The EM21-72D. AV5.3. X.0. XX from Carlo Gavazzi is a Type EM21 72D energy management energy meter. This three phase energy meter available with removable front LCD display of 7DGT readout. General purpose three phase energy meter is suitable for both active and reactive energy metering for cost allocation but also for main electrical parameter measurement and retransmission (transducer function).
Self power supply of 18VAC to 260VAC (48Hz-62Hz), across input "VL1" and "N"
Cat. III (IEC60664, EN60664) installation category
Dielectric strength of 4000Vrms/1minute
Protection degree IP50(front) and IP20 (screw terminals)
Noryl PA66 material, UL94 V-0 self extinguishing
CE, cULus approved
400g of weight
TRMS measurements of distorted sine waves (voltages/currents)
LCD type with alphanumeric indications to display all measured variables