This is the ultimate logger for 3 phase electrical energy monitoring.

True RMS Measurement
Safe Voltage Connection
Tough, Waterproof Case
Housed in a rugged IP67 enclosure it can easily handle the harshest environment whilst continuing to provide reliable and dependable performance, on both single and three phase loads.
Voltage is measured via a standard wall socket, so connection is safe and easy, and the unit offers a host of features for effective and accurate energy monitoring.
The unit can also be used as a battery powered device for extended survey period
of up to 3 weeks duration.