3 phase induction motor theory Animation video

This video is help you to understand the basics of 3 phase induction motor.....

Read More

PSIM Software

PSIM Software PSIM Software PSIM is one of the fastest simulators for power electronics simulation. It achieves fast simulation while retaining excellent simulation accuracy. This makes it particularly efficient in simulating converter systems of any size, and performing multiple-cycle simulation. PSIM is...

Read More

Quick guide Residential wiring diagrams, Codes, And Symbols

Quick guide Residential wiring diagrams, Codes, And Symbols This book is about Residential wiring diagrams, Codes, And Symbols. From this book you can find the basic diagram of residential wiring. Different type of symbol used in drawing wiring diagram etc. Download:Download Boo...

Read More

The Switchboard Design Requirements

Switchboard Panel The Switchboard Design Requirements Design Rules The following rules of design have to be implement in the aim to facilitate the assembly and especially the maintenance of the installation. The switchboard must be designed the way to have a clearly visible separation between...

Read More

Maintenance Of Meduim Voltage Circuit Breakers

Medium Voltage Circuit Breaker Maintenance Of Medium Voltage Circuit Breakers Medium-voltage circuit breakers rated between 1 and 72 kV may be assembled into metal-enclosed switchgear line ups for indoor use, or may be individual components installed outdoors in a substation. Air-break circuit...

Read More

ABB – 145kV Compact indoor substation with Disconnecting CB

ABB – 145kV Compact indoor substation with Disconnecting CB Turnkey 145 kV S/S project for Borlänge Energi, Sweden, emphasizing the advantages of ABB Disconnecting Circuit Breakers. Small footprint enables indoor air insulated Switchgear solutions, increasing the power substation availability and reliability for the customer. As a complement to the basic version of our LTB circuit breakers,...

Read More

Basic Refrigeration Cycle

Basic Refrigeration Cycle Principles of Refrigeration Liquids absorb heat when changed from liquid to gas Gases give off heat when changed from gas to liquid. For an air conditioning system to operate with economy, the refrigerant must be used repeatedly. For this reason, all air conditioners...

Read More

Block diagram of a typical battery

Block diagram of typical battery Block diagram of a typical battery Figure  shows a simplified block diagram of a typical battery pack. It consists of the main battery cell and an equivalent series resistance (ESR). The internal impedance of a battery is dependent on the specific battery’s...

Read More

Why alternator rated in kVA. Not in kW?

Alternator Why alternator rated in kVA. Not in kW? The power √3 VL IL Cos φ delivered by the alternator for the same value of current, depends upon p.f. (Power Factor=Cos φ) of the load. But the alternator conductors are calculated for a definite current and the insulation at magnetic system...

Read More

Essential or need of starter with motor.

Essential or need of starter with motor. Motors below 1 Hp is directly connect without starter because their armature resistance is very high and they have ability to afford the high current due to high resistance. So the Armature winding safe from the high starting current.   But ...

Read More

Working principle of Transformer

Transformer Working principle of Transformer Transformer works on the principle of mutual induction of two coils or Faraday Law’s Of Electromagnetic induction. When current in the primary coil is changed the flux linked to the secondary coil also changes. Consequently an EMF is induced in the...

Read More

Why we can’t store AC in Batteries instead of DC?

Wave form of AC & DC Why we can’t store AC in Batteries instead of DC.or Can we store AC in batteries instead of DC? We cannot store AC in batteries because AC changes their polarity up to 50 (When frequency = 50 Hz) or 60 (When frequency = 60 Hz) times in a second. Therefore the battery...

Read More

Basic Electrical Quantities Formulas With Simple Explanation (in DC Circuits.)

Basic Electrical Quantities Formulas With Simple Explanation (in DC Circuits.) Voltage Current Resistance Power Power Electric power is the rate at which electric energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second. Current An electric current...

Read More

How to Wire a Switch and a Load (a Light Bulb) to an Electrical Supply

How to Wire a Switch and a Load (a Light Bulb) to an Electrical Supply?  As can be seen in the diagram the wiring is pretty simple. The Phase is invariably applied to one terminal of the switch, the other terminal moves to one of the connections of the load, and the other point of the...

Read More

Differences between E.M.F and Voltage (P.d)

Differences between E.M.F and Voltage (P.d) The following are the difference between E.M.F and P.D. The name E.M.F at first sight implies that it is a force that causes current to flow.But this is not correct because it is not a forced but energy supplied to charge some active device such as battery. E.M.F maintains p.d. while p.d. cause current to flow. When we say that E.M.F of a device...

Read More

Suzlon partners Brazil: adding 350 MW of wind energy capacity

Suzlon Group, the world's fifth largest wind turbine maker has completed installing and commissioning of over 350 MW wind energy in Brazil over a period of 16 months ending Nov 2014 with bulk of 309 MW being added in Calendar Year (CY)2014. This combined capacity includes projects located in...

Read More

The Best Applications For VFDs

VFD with induction motor Advances The most commonly used motor in building HVAC applications is the three-phase, induction motor, although some smaller applications may use a single-phase induction motor. VFDs can be applied to both.  While VFD controllers can be used with a range...

Read More