My worst experience in the maintenance and supervision of medium voltage substations

While there are various voltage levels applicable across the globe depending upon the usability, the category of Medium Voltage remains one of the most critical voltage group comprising primary distribution…...

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Jun 01, 2020 | Bishal Lamichhane

The art of transformer maintenance, inspection and repair (recommended practices)

The primary purpose of transformer maintenance is to ensure the internal and external parts of the transformer and accessories are kept in good condition and “fit for purpose” and able… Read more

Feb 10, 2020 | Edvard

Protective grounding requirements for transmission and distribution lines

This technical article covers protective grounding requirements for steel tower and wood pole supported transmission and distribution lines, and insulated power cables. Protective grounds must be installed so all phases… Read more

Sep 25, 2019 | Edvard

Things you MUST know when commissioning low voltage switchgear and circuit breakers

Purchasing low voltage switchgear is not that easy, it’s not like purchasing a new TV or laptop. You have to be very experienced and deadly serious when specifying and ordering… Read more

Sep 23, 2019 | Edvard

Maintenance and troubleshooting guidelines for a typical high voltage switchgear

Like any other major component of the high voltage electrical network, a switchgear also needs maintenance schedules for trouble-free operation during its life cycle. No one should work on the… Read more

Aug 07, 2019 | Edvard

Troubleshooting Transformer In Power Substation And Detailed Failure Investigation

Failure of transformer in power substation is not a sudden phenomenon, for that matter each and every failure will take place only after alerting through some pre-signs. If they went… Read more

Nov 06, 2017 | Edvard

How do faults develop in a HV transformer and why condition monitoring is important

Condition monitoring equipment that can be used to extend the life of a transformer or to prevent catastrophic failure could pay for itself many times over. However, condition monitoring does… Read more

Jul 10, 2017 | Edvard

Lock-out tag-out practice and seven other steps that save lives

Lock-Out / Tag-Out (LOTO) refers to the specific practices and guidelines to safeguard employees from the unexpected start-up, movement, activation, energizing, release of energy, etc of machinery, equipment, plant, systems… Read more

Jun 16, 2017 | Edvard

Recommended maintenance practice for electric motors and generators

Motors are inherently highly reliable, requiring little routine maintenance. This remains true for most duties but may not be so where environmental conditions are aggressive, the starting duty is onerous,… Read more

May 25, 2017 | Edvard

Never underestimate electrostatic discharge (ESD) while working with data networking equipment

Let’s start with basics you probably already know, but nevertheless. It’s important to explain the basics first. Electrostatic Discharge (or ESD) refers to the transfer of electrostatic charge between bodies… Read more

Mar 08, 2017 | Edvard

Performing power factor test on dry-type transformer during commissioning

The power factor test is a maintenance test used to determine the insulation system dielectric power loss by measuring the power angle between an applied AC voltage and the resultant… Read more

Mar 01, 2017 | Edvard

Transformer exterior inspection and tests you MUST perform periodically

Periodic transformer exterior inspection (visual) reveals important condition information. For example, valves positioned incorrectly, plugged radiators, stuck temperature indicator and level gauges, and noisy oil pumps or fans. Oil leaks… Read more

Jan 25, 2017 | Edvard

Should you choose fixed or withdrawable medium voltage switchgear?

How to make the right choice between fixed or withdrawable medium voltage switchgear when selecting a new equipment for power substation? The following evaluation procedure should be conducted: Find out… Read more

Aug 22, 2016 | Edvard

Few good tips for low voltage switchgear maintenance and care

The low voltage switchgear involves many devices like power circuit breakers, MCBs, aux. relays, CTs, VTs etc. and of course at the end – enclosures (indoor or outdoor type). The frequency… Read more

Jul 18, 2016 | Edvard

Why does electric motor fail and what can you do about it?

As you already know, electric motor is used everywhere in industry and in term of technology – it’s already pretty complex, sometimes making it a challenge to keep it running at… Read more

Jun 16, 2016 | Edvard