Technical Guide
-
Insulation resistance test record method and procedure requirements
Insulation resistance test requirements: After the electrical lines are installed, before energization, an insulation resistance test should be conducted for all electrical lines (including exposed and concealed lines, as well as cables), and those that do not meet the insulation requirements mus...Read more -
Advantages of Clamp Ground Resistance Testers Compared to Traditional Testing Methods
Compared to traditional voltage and current testing methods, the clamp-on ground resistance tester offers superior performance as follows: Easy to operate: Simply clamp the grounding wire to be tested with the jaws of the clamp-on ground resistance tester, and the ground resistance value can be...Read more -
Insulated Boot and Glove Voltage Withstand Test Device – Intelligent Testing Solution
Test circuit connection of the intelligent insulating boots and gloves withstand voltage test device (1) Power connection for the console: A red two-core wire is connected to the 220V AC power supply. (2) High-voltage cables of the control console: A thick red wire is connected from the high-...Read more -
Standard Procedure for Selecting Battery Charge and Discharge Testers
When selecting a battery charge-discharge tester, it is essential to focus on four core aspects: voltage, current, functionality, and safety. Equipment parameters should be matched with on-site conditions and industry standards to ensure accurate, compliant, and safe battery testing. The specific...Read more -
Method for Measuring Cable Insulation Resistance and Analysis of Result Evaluation
Cables serve as the physical carriers for power transmission and signal transmission. Their insulation performance is a key factor determining the safety, stability, and long-term operation of the entire system. Insulation resistance testing, as a non-destructive electrical test, quantitatively a...Read more -
Technical Principles and Selection Methods of Contact Resistance Testers
I. Application Background In power systems, abnormal contact resistance at conductor connections is a significant cause of equipment overheating, insulation aging, and even short-circuit accidents. A large number of switchgear failures are directly related to poor contact between contacts. Ther...Read more -
The regulations for preventive tests of power cable lines
General regulations for preventive tests of power cable lines When measuring the insulation resistance or conducting withstand voltage tests on the main insulation of the cable, it should be done separately on each phase; when measuring or testing one phase, the conductors, metal sheaths, metal j...Read more -
Application of Series Resonance Withstand Voltage Test Equipment in GIS Systems
After the overall assembly of the factory is completed, adjustments are carried out using GIS. Once the test is passed, the units are transported to the site for installation. During the transportation process, mechanical vibrations, impacts, etc. may cause the original components or fasteners in...Read more -
Maintenance and troubleshooting of SF6 gas recovery device
Maintenance and troubleshooting of SF6 gas recovery device The device and its surrounding environment should be kept clean at all times. 2. The device is composed of various machines and instruments. During transportation, it should be avoided from being jolted, collided with or tilted, in order...Read more -
35kV Insulating Gloves Voltage Withstand Test Standards and Test Plan
I. Test Execution Standards The insulation glove tests are strictly conducted in accordance with the current standards, and the core standards are as follows: GB/T 17622-2008 “Insulating Gloves for Live Working”: Clearly defines product classification, technical requirements, and type...Read more -
On-site Selection and Testing Plan for High-Current Generator
I. Objectives of the Test The formulation of the on-site test plan should prioritize clearly defining the test objectives, which will standardize the subsequent parameter setting and process design, ensuring the test is accurate and effective. The types and core purposes of on-site routine tests ...Read more -
Transformer DC Resistance Tester Configuration, Selection, and Usage
I. Basic Working Principle The core measurement of this device employs either the volt-ampere method or the bridge balance method, with specialized optimization tailored to the high inductance characteristics of transformer windings. Constant Current Source Excitation: The device features an int...Read more