15 Safety Precautions for Electrical Systems

Visual Inspection of Transformers

Visual inspections of transformer components are fundamental to any comprehensive maintenance strategy.

Insulation class for oil immersed transformer

Oil immersed transformers often use Class A insulation, with a maximum heat-resistant temperature of 105°C.

What is the Distribution Transformer Vector Group?

Vector groups represent the phase difference between primary and secondary windings. They determine the transformer’s behavior in a power system.

What are the tests for mining transformers?

Varelen's transformer before delivery, For each transformer are prepared and issued a test report, in accordance with IEC 60076

Understanding Earthing Transformers

In a three-phase power system, one of the conductors is designated as the neutral point, which is typically connected to the earth for safety reasons. The earthing transformer is used to establish this connection. It ensures that the neutral point is at or near earth potential.

The torque specifications for transformers

Following torque standards also promotes energy efficiency and reduces the need for frequent maintenance, saving time and resources.

Guide to Transformer Harmonics and K-Factor

K-factor transformers are required to supply electricity to harmonicgenerating loads. Non-linear loads continue to proliferate in the market due to their desired benefit of reducing energy consumption.

How to do Insulation Resistance for Transformer?

welcome visit our factory see the transformer insulation resistance or see the test by video.

Round cast resin winding solutions

With cast resin technology, the performance of transformers is optimized because they provide protection from environmental conditions and/or insulate the medium voltage windings.

why choose line choke for wind power

The line choke is used for a 4Q converter in wind application. Several converters are connected in parallel to feed the power via a transformer into medium-voltage grid. On the one hand the choke has to smooth the current and on the other hand the choke is part of the line side filter to meet the power quality.

transformer oil leaks Analysis and repair

If your transformer's tank, weld lines, or radiator is leaking, it can be a bit more difficult to fix. The transformer may even need to be sent back to the factory for repairs. If you think you have one of these leaks, contain the oil the best you can and call the manufacturer for advice.