Unipower 40 A Motor Load Monitor, 100 → 400 V ac

HPL500 Digital Motor Load Monitor

The HPL500 replaces the HPL420 and also incorporates many new features, however it has been designed so that users of the HPL420 will be familiar with its set-up procedure. The display is used as a reference enabling true motor load, trip levels and all other variables to be displayed and programmed quickly and accurately using only three push buttons. For two speed motor applications an input allows the application to select the active limit
The HPL500 is usually mounted in the motor control panel and is connected to a convenient point on the motor supply (before Inverter - if used).
Therefore no external field wiring or sensors in the equipment are necessary. In addition to displaying true motor power in real time the units capture and, on demand, display the instantaneous minimum and maximum power levels to assist in setting up trip limits and fault diagnosis. The HPL500 features a current feed-through tube for measuring continuous motor currents up to 40 amps, (27.7kW at 3 x 400vac). Therefore no Current Transformer is required unless the motors continuous current exceeds 40A.
A specially designed power supply (Patent Pending) allows the motor voltage to be programmable from 100 – 400vac single phase and 100 – 575vac 3-phase making the HPL500 suitable for world-wide use.
The 0(4)-20ma analogue output, which is proportional to motor load, can be scaled to the range of measured power and can be inverted for use in closed loop control systems.

Approvals

CE, UL and GOST-R