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Description of Unit
2
Description of Unit
2.1
General View
2.2
Purpose of Use
D000027979 en t – E350 Series 2, 3-Phase ZxF100Ax/Cx – User Manual
Fig. 1.1 General view of meter (with GSM/GPRS Module)
Restrictions for meters with firmware versions M21 to M23:
The meters may not be used in networks with significant disturbances in
the frequency range of 2 kHz to 150 kHz since the intended operating
conditions of the meters according to the harmonised standards EN50470-
1 and EN50470-3 assume no significant noise currents and voltages in this
frequency range.
Such significant disturbances occur for instance in large photovoltaic
systems (influence of the inverters with high emissions of extreme
harmonics) and can cause additional errors in the meters, even though the
meters meet all applicable standards and regulations.
Restrictions for meters with firmware versions M25:
Please follow the required test times for the meter constant or dial test,
mentioned in section 7.1.2. At switching on or off the load (between <0.5A
and >1A) regularly every 20 minutes, an additional error of about 0.1% can
occur. The deviation can be higher, if the load is switched more often. The
meter complies with all specifications. It fulfils all the valid standards and
regulations.
E350 Series 2 ZMF100 meters record active and reactive energy
consumption in all 3-phase 4-wire networks. They are directly installed in
the supply line by the energy supply company and are read regularly for
billing purposes.
ZFF100 meters differ from ZMF meters in the type of measurement (Aron
circuit for three-phase three-wire networks). Therefore, they are only
equipped with 2 instead of 3 measuring elements.
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© Landis+Gyr
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