EMH metering DIZ, Инструкция по эксплуатации

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b) Arities of the energy registers:
The register resolution can be modified via the display control or
the data interface. Possible values:
y
Direct metering meters:
• 8.0 (default value), 7.1, 6.2, 5.3
y
Transformer connected meters:
• Secondary meters: 8.0, 7.1, 6.2, 5.3 (default value), 4.4
• Primary meters: 8.0, 7.1, 6.2, 5.3, 4.4
According to the Measuring Instruments Directive MID,
the registers must not overrun in case of operation for
4,000 hours at maximum power.
If register resolutions are chosen that do not ensure this,
the meter must not be used for billing!
Example:
Meter with 3 x 230/400 V, direct metering 80 A
P
Max
= 3 x U
Ref
x I
Max
= 3 x 230 V x 80 A
= 55.2 kW
► Registered energy after 4000 h = 220,800 kWh
► There must be at least 6 digits before the decimal point.
For this reason, the register resolutions must be chosen in line with
the following restrictions:
y
Direct metering meters:
• 8.0 (default value), 7.1, 6.2
y
Transformer connected meters:
• Secondary meters: 6.2, 5.3 (default value)
• Primary meters: The available arity and the unit result from
the transformer factors set for voltage (VT) and current (CT).