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<a class='post-count-link' href='http://www.electrotechnik.net/2012_03_01_archive.html'>March</a>
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<li><a href='http://www.electrotechnik.net/2012/03/what-is-difference-between-sine-wave.html'>What is the difference between sine wave and non-s...</a></li>
<li><a href='http://www.electrotechnik.net/2012/03/what-are-trip-free-and-trip-on-circuit.html'>What are Trip Free and non-Trip Free Circuit Break...</a></li>
<li><a href='http://www.electrotechnik.net/2012/03/conditions-for-paralleling-two.html'>Conditions for Paralleling two Transformers</a></li>
<li><a href='http://www.electrotechnik.net/2012/03/innovations-in-dc-technology-by-abb.html'>Innovations in DC Technology by ABB</a></li>
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<a class='post-count-link' href='http://www.electrotechnik.net/2012_02_01_archive.html'>February</a>
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<li><a href='http://www.electrotechnik.net/2012/02/deep-cycle-batteries.html'>Deep Cycle Batteries</a></li>
<li><a href='http://www.electrotechnik.net/2012/02/peak-load-shaving.html'>Peak Load Shaving</a></li>
<li><a href='http://www.electrotechnik.net/2012/02/synchronous-compensators.html'>Synchronous Compensators</a></li>
<li><a href='http://www.electrotechnik.net/2012/02/thyrite-arrestors.html'>Thyrite Arrestors</a></li>
<li><a href='http://www.electrotechnik.net/2012/02/slow-blow-fuses.html'>Slow Blow Fuses</a></li>
<li><a href='http://www.electrotechnik.net/2012/02/kraft-paper-insulation.html'>Kraft Paper Insulation</a></li>
<li><a href='http://www.electrotechnik.net/2012/02/how-fluorescent-light-works-schematic.html'>How a Fluorescent Light Works - Schematic Animatio...</a></li>
<li><a href='http://www.electrotechnik.net/2012/02/water-cooled-busbars.html'>Water cooled busbars</a></li>
<li><a href='http://www.electrotechnik.net/2012/02/turbo-alternators.html'>Turbo Alternators</a></li>
<li><a href='http://www.electrotechnik.net/2012/02/what-is-pull-in-torque-and-pull-out.html'>What is Pull-in torque and Pull-out Torque in sync...</a></li>
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<a class='post-count-link' href='http://www.electrotechnik.net/2012_01_01_archive.html'>January</a>
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<li><a href='http://www.electrotechnik.net/2012/01/nitrogen-in-transformers.html'>Nitrogen in Transformers</a></li>
<li><a href='http://www.electrotechnik.net/2011/12/vacuum-circuit-breakers.html'>Vacuum Circuit Breakers</a></li>
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<li><a href='http://www.electrotechnik.net/2011/12/c-rating-and-battery-capacity.html'>C Rating and battery capacity.</a></li>
<li><a href='http://www.electrotechnik.net/2011/12/combined-instrument-transformers.html'>Combined Instrument Transformers</a></li>
<li><a href='http://www.electrotechnik.net/2011/12/what-are-primary-and-secondary-cells.html'>What are Primary and Secondary Cells ?</a></li>
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<li><a href='http://www.electrotechnik.net/2011/11/rod-earthing.html'>Rod Earthing</a></li>
<li><a href='http://www.electrotechnik.net/2011/11/capacitance-grading.html'>Capacitance Grading</a></li>
<li><a href='http://www.electrotechnik.net/2011/11/rated-voltage-factor-of-potential.html'>Rated Voltage Factor of Potential Transformers</a></li>
<li><a href='http://www.electrotechnik.net/2011/11/universal-motor.html'>Universal Motor - An Overview</a></li>
<li><a href='http://www.electrotechnik.net/2011/11/intersheath-grading.html'>Intersheath Grading</a></li>
<li><a href='http://www.electrotechnik.net/2011/11/single-circuit-and-double-circuit.html'>Single Circuit and Double Circuit Transmission Lin...</a></li>
<li><a href='http://www.electrotechnik.net/2011/11/proximity-effect.html'>Proximity Effect</a></li>
<li><a href='http://www.electrotechnik.net/2011/11/comparison-of-overhead-and-underground.html'>A comparison of Overhead and Underground Transmiss...</a></li>
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<li><a href='http://www.electrotechnik.net/2011/10/transposition-of-conductors.html'>Transposition of Conductors</a></li>
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<li><a href='http://www.electrotechnik.net/2011/09/xlpe-cables.html'>XLPE Cables</a></li>
<li><a href='http://www.electrotechnik.net/2011/09/tin-plated-copper.html'>Tin Plated Copper</a></li>
<li><a href='http://www.electrotechnik.net/2011/09/flexible-busbars.html'>Flexible Busbars</a></li>
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<li><a href='http://www.electrotechnik.net/2011/10/book-of-week.html'>Book of the Week</a></li>
<li><a href='http://www.electrotechnik.net/2011/08/permanent-magnet-synchronous-generators.html'>Permanent Magnet Synchronous Generators</a></li>
<li><a href='http://www.electrotechnik.net/2011/08/lockout-tagout.html'>Lockout /Tagout</a></li>
<li><a href='http://www.electrotechnik.net/2011/08/busbars.html'>Busbars</a></li>
<li><a href='http://www.electrotechnik.net/2011/08/fractional-horse-power-motors.html'>Fractional Horse Power motors</a></li>
<li><a href='http://www.electrotechnik.net/2011/08/lugs-in-wiring.html'>Lugs in wiring</a></li>
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<li><a href='http://www.electrotechnik.net/2011/07/equipotential-bonding.html'>Equipotential Bonding</a></li>
<li><a href='http://www.electrotechnik.net/2011/07/running-three-phase-motors-with-single.html'>Running Three Phase motors with single Phase suppl...</a></li>
<li><a href='http://www.electrotechnik.net/2011/07/phase-sequence-relay-for-motors.html'>Phase Sequence Relay for motors</a></li>
<li><a href='http://www.electrotechnik.net/2011/07/live-tank-circuit-breakers-and-dead.html'>Live Tank circuit breakers and Dead tank circuit b...</a></li>
<li><a href='http://www.electrotechnik.net/2011/07/earthing-switches.html'>Earthing Switches</a></li>
<li><a href='http://www.electrotechnik.net/2011/07/can-dc-coil-of-contactor-be-used-with.html'>Can a DC coil of a contactor be used with AC or vi...</a></li>
<li><a href='http://www.electrotechnik.net/2011/07/wooden-transmission-poles.html'>Wooden Transmission Poles</a></li>
<li><a href='http://www.electrotechnik.net/2011/07/etap-software.html'>ETAP Software</a></li>
<li><a href='http://www.electrotechnik.net/2011/07/contactors-and-iec-classification.html'>Contactors and IEC Classification</a></li>
<li><a href='http://www.electrotechnik.net/2011/07/duty-cycles-of-motors.html'>Duty Cycles of Motors</a></li>
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<li><a href='http://www.electrotechnik.net/2011/06/stray-voltages-from-power-lines.html'>Stray Voltages from Power Lines</a></li>
<li><a href='http://www.electrotechnik.net/2011/06/what-is-meant-by-right-of-way-of.html'>What is meant by Right of Way of a Transmission Li...</a></li>
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<a href='http://www.electrotechnik.net/2012/03/what-is-difference-between-sine-wave.html'>What is the difference between sine wave and non-sine wave ups</a>
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Inverters are circuits which convert DC into AC. Inverters are an integral part of UPS (Uninterrupted Power Supplies). They convert the DC stored in the batteries of the UPS and produce an AC voltage which is provided to connected load in the event of a power failure. </div>
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The AC produced by the inverter is not always a sine wave. Some inverters produce a square wave. These inverters are known as square wave inverters. Square waves can be used where the load on the UPS is going to be mostly
resistive loads such as heaters, incandescent lamps, etc.</div>
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Another form of inverter output is the modified sine wave or the quasi-sine wave inverter. These inverter produce a waveform that has an intermediate voltage level which brings it closer to a sine wave. </div>
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Sine wave inverters produce an actual sine wave. Sine wave inverters are more expensive than the square wave and the modified sine wave inverters. However, they are ideal as electric devices such as motors, Television sets, chargers are designed to use a natural sine waveform. Using square wave inverters on these devices can produce harmonic distortion, humming. This leads to reduced efficiency and loss of power. </div>
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Trip Free Circuit Breakers are circuit breakers which can trip even if they are held in the "ON" position. Hence, it is not possible to forcibly keep them in the closed position. Trip free circuit breakers are used in circuits with equipment which are sensitive to overload and in circuits which are not critical.</div>
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Non-Trip Free circuit breakers are used in circuits which are critical for plant operation and for safety. In these systems, it may be economical to lose a motor or a heater than to interrupt the manufacturing process. In these circuit breakers, the trip function can be bypassed by forcing the circuit breaker to the on position. </div>
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