Category: Technique

Common mistakes to avoid when conducting a battery discharge test

While conducting a battery discharge test may seem straightforward, there are common mistakes that can lead to inaccurate results and potential safety hazards. In this article, we will discuss some best practices for conducting a battery discharge test and common mistakes to avoid.

What electrical transformers tests to conduct before installation

What electrical transformers tests to conduct before installation ?

Transformer dielectric test
Transformer winding resistance test
Transformer turn ratio test
Transformer insulation resistance test

Transformer capacitance & tan delta test
Transformer load loss (short circuit )and impedence test

Transformer temperature rise test

The open circuit solution of substation battery backup power system and the prevention measures

This article analyzes the main causes of open circuits in substation batteries and proposes preventative measures, including methods for detecting and preventing battery open-circuit faults

What is battery load bank ?

Battery load bank is a device that is used to test the performance and capacity of batteries by subjecting them to a simulated load, which realize the constant discharge at the set value by regulating continuously the discharge current.

What is the purpose of VLF testing?

The purpose of VLF testing is to detect any potential weaknesses or defects in the insulation of cables and equipment, which can cause electrical breakdowns and failures.

What is tan-delta test ?

Tan-delta test is also know as dielectric losss testing. Dielectric loss refers to the energy loss that occurs in a dielectric material (such as the insulation of a transformer) when an electric field is applied to it. The dielectric loss is caused by the electrical resistance of the material, which results in the conversion of electrical energy into heat.

Prioritizing Safety: The Critical Importance of Preventive Maintenance for Electrical Equipment

The maintenance of electrical equipment is a key point that cannot be ignored in the entire production work. It not only provides guarantee for the production of enterprises, but also vigorously promotes the development of electrical equipment in China. Therefore, for now, it is of great significance to study the preventive daily maintenance of electrical equipment.

How to choose the right battery test equipment ?

It is a difficult process to choose the right and suitable battery test equipment for your different application. Here is some test equipment for your battery testing for checking battery the state of health.

VLF Hipot Test Equipment

What is VLF testing ?

VLF testing is a method to test Medium voltage and high voltage cable for verifying the cable insulation . VLF diagnostic testing is a withstand voltage test usually carried out at a frequency of between 0.1 Hz and 0.01 Hz rather than 50/60 Hz.

AC Resonance Test System Knowledge

Series resonance is related with circuit and series connection. It is a resonance condition that usually occurs in series circuits. Generally, A series resonance test system is classified into two types regulating the induction and regulating frequency. It is composed by an exciting transformer, variable frequency power, capacitive voltage divider and reactor.