Technical Guide
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Different testing methods for transformer DC resistance testers
Power supply The transformer DC resistance tester provides two types of power supply for the test: AC 220V/DC 12V. In the case of strong electromagnetic field interference, it is recommended to use the DC power supply for the test. In this state, the test values are stable and have strong resista...Read more -
Transformer Lightning Impact Test Measurement System and Waveform
The lightning impulse generator usually adopts multi-stage impulse voltage generators. The working principle of multi-stage impulse voltage generators can be simply summarized as multiple capacitors being charged in parallel, and then automatically connected in series for discharge, forming a ver...Read more -
Waveform judgment method for coil quality detection by inter-turn withstand voltage tester
Method for judging the quality of coils The inter-turn impact withstand voltage tester has four typical automatic inspection and judgment methods. Users can combine or use each method individually according to the actual situation of the tested coil. Each judgment method allows for arbitrary set...Read more -
Leakage Locations and Detection Methods of SF6 Switchgear
The leakage of SF6 switchgear has the following characteristics: It has concealment: it cannot be directly discovered; scientific methods need to be used to find the leakage points. A decrease in the leakage pressure directly affects the breaking performance of the circuit breaker. Repeated ga...Read more -
On-site Test Scheme for Insulating Oil Dielectric Strength Tester
Dielectric strength tester, commonly known as voltage endurance tester or high-voltage breakdown test instrument, is a specialized device used to measure the ability of electrical insulating materials (such as plastics, films, ceramics, insulating oil, wires and cables, etc.) to withstand high vo...Read more -
Main test function description of circuit breaker characteristic tester
Circuit breakers are core protection and control components in power systems, and their operational reliability directly determines the stable operation of the power grid. I. Core Objectives of Regular Circuit Breaker Testing Ensuring operational safety: Verify that the circuit breaker can accura...Read more -
Selection Scheme for 108kV Series Resonance Voltage Withstand Test Equipment
The mainstream solution is a 108kVA/108kV configuration. To meet different test capacity requirements, there are usually two configuration approaches, as follows: I. Main Configuration Details (1) Standard Configuration (108kVA/108kV) Core components: This configuration typically includes one app...Read more -
The main application scope of AC withstand voltage test equipment
The AC withstand voltage test equipment is a dedicated high-voltage testing device used to detect the insulation strength of electrical equipment. It is widely applied in multiple fields such as power systems, industrial manufacturing, and scientific research and testing. Its core functions and r...Read more -
Selection and Usage of Clamp-on Ground Resistance Tester
I. Selection Points Measurement Range: Select an appropriate range based on the common grounding resistance values. The main measurement range interval is from 0.01Ω to 2000Ω. Resolution and Precision: The higher the precision, the higher the equipment price. You can choose according to the actua...Read more -
Application and Selection Method of Battery Internal Resistance Tester
The battery internal resistance tester is an electronic instrument used to measure the internal resistance of batteries. It applies a specific frequency of alternating test signal to the battery and measures the voltage drop it generates. According to Ohm’s Law (R = V/I), the internal resis...Read more -
Common Transformer Testing Instruments Classification and Application Scope
The transformer testing instruments can be classified in multiple dimensions based on the test object and purpose. The most commonly used classification method is by test items. The specific categories and corresponding instrument functions are as follows: 1. Insulation characteristic testing ins...Read more -
Operating Specifications for Clamp-on Ground Resistance Tester
I. Before Measurement: Preliminary Confirmation and Safety Check (1) Applicability Confirmation (Core Premise) This instrument is only applicable to grounding systems that have formed a loop, such as continuous grounding of multiple towers or grounding grids of buildings. This is a basic requirem...Read more