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1.4 When is Power Management & EEG Required
Please note: For countries that do not require Power Management then it is recommended that both
the Power Management and EEG settings are deactivated from the front LCD panel.
1.4.1 Power Management
Power management is required when the PV plant requires one or more of the following modes of
operation:
Ripple Control Mode – this allows the Distributed Network Operator (DNO) to control the
power produced by the PV Plant, via a remote radio ripple control receiver, in defined limits of
PV plant output e.g. 0 %, 30 %, 60 %, 100 % of inverter rating;
Cos(phi) Fixed Mode – the PV plant will regulate the reactive power according to a fixed
Cos(phi) (Power Factor) value;
Cos(phi) Variable Mode – the PV plant will regulate the reactive power according to a defined
characteristic which is a function of P/Pn;
Q Fixed Mode – the PV plant will regulate the reactive power according to a fixed reactive value
which is a percentage of the instantaneous AC power generated by the PV plant;
Q Variable Mode - The PV plant will regulate the reactive power of according to a defined
characteristic curve which is a function of U/Un;
Active Power Limitation – The PV plant will limit the active power based on either the rated
inverter AC output, rated DC array power or an export limit.
The modes of operation must be set on the webserver page of either a ComBox, ZeverCom or
ZeverManager, please refer to the ZeverCom or ZeverManager instruction guide.
1.4.1.1 Where is Power Management Required?
Countries include - Germany, Cyprus, Austria. Typically for all other countries, such as the Netherlands
and the UK, please ensure that the Power Management setting is DEACTIVATED, however when in
doubt it is necessary to consult with the relevant DNO in the region to determine what modes of
operation are required.
1.4.2 EEG – 70 %
This setting is required only in Germany as the German Renewable Energy Act (EEG 2012) stipulates
that PV plants up to 30 kWp must operate via the Ripple Control Mode or by limiting the active power
feed-in at the grid connection point to 70 % of the installed PV power (kWp). The latter of these
methods can be achieved by simply activating the EEG setting from the front screen of the inverter
which automatically reduces the inverter AC output to 70 % of its maximum AC rating. For all other
countries please ensure that the EEG setting is DEACTIVATED.
