SPM33 Power Meter

Phase and line voltages, phase and neutral currents, active, reactive and apparent power, power factor, frequency, and imported and exported energy.

It also measures voltage and current unbalance and harmonics up to the 31st with THD, and keeps demand and maximum records.

Voltage, current, power factor and active power to 0.5%, reactive power and active energy to 1.0%, and reactive energy to 2.0%.

It measures true RMS with a 1-second refresh.

Yes. Using its two status inputs, it records kWh from the grid and from the genset separately.

3-phase 3-wire and 4-wire systems, directly up to 400 V L-N / 650 V L-L, and up to 650 kV through voltage transformers.

It comes in 5 A and 1 A current input versions.

It runs on 85–265 VAC or 100–300 VDC and draws under 5 VA.

It is a 96 × 96 mm panel meter for an 89.5 × 89.5 mm cutout, about 500 g, rated IP54 at the front and IP20 for the case, operating from −25 °C to +55 °C.

RS485 with Modbus RTU, at 4800, 9600 or 19200 bps, and an address from 1 to 247.

As an option: two alarm relays rated 250 VAC / 5 A, ordered as the R version.