PH-3A and PH-1000 Power Cell
Power Transducers for wide ranging ac/dc loads

UK Tel: +44 1788 519911
US Tel: +1 631 913 3242
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  • Power Cells are stand-alone transducers
  • Analog output proportional to power(horsepower or watts)

  • Self-contained, no current or voltage transformers

  • Versatile, works with both fixed and variable frequency power

  • Optional 230V and 460V power available

  • Adjustable response 0.06 to 1sec, standard 15mS

Click here for the PH3A and PH1000 Datasheet | Click here for PH3A and PH1000 Installation Guide

General Information

Fast Response PH-3A Power Cell

PH-1000 Power Cell for Large Loads

  • Ideal for machine tool applications
  • Monitor fast load changes
  • Self-contained No PTs or CTs to install
  • Monitor motors up to 1000HP
  • 1-3/4" conductor openings
  • No PTs or CTs to install


Full Scale Capacity 460 Volt Network

Model Full Scale kW Scale
PH-3A-HHG 2HP 1.5
PH-3A-HG 4.5HP 3.3
PH-3A-10 10HP 7.5
PH-3A-15 14HP 10.4
PH-3A-20 21HP 15.7
PH-3A-30 32HP 23.9
PH-3A-40 43HP 32.1
PH-3A-50 53HP 39.5
PH-3A-60 64HP 47.7
PH-3A-70 75HP 56
PH-3A-80 85HP 63.4
PH-3A-90 96HP 71.6
PH-3A-100 107HP 79.8
PH-3A-350-140 149HP 111.2
PH-1000-100 102HP 76.1
PH-1000-200 213HP 158.9
PH-1000-300 320HP 238.7
PH-1000-400 427HP 318.5
PH-1000-500 533HP 397.6
PH-1000-600 640HP 477.4
PH-1000-700 747HP 557.3
PH-1000-800 853HP 636.3
PH-1000-900 960HP 716.2
PH-1000-1000 1067HP 796


For Voltage Networks Other Than 460 Volt Multiply Full Scale HP by:

115 Volts .25
185 Volts .4
230 Volts .5
255 Volts .55
380 Volts .83
415 Volts .9
580 Volts 1.26

For Small Loads:
The capacity can be reduced by taking additional "turns" with the wire through each hole for each phase.

Example: A 10HP unit is reduced to 5HP by taking two turns through each hole.  It is reduced to 3.33HP with three turns, etc.

Outputs Available:
0-1mA, 4-20mA, 0-5 Volts, 0-10 Volts.  The output is powered by the Power Cell


To Order:
Specify Model Number, Network Voltage (if not 460 Volts) instrument power and output.



** NOTE: The Current Networks do not limit current.  The Power Cell is not damaged by overloads.

Power Sensors

You can approximate the load of an electric motor by measuring the electric current flowing to the motor (Amps). However, this is not the best way to do it since a lightly-loaded motor does not use the electricity efficiently because the power factor is low.

A better way to know the load is to measure the motor power. (Power is measured in Horsepower or Watts.) Motor power gives you a straight line so it works well even when the motor is lightly loaded.

The Power Sensors that we manufacture measure the motor load (Horsepower or Watts) and can send a signal to PLCs, meters or data logging computers. This means the operator can see the actual load status and make make correct decisions.

Often measuring power is fairly complex. However, our Power Cell gives our customers a simple solution.

Load Control

A load control also measures motor power. In addition, it has built-in relays and set points (level trigger). The user can adjust the set point so that when the motor load reaches the set point, a relay will trip. (A relay operates like a switch, it can be used to turn off the machine, sound an alarm or adjust the feed rate).



Click here for the PH3A and PH1000 Datasheet | Click here for PH3A and PH1000 Installation Guide

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