BASIC RACK PDU
12
Optional Local Monitoring
Power Meter
The Vertiv PM-1 power meter is a low-power, high accuracy meter capable of measuring true RMS Current,
Voltage, Power, and Power Factor. These values are individually shown on an easy to read, 4-digit LED
Display, which continuously scrolls through the four different measured values. Each one of these displayed
parameters is defined below. The Power Meter will automatically begin cycling through the displayed values
when the PDU is connected to AC Mains power.
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Current: PDU output current draw measured in true RMS Amps
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Voltage: PDU output voltage measured in true RMS Voltage
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Power: PDU output power measured in Watts
– referred to as real or active power
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Power Factor: Ration of real PDU output power to apparent PDU output power****
Power Meter Display
****Real power is the power in a circuit that is transformed from electric to non-electric
energy, while apparent power is the total power supplied to the circuit.
Current Meter
The Vertiv CM-1 current meter is a low-power, high accuracy meter capable of measuring true
RMS Current. The value of current is continuously shown on an easy to read, 4-digit LED Display.
The Current Meter will automatically begin to display value of output current when the PDU is
connected to AC Mains power.
Current Meter Display
