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Electrical Transducers
LP-PF1, LP-PF3 Phase Angle Transducers

LP-PF Phase Angle (Power Factor) Transducers

The LP-PF1 & LP-PF3 phase angle (power factor) transducers convert ac sinusoidal current and voltage input signals into a load independent dc signal proportional to the phase angle between the current and voltage waveforms.

Single PhaseThree Phase

Basic Specifications:
InputsCurrent: 1A or 5A (others on request)
Voltage: All ac system voltages to 440
Frequency: 50Hz, 60Hz
Nominal range, power factor &: 0.5 lead (+60°) to 1 (0°) to 0.5 lag (-60°)
phase angle (others on request): 1 ( 0°) to 0.5 lag (-60°)
OutputLoad independent dc current
(others on request): 0 to 10mA dc <1500Ω load
: 0 to 20mA dc <750Ω load
: 4 to 20mA dc <750Ω load
Accuracy: Class 0.5 to IEC 60688
Power Supply: 24V, 110V, 230/240V ac ±20%, 1.5VA
: 24V dc ±20% or 110V/125V dc (88V-138V), 2W
IsolationGalvanic isolation between inputs, output circuit and auxiliary supply
Test voltage: 4kV 50Hz ac for 1 minute
TemperatureOperating: 0°C to +23°C to +60°C
EMC Compliance: AS/NZS 61000.6.3:2012
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Carrel Electrade Limited
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