Technical Specification  of ER300P:

Accuracy Base Mtg : Class 1.0/0.5s/0.2s
Standards CBIP 88/IEC 687/IEC 1306/IS 13779
Frequency 50Hz +/- 10%
Current/Voltage Loading Meters works in balanced/unbalanced conditions & at all Power factors
Operating Temperature 0 deg to 50 deg (under operation).
-5 deg to 60 deg (storage)
Display 8 Character alpha-numeric (Backlit LCD)
Display Parameters RMS Voltages, currents, PF, frequency, kW, kVA, kVAr, kWH, kVAH, kVArH+, kVArH - (both Imports & Exports), MD kVA, MDkW, MD kVAr+, MD kVAr-, Rising Demand with elapsed time, High resolution energies.
Communication Through Optical port ( as per IEC 1107)
RS485 (for flush mounting versions only)
Encloser Transparent, unbreakable,polycarbonate outer cover, metallic inner cover and moulded plastic for terminal cover & base.
Weight less than 4 kg (whole current)
less than 2.5 kg (CT operated)
Dimensions 320 x 175 x 110 mm
Mounting Flush / Projection type Mounting.