10 11
Name of characteristic Item Note
Meter weight, not more than, kg 0,5
Average time before failure, h 220000
Average service life, years 30
Unauthorized access protection password
2.5 Meter design and operation
2.5.1 Power metering principle is based on transformation of current and voltage input signals into digital signals
and their digital multiplication with signal transformation into pulse recurrence frequency that is proportional to
input power. These pulses summation by microcontroller gives consumed active power. Microcontroller performs
connection between all scheme parts.
2.5.2 Meter design complies with the requirements of IEC 62052-11:2003 and the manufacturer design
documentation. Meter is made in the plastic case.
The meter case generally consists of the top and bottom parts, fitting on perimeter, the transparent window
and removable terminals cover. On the meter front panel are located: LCD display; LED indicator of active energy
metering; optical port elements; «FRAME» button.
2.5.3 Terminals for meter connection to the network, interface lines, pulse outputs are closed by the plastic
cover. Meter external view, image of the terminal plate and numbering of terminal is shown in the Figure 2.2.
Overall and mounting dimensions are given in ANNEX A.
Table 2.1
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