Birthday of Famous Persons

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Dr. Grace Murray Hopper – founder of COBOL computer programming language.

 

young-hopper

Leo James Rainwater was a Nobel laureate in Physics – for determining the asymmetrical shapes of certain atomic nuclei.

James Rainwater, US physicist

 

William Nunn Lipscomb, Jr. was a Nobel Prize-winning American Chemist, who worked in nuclear magnetic resonance, theoretical chemistry, boron chemistry and biochemistry.

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Henry Way Kendall was an American particle physicist who won the Nobel Prize in Physics for his pioneering investigations in particle physics.

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Shatrughan Sinha, Indian actor

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Diya Mirza, Indian actress

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Why To Use Clamp Meter

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An electrical meter with basic AC current clamp is known as a clamp meter. A clamp meter is an electrical

tester that merges a voltmeter with a clamp-type current meter. It combines a basic digital multi-meter with a current sensor. Clamps measure current and Probes measure voltage. Having a hinged “clamp” jaw integrated into an electrical meter allows users to simply clamp around wire, cables and other conductors at any point in the electrical system and measure its current, without disconnecting it.

Clamp Meter is used to measure:

AC current, AC and DC voltage, resistance, continuity, and, with some models, DC current, capacitance, temperature, frequency and more
Installation: Troubleshooting installation problems, performing final circuit tests and supervising apprentice electricians while installing electrical equipment.
Maintenance: Performing scheduled and preventive maintenance on electro-mechanical systems.

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Usage 

Industrial situations often call for simultaneous measurement as part of troubleshooting, so many of those users carry two meters: one to measure electrical current and one to measure voltage. For electricians, a clamp meter is a quick and versatile diagnostic tool for figuring out why an electrical system or piece of equipment is not operating correctly.

Importance Of Gland

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PG Gland (2)

A cable gland is a device used for entry of cables into an electrical distribution board so as to provide bonding, insulation, earthing, strain relief and secure connection. They are also used as a sealing and termination device to ensure that the characteristics of the enclosure which the cable enters can be maintained adequately.

Comet Single Compression Gland (2)

Cable glands are mechanical devices and can be constructed from metallic or non-metallic materials. They are used in all major electrical infrastructure and instrumentation installations where power, control, data or instrumentation cables are used and automation systems. 

Electrical Conduit

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Conduits-And-Accessories

An electrical conduit is a tubing system used for protection and routing of electrical wiring. Electrical conduit may be made of metal, plastic or fibre. Flexible conduit is available for special purposes. In India, we also call it Electrical Pipe.

Conduit is installed by electricians at construction sites while civil work of a building is in progress. Its use and installation details are generally as per IS standards and wiring regulations.

Electrical conduits provide good protection to concealed copper wires from impact, moisture, and chemical vapours. Also wiring changes are made simpler and safer through the use of electrical conduit, as existing conductors can be withdrawn and new conductors installed, with minimal changes. Metal conduits are used in commercial/public buildings and they also offer shielding from electromagnetic interference.

Types of electrical conduits

Inner Sight

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I still remember. I was in university those days studying Arts. Being from Arts Faculty, I was always surrounded by the creative & intellectual people. I also used to write poems.

One day while stepping down the stairs I heard a melancholy tune of flute. I was so engrossed and hypnotised by it that I follow the sound and ended up at the corner of the wide balcony. I sat there and enjoyed the harmony of the flute. That was the first day I saw him. He was a junior but his music maturity impressed me.

I started to meet him every day and we became very good friends. During one of the meetings, I discovered that he was not only a flute player but also a poet, a guitarist and on top an academic topper. A person full of qualities but “God forgot to give him vision”.

He was blind, blind from his childhood. No vision at all. Still this disability never became an obstacle in his life. He used to read with the help of brail.  Most of the time, he would record the lectures for his study. At that time I realized, even though he is blind yet his knowledge has outstripped his disability and I always found him self-reliant. And I always found it very odd, when people would come to him and sympathize about his blindness and ask questions like how it happened, when it happened.

We should all do our own soul-searching and we will actually be surprised to know that we all also have some form of disability, rather a mental block; wherein we fail to accept that a physically disabled person can be as efficient, independent and self-reliant like ourselves.

Let’s empathize with the disabled, let’s be friends with them and lets walk together with them in our life so as to make them feel as normal as possible.

Switch to Occupancy Sensor, enjoy your forgetting nature

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I often forget to switch off my lights. As a result, I end up paying extra in my electricity bill for being unable to switch off the electrical items on time. How to counter this laziness? I have found a new solution. What is it?

 

I have switched to Occupancy Sensor to save electricity. When I am not in the room, all the loads like light points or fans which are connected to this sensor, TURN-OFF automatically once I leave the room. Hence, I can continue to forget switching off my switches but still NOT pay extra bill.

Do you?

Do you know the difference between Watt and Lumen?

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Watts is unit for energy consumption whereas Lumen (luminous flux) is the light output/brightness of a lamp.

Generally higher wattage/energy consumption of a lamp implies higher lumen output.

Today people are moving from traditional GLS Lamps and Flourescent Tubelights to CFLs and LEDs.

In the 2000s, people first switched from traditional incandescent bulbs to CFLs or compact fluorescent lamps which offered same light output at 1/4th of power consumption. So we could replace a 60W GLS Lamp with a 15W CFL. Now we are moving from CFL to LEDs, which offer further 50% energy reduction. Hence 15W CFL can be replaced with an 8W LED lamp.Tubelights & CFLs

 

Lamps today have become more energy-efficient, which implies they give more light output (lumen) per watt.

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LED lamps that 3-4 years ago used to be 30-40 lumens per watt, are now touching  more than 100 lumens per watt and in labs, 200+ lumens/watt have been achieved.  Hence in coming years, you will see brighter lamps consuming lesser power, which means less CO2 emissions and hence contributing to environment improvement.

In layman terms:

100W GLS Lamp (Life 1000-2000 hours) has been replaced by 25W CFL (Life 5000 hours); which in turn is being replaced by 12W LED (Life 50,000 hours).

How does this translate into money-saving. We will explain this next week.

Where to use Coaxial Cables?

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Co-Axial Cables

Coaxial cable or coax is a kind of cable that has an internal performer delimited by a tubular insulating layer, surrounded by a tubular conducting shield. Loads of coaxial cables also have an insulating outer sheath. The terminology coaxial comes from the inner conductor and the outer shield sharing a geometric axis. Coaxial cable was invented by English engineer and mathematician Oliver Heaviside, who made the design in 1880. Coaxial cable differs from other shielded cable used for carrying lower-frequency signals, such as audio signals, in that the dimensions of the cable are controlled to give a precise, constant conductor spacing, which is needed for it to function efficiently as a radio frequency transmission line.

Applications

Coaxial cable is used as a transmission line for radio frequency signals. Its applications include feed lines connecting radio transmitters and receivers with their antennas, computer network (Internet) connections, and distributing cable television signals. One advantage of coaxial over other types of radio transmission line is that in an ideal coaxial cable the electromagnetic field carrying the signal exists only in the space between the inner and outer conductors. This allows coaxial cable runs to be installed next to metal objects such as gutters without the power losses that occur in other types of transmission lines. Coaxial cable also provides protection of the signal from external electromagnetic interference.

Know More to Save Yourself

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Thimbles or Lugs are used to terminate electrical wires/connections in a professional manner, thereby minimizing current leakage and hence avoids overheating/electrical failures due to loose or improperly terminated connections.  It is also important to use the right size/type of thimbles based on the size of electrical wires.

Aluminium Tube Thimble Copper Pin Type Copper Reducer (Bottle Type) Copper Tube Thimble Thimbles

 

Submersible Cables

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Submersible Cable

Submersible cables (also called 3core Flat cables) are designed for use in underground, under-water or on wet surface. These cables are manufactured with conductor using annealed exposed copper wires of electrolytic position, bunched correctly to confirm required flexibility. The conductor is additionally protected with thermo set type Cross Linked Polyethylene insulation with standardized thickness with each of the core colours in red, yellow and blue by using most modern equipment and extrusion modus operandi. The cover with uniform thickness of Heat and Moisture Resistant type PVC compound formulated and manufactured in-house, is extruded over these coloured cores in a flat formation. The colour of the sheath is black.

FEATURES

Higher current rating: It can withstand continuous conductor temperature of 90 degree Celsius as against 70 degree Celsius for PVC. This means higher current carrying capacity and hence it is possible to use one size lower than that of PVC for the same current. These cables can withstand extreme voltage fluctuations.

Higher overload capacity: it can withstand up to 130 degree during emergency overloading as against 120 degree for PVC. Hence, in case of emergency it can sustain for longer period of time compared to PVC.

Higher short circuit rating: It can withstand up to 250 degree Celsius under short circuit condition as against 160 degree C for PVC.

Lighter in weight and smaller bending radius: It has lower density than PVC which makes them lighter in weight and hence the bending radius is smaller than that of PVC.

Lower Di-electric constant and power factor: It results in saving in power losses which means saving in costs.

Better impact, abrasion, corrosion resistance: It is safer than PVC cables against mechanical damage, abrasion & corrosion.

Easier jointing and termination: It requires no special skills or equipment for jointing and termination.

Application: These cables enjoy longer and trouble free life and are ideally suitable for the giving the power connection in submersible pump motors used mainly for agricultural purpose and for ground water pumping in cities.