14 electrical characteristics of the motor you should know

Electrical characteristics like voltage, frequency and phase of power supply should be consistent with the motor nameplate rating. A motor will operate satisfactorily on voltage within 10% of nameplate value,… Read more

Oct 24, 2016 | Electric Motor

How electricians choose the most suitable protection devices

There are at least four main issues electricians must take care off very carefully when choosing the most suitable protection devices. Of course, there are dozen of other issues, but let’s try… Read more

Oct 21, 2016 | Energy and Power

5 good methods to apply for successful PLC troubleshooting

PLC troubleshooting can be performed in many different ways and as the engineer’s experience always plays the major role in successful resolving of such issues, five methods have been developed…. Read more

Oct 19, 2016 | Industrial Automation

Aluminium or copper busbar trunking system? What do you say?

These two materials (aluminium and copper) are both physically and economically viable for use as conductors in power busbar trunking systems (BTS). Some manufacturers of busbar trunking systems offer a… Read more

Oct 17, 2016 | Energy and Power

Practical tips for installation and using of thermistor motor protection

Thermistor is a small non-linear resistance sensors, which can be embedded within the insulation of a motor winding, to provide a close thermal association with the winding. It’s made from… Read more

Oct 14, 2016 | Electric Motor

Paralleling and ferroresonance as special problems with transformers

Occasionally, crews must install distribution transformers, either at a changeover or for extra capacity. If a larger bank is being installed to replace an existing unit, paralleling transformers during the… Read more

Oct 12, 2016 | Power Substation

Guidelines for good consumer unit design and low electric fields in the house

The consumer unit is the “fuse box” which goes between the electricity meter and all the electrical circuits in the house. Modern units do not contain fuses, but miniature circuit… Read more

Oct 10, 2016 | Energy and Power

Best practice for using surge protective devices (SPDs) and RCD together

Where the power distribution system incorporates RCDs transient activity could cause RCDs to operate and hence loss of supply. Surge protective devices (SPDs) should wherever possible be installed upstream of… Read more

Oct 07, 2016 | Energy and Power

4 steps to diagnose a potential harmonics related problem

If a plant engineer suspects that he might have a harmonics related problem, the following steps can easily be performed as an initial investigation into potential problems: Look for symptoms… Read more

Oct 05, 2016 | Energy and Power

Problems with audible substation noise and what you can do about it

Audible substation noise, particularly continuously radiated discrete tones (e.g., from power transformers), is the type of noise that the community may find unacceptable. Community guidelines to ensure that acceptable substation… Read more

Oct 03, 2016 | Energy and Power