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SamplexPower PST-1000-12, Owner'S Manual, Page: 18 / 20

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SamplexPower PST-1000-12 Owner'S Manual Download Page 18

18  |  SAMLEX AMERICA INC.    

 

SECTION 4  |  

Powering Direct / Embedded Switch 

 

 

   Mode Power Supplies (SMPS)

Input voltage

Inrush current

Peak inrush

current

Rated steady state

input RMS current

NOTE: Voltage

and current scales

are different

Fig 4.1:  Inrush current in an SMPS

TIME

Peak Current

RMS Current

Non-linear

Input Current

Pulse

Input Sine

Wave Voltage

Crest Factor  =  Peak Current  =  3

RMS Current

Voltage (+)

Voltage (

–)

Cur

ren

t (+)

Cur

ren

t (

–)

NOTE: Voltage

and current scales

are different

Fig. 4.2:  High Crest Factor of current drawn by SMPS

Summary of Contents for PST-1000-12

Page 1: ...DC AC Power Inverter Pure Sine Wave PST 1000 12 PST 1000 24 Please read this manual BEFORE installing your inverter Owner s Manual...

Page 2: ...RRANTY AS TO THE ACCURACY SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION 2 ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES DAMAGES CO...

Page 3: ...sembly repair should be carried out by qualified personnel only Disconnect all AC and DC side connections before working on any circuits associated with the unit Turning the ON OFF switch on the unit...

Page 4: ...leling of the AC Output The AC output of the unit should never be connected directly to an Electrical Breaker Panel Load Centre which is also fed from the utility power generator Such a direct connect...

Page 5: ...conditions of high winds for wind generators high water flow rates for hydro generators It is therefore to be ensured that the diversion load is sized correctly to prevent the above over voltage condi...

Page 6: ...e L installation et le c blage doivent conformer aux Normes lectriques Locales et Nationales l installation doit tre faite par un e lectricien ne CERTIFI E 1 5 2 Pr vention des D charges lectriques Co...

Page 7: ...ec les batteries Les batteries pourraient produire un court circuit assez puissant pour souder des objets causant une br lure grave Si vous devez enlever la batterie retirez toujours la borne n gative...

Page 8: ...lectr iques Il faut donc s assurer que la charge de d rivation est correctement dimen sionn e pour viter les conditions de surtension ci dessus N utilisez pas de panneaux solaires pour charger direct...

Page 9: ...degrees by which the current vector leads or lags the voltage vector in a sinusoidal voltage In a purely induc tive load the current vector lags the voltage vector by Phase Angle 90 In a purely capac...

Page 10: ...vided by the AC source Hence the inverter AC wiring and over cur rent protection devices have to be sized based on the combined effect of the Active and Reactive Powers that is called the Apparent Pow...

Page 11: ...ge of power with a value of up to 8 times the Maximum Continuous Running AC Power AC to DC Switched Mode Power Supplies SMPS This type of power supply is used as stand alone power supply or as front e...

Page 12: ...orial sum of Active Power Watts and Reactive Power VAR The AC power source has to be sized based on the higher Apparent Power VA and also based on the Starting Surge Power 2 2 OUTPUT VOLTAGE WAVEFORMS...

Page 13: ...e Wave with very low harmonic distortion and cleaner power like Utility Grid supplied electricity Inductive loads like microwaves motors transformers etc run faster quieter and cooler More suitable fo...

Page 14: ...mmodate high short duration surge of power required during start up of certain AC appliances and devices Please read details of the above two types of power ratings in Section 2 1 under DEFINITIONS i...

Page 15: ...h Grinder 3 Incandescent Halogen Quartz Lamps 3 Ceramic Positive Temperature Coefficient PTC type of heaters 5 Laser Printer Other Devices using Infrared Quartz Halogen Heaters 4 Switch Mode Power Sup...

Page 16: ...of the inverter to the EMI receptors types and quality of connecting wires and cables etc EMI due to factors external to the inverter may be reduced as follows 3 2 1 EMI due to factors external to the...

Page 17: ...n is not sinusoidal but non linear as shown in Fig 4 2 The steady state input current of SMPS is a train of non linear pulses instead of a sinusoidal wave These pulses are two to four milliseconds dur...

Page 18: ...te input RMS current NOTE Voltage and current scales are different Fig 4 1 Inrush current in an SMPS TIME Peak Current RMS Current Non linear Input Current Pulse Input Sine Wave Voltage Crest Factor P...

Page 19: ...Negative direction and slowly increases in the Negative direction to a peak Negative value Vpeak 169 68V and then slowly drops back to 0V There are 60 such cycles in 1 sec Cycles per second is called...

Page 20: ...Opening for air discharge 7 Grounding Lug Wire hole diameter 5 16 Set screw 5 16 x 24 TPI 3 8 long Slotted Head 8 Negative DC Input Terminal 9 Positive DC Input Terminal 10 Modular Jack 6P6C for RC 15...

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