Alpha LPE Enclosure User Manual
LPE Enclosure
Installation and Operation Manual
LPE Enclosure
Effective: 05/2010
member of The Group
™
Alpha Technologies
Power
®
LPE Enclosure
Installation and Operation Manual
031-302-B0-001, Rev. A
Effective Date: May 2010
Copyright© 2010
Alpha Technologies, Inc.
member of The Group
NOTE:
Alpha denies responsibility for any damage or injury involving its enclosures, power supplies, generators,
batteries or other hardware, manufactured by Alpha or members of the Alpha Group, when used for an
unintended purpose, installed or operated in an unapproved manner, or improperly maintained.
NOTE:
Photographs and drawings contained in this manual are only for illustrative purposes. These photographs and
drawings my not exactly match your installation.
NOTE:
Review the written and illustrative information contained in this manual before proceeding. If there are
questions regarding the safe installation or operation of this product, please contact Alpha Technologies or
your nearest Alpha representative.
™
Contacting Alpha Technologies: www.alpha.com
For general product information and customer service (7 AM to 5 PM, Pacic Time), call
031-302-B0-001 Rev A
or
1-800-863-3930
For complete technical support, call
1-800-863-3364
7 AM to 5 PM, Pacic Time or 24/7 emergency support
3
Table of Contents
Safety Notes .......................................................................................................................... 5
1.0 Introduction ................................................................................................................. 9
1.1 LPE Enclosures ............................................................................................... 9
1.2 LPE Specications and Options..................................................................... 10
2.0 Installation..................................................................................................................11
2.1 Enclosure Installation, Wall-mount ..................................................................11
2.2 Enclosure Installation, Steel or Concrete Pole............................................... 12
2.3 Enclosure Installation, Ground-mount............................................................ 13
2.3.1 Pre-installation .................................................................................... 13
2.3.2 Enclosure Grounding: Ground-mount ................................................ 15
2.3.3 Ground-mount Installation ................................................................... 16
2.4 Dimensions .................................................................................................... 18
2.5 Connecting Utility Power ................................................................................ 19
2.5.1 Service Power ..................................................................................... 20
2.5.2 Connecting Coaxial Cable................................................................... 22
2.6 Battery Installation ......................................................................................... 25
2.6.1 Battery Terminal Connections ............................................................. 27
2.7 Power Supply Installation............................................................................... 28
3.0 LPE Enclosure Maintenance .................................................................................... 29
List of Figures
Fig. 1-1, LPE Enclosure.................................................................................................................................... 9
Fig. 2-1, Mounting Bracket ..............................................................................................................................11
Fig. 2-2, Ground-mount Positioning and Safety ............................................................................................. 14
Fig. 2-3, Suggested Grounding Method ......................................................................................................... 15
Fig. 2-4, LPE Enclosure Pedestal................................................................................................................... 17
Fig. 2-5, Location of (3) Knockouts for Enclosure-to-Pedestal Mounting ....................................................... 17
Fig. 2-6, 120Vac Service Entrance Wiring ...................................................................................................... 20
Fig. 2-7, 520-R Receptacle Wiring ................................................................................................................. 21
Fig. 2-8, SPI and SPI RF Mounting Locations ................................................................................................ 24
Fig. 2-9, Battery Identication Label ............................................................................................................... 25
Fig. 2-10, Hardware stack-up, Threaded Battery insert .................................................................................... 27
Fig. 2-11, Hardware stack-up, Threaded Battery Insert with optional in-line fuse ............................................ 27
4
031-302-B0-001 Rev A
Safety Notes
Review the drawings and illustrations contained in this manual before proceeding. If there are any questions
regarding the safe installation or operation of the system, contact Alpha Technologies or the nearest Alpha
representative. Save this document for future reference.
To reduce the risk of injury or death, and to ensure the continued safe operation of this product, the following
symbols have been placed throughout this manual. Where these symbols appear, use extra care and
attention.
ATTENTION
The use of ATTENTION indicates specic regulatory/code requirements that may affect the placement of
equipment and /or installation procedures.
NOTE:
A NOTE provides additional information to help complete a specic task or procedure.
CAUTION!
The use of CAUTION indicates safety information intended to PREVENT DAMAGE to material or
equipment.
WARNING!
WARNING presents safety information to PREVENT INJURY OR DEATH to the technician
or user.
031-302-B0-001 Rev A
5
Battery Maintenance Guidelines
The battery maintenance instructions listed below are for reference only. Battery manufacturer’s instructions
for transportation, installation, storage or maintenance take precedence over these instructions.
• To prevent damage, inspect batteries every 3 months for:
Signs of battery cracking, leaking or swelling. The battery should be replaced immediately by
authorized personnel using a battery of the identical type and rating.
Signs of battery cable damage. Battery cable should be replaced immediately by Authorized Personnel
using replacement parts specied by vendor.
Loose battery connection hardware. Refer to battery manufacturer’s documentation for the correct
torque and connection hardware for the application.
• Apply battery manufacturer’s specied antioxidant compound on all exposed connections.
• Verify battery terminals and/or exposed connection hardware is not within 2 inches of a conductive
surface. Reposition batteries as necessary to maintain adequate clearance.
• Clean up any electrolyte (battery emission) in accordance with all federal, state, and local regulations or
codes.
• Proper venting of the enclosure is recommended. Follow the Battery Manufacturer’s approved
transportation and storage instructions.
• Always replace batteries with those of an identical type and rating. Never install old or untested batteries.
• Do not charge batteries in a sealed container. Each individual battery should have at least 0.5
inches of space between it and all surrounding surfaces to allow for convection cooling.
• All battery compartments must have adequate ventilation to prevent an accumulation of potentially
dangerous gas.
Recycling and Disposal Instructions
Spent or damaged batteries are considered environmentally unsafe. Always recycle used batteries or dispose
of the batteries in accordance with all federal, state and local regulations.
Electrical Safety
• Lethal voltages are present within the power supply and electrical boxes. Never assume that an electrical
connection or conductor is not energized. Check the circuit with a volt meter with respect to the grounded
portion of the enclosure (both AC and DC) prior to any installation or removal procedure.
• Always use the buddy system when working under hazardous conditions.
• A licensed electrician is required to install permanently wired equipment.
• Input voltages can range up to 120 Vac. Ensure that utility power is disabled before beginning installation
or removal.
• Ensure no liquids or wet clothes contact internal components.
• Hazardous electrically live parts inside this unit are energized from batteries even when the AC input
power is disconnected.
Mechanical Safety
• Keep hands and tools clear of fans. Fans are thermostatically controlled and will turn on automatically.
• Power supplies can reach extreme temperatures under load.
• Use caution around sheet metal components and sharp edges.
6
031-302-B0-001 Rev A
Battery Safety Notes
WARNING!
Lead-acid batteries contain dangerous voltages, currents and corrosive material. Battery
installation, maintenance, service and replacement must be performed only by authorized
personnel.
Chemical Hazards
Any gelled or liquid emissions from a valve-regulated lead-acid (VRLA) battery contain dilute sulfuric
acid, which is harmful to the skin and eyes. Emissions are electrolytic, and are electrically conductive and
corrosive.
To avoid injury:
• Servicing and connection of batteries shall be performed by, or under the direct supervision of, personnel
knowledgeable of batteries and the required safety precautions.
• Always wear eye protection, rubber gloves, and a protective vest when working near batteries. Remove
all metallic objects from hands and neck.
• Batteries produce explosive gases. Keep all open ames and sparks away from batteries.
• Use tools with insulated handles, do not rest any tools on top of batteries.
• Batteries contain or emit chemicals known to the State of California to cause cancer and birth defects
or other reproductive harm. Battery post terminals and related accessories contain lead and lead
compounds. Wash hands after handling (California Proposition 65).
• Wear protective clothing (insulated gloves, eye protection, etc.) whenever installing, maintaining,
servicing, or replacing batteries.
• If any battery emission contacts the skin, wash immediately and thoroughly with water. Follow your
company’s approved chemical exposure procedures.
• Neutralize any spilled battery emission with the special solution contained in an approved spill kit or with
a solution of one pound Bicarbonate of soda to one gallon of water. Report chemical spill using your
company’s spill reporting structure and seek medical attention if necessary.
• All battery compartments must have adequate ventilation to prevent an accumulation of potentially
dangerous gas.
• Prior to handling the batteries, touch a grounded metal object to dissipate any static charge that may have
developed on your body.
• Never use uninsulated tools or other conductive materials when installing, maintaining, servicing or
replacing batteries.
• Use special caution when connecting or adjusting battery cabling. An improperly connected battery cable
or an unconnected battery cable can make contact with an unintended surface that can result in arcing,
re, or possible explosion.
031-302-B0-001 Rev A
7
Grounding Connection Notes
In order to provide a ready, reliable source of backup power, it is necessary to connect the power supply to an
effective grounding and Earthing system that not only provides for the safety of the service personnel responsible
for its operation and maintenance, but also facilitates the proper operation and protection of the equipment within
the network. Such a grounding system provides protection with respect to operator safety, system communication,
and equipment protection.
Safety Ground
The safety ground is a two-part system, comprised of the utility service and the Alpha system.
1. First, utility service;
As a minimum requirement for the protection of Alpha equipment, the local utility service must provide a lowimpedance path for fault current return to earth. This must meet or exceed the requirements of the US National
Electrical Code. The connection between the Alpha Power Supply and the utility must also meet or exceed the
requirements of the US National Electrical Code.
2. Second, the Alpha grounding system;
The Alpha grounding system consists of a low-impedance connection between the enclosure and an Earth Ground
(located at least 6' away from the Utility Earth connection).
This impedance between the enclosure and Earth must be 25 Ohms or less at 60 Hertz.
Local soil conditions will determine the complexity of the grounding system required to meet the 25 Ohm
(maximum) resistance specied above.
For example, a single 8' ground rod may be sufcient to meet the requirement. In some cases, a more elaborate
system may be required such as multiple ground rods connected by a #6AWG solid copper cable buried 8-12"
below the surface. Where this is not possible, contact a local grounding system expert for alternate methods that
will meet the 25 Ohm (maximum) specication.
NOTE:
All ground rod connections must be made by means of a listed grounding clamp suitable for direct burial or
exothermically welded.
Strike (Lightning) Ground
Lightning strikes, grid switching, or other aberrations on the power line and/or communications cables have the
potential to cause high-energy transients which can damage the powering or communications systems. Without
a low-impedance path to the ground, the current, when traveling through wires of varying impedance, produce
damaging high voltage. The most viable method available to protect the system from damage is to divert these
unwanted high-energy transients along a low-impedance path to ground. A low-impedance path to ground
prevents these currents from reaching high voltage levels and posing a threat to equipment. The single-point
grounding system provides a low-impedance path to ground, and the key to its success is the proper bonding of the
grounding rods, so the components of the grounding system appear as a single point of uniform impedance. Alpha
recommends the use of a surge arresting device electrically bonded to the Alpha Ground System.
WARNING!
Low-impedance grounding is mandatory for personnel safety and critical for the proper
operation of the cable system.
8
031-302-B0-001 Rev A
1.0 Introduction
1.1 LPE Enclosures
The LPE Enclosures may be equipped with an optional AC service entrance, AC distribution
and are supported with a wide range of accessories, including the AlphaCellTM GXL batteries
and HPL-FT front terminal batteries providing extended standby runtime and life.
The LPE is specically designed for indoor or outdoor installations requiring lower power, a
smaller footprint and embedded DOCSIS® status monitoring capability. The LPE is available
in pole, wall or ground mount congurations. The LPE is an ideal solution for back-up power
where traditional equipment is too large and bulky.
031-302-B0-001 Rev A
Fig. 1-1, LPE Enclosure
9
1.0 Introduction, continued
1.2 LPESpecicationsandOptions
Specications
Mechanical Option Part Number Description
Dimensions Batter y Harness: 875- 838 -20
746-152-20
H x W x D (in): 26 X 16.25 X 12 Batter y Heater Mat 746-130-20 Used in cold-climate applications
(mm) 660 X 413 X 305 Battery Retaining Bar (BRB) 605-948-A1 Secures batteries within enclosure
Weight (lb/ kg): 25 / 11.3 Coax Connection: 020- 019-3 5 SPI, 20A (1-2)
021-080-21 SPI RF, 20A (1)
12V Batter y Cable Kit (BCK)
12V Batter y Cable Kit - 2 Batteries
(BCK-2)
SPI, 20A (1-2)
Material: Exter ior powdercoated
aluminum
Battery: 220 GXL or two 70 HPL-FT Lightning Arrester 020- 098-24
Door and Lid Seal: Poron gasketing Service Entrance: 74 4- 656 -20 70A available
Color: Gray, white, and seafoam
green
Lid: Removable Surge Protection: 162-027-10
Door: Hinged, removable
Door Loc ks: 744-229-20 Provisions optional GEM
162-046 -10
745 -9 46-20
Status Indicators: 740-139-25 Local/Remote Indicator (LRI)
162-028-10
162-029 -10
LA- P+ 120V
LA -P-120 T
Surge Arrester Kit
75 Ω Coax, MF
75 Ω Coax, FF, w/Gnd
75 Ω Coax, FF
10
031-302-B0-001 Rev A
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