GE iBox, Руководство по установке и обслуживанию

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GE Grid Solutions
iBox/iBox Kit
Installation and Maintenance Guide
GE Information
994-0047-5.10-4 29
Installation Guidelines
, continued
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
and Shielding
To ensure safe operations, you must connect the iBox Protective Earth Terminal to a
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-
cations Ports
and
Connections
Verify the integrity of all communication cable connections prior to start-up to avoid
damaging the iBox.
Serial ports are protected with surge and noise suppression components.
Always shield communication cables and make them as short as possible.