CHAPTER 4: PROGRAMMING S2 SYSTEM SETUP
PQM POWER QUALITY METER – INSTRUCTION MANUAL 4–23
120 = 35.0:1. This setpoint is not visible if VT WIRING is set to 3 WIRE DIRECT, 4 WIRE
DIRECT, or SINGLE PHASE DIRECT.
• VT NOMINAL SECONDARY VOLTAGE: Enter the nominal secondary of the VTs. If the
voltage inputs are directly connected, enter the nominal system voltage that will be
applied to the PQM. This setpoint is not visible if the
VT WIRING is set to 3 WIRE
DIRECT, 4 WIRE DIRECT, or SINGLE PHASE DIRECT. This value is used to scale an analog
output that is assigned to display voltage as a percentage of nominal.
• NOMINAL DIRECT INPUT VOLTAGE: This setpoint is displayed only if
VT WIRING is
selected as a direct connection. The nominal direct input voltage must be entered in
this message. This value will be used to scale an analog output that is assigned to
display voltage as a percentage of nominal.
• NOMINAL SYSTEM FREQUENCY: Enter the nominal system frequency. The PQM
measures frequency from the V
an
voltage and adjusts its internal sampling to best fit
the measured frequency. If the V
an
input is unavailable, the PQM will assume the
frequency entered here.
Courtesy of NationalSwitchgear.com
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