Electric power consumers are facing issues of faults in power network. The faults are followed by fires, explosions, technogenic catastrophes, leading to tragic consequences. Correct actions to protect and expand electric equipment lifetime as well as to provide safety, information is presented. Comparative characteristic of voltage control relay of foreign and domestic origin is presented.
Any standby infeed automatic breaker (SIAB) is designed to control main parameters of network voltage in the mains and — in case of deviation from set parameters — switch onto standby infeed source.
Electrical facilities — the most important part of energy facilities in any companies. Expenses on maintaining electrical facilities — with spare parts, repair, wages, training — can be quite sufficient. How can the costs be reduced and what are the sources of income?
Technical maintenance and repair — the integrated operations to maintain functionality or intactness of industrial equipment during exploitation, storage and transportation. The aim of modern technical maintenance and repair is elimination of defects and failures of electric equipment.
The article explains why electric equipment fails, how technology of repair and manufacturing of electric machine influence its reliability and life time, as well as if it is possible to save on repair. Comparative characteristic is presented, advantages and disadvantages of modern thermosetting insulations of the two types: VES-2 and «Monolyth» are revealed.
Electric motors protecting device UBZ-301 ex «Novatech-Electro» company is basically new, economy device for protection of asynchronous motors, providing complete and effective electric motor protection from all kinds of network failures, rejects related to motor operation mode, as well as break-downs because of damages inside the motor or feed cable.
Most common types of protective devices for LED chains from transitive impulsive noise appearing in lighting system are presented. Main parameters which must be considered by the developer when selecting protective device are discussed, as well as mechanisms of LEDs failures.
Laser diode, developed by Mitsubishi Electric corporation, allows to reduce power consumption, enhance efficiency and simplify the scheme of receiver-transmitter of fibre-optic communication.
WAGO terminals are used to connect copper and aluminium single wire and stranded conductors, they possess reliable protection against accidental contact with live parts of the connection.
The works on creating full scale automated dispatcher control system and energy consumption accountability in the networks of «Kuzbass power networks company», the city of Kemerovo, are in progress, based on software-engineering system PTC KRUG-2000, using controllers DevLink-С1000.
Increased vibration is drastically reducing reliability of electric motor and dangerous for motor’s bearings. Under influence of inching and shock loads from vibrating rotor, the oil film in friction bearing can be destroyed and babbitt sub-melting can happen. In roller bearings, metal fatigue features are being developed fast, cracks and depressions of working surface are appearing, separators are being broken.
The project to erect the unique housing complex Knightsbridge Private Park in Moscow is putting high technical requirements to the technologies applied in construction. In this regard, non-standard engineering solution was selected — construction of two underground «invisible electric substations» with the highest class of power efficiency at the depth of 6 meters.
The strategies improving operation of high voltage switches are presented; the maintain costs at low level. Remote monitoring and modern inspection methods like radiography eliminate necessity in invasive maintenance programs, or is conducting advanced equipment changes.
The article is revealing the issue of assigning electric safety group certificates to the experts busy with workers› labour conditions assessment. The question if it is necessary or not to assign electric safety group certificates to the experts busy with workers’ labour conditions assessment is a serious issue demanding prompt and definite resolution on legislation level.
