined with the test requirements and the c...Read more -
Functions and Test Items of the Transformer Comprehensive Characteristic Test Bench
The transformer comprehensive characteristic test bench is a highly integrated testing system that integrates multiple single testing instruments required for transformer factory tests, commissioning tests, and preventive tests, forming a unified testing platform. It can complete the detection of...Read more