Monnit ALTA Industrial Wireless Three Phase AC Current Meter (500 Amp)

Monnit has introduced the ALTA Industrial Wireless Three Phase AC Current Meter (500 Amp), which measures the RMS current of an alternating current AC system by using three current transformers that wrap around the wires of a three-phase power system.

The wireless sensor reports minimum RMS current, maximum RMS current, average RMS current and duty cycle for each phase, plus the combined amp hours of all three phases. The iMonnit system is capable of generating watt-hour or kilowatt-hour readings based on user-specified RMS voltage. This makes it suitable for applications such as current monitoring, current usage, amperage monitoring, amp hour meter, watt-hour meter and kilowatt-hour meter.

To measure the current, clip the CT around a single wire of a powered system. Once the sensor has powered on and is connected to the gateway it will begin taking measurements. These measurements are based on the averaging interval (5 s default). The sensor reports data to iMonnit.

The current transducer measures current without making physical contact with the wire itself. This combined with the hinged clamping feature of the CT means no rewiring is needed. In a scenario where the user may have to open the outer sheath of multipair wire in order to access a single wire, there would be no need to open the jacket around any inner wires.