V2.01
25359_EDEBD
A0279-2320-1_EN
16
Installation and electrical connection of the system
5
Installation and Electrical Connection of the System
5.1
General, very important information
Tighten all screws and connections. Failure to do so will void the warranty.
Install and operate the device in accordance with the applicable VDE regulations (in
particular VDE 0100) and the electricity supplier's regulations.
Connection cross-sections and fuse protection table: see attachment
5.2
Current transformer connection and measuring voltage
If possible, mount the transformer in the phase that corresponds to L1 of the compensa-
tion system (determine by means of voltage measurement). All capacitor and consumer
currents must be determined. In case of unbalanced phase load (small systems), install
the transformer in the phase with the highest load.
P1 (K) to energy supply (indicated on the transformer).
P2 (L) to load outputs
S1 (k) with terminal k (controller terminal 20) and
Connect S2 (l) to terminal l (controller terminal 21) in the compensation system
(use a two-color cable!).
Wire cross section: up to 3 m = 1.5 mm², up to 6 m = 2.5 mm². For longer distances, we
recommend using a 1 A transformer. The controller is designed for connection to 5 A and
1 A transformers; switching is done by firmware.
If you use existing transformers, the current paths must always be connected in series.
The secondary transformer current needs to be at least 15 mA. For lower currents, no
capacitors are connected ("No measuring current" is displayed).
Connect the measuring voltage in accordance with the connection diagram.
5.3
Current transformer dimensions
The current transformer is designed on the basis of the current consumption of the
consumers, not the capacitor current. If other measuring devices are connected to a
transformer in addition to the reactive power controller, the transformer power needs to
be dimensioned accordingly. Losses also occur in the current transformer cable that need
to be considered if there are long distances between the transformer and the controller.
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