Mercury 201.8 TLO

Mercury 201.8 TLO Mercury 201.8 TLO Mercury 201.8 TLO Mercury 201.8 TLO Mercury 201.8 TLO Mercury 201.8 TLO
Product code: 201.8 TLO


The meters are designed for multi-tariff measurement of active and reactive electric energy and power, as well as measurement of electrical parameters in two-wire AC networks with subsequent accumulated data storage, generation of events and transmission of information to the AMR/AMI system’s data collection centers.

The meters are designed for indoor operation and can be installed in the areas with additional environmental protection (installed inside premises, inside cabinets or boards).


The meter modifications are available with different rated and peak current, and additional functionalities which are not related to metrological perfomance.

Metrological performance

Meter accuracy class (active/reactive) 1 / 2
Rated voltage, V 230
Base/peak current, A 5 / 80
Peak current during 10 ms 30*I max
Starting current, А 0.02


GOST R 52320-2005, GOST R 52322-2005.

Active/total power consumption in meter voltage circuit at rated voltage, W/V*A 2 / 10
Total power consumed by each current circuit, max, V*А 0.1
Additional active/total power consumption in meter voltage circuit at rated voltage if PLC interface is available, W/V*А 2 / 12
Number of tariffs 4
Data retention during power outage, min, years 10
Calibration interval, years 16
Warranty period, years 3
Mean time between failures, min, h 220,000
Operating temperatures, °С -40 to +75
Weigh, not exceeding kg 0.5
Dimensions (LхWхH), mm 128x90x65

— The meter measures, stores, displaying on LCD and communicate information via different interfaces of active and reactive electrical energy independently by every tariff zone and cumulatively for all tariff zones for the following periods of time:

  • total cumulative active and reactive energy;
  • active energy at the beginning of the current day and 180 previous days;
  • energy at the beginning of the current month and 48 (active) and 12 (reactive) previous months.

— TOU with the option of setting individual schedule for every day of the week based on 4 tariffs, 16 time zones per day. Individual tariffs schedule is set every month.

— Measurement of electrical network parameters:

  • instantaneous values of active, reactive and total power;
  • RMS of phase currents and voltages;
  • power frequency;
  • power factor.

— Power profile with a 30-minute integration period and a 6-month storage period.

— Recording of current, voltage, active and reactive power peaks.

— Event logging.

— Built-in 80A relay.

— Nonvolatile electronic seal.

— Recording of unauthorized impacts to the indelible event log.

— LCD indication of data without main power.

— No magnet sensitive elements in measuring circuits and power supply system.

— Small-size housing with DIN-rail mounting.

Meter modification code structure:

Mercury 201.8 T L O

T – tariffs (TOU) , electronic seals,
L – PLC-II modem,
О – built-in load control relay.


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