6
7 MΩ – at an ambient air temperature (40±2) °С, relative air humidity of 93%.
1.4 The meter must be installed and operated in accordance with the applicable rules for technical
operation of electrical installations.
1.5 Do not put foreign objects on the meter, avoid bumps.
2 METER DESCRIPTION
2.1 PURPOSE
The meter is single-phase, multifunctional, direct connection, and is designed to measure active and reactive
electrical energy in single-phase AC circuits.
The meter has the following functions:
multi-tariff electricity metering (with three tariffing levels - event-based, external and time-based tariffing);
maintenance of the retrospective (recording the current values of energy storage devices: at the end of the
billing period (month), at the end of the day, at the end of the year and upon occurrence of a specific
event);
maintaining a load profile, with the ability to customize the type of the parameters stored and the averaging
time;
measuring network parameters: voltage frequency, current in the phase and neutral wires, voltage, angle
between current and voltage, active power factor, active, reactive and total power;
measuring Unified Power Quality Index (UPQI) in accordance with class "S" of the measurement process
specifications in IEC 61000-4.30:2008: stable voltage deviation, network frequency deviation, duration and
depth of voltage dips, duration and maximum value of overvoltage, interruptions in power supply;
power quality analysis for compliance with quality standards in accordance with EN 50160:2010;
indicating the instance of violating an individual power quality indicator on the LCD (disabled by default);
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