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Electrical Transducers
LP-VP-DSW window/dual slope voltage transducer

Data sheet

LP-VPW Window & LPVP-DSW Dual Slope
Voltage Transducers

The LP-VPW & LP-VP-DSW voltage transducers convert an ac voltage input into an output signal which is proportional to the rms calibrated arithmetic mean of the input.
Accurate measurement assumes a sinusoidal input waveform.
To enhance the resolution of the reading the transducer can be set up to operate with an input window or a dual slope output.
The window option suppresses the lower end of the range so that the transducer reads over a band of voltage centred on the nominal working voltage of the system being measured.
The dual slope option has a lower resolution at the low end of the range with a higher resolution centred on the nominal working voltage of the system being measured.
Power for the units is derived from an external supply.

Ordering information: LP-VP-DSW, input, output, power supply.
LP-VPW, input, output, supply.
Examples: LP-VP-DSW, input 0-80-140Vac, output 0-1.2-10V, supply 230Vac.
LP-VPW, input 90-130Vac, output 4-20mA, supply 110Vdc

Basic Specifications:
InputAll system voltages to 550V
Standard Window: ±20% of nominal input voltage
Dual Slope: ±20% of nominal input voltage provides 80% of output
Burden: 1mA @ Vnom
Overload: 1.5xVnom continuous
Frequency: 50Hz, 60Hz
OutputsLoad independent dc current and voltage  (others on request)
: 0 - 10mA dc <1500Ω load
: 0 - 20mA dc <750Ω load
: 4 - 20mA dc <750Ω load
: 0 - 5V dc >2kΩ load
: 0 - 10V dc >2kΩ load
Accuracy: Class 0.5 to IEC 60688
Range: 0 to 120% of nominal input
Power Supply: 24V, 110V, 230/240V ac ±20%, 1.5VA
: 24V dc ±20% or 110V/125V dc (88V-138V), 2W
IsolationGalvanic isolation between input, 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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