ATTENTION!
The installation of the BLR-CX must be performed by technically qualified persons only, since
improper use can cause an electric shock.
The appropriate safety regulations in the country of installation must be strictly adhered to.
Equipment with damaged casing or terminals must not be used and must be disconnected
from the mains supply immediately.
1 INSTALLATION AND CONNECTION
1) Check that the mains voltage and CT current input are suitable for the relay!
2) Disconnect panel from mains voltage, and check that the voltage is off
3) Ensure CT short-circuited or not in operation.
An open circuit CT produces a high voltage, which endangers people and equipment. It will
also damage the CT and affect ist accuracy.
4) Disconnect and remove any previous pfc-relay.
5) Mount BLR-CX in the control panel with the two mounting clips. (cutout 138x138mm)
6) Connect the earth protection cable to ‘PE’ on BLR-CX metal case.
7) Connect BLR-CX according to wiring diagram.(CT/P1 towards incoming feeder, CT/P2
towards load!)
8) Remove short-circuit from CT
9) Connect mains voltage to panel.
10) If relay has been correctly connected and the mains voltage and CT output comply with
the ratings and settings of BLR-CX, the LCD will show AUTO and the control function will
start automatically!
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