Samlexpower PST-1000-12 Owner's manual - Section 2 |
8 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 9
seCtIOn 2 |
General Information
frequency harmonic content in a modified sine wave produces enhanced radio interfer-
ence,higherheatingeffectininductiveloadslikemicrowavesandmotordrivendevices
likehandtools,refrigeration/air-conditioningcompressors,pumpsetc.Thehigher
frequency harmonics also produce overloading effect in low frequency capacitors due to
lowering of their capacitive reactance by the higher harmonic frequencies. These capaci-
tors are used in ballasts for fluorescent lighting for Power factor improvement and in
single-phaseinductionmotorsasstartandruncapacitors.Thus,modifiedandsquare
wave inverters may shut down due to overload when powering these devices.
Advantages of Pure Sine Wave inverters
• Theoutputwaveformisasinewavewithverylowharmonicdistortionandcleaner
powerlikeutilitysuppliedelectricity.
• Inductiveloadslikemicrowaves,motors,transformersetc.runfaster,quieter
and cooler.
• Moresuitableforpoweringfluorescentlightingfixturescontainingpowerfactor
improvement capacitors and single phase motors containing start and run capacitors
• Reducesaudibleandelectricalnoiseinfans,fluorescentlights,audioamplifiers,TV,
faxandansweringmachines.
• Doesnotcontributetothepossibilityofcrashesincomputers,weirdprintoutsand
glitches in monitors.
Some examples of devices that may not work properly with modified sine
wave and may also get damaged are given below:
• Laserprinters,photocopiers,andmagneto-opticalharddrives.
• Built-inclocksindevicessuchasclockradios,alarmclocks,coffeemakers,bread-mak-
ers,VCR,microwaveovensetc.maynotkeeptimecorrectly.
• outputvoltagecontroldeviceslikedimmers,ceilingfan/motorspeedcontrolmay
notworkproperly(dimming/speedcontrolmaynotfunction).
• Sewingmachineswithspeed/microprocessorcontrol.
• Transformer-lesscapacitiveinputpowereddeviceslike(i)Razors,flashlights,night-
lights,smokedetectorsetc.(ii)Re-chargersforbatterypacksusedinhandpower
tools. These may get damaged. Please check with the manufacturer of these types of
devices for suitability.
• DevicesthatuseradiofrequencysignalscarriedbytheACdistributionwiring.
• Somenewfurnaceswithmicroprocessorcontrol/oilburnerprimarycontrols.
• Highintensitydischarge(HID)lampslikeMetalHalidelamps.These may get damaged.
Please check with the manufacturer of these types of devices for suitability.
• Somefluorescentlamps/lightfixturesthathavepowerfactorcorrectioncapacitors.
The inverter may shut down indicating overload.