Articles
What is DC Insulation (Meger) Test? What does it do, how is it done and why is it used?
2026-03-08T00:00:00+03:00
What is DC insulation megger test, what does it do and how is it done? The working logic of this method, which measures insulation resistance with direct current test voltage, the equipment on which it is used, what the Meger device measures, its difference from the hypot test, the evaluation approach and the points to be considered are explained in simple language.
What is AC Insulation Test (Performed with Tan Delta and Capacitance Measurement)? What does it do, how is it done and why is it used?
2026-03-08T00:00:00+03:00
How is AC insulation testing done with tan delta and capacitance measurement and what is its use? The working logic of capacitance and tan delta measurements made through the AC-based dielectric diagnostic approach, their difference from the classical AC hypot test, their usage areas, advantages and points to consider are explained in plain language.
What is DC Hipot Test? What does it do, how is it done and why is it used?
2026-03-07T00:00:00+03:00
What is DC hypot test, what does it do and how is it done? The working logic of this method, known as direct current high voltage test, its areas of use, its effect on insulation strength, its difference from AC and VLF testing, its advantages, limitations and points to consider are explained in plain language.
What is VLF Test? What does it do, how is it done and why is it used?
2026-03-06T00:00:00+03:00
What is VLF test, what does it do and how is it done? The working logic of this high voltage test method, known as Very Low Frequency, why it is preferred in medium voltage cables, its difference from AC and DC hypot tests, its usage areas, advantages and points to consider are explained in simple language.
What is Unit Protection Relay? What Does It Do, How Does It Work and Why Is It Used?
2026-03-05T00:00:00+03:00
What is a unit protection relay, what does it do and how does it work? The operating logic of the unit protection relay, which evaluates the generator, power transformer and connected equipment within a single protection zone, differential protection approach, auxiliary protection functions, usage areas and why it is critical are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Unit Protection Relays?
2026-03-05T00:00:00+03:00
What tests and maintenance should be done on unit protection relays? Secondary injection, differential protection test, auxiliary function verification, CT-VT chain control, trip circuit, binary inputs and outputs, event records and periodic maintenance steps are explained in plain language.
What are the Tests and Maintenances That Should Be Done on Breaker Failure Protection and Busbar Protection Relays?
2026-03-04T00:00:00+03:00
What are the tests and maintenance that should be done on breaker failure protection and busbar protection relays? Busbar differential characteristic verification, zone and check zone tests, breaker fault initiation logic, retrip and spare trip circuits, CT chain, disconnector status information, binary inputs and outputs, event records and periodic maintenance steps are explained in plain language.
What is Breaker Failure Protection and Busbar Protection Relay? What Does It Do, How Does It Work and Why Is It Used?
2026-03-03T00:00:00+03:00
What is breaker fault protection and busbar protection relay, what is it for and how does it work? Breaker failure protection and busbar differential protection logic, internal and external fault separation, zone selection, trip scenario, CT information and its effects on switchgear safety are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Overcurrent and Ground Protection Relays?
2026-03-02T00:00:00+03:00
What tests and maintenance should be done on overcurrent and earth protection relays? Secondary injection, pickup and time curve verification, I>, I>>, I0>, I0>> stages, CT and CBCT chain, directional ground protection test, trip circuit, binary inputs-outputs and periodic maintenance steps are explained in simple language.
What is Overcurrent and Ground Protection Relay? What is it for, how does it work and for what purpose is it used?
2026-03-01T00:00:00+03:00
What is an overcurrent and ground protection relay, what does it do and how does it work? Phase overcurrent and ground fault protection logic, I>, I>>, I0>, I0>> stages, IDMT and sudden tripping structures, residual current measurement, usage areas and protection coordination are explained in simple language.
What is Protection Relay? What is it for, how does it work and what types are there?
2026-02-21T00:00:00+03:00
What is a protection relay, what does it do and how does it work? The operating logic of protection relays that detect faults and abnormal operating conditions in electrical installations, basic relay types such as overcurrent, earth fault, differential, distance, voltage and frequency, and their usage areas are explained in simple language.
What are Relay Setting Calculations? What does it do, how is it done and why is it necessary?
2026-02-20T00:00:00+03:00
What are relay adjustment calculations, what are they used for and how are they done? In the protection relay settings, pickup, time curve, TMS/time dial, instantaneous opening, earth fault setting, directional protection, short circuit data and selectivity logic are explained in simple language.
What is Short Circuit Analysis? What does it do, how is it done and why is it necessary?
2026-02-19T00:00:00+03:00
What is short circuit analysis, what does it do and why is it done? The purpose of short circuit analysis to calculate possible fault currents in electrical installations, 3-phase and ground faults, symmetrical and asymmetrical currents, equipment selection, protection coordination and security effects are explained in plain language.
What are the Tests and Maintenances That Should Be Done on Energy Analyzers?
2026-02-18T00:00:00+03:00
What tests and maintenance should be done on energy analyzers? Visual control, terminal and connection tightness, CT/VT circuits, communication infrastructure, screen and event records, accuracy verification, thermal inspection and periodic inspection steps are explained in simple language.
What is an Energy Analyzer? What Does It Do, How Does It Work, and What Does It Measure?
2026-02-14T00:00:00+03:00
What is an energy analyzer, what does it do and how does it work? The purpose of use of energy analyzers, which monitor voltage, current, power, energy, power factor, demand, harmonic and power quality data in electrical systems, their difference from meters, the parameters they measure and their usage areas are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Meters?
2026-02-10T00:00:00+03:00
What tests and maintenance should be done on electricity meters? Visual inspection, terminal and connection tightness, seal and cover checks, CT/VT circuits, accuracy verification, communication connections, thermal inspection and periodic metrological checks are explained in plain language.
What is a counter? What is it for, how does it work and what types are there?
2026-02-08T00:00:00+03:00
What is a meter, what does it do and how does it work? The energy measurement logic of electricity meters, active and reactive energy monitoring, mechanical, electronic and smart meter types, single-phase and three-phase usage and basic selection criteria are explained in plain language.
What are the Tests and Maintenances That Should Be Done in Compensations?
2026-02-06T00:00:00+03:00
What are the tests and maintenance that need to be done in compensation systems? Capacitor banks, contactors, fuses, reactors, power factor relay, current transformer connections, thermal inspection, harmonic effects and in-panel maintenance steps are explained in simple language.
What is Compensation? What Does It Do, How Does It Work and Why Is It Necessary?
2026-02-03T00:00:00+03:00
What is compensation, what does it do and how does it work? Reactive power compensation, power factor correction, capacitor banks, automatic compensation panel, harmonic effects and compensation types are explained in simple language.
What are the Tests and Maintenances That Should Be Done in OLTCs?
2026-02-02T00:00:00+03:00
What tests and maintenance need to be done on OLTCs? Motor-drive mechanism, tap changing behavior, diverter and selector section, oil health, auxiliary contacts, protective relays, dynamic resistance measurement and condition-based diagnostic methods are explained in simple language.
What is OLTC? What is it for, how does it work and for what purpose is it used?
2026-01-30T00:00:00+03:00
What is OLTC, what does it do and how does it work? The voltage regulation, operating logic, main parts, difference from off-circuit tap changer and usage areas of this transformer tap changer system, known as on-load tap changer, are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Metal Clads?
2026-01-29T00:00:00+03:00
What are the tests and maintenance that need to be done in metal clad switchgear systems? Visual control, compartment cleaning, withdrawable breaker and shutter mechanism, interlock tests, busbar and cable compartment checks, contact resistance, insulation, secondary circuits and thermal inspection are explained in simple language.
What is Metal Clad? What does it do, how does it work and what features does it have?
2026-01-27T00:00:00+03:00
What is metal clad, what does it do and how does it work? The definition of medium voltage metal-clad switchgear structure, the logic of separate metal compartments, the withdrawable breaker structure, its difference from the metal-enclosed system, usage areas and selection criteria are explained in simple language.
What are the Tests and Maintenances That Should Be Done on RMUs?
2026-01-25T00:00:00+03:00
What are the tests and maintenance that need to be done on RMUs? Visual inspection, mechanical movement and interlock verification, gas pressure gauge, cable bulkhead, ground connections, contact resistance, secondary circuit checks and thermal inspection are explained in plain language.
What is RMU? What is it for, how does it work and what parts does it consist of?
2026-01-23T00:00:00+03:00
What is RMU, what does it do and how does it work? The structure, functions, ring feeding logic, switch-disconnector and breaker types, usage areas and selection criteria of this compact medium voltage switchgear system, known as Ring Main Unit, are explained in simple language.
What are the Tests and Maintenances That Should Be Done on MV Heads?
2026-01-19T00:00:00+03:00
What are the tests and maintenance that need to be done on MV headsets? Visual control, surface cleaning, stress control zone inspection, connection tightness, screen and grounding scheme, thermal camera control, partial discharge, VLF and tan delta approach are explained in simple language.
What is MV Title? What is it for, how does it work and what types are there?
2026-01-18T00:00:00+03:00
What is an MV title, what does it do and how does it work? The functions, stress control structure, indoor and outdoor environment types, plug-in solutions, additional muffler difference and usage areas of this accessory used as a medium voltage cable termination are explained in simple language.
What are the Tests and Maintenances That Should Be Done on MV (XLPE) Cables?
2026-01-15T00:00:00+03:00
What are the tests and maintenance that need to be done on MV XLPE cables? Visual control, route inspection, header and additional bellhousing inspection, screen-ground continuity, sheath test, insulation evaluation, VLF, tan delta, partial discharge and thermal inspection are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Transformer Differential Protection Relays?
2026-01-11T00:00:00+03:00
What are the tests and maintenance that need to be done on transformer differential protection relays? Secondary injection, differential and restrain characteristic testing, inrush blocking verification, CT polarity and ratio control, vector group compensation, trip circuit, binary inputs-outputs and event records are explained in plain language.
What is Transformer Differential Protection Relay? What Does It Do, How Does It Work and Why Is It Used?
2026-01-09T00:00:00+03:00
What is a transformer differential protection relay, what does it do and how does it work? The current comparison logic, internal and external fault separation, percent differential characteristic, inrush prevention, harmonic restriction, CT compensation and usage areas of this protection relay, known as ANSI 87T, are explained in plain language.
What is MV (XLPE) Cable? What is it for, how does it work and what structure does it consist of?
2026-01-06T00:00:00+03:00
What is MV XLPE cable, what is it used for and how does it work? The structure, XLPE insulation logic, screen layers, usage areas, advantages and selection criteria of this cable used in medium voltage energy transmission are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Distance Protection Relays?
2026-01-06T00:00:00+03:00
What tests and maintenance should be done on distance protection relays? Secondary injection, zone 1 zone 2 zone 3 verification, direction determination, CT/VT circuits, trip circuit, teleprotection, event records and periodic maintenance steps are explained in simple language.
What is Distance Protection Relay? What is it for, how does it work and for what purpose is it used?
2026-01-05T00:00:00+03:00
What is a distance protection relay, what does it do and how does it work? The apparent impedance measurement logic of this protection relay, known as distance relay, its zone 1 zone 2 zone 3 structure, mho and quadrilateral characteristics, usage areas and its difference from the overcurrent relay are explained in simple language.
What is High Voltage Operation Liability? Why is it necessary and what is included?
2026-01-02T00:00:00+03:00
What is high voltage operation responsibility, why is it needed and what tasks does it cover? Operational safety, maneuvering order, maintenance coordination, single line diagram, grounding tests, periodic reporting and authorized engineer responsibilities in HV facilities are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Transformers?
2025-12-30T00:00:00+03:00
What are the tests and maintenance that need to be done on transformers? Visual control, oil and insulation health, DGA, ratio test, winding resistance measurement, bushing controls, thermal inspection, OLTC, cooling equipment and dry type transformer cleaning-maintenance steps are explained in simple language.
What are the Tests and Maintenances That Should Be Done on the Line Plug?
2025-12-22T00:00:00+03:00
What tests and maintenance should be done on the line plug? Visual inspection, main coil and tuning unit inspection, connection tightness, mounting structure, jumper controls, insulator and support elements, thermal inspection and PLCC performance verification are explained in plain language.
What are the Tests and Maintenances That Should Be Done on High Voltage Lines?
2025-12-21T00:00:00+03:00
What tests and maintenance should be done on high voltage lines? Line patrols, pole and tower checks, conductor and additional equipment inspections, insulator checks, ground wire and grounding verifications, thermal inspection, corridor maintenance and record management are explained in simple language.
What is a Line Plug? What is it for, how does it work and for what purpose is it used?
2025-12-20T00:00:00+03:00
What is a line plug, what does it do and how does it work? The function of this equipment, known as line trap or wave trap, in PLC/PLCC communication, its carrier frequency behavior, its effect on power frequency, its relationship with the coupling capacitor and its usage areas are explained in simple language.
What is a High Voltage Line? What is it for, how does it work and what parts does it consist of?
2025-12-15T00:00:00+03:00
What is a high voltage line, what is it for and how does it work? The basic components of this transmission infrastructure, which enables the efficient transportation of electrical energy over long distances, its operating logic, pole and insulator structures, ground wire, safety distances and usage areas are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Insulators?
2025-12-03T00:00:00+03:00
What tests and maintenance should be done on insulators? Visual inspection, surface contamination and crack inspection, mechanical connections, cleaning, UV/IR inspection, leakage current approach and detailed diagnostic steps where necessary are explained in simple language.
What is an Insulator? What is it for, how does it work and what types are there?
2025-11-16T00:00:00+03:00
What is an insulator, what does it do and how does it work? The functions, working logic, porcelain, glass and composite types and usage areas of insulators, which carry conductors in electrical systems and provide electrical insulation at the same time, are explained in simple language.
What are the Tests and Maintenances That Should Be Done in Substations?
2025-11-15T00:00:00+03:00
What are the tests and maintenance that need to be done in substations? Basic maintenance and testing steps in the substation, including power transformer, breaker, disconnector, earthing separator, measurement transformers, surge arresters, protection relays, grounding system, auxiliary DC feeds and thermal controls, are explained in plain language.
What are the Tests and Maintenances to be Done on Soil Separators (Soil Knife)?
2025-11-14T00:00:00+03:00
What tests and maintenance should be done on soil separators? Visual inspection, cleaning, contact surfaces, mechanical movement, interlock and position verification, grounding continuity, auxiliary contacts, connection tightness and necessary electrical controls are explained in plain language.
What is an Earth Separator (Soil Knife)? What is it for and for what purpose is it used?
2025-11-13T00:00:00+03:00
What is a soil separator, what does it do and how does it work? The function of this equipment, known as the grounding knife or earthing switch, its difference from the separator and breaker, its use in MV cubicles, its interlock structure and its feature of shutting off upon short circuit, are explained in simple language.
What is a Substation? What is it for, how does it work and what parts does it consist of?
2025-11-13T00:00:00+03:00
What is a substation, what does it do and how does it work? The basic parts, types and usage areas of the transformer center, which transforms the voltage level of electrical energy and carries out switching, protection, measurement and distribution functions together, are explained in simple language.
What is a Transformer? What is it for and what types are there?
2025-11-10T00:00:00+03:00
What is a transformer, what does it do, how does it work and why is it used? Transformer types such as power and distribution transformers, dry type and oil-filled transformers, measurement and isolation transformers; The working principle, conversion rate and usage areas are explained in simple terms.
What is High Voltage (HV)? Which Values Are Considered High Voltage?
2025-11-10T00:00:00+03:00
What is high voltage (high voltage), which voltages are considered HV and where are they used? LV–MV–HV limit values, high voltage line and substation examples, high voltage applications in transmission and distribution lines, and basic safety rules are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Surge Arresters?
2025-11-09T00:00:00+03:00
What tests and maintenance should be done on surge arresters? Visual control, surface contamination and crack inspection, connection and grounding checks, surge counter and disconnector verification, thermal inspection, leakage current evaluation, watts-loss and insulation tests are explained in simple language.
What is a surge arrester? What is it for, how does it work and what types are there?
2025-11-06T00:00:00+03:00
What is a surge arrester, what does it do and how does it work? The protection logic of this equipment, known as surge arrester, against lightning and switching strokes, metal oxide varistor structure, usage areas, surge arrester types and selection criteria are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Separators?
2025-11-05T00:00:00+03:00
What tests and maintenance should be done on separators? Visual inspection, cleaning, mechanical movement control, contact surfaces, interlock structures, position indicators, connection tightness, contact resistance measurement, insulation checks and operation verification with earth separator are explained in simple language.
What is a Separator? What is it for, how does it work and what types are there?
2025-11-03T00:00:00+03:00
What is a separator, what does it do and how does it work? The visible separation function of this equipment, also known as Disconnector, its difference from the breaker, its differences from the load disconnector, MV disconnector types and usage areas are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Breakers?
2025-11-02T00:00:00+03:00
What tests and maintenance should be done on breakers? Visual inspection, mechanical maintenance, on-off coils, auxiliary contacts, timing test, contact resistance measurement, insulation checks, minimum operating voltage, lubrication and maintenance steps specific to vacuum or SF6 breakers are explained in plain language.
What is a Cutter? What is it for, how does it work and what types are there?
2025-11-01T00:00:00+03:00
What is a cutter, what does it do and how does it work? The functions, operating logic, vacuum and SF6 breaker types, difference from disconnectors, usage areas and selection criteria of this equipment used as a circuit breaker are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Voltage Transformers?
2025-10-28T00:00:00+03:00
What tests and maintenance should be done on voltage transformers? Visual inspection, cleaning, primary fuse and connection checks, secondary circuit verification, ratio and polarity tests, burden evaluation, insulation tests, capacitance and dissipation factor checks for CVT are explained in simple language.
What is Voltage Transformer? What is it for, how does it work and what types are there?
2025-10-27T00:00:00+03:00
What is a voltage transformer, what does it do and how does it work? The connection type, operating principle, secondary voltage values, usage areas, inductive and capacitive voltage transformer types of this measurement transformer, also known as potential transformer, are explained in simple language.
What are the Tests and Maintenances That Should Be Done on Current Transformers?
2025-10-26T00:00:00+03:00
What tests and maintenance should be done on current transformers? Visual inspection, cleaning, connection checks, ratio test, polarity test, accuracy check, burden assessment, isolation, excitation and primary injection verification are explained in plain language.
What is a Current Transformer? What Does It Do, How Does It Work and How to Choose It?
2025-10-25T00:00:00+03:00
What is a current transformer, what does it do and how does it work? The working principle of current transformers used for measurement and protection purposes, 1A and 5A secondary structure, current transformer ratio, accuracy class, burden value, connection rules and selection criteria are explained in simple language.