Rev. 1.00
22586_EDEBD
A0253-0318-1_EN
17
KBR multicomp F144-3 6DO/6RO
Installation and electrical connection
4.2
Current transformer connection and measuring voltage
If possible, mount the transformer in the phase that corresponds to L1 of the
compensation system (determine by means of voltage measurement). All ca-
pacitor and consumer currents must be determined. In case of an unbalanced
phase load (in small companies), install the transformer in the phase with the
highest load.
P1 (K) to energy supply (indicated on the transformer).
P2 (L) to load outputs
Connect S1 (k) with terminal k (controller terminal 20) and
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 dis-
tances, we recommend using a 1 A transformer. The controller is designed for
connection to 5 A and 1 A transformers; switching is done by fi rmware.
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.
4.3
Current transformer dimensions
The current transformer is designed on the basis of the current consumption of
the consumers, not the capacitor current. If, in addition to the reactive power
controller, other measuring devices are connected to the same transformer, the
transformer power needs to be chosen accordingly. If the transformer and the
controller are far apart, losses also occur in the current transformer cable, which
need to be taken into consideration.
4.4
Standard connection diagrams
NOTE
The stage outputs 1 to 6 are optocoupler outputs.
External voltage supply Terminal input 40 max. 30 VDC
(rated voltage 24 VDC), max. 35 mA.
