Global 5120 - Page 53

GlobalPowerTechnologies  5-2
5120
5.1.2 Current Shunt
Ashuntisusedtomeasurethecurrenttotheterminalblock.Thevoltagedropacrosstheshunt
isproportional tothe currentowingthroughit.Thecurrentshuntrating correspondstothe
amperescaleonthemeter.
5.1.3 Adjustments
A0to1ohm,300Wattvariableresistorlocatedinsidethecabinetmaybeusedtoadjustthe
outputpoweroftheCPinterface.Thisresistormaybeconnectedinseriesorparallelwiththe
TEG.SeeFigure28forseriesconnectionandFigure29forparallelConnections.
5.1.4 Series
Byconnectingthe300WattresistorinserieswiththeTEGthemaximumallowablepowermay
bedeliveredtotheCPload.Thisisachievedbymovingthetaptothebottomoftheresistor.
5.1.5 Parallel
Byconnectingthe300WattresistorinparallelwiththeTEGsmallerlevelsofpowermaybe
deliveredtotheCPload.Thismayberequiredwhenhotspotsoccurontheanode.Withthe
taplocatedatthetopoftheresistortheoutputpowerwillbezero.Asthetapismoveddown,
thepowertotheCPloadisincreased.
Figure 28 WiringDiagram,CPInterfacein
SeriesConnection
Figure 29 WiringDiagram,CPInterfacein
ParallelConnection