Communications Connections; Cabinet Connections - GE Intellix BMT 330 Installation Manual

Communications Connections

The chosen communication line must be routed to the product cabinet. The RS-485
Modbus must be connected directly to the DIN rail. Alternatively, if fibre optic or
armoured Ethernet cable is used, it must be connected to the optional communications
module as shown in Figure 5-23. This module supports Ethernet Modbus, DNP 3.0 and
IEC 61850 protocols. Fibre optic communication is recommended if the control room is
located outside the substation.
Figure 5-23: Fibre optic module

Cabinet Connections

ALL cables entering the cabinet should have at least 150 mm (6 in.) of
excess length to allow for cable strain relief.
WARNING: Do not open the cabinet during rain or snowstorms during the
installation process.
Earth
First connect the protective earth conductor to the earth protective conductor terminal,
which is adjacent to the fuse holder on the DIN rail.
Fuse
Holders
Earth
Figure 5-24: Earth adjacent to the fuse holders
MA-017 – BMT 330 Installation Manual – Rev 3.3
Relays
Comms.
4-Mar-22 Page 25 of 69