What is protection selectivity?
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.
Electrical equipment
Please specify the section:
Automata and RCD
Relays, contactors, sensors
Electric motors
Electric meters
What is relay protection and what is it for?
Purpose of relay protection and basic requirements for it. Find out what RPA consists of and where it is used in energy.
Tips for choosing a differential machine for home and apartment
Not sure how to choose a difavtomat for power and leakage current? For you, we have provided advice on choosing a differential machine for home, apartment and garden.
How to connect an SPD in a single-phase and three-phase network?
How to connect an SPD in the shield. Connection diagram for surge protection devices in single-phase and three-phase networks.
Classification of surge protection devices
What is a surge protection device, what it consists of and where it is used. The principle of operation of the SPD, protection classes and the difference between them.
What is difavtomat and what is it used for?
The device, purpose, scope and principle of operation of the difavtomat. Find out what a differential machine is, how it works and where it is used.
What is an RCD and how does it work?
The device, the principle of operation and the purpose of the RCD used in electrics. What does the residual current device consist of, how does it work and what is it for.
Why do I need a load priority relay?
What is a load priority relay, what is its principle of operation and purpose. Scope of the priority load selection relay.
The main causes of the operation of the difavtomat
Why the difavtomat works in the shield and what to do in this case. The main reasons for the operation of a differential automaton. Troubleshooting algorithm.
What is the UZM-51M for and how to connect it?
The principle of operation, purpose and connection scheme of the UZM-51M. Find out what you need, what it consists of and how the multifunction protection device works.
What is a pointer relay?
The device, the principle of operation and the purpose of the indicator relay, which is also called a signal. Find out what the indicator relay consists of and how it works.
Why do I need a maximum current relay?
The device, principle of operation and purpose of the overcurrent relay. Find out how the current relay works, what it consists of and what it is used for.
What is a self-propelled electric meter and how is it formed
Causes of self-propelled electricity meter. Find out why the meter spins without load and what troubleshooting methods exist.
Overview of the voltage relay HS Electro UKN-63s
Instructions for setting up and connecting the voltage control device. Characteristics and design features of UKN-63s.
How to connect an intermediate relay?
Not sure how to connect an intermediate relay to the network? In this article, we examined the connection diagrams of an intermediate relay, as well as video installation instructions.
Overview of the characteristics of the energy meter Energomera CE6803V
Technical characteristics of the TsE6803V counter from the company Energomera. Verification period, dimensions, decoding of the marking and description of the design of Energomera TsE6803V.
How to connect circuit breakers in the panel?
How to connect circuit breakers with a comb and jumpers. An overview of the main methods of connecting machines in the shield between themselves. Video installation tutorial.
Overview of the electricity meter Mercury 201
The main technical characteristics of the Mercury 201 counter and an overview of existing series. The correct connection diagram of the electric meter M-201.
What is a solid state relay and why is it needed?
Device, principle of operation and purpose of solid-state relays. Find out what these devices are, why they are needed and where they are used.
What is a phase monitoring relay and where is it used?
The device, principle of operation and purpose of the phase monitoring relay. Find out how the phase monitoring relay works, what it consists of, where it is used. The main types of devices.
What to do if the electric meter burns out and who should change it
Why did the electricity meter burn out and what to do in this case. The reasons for the combustion of the meter. Who should change the meter.
How to replace old traffic jams with automatic machines?
How to replace traffic jams with automatic machines with your own hands. Circuit breaker connection diagram. Instructions with photos and video examples.
How is the verification of electricity meters
How is the calibration of electricity meters carried out and what are the deadlines for completing the work. Who pays for the verification of the electricity meter and how much does it cost?
Connection diagram of test box with current transformers
Connection diagram of the test box to the Mercury counter. Find out how to connect an ICC box with current transformers. Video installation instructions.
What is a packet switch and what is it for?
The device, purpose and principle of operation of the packet switch. Find out what the bag is, where it is used and how it works.
Rules for sealing electric meters
Step-by-step instructions on how to seal an electricity meter. Dates of sealing the electric meter, the cost of work, an overview of typical problems.
