Category Archive for: «Energy and Power»

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 protect electrical… Read more

Feb 22, 2011 | Energy and Power

ANSI codes for protection relays

Technology Innovation Is Everybody’s Business!

For close to 10,000 years, science and technology have been at the heart of economic growth and social prosperity. From the agricultural revolution to the information revolution, advances in society have been… Read more

Feb 18, 2011 | Energy and Power

Technology Innovation


What’s this thing about AC anyway? A little history lesson might be in order. It all started when Edison built the first incandescent bulb and the power station to light it. A… Read more

Feb 08, 2011 | Energy and Power

AC vs. DC

Electrically Held Contactors – Siemens

Most lighting and heating applications require a contactor to control the loads. One type of contactor is an electrically held contactor, which is similar to a magnetic starter. Unlike a magnetic starter,… Read more

Feb 05, 2011 | Energy and Power

Electrically Held Contactors - Siemens type CLM

How To Reduce Energy Cost?

The main motivation for decision makers to take an interest in energy control solutions is economic efficiency. When deciding whether to invest in improvement work, the manager of a building, for example,… Read more

Jan 28, 2011 | Energy and Power

How To Reduce Energy Cost?

Grounded Systems

Grounded systems are equipped with a grounded conductor that is required per NEC Section 250- 23(b) to be run to each service disconnecting means. The grounded conductor can be used as a… Read more

Jan 26, 2011 | Energy and Power

Ecodial 3 – FAQ’s

Double click on the circuit. In the circuit description window, change the functional name of the circuit components. Remark : You may renumber the functional names with the Automatic numbering of the… Read more

Jan 22, 2011 | Energy and Power

Ecodial 3 - FAQ's

Do You Understand What Is Electric Shock?

Electric current passing through the body, particularly alternating current at power frequencies of 50 Hz and 60 Hz, may disrupt the nervous system, causing muscular reaction and the painful sensation of electric… Read more

Jan 02, 2011 | Energy and Power

Electric shock danger sign
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