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Capacitive Voltage Transformers (CVT) For HV Measurements

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66 kV and upwards // Capacitive voltage transformers (CVTs) are used on higher voltage levels, starting from 66 kV and upwards. The type of the CVT is always a single-pole one, thus the connection is between phase and earth. The higher the voltage level is, the more price-competitive the capacitive type becomes. One of the […]

Measurement of residual currents on a distribution feeder

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Residual currents (earth fault) The measurement of the earth fault or residual currents on a distribution system feeder can be done by the so-called summation connection, where the three current transformers, one in every phase, are connected and the summated current is brought to the inputs of an earth fault protection relay. This is a […]

Guidelines To Metering Challenges and How To Overcome Them

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Metering Challenges // In the course of any metering exercise, there will be challenges that arise – these may occur in planning, specifying, purchasing, installing, or in the maintaining of the metering system. This technical article focuses on five common metering challenges with the hope that identifying these early in the process mitigates potential impact // Metering planning […]

Power Measurement On Four-Wire System Using Wattmeter Methods

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4-wire system for unbalanced loads A four-wire system is suitable to supply unbalanced, three-phase loads or single phase loads distributed on all three phases of a low voltage installation. When measuring power on a three-phase system, it is really necessary to take into consideration the fact that the three-phase power supply system might not be […]

Using digital multimeter for testing the charging system of your car

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Testing the charging system To be honest with you, this article is about testing the car charging system and it. Read more

Basic measuring of resistance, voltage and current using digital multimeter

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Few words about digital multimeter Digital multimeter has generally replaced the analog-type multimeter as the test device of choice for. Read more

Direct and indirect measurements using CTs and VTs

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Direct and indirect measurements In order to measure electrical quantities, the measuring instruments must be connected to the lines safely,. Read more

9 rules for correct cabling of the Modbus RS485 communication systems

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Modbus RS485 cabling rules The cabling of the industrial communication systems (Modbus RS485) is different in some ways from the cabling used. Read more

A case study of 110/10 kV substation with centralized protection, automation and control system

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Centralized substation protection and control Centralized substation protection and control has been attempted in the past based on the available. Read more

Basic three phase power measurements explained in details

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Basic principles of three phase systems Although single-phase electricity is used to supply common domestic and office electrical appliances, three. Read more

Top six solutions to achieve a high level of energy efficiency in buildings

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Energy efficiency in commercial buildings involves providing a given level of performance, cost, quality, availability, and comfort at a minimal level of energy usage throughout the lifecycle of a given asset or... Read more

Guidelines To Metering Challenges and How To Overcome Them

Power Measurement On Four-Wire System Using Wattmeter Methods

Using digital multimeter for testing the charging system of your car

Basic measuring of resistance, voltage and current using digital multimeter


Direct and indirect measurements using CTs and VTs

9 rules for correct cabling of the Modbus RS485 communication systems

A case study of 110/10 kV substation with centralized protection, automation and control system

Basic three phase power measurements explained in details

Top six solutions to achieve a high level of energy efficiency in buildings

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