User's Manual
Table Of Contents
- Before You Begin
- CCU/Repeater Basics
- Planning a CCU/Repeater Installation
- Installing the Collector or Repeater
- Installation Overview
- Attaching the Local GPS/WAN Antennas
- Attaching the Direct Mount Standard (5.15 dBi) 900 MHz Antenna
- Attaching the Collector or Repeater
- Connecting Cables
- Installing a Local 4G WAN Antenna
- Installing the Battery
- Providing Power
- CCU Installation Wiring Diagram
- Tower Installation
- Solar Powered Installation
- Relocating a CCU or Repeater
- Battery Care and Maintenance
- Detailed Collector or Repeater Specifications
- Port and Protocol Requirements
- Status and Diagnostics
- Changing the Repeater Password
- Antenna Line Sweeps Procedure
- Anritsu Site Master Calibration
- Testing on a Network Device with a Remotely-Mounted 900 MHz Antenna
- Understanding Party Responsibilities
- Itron ChoiceConnect Antenna and Line Sweep Test Form
- Itron ChoiceConnect 900 MHz Antenna Specifications
- Typical Coaxial Cable Specification Summary Table
- Sample Sweeps Output
- Grounding Specifications
- Understanding Grounding and Bonding
- Understanding the Ohms Level
- Reducing the Ohms level
- Using a Megger
- Adjusting the Routing of the Grounding Conductor
- Supplier General Requirements and Equipment Competencies
- Exterior Grounding System Design for Concentrators
- Equipment Buried Ground Ring
- Chemical Ground Rod Installation
- Itron Concentrator Equipment
- Installing Coax Ground Kits
- Collector Sites with Indoor Itron TCU / CCU Equipment
- Grounding Rooftop Network Devices
- Down Conductor Installation
- Cold Water Pipe Option
- Building Steel Option
- Antenna and Coax Grounding - Rooftops
- Cable Tray Grounding
- Water Tower Grounding
- New Wooden and Concrete Antenna Poles
- Equipment Shelter Grounding
- Repeaters on Communication Tower Sites
- Repeaters on Rooftops
- Multiple Story Site Ground System
- Down Conductors Installation - Building / Shelter Penetrations
- Down Conductors Installation - Limits of Bend Radius
- Down Conductors Installation Connection Methods
- Cable Entrance Facilities
- Clamp-On Ground Resistance Testing
- Understanding Party Responsibilities
- Understanding Grounding and Bonding
- Index
Sample Sweeps Output
TDC-0971-011 CCU 100 and Repeater 100 Installation Guide 117
Proprietary and Confidential
5. The shields of all low voltage shielded control cable, where the cable is connected to
a device outside the building and to a controller inside the building, must be grounded
at the device outside the building.
6. Install a TVSS for all cables (including copper and low voltage shielded control
cables) entering the building.
7. Ground the TVSS to the MGB if it is within a short distance.
8. If the TVSS is a distance from the MGB, bond it to earth (for example, building steel
or dedicated ground rod).
Note Any conductor in a continuous grounded metal conduit does not require a
TVSS be installed.
Clamp-On Ground Resistance Testing
A clamp-on ground resistance tester measures ground rod and small ground grid
resistance without the use of auxiliary ground rods. Clamp-on ground resistance testers
are used in multi- grounded systems without disconnecting the ground under test and with
electrical service connected.
To use a clamp-on ground resistance tester
1. Clamp the tester around the ground conductor and read the resistance-to-ground
directly from a digital display.
This type of measurement permits the quality of the grounding connections and
bonding to be verified.
2. Use certified Ground Resistance Testers for all clamp-on ground resistance
measurements.
Principle of Operation
In a typical grounded system, the neutral is bonded to ground at the service panel. There
are numerous neutral-to-ground bonds prior to this point, all in parallel. These bonds
create an effective earth resistance from the utility of virtually zero. A clamp-on ground
resistance tester uses this fact along with the connection between the utility service and
the grounding system under test. The clamp-on tester injects a known voltage into the
system and measures the current felt on the return path. Realizing the near "zero"
resistance on the service side, the meter reading indicates the resistance of the grounding
system under test.