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Archive: Category «Low Voltage»

Energy and Power

Arrangements of LV Utility Distribution Networks (2)

Continued from the previous part: Arrangements of LV Utility Distribution Networks (1) In the past, an underground cable service or the wall-mounted insulated conductors from an overhead line service, invariably terminated… Read more

Dec 01, 2012 | By Edvard

Arrangements of LV Utility Distribution Networks
Energy and Power

Arrangements of LV Utility Distribution Networks

In European countries the standard 3-phase 4-wire distribution voltage level is 230/400 V. Many countries are currently converting their LV systems to the latest IEC standard of 230/400 V nominal… Read more

Nov 30, 2012 | By Edvard

Arrangements of LV Utility Distribution Networks
Energy and Power

Purpose of Miniature Circuit Breakers (MCBs)

Miniature circuit breakers (MCB) are primarily designed to protect cables and lines against overload (thermal) and short-circuit (electromagnetic). They thus care for protecting this electrical equipment against excessive temperature rises and destruction… Read more

Nov 24, 2012 | By Edvard

Using Miniature Circuit Breakers (MCB)
High Voltage

Electrical Safety Standards for LV/MV/HV (Part-3)

Continued from part 2 – Electrical Safety Standards for LV/MV/HV (Part-2) Standard: Northern Ireland Electricity (NIE), 6/025 ENA Code: Indian Electricity Rules / Central Electricity Authority Right of Way Clearance… Read more

Nov 14, 2012 | By jiguparmar

Electrical Safety Standards for LV/MV/HV part 3
High Voltage

Electrical Safety Standards for LV/MV/HV (Part-2)

Continued from part 1 – Electrical Safety Standards for LV/MV/HV (Part-1) Standard: Northern Ireland Electricity (NIE), 6/025 ENA Clearances of Electrical Line to Ground and Roads Clearances of Electrical Line… Read more

Nov 12, 2012 | By jiguparmar

Electrical Safety Standards for LV/MV/HV part 2
High Voltage

Electrical Safety Standards for LV/MV/HV (Part-1)

Standard: Western Power Company Water Safely Clearance on Electrical Fires Minimum Approach Distance for Authorized Person Minimum Approach Distance for Ordinary Person Minimum Approach Distance for Vehicle and Plant for… Read more

Nov 07, 2012 | By jiguparmar

Electrical Safety Standards for LV/MV/HV (Part-1)
Energy and Power

Application of 4-pole Switchgear Devices

The majority of low-voltage switchgear is equipped with three contacts in the main circuit, which switch three-phase loads in all poles. In some applications switchgear with four main poles is… Read more

Oct 31, 2012 | By Edvard

Application of 4-pole Switchgear Devices
Energy and Power

Isolating the Fault With Time-based Discrimination

Protection functions form a consistent system depending on the overall structure of the power distribution system and the neutral earthing arrangement. They should therefore be viewed as a system based… Read more

Jul 22, 2012 | By Edvard

Isolating the Fault With Time-based Discrimination
Energy and Power

Definitions from the Standard UL 489 (MCCB)

The requirements of this standard cover molded-case circuit breakers (MCCB), circuit breaker and ground-fault circuit-interrupters, fused circuit breakers, and accessory high-fault protectors. These circuit breakers are specifically intended to provide… Read more

Jul 12, 2012 | By Edvard

Definitions from the Standard UL 489 (MCCB)
Low Voltage

Assemblies of switchgear and control panels (3)

Continued from 2nd part of article: Assemblies of switchgear and control panels (part 2) Now coverage of distribution panels and switchboards will be presented including molded case circuit breakers (MCCB), safety… Read more

Jun 30, 2012 | By Edvard

Assemblies of switchgear and control panels (3)
Low Voltage

Assemblies of switchgear and control panels (2)

Continued from 1st part of article: Assemblies of switchgear and control panels (part 1) Other components that are needed for the proper operation of the switchgear or control panel but not necessarily… Read more

Jun 29, 2012 | By Edvard

Assemblies of switchgear and control panels (2)


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