UPC Three Phase Power Sensor Specifications
|Accuracy||0.5% Full Scale||*||*||*||*|
|Full Scale Capacity||5HP** to 150HP||*||*||5HP to 150HP larger 0.9″ holes||3KW** to 100KW|
||3KW** to 100KW|
|Response Adjustment||0.5 Sec to 12 Sec||*||.050 Sec to 1.2 Sec||*||KWH, KWM, KWS|
|Frequency||3Hz to 1kHz||*||*||*||*|
|Power Comsumption||6VA at 120V||1VA at 230V||*||*||*|
*Specifications same as UPC unless noted
**For smaller motors take extra “turns” (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.
|The UPC Power sensors use balanced Hall Effect Sensors
Balanced Hall Effect sensors are used to measure power in kW and HP with non sinusoidal shapes and frequencies (like VFD Variable Frequency Drive). A Hall Effect sensor has these 2 characteristics:
Specify Model Number, (Voltage Network if not 460 Volts)
and output type (like 4-20mA)
0-1mA, 4-20mA, 0-5 Volts, 0-10 Volts the output is
powered by the Power Cell
UPC kW and AC Power Sensors
You can assess the kW load on an electric motor by measuring the electric current flowing to the motor (Amps). Typically this is not an ideal way since a lightly-loaded motor does not use the electricity very efficiently. In other words, the power factor is low.
A better way to understand the load is to measure the electrical motor power, measured in Horsepower or Watts. Motor power has a straight line relationship, so it works well even when the motor is lightly loaded.
Our UPC AC Power Sensors measure the motor load (Horsepower or Watts) and send an analog signal to meters, data acquisition equipment, computers or PLCs. Using this method, the operator can see load status allowing the controlling PLC or computer to make decisions.
The typical way to measure power, with non sinusoidal wave shapes is fairly complex. However our CE marked UPC range of Power Sensors offers customers a simple solution.
A Powertek UPC Power sensor measures motor power in kW. In addition, it has built-in relays and set points, which means the user can adjust the set point, if the motor load reaches the set point, a relay will trip. The relay acts as a switch and is used to turn on/off the machine, sound an alarm, or adjust the machine feed rate.