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Schieflastregelung
Die Schieflast (Leistungsunsymmetrie) zwischen den Phasen L1, L2 und L3 darf maximal 4,6 kVA betragen. Einphasige Erzeugungsanlagen
dürfen nur dann angeschlossen werden, wenn die Summe aller einphasig angeschlossenen Erzeugungseinheiten 4,6 kVA je Außenleiter
(und Netzanschluss) nicht übersteigt.
Somit können maximal 3 x 4,6 kVA = 13,8 kVA einphasig, verteilt auf 3 Außenleiter, angeschlossen werden. Jede weitere Erzeugungsanlage
am selben Netzanschluss muss über eine dreiphasige Einspeisung verfügen.
Bereitstellung von Blindleistung
Ab einer Anlagenscheinleistung von 3,68 kVA müssen Wechselrichter die Möglichkeit besitzen, Blindleistung mit einem Verschiebungsfaktor
cosφ bis 0,95 induktiv/kapazitiv einzuspeisen. Bei einer Anlagenleistung >13,8 kVA muss ein Verschiebungsfaktor bis cosφ = 0,9 induktiv/
kapazitiv einstellbar sein. Folgende Einstellungen zur Bereitstellung von Blindleistung können von Ihrem Installateur - nach Absprache mit
dem örtlichen Netzbetreiber - vorgenommen werden (fragen Sie dazu Ihren Customer Support):
cosφ = feste Einstellung des Verschiebungsfaktors
cosφ (P) = Einstellung des Verschiebungsfaktors in Abhängigkeit von der Leistung (Kennlinie)
Q = feste Einstellung der bereitgestellten Blindleistung (Q) in VA
Q (U) = Einstellung der Blindleistung in Abhängigkeit von der Spannung (Kennlinie)
Zusätzlich kann der Verschiebungsfaktor oder die Blindleistung durch einen Rundsteuersignalempfänger ferngesteuert werden.
Unbalanced load control
The unbalanced load (power asymmetry) between the phases L1, L2 und L3 must not exceed 4.6 kVA. Single-phase generators may only
be connected if the sum of all generating units that are single-phase-connected does not exceed 4.6 kVA per phase (and per grid connec-
tion port).
Therefore a maximum of 3 x 4,6 kVA = 13,8 kVA can be single-phase-connected, distributed on three phase conductors. Each additional
generating unit on the same grid connection port must have a three-phase supply.
Reactive power supply
From a system apparent power of 3,68 kVA inverters must have the possibility to supply reactive power with a shift factor cosφ to 0.95 in-
ductive/capacitive. With a plant capacity > 13.8 kVA a shift factor cosφ to 0.9 inductive/capacitive must be possible. The following settings
for the supply of reactive power can be made by your installer after consultation with your local power grid operator (please consult your
customer support):
cosφ = Fixed setting of the shift factor
cosφ (P) = Setting the shift factor depending on power (characteristic curve)
Q = Fixed setting of the provided reactive power (Q) in VA
Q (U) = Setting the reactive power depending on voltage (characteristic curve)
In addition, the shift factor or the reactive power can be remote-controlled via a ripple control signal receiver.
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