Samlexpower PST-1000-12 Owner's manual - Section 2 |
8 | SAMLEX AMERICA INC.
UIFJOWFSUFS5IFJOWFSUFSDBOCFTJ[FECBTFEPOUIF"DUJWF1PXFSSBUJOH8BUUTXJUIPVU
creating overload.
Reactive Load:"EFWJDFPSBQQMJBODFUIBUDPOTJTUTPGBDPNCJOBUJPOPGSFTJTUJWFJOEVD-
UJWFBOEDBQBDJUJWFFMFNFOUTMJLFNPUPSESJWFOUPPMTSFGSJHFSBUJPODPNQSFTTPSTNJDSP-
XBWFTDPNQVUFSTBVEJPWJEFPFUD5IFTFEFWJDFTSFRVJSF"QQBSFOU1PXFS7"GSPN
UIFJOWFSUFSUPPQFSBUF5IF"QQBSFOU1PXFSJTBWFDUPSJBMTVNPG"DUJWF1PXFS8BUUT
BOE3FBDUJWF1PXFS7"3The inverter has to be sized based on the higher Apparent
Power (VA).
Output Voltage Waveforms
Fig. 2.1: Pure and Modified Sine Waveforms
5IFPVUQVUXBWFGPSNPGUIF4BNMFY145TFSJFTJOWFSUFSTJTBQVSFTJOFXBWFMJLFUIF
waveform of the grid power. Please see sine wave represented in the Fig. 2.1 that also
shows modified waveform for comparison.
*OBTJOFXBWFUIFWPMUBHFSJTFTBOEGBMMTTNPPUIMZXJUIBTNPPUIMZDIBOHJOHQIBTF
BOHMFBOEBMTPDIBOHFTJUTQPMBSJUZJOTUBOUMZXIFOJUDSPTTFT7PMUT*OBNPEJåFETJOF
XBWFUIFWPMUBHFSJTFTBOEGBMMTBCSVQUMZUIFQIBTFBOHMFBMTPDIBOHFTBCSVQUMZBOE
JUTJUTBU7TGPSTPNFUJNFCFGPSFDIBOHJOHJUTQPMBSJUZ5IVTBOZEFWJDFUIBUVTFTB
DPOUSPMDJSDVJUSZUIBUTFOTFTUIFQIBTFGPSWPMUBHFTQFFEDPOUSPMPSJOTUBOUBOFPVT[FSP
WPMUBHFDSPTTJOHGPSUJNJOHDPOUSPMXJMMOPUXPSLQSPQFSMZGSPNBWPMUBHFUIBUIBTB
modified sine waveform.
"MTPBTUIFNPEJåFETJOFXBWFJTBGPSNPGTRVBSFXBWFJUJTDPNQSJTFEPGNVMUJQMF
TJOFXBWFTPGPEEIBSNPOJDTNVMUJQMFTPGUIFGVOEBNFOUBMGSFRVFODZPGUIFNPEJåFE
TJOFXBWF'PSFYBNQMFB)[NPEJåFETJOFXBWFXJMMDPOTJTUPGTJOFXBWFTXJUIPEE
IBSNPOJDGSFRVFODJFTPGSE)[UI)[UI)[BOETPPO5IFIJHI
SECTION 2 |
General Information
TIME
180
160
140
120
100
80
60
40
20
0
20
40
60
80
100
120
140
160
180
Modified Sine
Wave sits at
ZERO for some
time and then
rises or falls
Modified Sine Wave
Sine Wave
Pure Sine Wave
crosses 0.0V
instantaneously