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Testing of transformer oil and winding temperature indicators
Oil and winding temperature devices All large transformers have an oil or a winding temperature indicating device of some type,. Read more
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What happens when a transformer fire occurs in a substation
Transformer fire in a substation If a fire occurs as a result of a failure in a transformer, then the. Read more
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Basic measuring of resistance, voltage and current using digital multimeter
Few words about digital multimeter Digital multimeter has generally replaced the analog-type multimeter as the test device of choice for. Read more
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Why busbar trunking system is a space saving solution worth every penny
Busbar trunking system As line distribution boards, busbar trunking system (BTS) also belongs to the group of switchgear assemblies documented. Read more
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Motor wiring guidelines (Cable shielding, grounding and splicing techniques)
Motor wiring and noise This technical article describes shielding, grounding, and splicing techniques for use with motor wiring. This article. Read more
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Should you choose fixed or withdrawable medium voltage switchgear?
Fixed or withdrawable medium voltage switchgear? How to make the right choice between fixed or withdrawable medium voltage switchgear when. Read more
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Calculate reactive power of the capacitor bank and improve power factor
Dimensioning of the capacitor bank For the dimensioning of the capacitor bank to be installed in order to improve the. Read more
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What details a motor nameplate shows and how to use them
Motor nameplate details We have all seen the motor nameplate attached on the motor side (or on top). All motors. Read more
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Breaking of a short circuit current in a direct current system
Breaking of a short circuit current Direct current presents different problems than alternating current with aregard to the phenomena associated. Read more
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Direct and indirect measurements using CTs and VTs
Direct and indirect measurements In order to measure electrical quantities, the measuring instruments must be connected to the lines safely,. Read more
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Answer 20 questions correctly and prove you are good electrician
Good electrician never forgets It’s not easy to be a good electrician, that’s for sure. Things you studied hard (or. Read more
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4 essential implementations of protective relays in power systems
Protective relays in power systems In this technical article, protective relays are categorized depending on the component which are protect:. Read more
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When does exciting current inrush occur in power transformer?
Exciting current inrush When a transformer is initially energized, there is a phenomenon known as exciting current inrush. Although inrush. Read more
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What a ground fault circuit interrupter does and what it does not do
What a ground fault circuit interrupter (GFCI) does? A ground fault circuit interrupter (GFCI) monitors the current balance between the ungrounded. Read more
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Power flow in MV radial network and calculation of voltage drop and loss
Power flow in radial network Symmetrical load In three phase system the load for each phase should be the same.. Read more
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What is grounding and why do we ground the system and equipment?
What is grounding? The term grounding is commonly used in the electrical industry to mean both “equipment grounding” and “system. Read more
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How to locate harmonic currents and where to control them?
Harmonic currents On radial utility distribution feeders and industrial plant power systems, the main tendency is for the harmonic currents. Read more
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Three-phase transformer connections and vector groups for beginners
Transformer connections In theory a three-phase transformer works like three separate single-phase transformers with shared limbs in which the magnetic. Read more
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8 steps to follow in power substation design and engineering
Substation design and engineering Building a new substation or retrofitting the old one is a complex process full of design. Read more
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PLC start up and checking procedures before applying the power
PLC start up Prior to applying power to the system there are five important PLC start up and checking procedures. Read more
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