It is recommended to mark the cables and CTs with the supplied tie markers.
HACS stickers I1 through I36 correspond to the BFM136 current inputs with matching labels. Cable
stickers 1 through 12 correspond to the BFM136 current terminal blocks with matching labels.
Use the table from Appendix B to annotate your input assignments and wiring connections.
Labeling example:
Assume you want to connect three HACSs to the device terminal block 3 so these three HACSs would be
connected to the device inputs I7, I8, and I9 respectively:
1. Take a HACS connection cable, attach a tie wrap marker to each side of the cable and mark them
as 3 to indicate that it should be connected to the device terminal block 3.
2. Put the HACS label stickers I7, I8, and I9 directly on HACSs to indicate that these HACSs will be
associated with the device current terminals I7, I8, and I9.
Safety requirements
To ensure safety requirements the BFM136 must be grounded - the protective ground terminal should be
connected to protective earth with a copper conductor or strap with minimal length (less than 1 m desirable)
and cross-section 5.3 mm2 (AWG10) at least.
The properly marked external 3-pole disconnect device with circuit-breaker and a fuse 6A, 600V in every
pole should be installed between voltage measurement terminals and power lines, located as close as
possible (less than 2 m recommended) to the BFM136, as shown in figure 2-5 .
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