Transcript
ClearGain® Ground Mounted Amplifier System Outdoor Enclosure Installation Instructions
ADCP-75-242 • Issue 1 • 01/2008 Content
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INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 CERTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 STANDARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1
PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
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SYSTEM INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1.1 PDU Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1.2 GMA Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1.3 GMA and PDU Chassis Ground Connection . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2
Enclosure Ground Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2.1 Installing GMA Coaxial Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2.2 Installation of PDU Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
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GMA ENCLOSURE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
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PRODUCT INFORMATION AND TECHNICALASSISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . 8
INTRODUCTION This document describes the ADC ClearGain Ground Mounted Amplifier Outdoor Enclosure and provides complete instructions for installing this product outside.
Revision History ISSUE
DATE
1
01/2008
REASON FOR CHANGE Original.
Trademark Information ADC and ClearGain are registered trademarks of ADC Telecommunications, Inc.
Admonishments Important safety admonishments are used throughout this manual to warn of possible hazards to persons or equipment. An admonishment identifies a possible hazard and then explains what may happen if the hazard is not avoided. The admonishments — in the form of Dangers, Warnings, and Cautions — must be followed at all times. These warnings are flagged by use of the triangular alert icon
1426608 Rev A
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(seen below), and are listed in descending order of severity of injury or damage and likelihood of occurrence.
Danger: Danger is used to indicate the presence of a hazard that will cause severe personal injury, death, or substantial property damage if the hazard is not avoided. Warning: Warning is used to indicate the presence of a hazard that can cause severe personal injury, death, or substantial property damage if the hazard is not avoided. Caution: Caution is used to indicate the presence of a hazard that will or can cause minor personal injury or property damage if the hazard is not avoided.
General Safety Precautions Warning: Never install the Power Distribution Unit in a wet location or during a lightning storm. When installing or modifying communication lines, disconnect lines at the interface before working with uninsulated lines or terminals to prevent electrical shock. Warning: Wet conditions increase the potential for receiving an electrical shock when installing or using electrically-powered equipment. To prevent electrical shock, never install or use electrical equipment in a wet location or during a lightning storm. Disconnect lines at the distribution panel before working with uninsulated wires or terminals to prevent electrical shock.
CERTIFICATION ADC’s ClearGain Ground Mounted Amplifier Outdoor Enclosure has been designed to meet NEMA 4 requirements (IEC certification IP66).
STANDARDS UL 508A File Number E619967: Type 4 cUL CSA 22,2, No. 94, File Number E61997: Type 4 NEMA/EEMAC: Type 4 IEC 60529, IP66
1 PRODUCT OVERVIEW The ClearGain Ground Mounted Amplifier system is composed of a combination of two functional components: the ClearGain Power Distribution Unit (PDU) and up to three Ground Mounted Amplifiers (GMA). One PDU may support up to three GMAs. The ClearGain system Outdoor Enclosure also includes an enclosure and mounting kit.
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2 SYSTEM INSTALLATION Installation consists of three main steps: 1. Installing the enclosure: mechanical attachment. 2. Installing the GMA: mechanical attachment, coaxial cables, ground cable. 3. Installing the PDU: mechanical attachment, operation power, and alarms.
2.1 Preparation Enclosure rack angles are 12 rack units in height this allows up to three GMA’s to be installed with the supporting PDU. Equipment may be installed in any rack location within the enclosure. For easy access to the PDU and less cable congestion ADC recommends that the PDU be installed below the GMA’s. It is also advisable to start with the PDU near the bottom of the enclosure. Each ClearGain GMA includes a cable management bracket, and hardware for proper installation in a 19-inch rack. Each ClearGain GMA Enclosure includes an adjustable wall/pole mounting kit, a grounding kit, and hardware for proper GMA Module installation. GMA Enclosure Installation Considerations: • Determine where the enclosure is to be mounted. Enclosure can be either wall or pole mounted. • If wall or pole mounting, install the uni-strut brackets on the back of the enclosure per the instructions included with the wall/pole mounting kit and install enclosure in your desired orientation. • Determine cable entry (right and left entry, left entry only, right entry only) • Install the rack angles (provided) in the middle mounting holes. • Ensure proper grounding of the enclosure
2.1.1 PDU Installation Warning: Never install the Power Distribution Unit in a wet location or during a lightning storm. When installing or modifying communication lines, disconnect lines at the interface before working with uninsulated lines or terminals to prevent electrical shock. The mounting bracket, shown in Figure 1, is used to mount the PDU in the 19–inch rack angles. 1. Obtain the following tools and equipment: • Flat blade or Phillips screwdriver (type to match mounting screws) • #12-24 x 0.50-inch machine screws. (Four required.) • #10-32 x 0.50-inch machine screws. (Four required.) 2. Locate the equipment rack mounting space that is specified for the PDU. 3. Place the PDU in the desired mounting space and align the holes in the mounting brackets with the holes in the rack angles.
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4. Secure PDU mounting bracket to rack angles using the 10-32 x 0.50-inch machine screws provided with enclosure. Torque these screws to approximately 27 pound-inches (3.1 Newton meters). 5. Secure PDU to mounting bracket using four machine screws provided with PDU. MOUNTING BRACKET
PDU 18223-A
Figure 1. PDU Rack Mount Bracket 19-inch
2.1.2 GMA Installation Warning: Wet conditions increase the potential for receiving an electrical shock when installing or using electrically-powered equipment. To prevent electrical shock, never install or use electrical equipment in a wet location or during a lightning storm. Disconnect lines at the distribution panel before working with uninsulated wires or terminals to prevent electrical shock. 1. Obtain the following tools and equipment: • Flat blade or Phillips screwdriver (type to match mounting screws) • #10-32 x 0.50-inch machine screws. (Four required per chassis.) 2. Locate the equipment rack mounting space that is specified for the GMA. 3. Place the GMA in the desired mounting space and align the holes in the mounting brackets with the holes in the rack angles. 4. Secure GMA mounting brackets to rack angles using the 10-32 x 0.50-inch machine screws provided with enclosure. Torque these screws to approximately 27 pound-inches (3.1 Newton meters). 5. Repeat this procedure for the remaining GMAs.
2.1.3 GMA and PDU Chassis Ground Connection Good grounding of the ClearGain GMA is important to protect the unit against voltage surges. These surges could be caused by, for example, lightning. A ground lug is provided on the front of the chassis for connecting the ground wire to the chassis. Connect the grounding wire to the GMA chassis and route to the ground stud at the front of the enclosure.
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1. Locate the chassis ground lug at the front of the GMA as shown in Figure 2. 2. Attach the ring end of the ground wire to the chassis ground lug using M8 screw and washer (see Figure 2).
22328-A
Figure 2. GMA Chassis Ground Stud 3. Route the free end of the chassis grounding wire to ground stud at the front of enclosure. 4. Connect the ground cable under the grounding screw on the PDU front panel. Connect the other end of the cable to the site ground location. 5. Cut ground wires to length and terminate with a #10 ring terminal. 6. Install ground wire between ground stud and enclosure door ground stud.
2.2 Enclosure Ground Connection The following tools are required to complete these procedures: • Wire cutters • Wire stripper • Multimeter
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The following materials are required to complete the procedures in this section: • #6 AWG (4.0 mm) insulated stranded copper wire (for chassis grounding wire) • #10 ring terminal (1) for #6 wire (for chassis ground wire connection) • #10 ring terminals (2 – 6) for #6 wire (for OSP cable ground wire connection) A stud is provided for connecting a grounding wire to the enclosure. Use the following procedure to connect the grounding wire to the enclosure. Route the grounding wire out of the enclosure to an approved earth ground source. Note: Ensure cable entry system frame and compression gasket is installed before routing the ground cable through the opening in the side of the enclosure.
1. Obtain a length of #6 AWG (4.0 mm) insulated stranded copper wire for use as an enclosure grounding wire. 2. Terminate one end of the wire with a ring terminal. 3. Locate the enclosure ground stud. This stud is located inside the enclosure at the front near the bottom close to the door opening. 4. Attach the ring end of the wire to the enclosure ground stud. Secure ground wires to stud with hardware provided. 5. Route the free end of the enclosure grounding wire through one of the openings on the side of enclosure to an approved (per local code or practice) earth ground source.
Caution: Do not attempt to replace a layer of the cable seal block, if you accidently remove an extra layer. Once a layer of the seal is removed, if it is reinserted in the seal moisture may enter the enclosure. Remove the seal and start with a new seal block. 6. Cut the enclosure grounding wire to length and connect it to the approved ground source as required by local code or practice. Note: Be sure to maintain reliable grounding. Pay particular attention to ground source connections.
Check for continuity between ground stud and earth ground. The ground resistance from ground stud to nearest qualified ground must be less than 0.05 Ohms.
2.2.1 Installing GMA Coaxial Cables Caution: Before connecting any coaxial cables, ensure that the BTS transmitter output is turned off and that precautions are taken to ensure that the transmitter cannot be activated during the equipment installation. Short coaxial jumpers should be pre-made. One will connect the BTS port to the radio and the other will connect the ANT port to the hardline. Most installations require two good quality flexible coax jumpers, normally terminated with 7/16DIN–7/16DIN plug connectors. Check gender of hardline and check if Antenna pigtail is present, adjust accordingly for a correct match. Note: Ensure cable entry system frame and compression gasket is installed before routing the cables through the openings in the sides of the enclosure.
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Caution: Do not attempt to replace a layer of the cable seal block, if you accidently remove an extra layer. Once a layer of the seal is removed, if it is reinserted in the seal moisture may enter the enclosure. Remove the seal and start with a new seal block. 1. Route coaxial cables through openings in the sides of enclosure. Insert cables through the openings most appropriate (right or left side) to the location of the BTS equipment and the feedline cable. 2. Terminate cables at the GMA Modules.
2.2.2 Installation of PDU Cables Note: Ensure cable entry system frame and compression gasket is installed before routing the cables through the openings in the sides of the enclosure.
There are three PDU cables: the ground cable, the alarm cable, and the power cable. Figure 3 shows the cable terminations on the front of the PDU. Connect the cables as follows: 1. Route alarm cables through openings in the sides of enclosure. Insert cables through the openings most appropriate (right or left side) to the location of the BTS equipment or the site alarm. 2. Connect the alarm cable leads to the base station or site alarm system. Use either “Normally Open” or “Normally Closed” contacts. 3. Connect the other end of the alarm cable to the PDU “ALARM” connector.
Figure 3. Cable Terminations on Front of PDU (Left to Right: Power Cable, Alarm Cable, Three MHU Cables, Ground Cable)
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4. Route power cables through openings in the sides of enclosure. Insert cables through the openings most appropriate (right or left side) to the location of the power source. 5. Connect the power cable to the site DC power connector. (The power cable has three leads. Red is positive, Black is negative, and Yellow/Green is for ground.) 6. Connect the power cable to the “INPUT” connector on the PDU front panel. 7. Connect up to three mini-coaxial cables to both PWR ports on the GMA. 8. Connect the other end of the mini-coaxial cables to the MHU ports on the PDU. 9. Route mini-coaxial cables through cable management brackets to reduce cable clutter. 10. Repeat Step 7 through Step 9 for up to three GMAs. Following the instructions supplied with the kits, seal cables and cable thru-holes in the enclosure with supplied cable entry system kits.
Caution: Do not attempt to replace a layer of the cable seal block, if you accidently remove an extra layer. Once a layer of the seal is removed, if it is reinserted in the seal moisture may enter the enclosure. Remove the seal and start with a new seal block.
3 GMA ENCLOSURE SPECIFICATIONS The putty white enclosure measures 24 x 24 x 24 inches (610 x 610 x 610 mm) and has provisions for 12 rack units.
4 PRODUCT INFORMATION AND TECHNICALASSISTANCE
[email protected] [email protected] [email protected] [email protected] Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits and ADC further disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of liability applies to all products, publications and services during and after the warranty period.
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