USA Discount Generators

NORMAL UTILITY POWER SINE-WAVE WITH AVERAGE 3% HARMONIC DISTORTION AND LESS THAN 25 TIF*

GILLETTE POWER SINE-WAVE WITH 

AVERAGE 7% HARMONIC DISTORTION 

AND NOT MORE THAN 125 TOTAL TIF*

COMPETITORS GENERATOR POWER SINE-WAVE WITH MORE THAN 35% HARMONIC DISTORTION AND AVERAGING MORE THAN 520 TIF*

In the past, much attention was given to portable generator features such as voltage regulation, speed regulation, or maintenance free brushless generators.  A little known, but now far more important feature has been overlooked and ignored; the quality of the generated sine-wave (sometimes known as wave-form).

Just what is a sine-wave?  Electric current is measured in hertz, the international unit of frequency, and it equals 60 cycles per second.  A single cycle or wave-form, is called a sine-wave and is graphically displayed to show how clean, or distortion free, a sine-wave can be.  Telephone Influence Factor (*TIF), is another important ingredient of the power sine-wave.  Specification MG 1-22.43 allows a maximum 250 TIF for safe operation of generator electric loads.  Most portable generators will produce a sine-wave that is almost double this TIF maximum value.

Why is a clean sine-wave important?  Most voltage sensitive loads such as UPS systems, computers, microprocessors, and all other micro-chip laden equipment, can withstand up to 10% harmonic sine-wave distortion and total 250 TIF without the possibility of in-operative or damaged equipment.

As shown in above (3) graphs, represented from oscilloscope readings, the utility power easily is within 10% range, as well as almost all large 1800 RPM stationary generators.  Only portable, 2-pole, 3600 RPM generators, are in question, concerning sine-wave performance, due to it's limited space for adequate electrical steel laminations and copper wire.  A typical brush type portable generator, will produce between 15% to 25% harmonic sine-wave distortions.  Very few of this design generator is made, as it is of old design and in-efficient to operate.

A typical brushless portable generator with capacitor voltage regulation will produce from 30% to 40% harmful harmonic distortions to it's generated sine-wave.  This is the predominate generator design in use, today.

GILLETTE also uses the capacitor voltage regulator design.  However, by using an exclusive process of skewed laminations and aluminum damping bars, located at strategic points, we are able to  produce clean electric power, to be below 10% harmonic distortions.

GILLETTE easily meets this clean power requirement, allowing the smallest amount of sine-wave distortion and TIF, than any other portable generator.

IN TODAY'S TECHNOLOGY, WHILE OTHER PORTABLE GENERATOR MANUFACTURERS ARE STILL TRYING TO CATCH UP, GILLETTE HOLDS IT'S LEAD BY MOVING AHEAD.

GILLETTE'S EXCLUSIVE ROTOR DESIGN

All rotors are generally built in the same manner; 2 winding poles with lead wire connections to a slip ring (brush type), or diodes (brushless type).  The rotor wires are rotated within the stator core, producing an induced voltage within stator power windings.  Problem is, this type of power production, usually will have between 15%- 25% harmonic distortion of voltage sine wave for a slip ring rotor, and 30%-40% for a diode type rotor.  This is totally un-acceptable, for Gillette.  However, by using an exclusive process of precisely skewed rotor laminations and strategically placed aluminum damping bars, Gillette has been able to reproduce the voltage generated sine wave to produce an average of only 7% harmonic distortions.  To date, this is still a Gillette exclusive feature, from it's introduction year of 1994.