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1.5 Insulation resistance between the meter case and electrical circuits, at least:
20 MΩ — under conditions of item 2.5;
7 MΩ – at an ambient air temperature (40±2) °С, relative air humidity of 93%.
1.6 The meter must be installed and operated in accordance with the applicable rules for technical operation of
electrical installations.
1.7 Do not put foreign objects on the meter, avoid strikes.
2 METER DESCRIPTION
2.1 Meter application
The meter is three-phase, of transformer or direct connection (depending on modification) device, it is designed
to measure active and reactive electrical energy in three-phase four-wire AC circuits.
The meter has the following functions:
• multi-tariff electricity metering (with three tariffing levels - event-based, external and time-based tariffing);
• event logs (fixation of current values of energy storage: at the end of the billing periods (day, month, year)
and when certain event tiggers);
• load profile storage, with the ability to customize the type of stored parameters and averaging time;
• network parameters measurement: voltage frequency, phase currents, phase voltages, phase to phase (line)
voltages (with non-specified accuracy), angles between current and voltage per phases; power factor per phase
and of three-phase, active, reactive, apparent power per phase and in total;
• Unified Power Quality Index measurement (UPQI) in accordance with class "S" of the measurement process
specifications in IEC 61000-4-30:2008: steady-state voltage deviation, frequency deviation, voltage fall duration
and depth, overvoltage duration, the maximum overvoltage, power supply interruption;
• power quality analysis for compliance with quality standards in accordance with EN50160:2010;
• indication of the individual power quality index violation on the LCD (disabled by default);
• recording the violation of an individual power quality (event logs available for reading on the interface);
• active power consumption monitoring;
