Protection
Commissioning of protection relays using test equipment and software
Commissioning and maintenance With numerical protection relays commissioning and maintenance has become far less complicated as a result of the information provided by the devices as well as the integrated self-monitoring. The information provided here is restricted to general notes… Read more
Jan 16, 2017 | By Edvard Csanyi
Energy and Power
Troubleshooting dead circuit by testing continuity with disconnected supply
Dead circuit testing is testing performed with the power disconnected from the circuit. The main benefit of disconnecting power supply while tests with an external energy source are performed is to eliminate hazardous risks to the environment or the person… Read more
Nov 28, 2016 | By Edvard Csanyi
Energy and Power
3 good ways to improve earth electrode resistance
When you find that your earth electrode resistance is not low enough, there are several ways you can improve it: Lengthen the earth electrode in the earth Use multiple rods Treat the soil As you might suspect, driving a longer… Read more
Nov 25, 2016 | By Edvard Csanyi
High Voltage
High voltage station – Design, construction and commissioning process
Having selected the right site location for high voltage station, the design construction and commissioning process would broadly follow the steps shown in Figure 1. Recent trends in utilities have been toward sourcing design and construction of HV stations through… Read more
Nov 11, 2016 | By Edvard Csanyi
Energy and Power
Using Megger tester for these 3 types of insulation resistance tests
You know that good insulation has high resistance and poor insulation relatively low resistance. The actual resistance values can be higher or lower, depending upon such factors as the temperature or moisture content of the insulation (resistance decreases in temperature… Read more
Nov 04, 2016 | By Edvard Csanyi
Industrial Automation
3 easy measures for a good PLC system maintenance
Why need for PLC system maintenance when they are designed to be easy to maintain and to ensure trouble-free operation? Well, several maintenance aspects should be considered once the system is in place and operational. Certain maintenance measures, if performed… Read more
Nov 02, 2016 | By Edvard Csanyi
Industrial Automation
5 good methods to apply for successful PLC troubleshooting
PLC troubleshooting can be conducted through many approaches, with the engineer’s knowledge being a crucial factor in effectively resolving these issues; hence, five methods have been established. When we speak about PLC troubleshooting, maintaining an inventory of replacement components is… Read more
Oct 19, 2016 | By Edvard Csanyi
Industrial Automation
PLC start up and checking procedures before applying the power
Prior to applying power to the system there are five important PLC start up and checking procedures to perform. User should make several final inspections of the hardware components and interconnections. PLC start up and checking procedures before applying the… Read more
Sep 23, 2016 | By Edvard Csanyi
Testing and Commissioning
Testing of transformer oil and winding temperature indicators
All large transformers have an oil or a winding temperature indicating device of some type, and most have temperature recorders as well. Indication may be for top-oil temperature or hotspot temperature. Additional temperature-sensing equipment may be installed to provide alarm… Read more
Aug 10, 2016 | By Edvard Csanyi
Energy and Power
Electricity and water do not form a happy partnership, do they?
Electricity and water do not form a happy partnership and so it is often necessary to “dry out” insulation. This may be done to remove surface moisture or perhaps to drive moisture from the internals of the insulation. Indeed some… Read more
Jul 13, 2016 | By Edvard Csanyi
Protection
Commissioning tests of protection relays at site (before set to work)
Installation of protection relays at site creates a number of possibilities for errors in the implementation of the scheme to occur. Even if the scheme has been thoroughly tested in the factory, wiring to the CTs and VTs on site… Read more
Jul 11, 2016 | By Edvard Csanyi
Electric Motor
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 peak performance. It’s VERY important to remember that the causes… Read more
Jun 16, 2016 | By Edvard Csanyi
Testing and Commissioning
Do’s and don’ts when measuring insulation resistance of a transformer
This test is performed at or above rated voltage to determine if there are low resistance paths to ground or between winding to winding as a result of winding insulation deterioration. The test measurement values are affected by variables such… Read more
May 18, 2016 | By Edvard Csanyi
Metering
Using digital multimeter for testing the charging system of your car
To be honest with you, this article is about testing the car charging system and it isn’t applicable on new Tesla Model III or new BMW 7-series. As you can already guess from the title itself, all testings described below… Read more
May 16, 2016 | By Edvard Csanyi
Energy and Power
Six core activities in the commissioning of the earthing system
Commissioning of new earthing system is essential as a validation step for the design and installation process and for the design inputs. In most cases commissioning should measure the outputs of the earthing system in terms of produced voltages and… Read more
Apr 02, 2016 | By Edvard Csanyi
