What is the selectivity of protection of the electrical network. The main functions and types of selectivity of protection in electrical installations. An example of a selectivity map.
Purpose of relay protection and basic requirements for it. Find out what RPA consists of and where it is used in energy.
Overview of circuit breakers from the European company SEZ Krompachy. Design features and installation of machines, as well as their main advantage.
How is the varistor checked for serviceability. External inspection of a varistor and a proverb by a multimeter or a megaohmmeter. The causes of the malfunction.
What is a varistor, what is its principle of operation and purpose. The main characteristics of varistors. Rules for choosing this protective device.
What is a phase switch and where does it apply. Connection diagram of the phase switch to the network. Rules for choosing a switch between phases.
The main malfunctions of circuit breakers, their causes and solutions. What to do if the machine does not turn on or knocks out.
Overview of ultrasonic scanning devices-C1-40. What is a spark protection device for and how does it work? The connection scheme of the ultrasonic scanning device and checking its operability.
What are the limit switches for and what types of devices are. The principle of operation of the trailer (limit switch) and the scope.
Why do we need input-distribution devices and what types of ASU are. Complete set of input and distribution devices and their scope.
How to connect a cross over switch in a single-phase and three-phase network. Connection diagram of the ABB switch. Recommendations for installing a cross over switch.
How to connect a two-tariff meter in a single-phase and three-phase network. The procedure for switching to multi-tariff electricity metering.
The procedure for replacing an electric meter in an apartment and a private house. What documents need to be prepared in order to change the electricity meter. Who pays for the replacement.
What to do if the apartment does not have an electric meter. The main malfunctions of electricity meters. How to pay for light when the meter breaks.
The reasons for the excessive consumption of electricity at home, in the apartment and at the enterprise. What to do if increased energy consumption. Tips for saving electricity.
Why are traffic jams in the apartment being knocked out and what to do in this case? Causes of traffic jams. Where to go if the light goes out when the plugs are turned off.
How to replace the machine in the shield with a more powerful one or when the old circuit breaker fails. Rules for replacing circuit breakers in an apartment and a house.
Not sure how to test a difavtomat for working at home? 5 effective ways to test a differential automaton are described in the article.
Criteria for choosing a magnetic starter for the motor, lighting and other types of load. How to choose a magnetic starter for power, current and other parameters.
Technical characteristics of the electric meter СО-505. Connection diagram of the meter and overall dimensions. Design features of СО-505.
What is the ASTUE system. The principle of operation of an automated system for technical accounting of electricity. Unlike ASKUE,
Standard marking of energy meters and their interpretation. How to decipher the abbreviation on induction electric meters and electronic (Mercury 230).
The principle of operation and purpose of the UZM-3-63. Connection diagram of a multifunction protection device in a three-phase network. Technical characteristics of UZM-3-63.
How to choose a voltage relay for an apartment and a private house. Tips for choosing the characteristics of the voltage relay, manufacturer and version.
How to choose a current transformer for an electricity meter. Table and formulas for choosing a transformer for load current and power.
Consideration of schemes for connecting a three-phase RCD to a network with grounding. How to connect a four-pole residual current device.