12
Typical Form A Digital Output Use
Select an MOV (metal oxide varistor) or clamping diode that ensures the
output terminals do not receive voltage greater than 350 V peak during
switching.
Step 5: Wire the Voltage and Current Inputs
Voltage Input Specifications
Notes
1
Accuracy may be affected if the voltage on V1 falls below 50V.
Potential Transformers
PTs are required for all systems with voltage levels greater than these above.
The meter inputs can be used with PTs that have secondaries rated between
50 VAC and 347 VAC +25%.
PTs should comply with IEC 61010-1, Pollution Degree 2, Overvoltage
Category III requirements.
Connector Type Ring or split-ring, or bare wire.
Wire
14 to 12 AWG (2.1mm
2
to 3.3mm
2
)
Inputs
V1, V2, V3, V
REF
Rated Inputs
1
60 – 400 L-N (103.5 – 690 L-L) VAC
RMS (three phase)
60 – 400 L-N VAC (single phase)
Compliance
Installation category III (Distribution).
Pollution degree 2.
Overload 1500 VAC RMS continuous
Dielectric Withstand > 3250 VAC RMS, 60 Hz for 1 minute
Impedance
2 M
Ω/phase
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