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Monthly Archive for: «February, 2011»

How To Use A Digital Multimeter

A digital multimeter is used to make various electrical measurements, such as AC and DC voltage, AC and DC current, and resistance. It is called a multimeter because it combines… Read more

Feb 23, 2011 | Edvard

How to use digital multimeter

Protection Relay – ANSI Standards

In the design of electrical power systems, the ANSI Standard Device Numbers denote what features a protective device supports (such as a relay or circuit breaker). These types of devices… Read more

Feb 22, 2011 | Edvard

ANSI codes for protection relays

What Is Modulation?

Modulation is the use of one electrical signal to “control” a primary variable of another. For example, if an audio signal voltage is used to control the “amplitude” of a… Read more

Feb 20, 2011 | Sa'ad Eddin

Modulation - addition of information (or the signal) to an electronic or optical signal carrier

IP Protection Degree (IEC 60529) Explained

The protection of enclosures against ingress of dirt or against the ingress of water is defined in IEC529 (BSEN60529:1991). Conversely, an enclosure which protects equipment against ingress of particles will… Read more

Feb 19, 2011 | Edvard

IP Protection Degree (IEC 60529) Explained

What Light Source To Choose?

One of the first decisions in the design of a good lighting system is the choice of a light source. A number of light sources are available, each with its… Read more

Feb 17, 2011 | Edvard

Light Sources and Lamp Characteristics

iFIX Scada Features

iFIX offers a robust SCADA engine, rich set of connectivity options, open architecture and highly scalable and distributed networking model. Used in a variety of applications across diverse industries, it… Read more

Feb 15, 2011 | Edvard

iFIX Scada Features

Few Facts About Three Gorges Dam

The Three Gorges Dam is the world’s largest hydropower project and most notorious dam. The massive project sets records for number of people displaced (more than 1.2 million), number of… Read more

Feb 12, 2011 | Edvard

Few Facts About Three Gorges Dam

What is the vertical illuminance?

Vertical illuminance is a component of lighting design that is vitally important to architecture. Its primary purpose is to make spatial proportions and spatial limits visible. The opposite is the… Read more

Feb 11, 2011 | Edvard

Vertical Illuminance - Introduction

Photovoltaic Module Interconnections

Copper conductors are recommended for almost all photovoltaic system wiring. Copper conductors have lower voltage drops and better resistance to corrosion than other types of comparably sized conductor materials. Aluminum… Read more

Feb 10, 2011 | Edvard

Photovoltaic Module Interconnections


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