GE iBox Installation And Maintenance Manual page 29

GE Grid Solutions
Installation Guidelines
Power Fusing Always replace fuses with the same type and rating used by GE Digital Energy. The
fuse types and ratings are stated in "Fuse Replacement" on page 59.
Always fuse-protect field power sources.
Grounding To ensure safe operations, you must connect the iBox Protective Earth Terminal to a
and Shielding low impedance ground using braided cable or heavy solid copper conductor. When
making ground connections, ensure all grounding surfaces are free of dirt, residue
and corrosion.
Ensure cable shields are grounded at either the iBox functional ground terminal or at
the field equipment. Do not ground the shields at more than one point because a
potential difference may exist between grounds, resulting in ground loops and
undesirable noise sources.
To prevent electromagnetic interference from upsetting iBox operation, use cables
with an over-all cable shield. Route all communication cables away from power-
carrying cables.
Communi- Verify the integrity of all communication cable connections prior to start-up to avoid
cations Ports damaging the iBox.
and
Serial ports are protected with surge and noise suppression components.
Connections
Always shield communication cables and make them as short as possible.
GE Information
, continued
994-0047-5.10-4
iBox/iBox Kit
Installation and Maintenance Guide
29