126
Technical Specifications and Operational Parameters
12.3
AC Voltage and Current Inputs
AC Voltage and Current Input connectors allow for connecting to most common electrical systems.
All other values
−
such as power and energy
−
are derived from these measurements and the internal
GNSS-synchronized or IRIG-B synchronized clock. Possible input configurations and ranges are
specified below.
12.3.1
Input Configurations
3 Phase (3Φ)
3-element, 2 1/2-element, 2-element
1 Phase (1Φ)
2-element, 1 1/2-element, 1-element
12.3.2
Input Voltage
Range (3Φ/1Φ)
0 - 75, 150, 300, or 600 Vrms, selectable (phase-to-phase
for 2 element, phase-to-neutral for 2 1/2 and 3 element).
Over range
88, 175, 350 or 700 Vrms, nominal
12.3.3
Input Current
Range (3Φ/1Φ)
2.5, 5, 10, or 20 Arms selectable, per element
Over Range
2.9, 5.9, 11.7, or 23.5 Arms, nominal (maximum contin-
uous input current: 20 Arms per element)
12.4
Volt-Amps (VA), Watts (W), Volt-Amp-Reactance (VAR)
Range
Product of rated voltage and current ranges and number
of elements (for input configuration, see Section 7
−
“Configuring Measurement Parameters, DSP Mode”)
12.5
Compensating Constants and Ratios
CT and PT
Nominal ratios, magnitude and phase compensation, CT
uses quadratic spline curve model (see “Configuring the
1133A, Measurement Parameters”)
Transformer
Both iron and copper compensation
12.6
Input Frequency Range
Range:
45
−
65 Hz, for specified accuracy;
Harmonics:
To 3 kHz
