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.
What is a synchronous motor and where is it used
The device, the principle of operation and purpose of the synchronous motor. What are the types of synchronous machines and where are they used. Pros and cons of synchronous motors.
How to determine motor power with and without a tag - an overview of the techniques
How to find out the power of an electric motor without a tag by shaft diameter, idle current, size and other parameters. The determination procedure is described in the article.
What is a star and a triangle in an electric motor
The star and the triangle are the two main schemes for connecting the motor windings. Find out the difference between the two connection methods and how to choose the right one.
How to connect a three-phase motor for 220 and 380 volts - overview of schemes
How to connect an 380V asynchronous motor to three phases and to a single-phase 220V network. Typical schemes for connecting electric motors and the principle of their operation are described in the article.
Overview of the multimeter VAR-M01-083
Overview of the characteristics and operating principle of VAR-M01-083. Connection diagram of the multimeter to the electric network. The scope of this unit.
What is an induction motor and how does it work
What is an induction motor and what types of this type of electric machines are. A simple explanation of the design and operation of induction motors.
What is a rotor and stator in an electric motor
The rotor and stator are the two main parts of any electric motor and generator. What is it, what are they and what are they for, we considered in the article.
What are the types of electric motors and how do they differ
What types of electric motors are direct and alternating current, what are their differences. The classification of electric motors and their features are described in the article.
Is it necessary to put an RCD on the lighting according to the PUE
Installation of RCDs into the light is mandatory in hazardous and humid rooms, according to the PUE and GOST. When you need to put an RCD on the lighting, and when not, we tell in the article.
Overview of ABB circuit breakers S200, SH200l and Basic M series
What are the ABB series circuit breakers for domestic wiring? Differences of popular series and features. Advantages and disadvantages of ABB machines.
What is the difference between a bag and an automatic machine?
People confuse devices such as batch and circuit breakers. We will figure out what is the difference between a bag and a machine, comparing their purpose and features.
SonoFF Wi-Fi Relay Overview
Sonoff Wi-Fi relay is designed to turn on and off electrical appliances according to a given program or via the Internet. How to connect a Wi-Fi relay and how it works is described in the article.
What is a frequency converter, how does it work and what is it for
The frequency converter is used to control the speed of electric motors. The article discusses the device, the types of chastotnikov and their purpose.
What are converted machines and what threatens their use
What are converted circuit breakers and what is the punishment for using these devices. How to remake machines and what it is for.
The choice of the frequency converter for current, power and other parameters
Tips on how to choose a frequency converter for an electric motor. The correct choice of frequency in terms of power and current. What parameters still need to be considered.
XPole Home HNB-C16 / 1N / 003 differential machine overview
Overview of the xPole Home HNB-C16 / 1N / 003 differential machine from Eaton. Characteristics and description of the appearance of the device. Network connection diagram.
Overview of UZM-50Ts: what kind of apparatus and how to connect it
What is UZM-50C, what are the characteristics and functions of this device. Connection diagram of UZM-50Ts in a single-phase and three-phase network. User manual.
Modern methods of transmitting readings of electricity meters
Overview of modern methods of transmitting meter readings. Rules for transmitting testimonies via the Internet, telephone and bank terminal. Who should do this.
Overview of RCD Eaton xPole Home HNC-25/2/003
Overview of the Eaton xPole Home HNC-25/2/003 residual current circuit breaker. Characteristics and connection diagram of RCD from Eaton. Video review of the differential protection device.
Overview of the release of the maximum and minimum voltage RMM-47
Description of the characteristics and operating principle of the RMM-47. Wiring diagram for the undervoltage and undervoltage release. The purpose of the release in the shield.
Overview of the Eaton xPole Home HL-C16 / 1 circuit breaker
Overview of the machine Eaton xPole Home HL-C16 / 1. Characteristics and appearance of the circuit breaker. Description of improvements from the manufacturer.
What is a load cell and how does it work
The device, the principle of operation and the purpose of the load cell. What are the strain gauges and how each version works. Sensor connection diagram.
Surge OI-1 surge voltage limiter overview
What are the characteristics, the principle of operation and the scope of the impulse voltage limiter OIN-1. Connection diagram of the limiter and installation rules in the panel.
What is an antimagnetic seal on an electric meter and how does it work?
What is an anti-magnetic seal on an electric meter, what is its working principle and appearance. The legality of the installation of anti-magnets on metering devices.
