KWH meters, or COUNTIS active energy meters:

• Digital devices known as energy meters are used to measure the amount of electrical energy used in single- and three-phase systems, either directly through a connection or through a current transformer (CT).

kWH meters in three phases:

Features:

• LCD display with backlighting.
• Output of pulse: 100 Wh.
• Accuracy of measurement: 1%.
• Identification of connectivity issues.
• Protection against phase/neutral inversion.
• Supply voltage range: 230 to 400 VAC.
• Class 1 (IEC/EN 62053-21) and class B (EN 50470) represent active energy.
• Bidirectional (production and consumption of energy) E27, E33, and E45 exclusively.