Monitor three-phase circuits quickly and easily. Pre-calibrated to system level Class 0.5S accuracy. Fully wireless and secure communications. Connect many ZEM's in a wireless network back to the Gateway. Current transformers and all other accessories included!
Class 0.5S measurement as a system, with the current transformers already connected and calibrated to the meter, reporting over the wireless mesh to the Gateway.
Most three-phase meters are sold on their own, and the accuracy class covers the meter alone. A ZEM’s current transformers are fitted and calibrated against that meter before it ships, so Class 0.5S describes the whole measurement. Nothing to size, match or calibrate on site.
Rated to IEC 62053-22 for the meter and its current sensors together, from 0.1 A to 3 kA, with frequency to ±0.01 Hz.
A Rogowski coil normally needs an integrator between it and the meter: another box to buy, power and wire. The ZEM takes the coil directly, on the same terminals as a split-core CT.
Readings travel over Zigbee, so nothing has to be run back to a panel or a gateway, and there is no serial bus to address, terminate or commission. Mount it, clip the CTs on, reference the voltage, and it reports.
IP67 and double-insulated, so it can go inside or outside an electrical panel, indoors or out, from −30 °C to 60 °C. Standard supplies: 110–480 V AC line to line, 3-wire or 4-wire, 50 or 60 Hz, rated CAT III at 480 V.
Turn each feed on or off individually to suit the site.
AES-128 on the mesh and TLS 1.2 upstream. No EpiSensor cloud service is required, and customer data never passes through our servers.
Zigbee, not a proprietary radio: readings reach the Gateway over a self-healing mesh, and each mains-powered device adds around 1,000 m² of floor coverage on average. One Gateway carries 250 devices.
Choose the options for your site. The summary shows the line that goes into your cart.
Not sure this is the right product for your site? Answer a few questions instead
