Itron Inc. CCU100A Manual Do Utilizador
TDC-0971-011 CCU 100 and Repeater 100 Installation Guide
103
Proprietary and Confidential
Itron Concentrator Equipment
Connect Itron concentrator equipment ground leads to the equipment cabinets as dictated
by the cabinet manufacturer. Unless specified otherwise by manufacturer, ground leads
are No. 2 AWG BTCW.
by the cabinet manufacturer. Unless specified otherwise by manufacturer, ground leads
are No. 2 AWG BTCW.
In most cases, connect the other end of the ground leads to the equipment ground bar
(EGB) or MGB if each equipment cabinet has separate, external attachment points for
ground lugs. If the Itron concentrator equipment cabinets collectively have only one or
two ground attachments, the BTCW ground leads may be exothermically welded directly
to the BGR.
(EGB) or MGB if each equipment cabinet has separate, external attachment points for
ground lugs. If the Itron concentrator equipment cabinets collectively have only one or
two ground attachments, the BTCW ground leads may be exothermically welded directly
to the BGR.
TCU / CCU on a Concrete Pad
Use a concrete pad to hold the EGB flat. Several inches above the surface of the pad,
securely bolt the TCU or CCU with stand-off (cherry) insulators to prevent movement. In
this configuration, the ground bar is typically used only for Itron TCU / CCU equipment
grounding.
securely bolt the TCU or CCU with stand-off (cherry) insulators to prevent movement. In
this configuration, the ground bar is typically used only for Itron TCU / CCU equipment
grounding.
TCU / CCU on a Steel Frame or I-Beam or Platform
If the Itron TCU / CCU equipment is mounted on a steel frame or I-beam, bond the steel
to the BGR at opposite ends with two No. 2 AWG BTCW and exothermically welded at
each end. Secure the BTCW ground leads to minimize the possibility of creating a trip
hazard.
to the BGR at opposite ends with two No. 2 AWG BTCW and exothermically welded at
each end. Secure the BTCW ground leads to minimize the possibility of creating a trip
hazard.
Ensure that all ground paths to the BGR are installed so that any potential discharge of
electricity is downward or flat. The MGB needs to be properly located to ensure that this
is possible.
electricity is downward or flat. The MGB needs to be properly located to ensure that this
is possible.
Warning Do not allow ground paths to go upward. Make all connections to
ground bars in accordance with this document.
ground bars in accordance with this document.
TCU / CCU on a Raised Metal Platforms
The following procedure outlines how to ground a CCU that is installed on a raised metal
platform.
platform.
To ground TCU and CCU on a raised metal platform
1. Bond raised metal platforms used to support the Itron TCU / CCU equipment at raw
land or collocation sites to the BGR at two locations with No. 2 AWG BTCW
exothermically welded to opposite sides of the platform.
exothermically welded to opposite sides of the platform.
For rooftop sites, the platform ground leads are connected to the MGB.
2. If the raised metal platform contains removal grating, install metal clips on removable
sections to insure the metal platform is electrically continuous.
3. Securely mount the MGB below the platform using stand-off (cherry) insulators to
electrically isolate the bar from the steel platform.