Tuesday, January 25, 2011

CrazyEngineers Forum - Electrical & Electronics Engineering

CrazyEngineers Forum - Electrical & Electronics Engineering

MEGGER launches new HV insulation testing instrument BM5200

Posted: 24 Jan 2011 10:10 PM PST

High voltage insulation testing is one of the crucial diagnostic test to be performed before any electrical installation. This is necessary to ensure the safety of the people and preventive maintenance. Taking into consideration the following needs Megger has launched HV insulation tester BM5200. It has the following features: 1.*** Convenient to use on day [...]

More...

Harmonics: Cause of Pollution of the Electrical Power Systems

Posted: 24 Jan 2011 08:40 PM PST

Harmonics, in today's scenario, is the first and fore most cause of pollution in the electrical power systems. Now having known this, let us now try to understand what harmonics are. Harmonics are the waveforms, that have frequencies in multiples of the fundamental frequency. For example, the fundamental frequency of our power system is 50Hz. [...]

More...

Peak shaving generators

Posted: 24 Jan 2011 01:56 PM PST

Hello, i want to design a peak shaving system. I want to have a circuit that can be able to start/stop and connect/disconnect a generator when there is a peak demand. it must be able to sense the load and then automatically start and connect a generator to the grid to meet the demand.

Need help.

Thanks in advance.

Colin

Current sensor for DC motor

Posted: 24 Jan 2011 06:45 AM PST

Hello All,
I am looking for current sensor to measure the consumed current by DC motor by using data acquisition card. I was thinking to use small resistance or Hall effect current sensor. My motor details are:
Nominal voltage= 42V,
Starting current = 20.3A
max. continuous current = 1.95A

The data acquisition card acquires max. voltage for +/-10V

My question are:
1- What is the best (using small resistance or using hall effect current sensor)?
2- Should I consider that maximum current is the starting current or max. continuous current before selecting the sensor?

Many thanks.

SCG3 Smart Strip – Energy Saving Power Strip

Posted: 24 Jan 2011 06:40 AM PST

Today in the 21st century, energy conservation is the need of the hour. Technologists work day and night to provide the society with good energy saving products. There is a type of power loss which takes place in electronic or electrical devices even when they are put off or are in standby mode.It is called [...]

More...
Posted by at

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)