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Product : PM1000+Serial Number : 100008201236Firmware : 4.21Software : 2.0.0.0Accessories : Universal Breakout box, serial number 100008800194
Item Under Test : DishWasherAnalyser Set-Up : Low Power measurement using universal breakout box connected as in voltech specification 86_637_0_5WMeasured Values : Power range to be measured 0 W to 1 WRemote Operation : USB connection to PC softwareQuestion : Standard EN 50564:2011 suggests a supply side voltage measurement for low power loads, as depicted in figure B.1. Is the connection of the breakout box suggested in specification 86_637_0_5W by Voltech compliant with such connection in figure B.1? If not, which is the internal schematic connection of the breakout box in terms of voltage and current measure?
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Dear Giacomo,
Your breakout box is compliant with figure B.1. At very low power loads the impedance of the Voltage channel, although high, becomes significant as it draws a small current from the supply. Wiring it in this way prevents this current from being measured by the power analyser.
Best regards,
Tim.
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