Electrical engineering Community

Electrical engineering Community is a forum you must visit and register. This forum helps Electrical installation & energy management Sharing technical & practical tips to build an optimum energy system for today and tomorrow. You will find discussions on day to day subjects on Electrical Engineering. I am a daily visitor of this site. Please follow the link below:

engineering.electrical-equipment.org/

Electricity Consumption by the Control System

Electricity Consumption by the Control System is an important factor in energy efficiency terms. A 400Ampere breaker consumes about 200 units of energy in an year! similarly the 5W indication lamp consumes about 50 units an year. So the ON OFF indication on a panel consumes 100 units an year. A control panel normally contain several indication lamps, coils etc. ( I am not considering the energy consumed by the long control cables). So it is important to address this problem while you design control circuits and control panels. On simple step towards energy efficiency of control panels is by selecting energy efficient components.

LT SWITCHBOARD–Low Tension Power Control Centre

LT SWITCHBOARD–Low Tension Power Control Centre is used to control power flow at low voltage level (415 Volt) three phase 3/4 wire systems. There are power distribution boards, Power Generation Control Boards, Feeder Control Boards and Motor Control Panels come under this category. I short these are system/panels which are used for 415 V (phase to phase) , for electrical distribution and motor control, in any type of industries. The boards are fabricated and comply with IEC 60439-1 as well as with derived national standards NF EN 60 439-1, VDE 0660 Part 5, DIN 41-488, BS 5486, NBN C63 439 and CEI Italy 542 concerning the construction of type-tested assemblies (TTA). Types of LT SWITCH BOARD – Low Tension Power Control Centre are:

PCC-Power Control Centre
PDB-Power Distribution
MPDB-Main Power Distribution Board

MCC-Motor Control
ACDB-Alternating Current Distribution Board

DCDB-Direct Current Distribution Board

Electrical calculation software free download

Electrical calculation software free download SIMARIS Software from Siemens is a bless for Practicing Electrical Engineers. This software is available free of cost from Siemens website. The latest version is a bit heavy for download but you can ask for a DVD copy of this software. Let us see what this software will do for us. I am copying exact words from Siemens site:

The SIMARIS software exclusively refers to the DIN VDE and IEC standards and is designed for products and installations for:

• Medium-voltage power distribution boards

• Transformers

• Switching and protection devices

• Low-voltage power distribution boards

• Distribution boards

• Connection elements (cables / busbar trunking systems)

If you are interested please visit the web page and request your Electrical calculation software free download at http://www.automation.siemens.com/mcms/electrical-design-software/en/service-support/simaris-software/Pages/default.aspx

Pros and Cons of Compact Fluorescent Lamps (CFL)

The cost of Compact Fluorescent Lamps (CFL) decreased since 1999. Now the power saving of Compact Fluorescent Lamps (CFL) is more than the initial cost for installing these energy efficient lamps. The countries like European Union etc are trying to ban incandescent lamps and switch completely to Compact Fluorescent Lamps (CFL). In this short article I am trying to investigate on the pros and cons of Compact Fluorescent Lamps (CFL) over incandescent lamps.

1. Compact Fluorescent Lamps (CFL) consume about 25% of the energy required for lighting up with incandescent lamps.

2. The life span of Compact Fluorescent Lamps (CFL) is 10 times more than that of ordinary incandescent lamps.

These two aspects contributes for energy saving and lower CO2 release worldwide. Now let us compare the cons of using Compact Fluorescent Lamps (CFL).

1. The toxic mercury contained in Compact Fluorescent Lamps (CFL) is one major drawback. Also the lead contained in electronic circuit poses danger.

2. Compact Fluorescent Lamps (CFL) takes longer time to light up and people may incline to keep this turned on when it is not required.

3. The cost of production of Compact Fluorescent Lamps (CFL) is more and the cost of recycling is also very high and this may neutralize some of the cost saving archived by CFL.

4. Compact Fluorescent Lamps (CFL) are very much sensitive to temperature variations and hence it is not suitable for external lighting.

5. In cold countries the incandescent lights contribute to room heating. This is not possible with Compact Fluorescent Lamps (CFL).

6. With Compact Fluorescent Lamps (CFL) dimming is not possible.

7. The light emitted by Compact Fluorescent Lamps (CFL) is confined to a smaller spectrum range and is a bit itching to eyes.

This may invite deeper thinking before implementation of Compact Fluorescent Lamps (CFL) by banning incandescent lamps. We may have to wait for Solid State Lighting (SSL) like LED lighting to save on energy and lights.

MacBook Air sets a new standard for notebooks

MacBook Air sets a new standard for notebooks. It has powerful processors, the world's most advanced operating system, easy access to thousands of apps and more. It is amusingly light weighted. With the latest Intel processors, MacBook Air is as fast and powerful as it is thin and light. With OS X Lion, The world's most advanced desktop operating system, you can interact with your MacBook Air using Multi-Touch gestures. The Mac App Store provides you the quickest way to get great apps is built into MacBook Air. iCloud stores your music, photos, documents and more, and wirelessly pushes them to all your devices - automatically. The latest i5 and i7 core processors make this mac book 2.5 times faster. Thunderbolt technology make MacBook Air to communicate faster. MacBook Air is available in India starting from Rs. 57000.00

Electrical Power Engineering Reference & Applications Handbook by K.C. Agrawal a book review.

Electrical Power Engineering Reference & Applications Handbook by K.C. Agrawal a book review. Electrical Power Engineering is a vast subject and people practicing as consultants in this field have to respond to a lot of issues. Nobody can remember all the technical details and reproduce them as and when required. So it is essential to have some books for reference purpose. Electrical Power Engineering Reference & Applications Handbook (ISBN 81- 901642- 5- 2) an upgraded edition of 'Industrial Power Engineering And Applications Handbook' (ISBN 0- 7506 -7351- 6) is worth mentioning in this regard. This Reference & Applications Handbook is a single source of all information needs in the subject area of power engineering. The book is divided in 5 parts: Electric Motors, Drives and Energy Saving, Switchgear Assemblies and Captive (Emergency) Power Generation, Voltage Surges, Over-voltages, Circuit Interrupters and Grounding Practices, Power Capacitors and Reactive Power Controls, Busbar Systems. The latest edition contain about 30% more than the previous edition.Electrical Power Engineering Reference & Applications handbook (ISBN 81-901642-5-2) is a 5-part comprehensive guide to all aspects of Electric Products, Electrical Machines Theory, performance and applications, testing and maintenance using latest IEC, IEEE, NEMA and ANSI Codes

You can buy this book online or from your nearest book seller. Those who want to review their book on this blog may please contact me at goldenweblinks@gmail.com