Specifications

G4500 BLACKBOX PORTABLE OPERATIONAL MANUAL
August 2010
Elspec | Website
77
Potential Transformer (PT)
Potential Transformer configuration is required only for a MV/HV networks
where the voltage is measured using PTs. When enabled, the Primary and
Secondary transformer values should be configured.
Nominals
The Nominals section defines the nominal values for frequency (F) and Vol-
tages (V). The Frequency nominal affects compliance (refer to Power Quali-
ty Section on page 60) and the EN61000-4-30 measurement window. When
50Hz nominal is set, the window is 10 cycles, and for 60Hz, it is 12 cycles.
The Voltage Nominal also affects the compliance engine (refer to Power
Quality Section on page 60) and PQZip recording (refer to PQZip on
page 111).
For maximum logging resolution and efficiency it is
recommended keeping NOMINAL values as close to
the expected normal condition values and NOT to
maximum values!