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1.3.2 Advantages of Pure Sine Wave Inverters
The output waveform is a Sine Wave with very low harmonic distortion and cleaner power like Grid / Utility supplied
electricity.
Inductive loads like microwaves, motors, transformers etc. run faster, quieter and cooler.
More suitable for powering uorescent lighting xtures containing Power Factor Improvement Capacitors and single
phase motors containing Start and Run Capacitors.
Reduces audible and electrical noise in fans, uorescent lights, audio ampliers, TV, fax and answering machines.
Does not contribute to the possibility of crashes in computers, weird print outs and glitches in monitors.
Some examples of devices that may not work properly with Modied Sine Wave and may also get
damaged are given below:
Laser printers, photocopiers, and magneto-optical hard drives.
Built-in clocks in devices such as clock radios, alarm clocks, coffee makers, bread-makers, VCR, microwave ovens
etc. may not keep time correctly.
Output voltage control devices like dimmers, ceiling fan / motor speed control may not work properly (dimming /
speed control may not function).
Sewing machines with speed / microprocessor control.
Transformer-less capacitive input powered devices like (i) Razors, ashlights, night-lights, smoke detectors etc. (ii) Some
re-chargers for battery packs used in hand power tools. These may get damaged. Please check with the manufacturer
of these types of devices for suitability.
Devices that use radio frequency signals carried by the AC distribution wiring.
Some new furnaces with microprocessor control / Oil burner primary controls.
High intensity discharge (HID) lamps like Metal Halide lamps. These may get damaged. Please check with the
manufacturer of these types of devices for suitability.
Some uorescent lamps / light xtures that have Power Factor Correction Capacitors. The inverter may shut down
indicating overload.
Induction Cooktops.
1.3.3 Power Rating of Inverters
INFO
For proper understanding of explanations given below, please refer to denitions
of Active / Reactive / Apparent / Continuous / Surge Powers, Power Factor, and
Resistive / Reactive Loads at Section 1.2 under “DEFINITIONS”
The power rating of inverters is specied as follows:
• Maximum Continuous Running Power Rating
• Starting Surge Power Rating
Please read details of the above two types of power ratings in Section 1.2 under “DEFINITIONS”
SECTION 1.3 | General Information – Inverter Related
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