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Medium Voltage ♛

## Learn how to analyze MV switchgear wiring diagrams and single line diagram

Study specialized technical articles, papers & courses in low/high voltage fields. Save 50% on all courses at the EEP Academy with the Enterprise Plan.

1057 Search Results Found For: "power factor"

# power factor

Industrial Automation

## Requirements and Functions of Substation Automation

Substation automation is the cutting edge technology in electrical engineering. It means having an intelligent, interactive power distribution network including : Increased performance and reliability of electrical protection. Advanced disturbance… Read more

May 17, 2013 | By

Energy and Power

## Switching contactor and effect of long control lines

In accordance with IEC 60947-4-1 and IEC 60947-5-1, the normal control voltage range of power and control contactors lies between 85 … 110 % of the rated control voltage. Within… Read more

May 15, 2013 | By

Electric Motor

## Selection of Induction Motors for Industrial Applications (part 1)

All types of industries are invariably required to install different types of electric motors as prime mover for driving process equipment participating in their respective production line up. The continuous… Read more

May 03, 2013 |

Technical Guide/Paper

## Estimated Voltage Drop Calculator (XLSX Spreadsheet)

This voltage drop calculator is based on public domain formulae and will provide an approximate value for use in project design. The National Electrical Code Articles 210.19(A)(1) FPN No.4 and… Read more

Apr 23, 2013 | By

Low Voltage

## Defining Size and Location of Capacitor in Electrical System (2)

Continued from part 1: Defining Size and Location of Capacitor in Electrical System (2) Size of circuit breaker (CB), fuse and conductor of capacitor bank: A. Thermal and magnetic setting… Read more

Mar 11, 2013 |

Energy and Power

## An Overview Of Short Circuit Current (part 2)

Continued from previous technical article: An Overview Of Short Circuit Current (part 1) Sub transient reactance Xd” is the apparent reactance of the stator winding at the instant short circuit… Read more

Feb 27, 2013 |

Energy and Power

## An Overview Of Short Circuit Current (part 1)

There are essentially four types of faults: three-phase, single line-to-ground, double line-to-ground, and line-to-line. Each of these types of faults can result in different magnitudes of fault current. In all… Read more

Feb 25, 2013 |

Energy and Power

## Comparison of Protection Relay Types

This comparison summarize characteristics of all protection relay types described in previously published technical articles: Using Protective Relay For Fighting Against Faults The Good Old Electromechanical Protective Relay The Solid… Read more

Jan 23, 2013 |

Technical Guide/Paper

## Electric Testing and Maintenance (VIDEO)

Video lectures presented here give recommendations for field commissioning and maintenance of electrical installations and equipment. Videos cover low voltage as well as meidum/high voltage equipment and systems. The necessity… Read more

Jan 14, 2013 | By

Cables

## Testing and Commissioning of MV/HV Cables

Compare cable data with drawings and specifications. Inspect exposed sections of cables for physical damage. Inspect bolted electrical connections for high resistance using one or more of the following methods: Use… Read more

Jan 12, 2013 | By

Technical Guide/Paper

There are three different types of Adjustable Speed Drives (ASDs) on the market that primarily differ in the type of rectification they use to convert AC to DC and back… Read more

Jan 05, 2013 | By

Energy Efficiency

## Brightness, Lamp Life and Efficiency of LED Fixtures

A typical LED fixture comprises four major component parts: an LED emitter, the fixture’s heat sink, driver and dimming control, and augmenting optics. The emitter includes the die, a thermal… Read more

Jan 03, 2013 | By

Energy and Power

## Short-Circuit Switching Capacity Definition

The switching capacity is the r.m.s value of a current at a given power factor cosφ as well as a given rated voltage at which a switchgear or a fuse… Read more

Dec 20, 2012 | By

Energy and Power

## How to Predict Life Span of the Switchgear?

The life span of switchgear basically depends on the size of the load and the number of switching cycles. Instead of a time span, with electromechanical switchgear reference is usually… Read more

Nov 28, 2012 | By

Technical Guide/Paper

## Energy Saving Tools for Fan and Pump Applications

This thesis analyses the calculation of FanSave and PumpSave energy saving tools calculation. With these programs energy consumption of variable speed drive control for fans and pumps can be compared… Read more

Nov 24, 2012 | By