WANT TO KNOW ABOUT POWER FACTOR

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WANT TO KNOW ABOUT POWER FACTOR.  IT’S SIMPLE AS OF BEER JUG

Power Factor
Power Factor

 

 

Before discussing comparison,   let us know about basic terms about Power.

 

KW= is working power and also called Active power or Real power. It is the power that actually powers the machine or equipment and performs useful work.

 

KVAR= is Reactive power it exists in AC circuit when current and voltage are not in phase

KVA= is Apparent power transfers no net energy to the load, it is   sometimes called “watt less” power and it also express is the ‘Vectorial summation of KVAR and KW. Or it connected to power

Power Factor (KVAR) = KW /KVA

Now to compare with Beer Glass

We mention KVAR, KW, and KVA

KW= Consumable Quantity of Beer,

KVAR= is the Foam which cannot be consumed – waste.

KVA = it is total beer quantity you paid for the drink.

 

If you maintain proper Power Factor in your system, you can utilize maximum consumption of connected Power

www.electrikals.com will provide you the best Power factor Correction equipment’s for industries, commercial buildings, indoor and outdoor for providing Comfortable working environment.

To buy all types of cables,Glads, Relays and many more products online at very reasonable prices

please visit www.electrikals.com

If any queries please contact @ contact@electrikals.com

Methods of support for CABLES, CONDUCTOR SYSTEMS and WIRING

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Here we are describing methods generally applicable to supports on structures which subject only to vibration of low severity and low risk of mechanical impact

 

support for cables conductor system                          support for cables conductor system
1) For non-sheathed cables, installation in conduit without further fixing of the cables, precautions are being taken against undue compression or other mechanical stressing of the insulation at the top of any vertical runs exceeding 5m in length.
2) For cables of any type, installation inducting or trunking without further fixing of the cables, vertical runs not exceeding 5m in length without intermediate support.
3) For sheathed and /or armoured cables in horizontal runs which are inaccessible and unlikely to be disturbed, resting without fixing on part of a building, the surface of that part being reasonably smooth.
4) For sheathed and armoured cables in vertical runs which are inaccessible and unlikely to be disturbed, support at the top of the run by the clip and a rounded support of a radius not less than the standard values.
5) For sheathed cables without armour in vertical runs which are inaccessible and unlikely to be disturbed, support by the method described in above point; the length of the run without intermediate support not exceeding 2m for the lead- sheathed cable or 5m for a rubber-or-PVC sheathed cable.
6) For rubber or PVC- sheathed cables, installation in the conduit without further fixing of the cables, any vertical runs being in a conduit of suitable size and not exceeding 5m in length.

 

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To buy all types of cables, conductors of reputed brands online at very reasonable prices please visit www.electrikals.com

If any queries please contact @ contact@electrikals.com

ENERGY PERFORMANCE MEASUREMENT OF LIGHTING SYSTEM

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Lighting is provided in Homes, industries, commercial buildings, indoor and outdoor for providing the Comfortable working environment. The primary object   of performance measurement is to provide the required lighting effect for the lowest installed load i.e. highest lighting at lowest power consumption.

The purpose of   the performance test is to calculate the installed efficiency in terms of lux/watt/m2 for general lighting installation. The calculated value can be compared with the norms for specific types of interior installations for assessing improvement options.

ENERGY PERFORMANCE MEASUREMENT OF LIGHTING SYSTEM

Procedure for measurement of lighting system

To determine the minimum number and positions of measurement points

Room Index = RI  = L x W / Hm(L+W)

Where  L= length of interior; W = width of the interior; Hm = the mounting height, which is the height of the  light  fittings above the horizontal working plane. The working plane is usually assumed to be 0.75m above the floor in offices and  at 0.85m above floor level in manufacturing areas.

Determination of measurement points

Room index Minimum number of measurement points

      < 1

1 and <2

1 and <3

       3 and above

9

16

25

36

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If any queries please contact @ contact@electrikals.com

ELECTRIKAL CABLES

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Electrikal cables consist of
• Conductor for transmitting electric power
• Insulation to insulate the conductor from direct contact with other objects,
• External protection against mechanical damage, chemical or electrochemical effects, fire or any other dangerous effects external to the cable.

CONDUCTOR
bare conductor cable  wireThe copper conductor has been extensively used for cables. But aluminum conductor is also being now used to a large extent. Both copper and aluminum conductors are manufactured as per IS8130-1984.The conductors may be either solid or standard. Stranding of conductors provides good flexibility, making them easier to handle; they are less prone to kinks and breaks, and to a large extent it eliminates the risk of the conductor breaking through the dielectric. The wires in a stranded conductor are twisted together to form layers. Stranding consists of 6 wires around one, then 12 wires around six, then 18 wires around 12 and so on. A stranded conductor is expressed as 19/0.1 or 3/20 or 7/20, etc., where the first number stands for a number of strands, and the second number corresponds to the diameter of the conductor of each strand either in mm or in standard wire gauge.
INSULATION MATERIAL

Insulation cable vulcanized rubber cable

Insulation materials which are used in cables are:
– Vulcanized rubber
– Butyl rubber
– Silicon rubber
– Neoprene
– Styrene rubber
Polyvinyl chloride (PVC)
– Polyethene
– Impregnated paper
– Cross-linked polyethylene (XLPE)

Today, rubber insulation is not much in use in cable manufacturing; Only PVC insulation, Heat retardant polyvinyl chloride insulation (HRPVC) and XLPE are used.

PROTECTIVE MECHANICLE COVERING
Cables with PVC insulation over conductors are in mild steel conduits, raceways, ducts, PVC pipes, to provide external protection. Power cables are protected against mechanical damage by armouring with steel tapes or galvanized steel wires.

TYPES OF CABLES
The following types of cables are available in the domestic market.
Household cables, control cables, flexible cords, multicore flexible domestic appliance cords. These cables are manufactured as per IS-694-1990 and available in the 1100V grade.
• Heavy duty PVC insulated power cables: these are manufactured as per IS-1554-part II-1988 and are available in the 650V/1100V/11000V/22000V/33000V grade.
• Heavy duty paper insulated power cables: These are manufactured as per IS-692-1973 and are available in the 11000V/ 22000V/33000V grade.
• Heavy duty cross-linked polyethylene (XLPE) power cables: these are manufactured as per IS-7098-part II-1985 and are available in the 1100 V/ 11000 V/22000 V/33000 V grade.

www.electrikals.com will provide you the best performance equipment’s for Homes, industries, commercial buildings, indoor and outdoor for providing Comfortable working environment

 

To buy all types of wires, conductors, Insulation material wire reputed brands online at very reasonable prices please visit www.electrikals.com

If any queries please contact @ contact@electrikals.com

Switches – Modern trends and varieties

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In simple terms switch is a device which interrupts current in the circuit at a desired instance. It is a binary device which has two states.  Switch is a basic device required in any home or industrial or any area wheremodular swithces wood range electrical power is utilized for running apparatus. Switches are available in single/two/three pole and single/two way depending on the supply phases and requirement. In single phase circuits, one way switch is generally connected in phase and neutral is directly given to apparatus. This is simple application but for lighting in bedrooms it has become common practice to install two-way switches where we can operate lights and fans from two places i.e., at the entrance of room and also near the bed. In lengthy godowns, factories multiple two-way switches are generally used to switch ON/OFF lights as we go in and out.modular switches

The role of Switch from the customary function of breaking the circuit to multifunctional and decoration item has undergone many changes in technological as well as in outlook aspect. Recent trend in house wiring is to use modular switches which seamlessly integrate with the colour and texture of walls for more aesthetic look of the interiors. Motion sensing switches now widely used in smart homes, sense the motion and automatically switches ON/OFF fans

and lights in the room. IR switches is another type where connected apparatus can be switched ON/OFF by way of remote using Infra-Red technology. Time switches are also available which are switched by setting the time for ON/OFF operation. In the hotels the switches like hospitality range switches are used where key is inserted to switch ON the lights & fans in switch indicatorrooms. There are many other types of switches like touch switches, indicator switches, bell push switches etc. are also available in the market which can be used for specific purposes

The well-known old normal switch has been reformed into many shapes and one has to choose diligently the type of switch which suits the purpose. You can compare, choose and buy all the types switches online at the India’s largest core electrikal market www.electrikals.com

 

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