GE Intellix BMT 330 Installation Manual page 28

WARNING: The rated maximum working voltage that may be present on
each phase is 5 V AC rms and the rated maximum current that may be
present is 200 mA. The measurement category is CAT III for circuits that can
be connected to any coaxial cable connection.
The interconnecting coaxial cables between the grounding switches and the main board
are installed in the factory as shown in Figure 5-29. The order of the board inputs is from
left to right as follows:
▪
Three Secondary Bushing Adaptor inputs: phases S1, S2 and S3.
▪
Three Primary Bushing Adaptor inputs: phases P1, P2 and P3.
▪
Neutrals N1, N2 and N3.
For each input the coaxial central wire is connected to the core (CO) on the left and the
shield (SH) on the right as shown in Figure 5-29.
Figure 5-29: PCB phase inputs - Secondary (left), Primary (middle) & Neutral CT (right)
For connection of the Bushing Adaptors as well as the HFCT(s) to the grounding switch
terminals, see Appendix C.5 and C.6.
MA-017 – BMT 330 Installation Manual – Rev 3.3 4-Mar-22 Page 28 of 69