Alpha AlphaCell HP User Manual

AlphaCell HP

Users Guide

AlphaCell HP Battery

Effective: July 2011

Alpha Technologies

Power

®

AlphaCell

TM

HP Battery Users Guide

Storage, Maintenance and Deployment

745-680-C5-001, Rev. A

Effective Date: July, 2011

Copyright © 2011

Alpha Technologies, Inc.

NOTE:

Photographs contained in this manual are for illustrative purposes only. These photographs may not match your
installation.

NOTE:

Operator is cautioned to review the drawings and illustrations contained in this manual before proceeding. If there
are questions regarding the safe operation of this powering system, please contact Alpha Technologies or your
nearest Alpha representative.

NOTE:

Alpha shall not be held liable for any damage or injury involving its enclosures, power supplies, generators,
batteries or other hardware if used or operated in any manner or subject to any condition not consistent with its
intended purpose or is installed or operated in an unapproved manner or improperly maintained.

Contacting Alpha Technologies: www.alpha.com

or

For general USA sales information and customer service (7 AM to 5 PM, Pacic Time), call

1 800 863 3930

For complete technical support in the USA, call

7 AM to 5 PM, Pacic Time or 24/7 emergency support

1 800 863 3364

For Sales information and Technical Support in Canada, call

1 800 667 8743

745-680-C5-002, Rev. A

3

Table of Contents

Safety Notes ....................................................................................................................................................... 6

Battery Maintenance Guidelines......................................................................................................................... 7

Recycling and Disposal Instructions ................................................................................................................... 7

Important Storage Practices ............................................................................................................................... 8

Electrical Safety .................................................................................................................................................. 8

Chemical and Mechanical Safety ....................................................................................................................... 9

1.0 Introduction .......................................................................................................................................... 10

1.1 Description ...............................................................................................................................11

1.2 Operating Conditions .............................................................................................................. 12

1.3 Capacity .................................................................................................................................. 12

1.3.1 Ratings ......................................................................................................................... 13

2.0 Preparing for Maintenance .................................................................................................................. 14

2.1 Required Tools and Equipment .............................................................................................. 14

3.0 Periodic Maintenance Tasks and Schedule ......................................................................................... 15

3.1 Monthly Remote Status Monitoring ........................................................................................ 15

3.2 Quarterly Preventive Maintenance ......................................................................................... 16

TM

3.3 AlphaCell

3.4 Battery Evaluation Procedures ............................................................................................... 20

3.5 Battery Refurbishment Plan .................................................................................................... 21

4.0 Battery System Float Charging ............................................................................................................ 22

4.1 Alpha Power Supply Charging Prole .................................................................................... 23

5.0 Troubleshooting ................................................................................................................................... 24

6.0 Battery Parameters by Model Number ................................................................................................ 27

7.0 Warranty and Return Information ........................................................................................................ 28

7.1 AlphaCell

7.2 Battery Maintenance Report for Return Authorizations .......................................................... 30

Battery Maintenance Log .................................................................................... 18

TM

Limited Warranty.................................................................................................. 28

4

745-680-C5-002, Rev. A

Figures and Tables

Fig. 1, Capacity vs Storage Time ........................................................................................................... 8

Fig. 2, Series Connected String of Batteries ........................................................................................11

Fig. 3, Parallel String of Batteries .........................................................................................................11

Fig. 4, Available Capacity vs. Ambient Temperature ........................................................................... 12

Fig. 5, Flow Chart, Monthly Status Monitoring ..................................................................................... 15

Fig. 6, Flow Chart, Quarterly Preventive Maintenance ........................................................................ 16

Fig. 7 Flow Chart for Battery Refurbishment Plan ............................................................................... 21

Fig. 8, Charger Modes ......................................................................................................................... 23

Table 1, Conductance values, new vs. suspect batteries .................................................................... 20

Table 2, Troubleshooting ..................................................................................................................... 24

Table 3, Battery Parameters, Current Models ..................................................................................... 27

Table 4, Warranty Periods for AlphaCellTM batteries ............................................................................ 28

745-680-C5-002, Rev. A

5

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 specic regulatory/code requirements that may affect the placement of

equipment and installation procedures.

NOTE:

A NOTE provides additional information to help complete a specic task or procedure.

CAUTION!

The use of CAUTION indicates safety information intended to PREVENT DAMAGE to material or
equipment.

WARNING!

A WARNING presents safety information to PREVENT INJURY OR DEATH to the
technician or user.

6

745-680-C5-002, Rev. A

WARNING!

Lead-acid batteries contain dangerous voltages, currents, and corrosive material. Battery
installation, maintenance, service, and replacement must only be performed by authorized
personnel.

Battery Maintenance Guidelines

• For optimal performance, inspect batteries every 6 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 (match conductance, voltages,
and date codes as specied in this document).

Signs of battery cable damage. Battery cable should be replaced immediately by authorized
personnel using replacement parts specied by vendor.

Loose battery connection hardware. Refer to documentation for the correct torque and connection
hardware for the application.

• Do not attempt to remove the vents (valves) from the AlphaCell HP battery or add water. This is a safety

hazard and voids the warranty.

• Apply NO-OX grease on all exposed connections.

• When necessary, clean up any spilled electrolyte in accordance with all federal, state, and local

regulations or codes.

• Follow approved storage instructions.

• Always replace batteries with those of an identical type and rating. Never install untested batteries.

• Do not charge batteries in a sealed container. Each individual battery should have at least 1/2 inch 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. Never place batteries in a sealed enclosure. Extreme caution should be used when
maintaining and collecting data on the battery system.

Recycling and Disposal Instructions

• Spent or damaged batteries are considered environmentally unsafe as they contain lead and dilute

sulfuric acid. They should not be "thrown away" with common refuse.

• Always recycle used batteries in accordance with federal, state, provincial, and local regulations. The

Alpha Group provides recycling services. Call 800 863 3930 or contact your local Alpha representative.

745-680-C5-002, Rev. A

7

Important Storage Practices

During storage please note:

• All lead acid batteries experience self-discharge while in open circuit storage. This causes circuit

voltage and capacity to decrease.

• The self-discharge rate is related to ambient temperature. The lower the temperature, the less

the discharge. Batteries should be stored in a clean, ventilated, and dry location with an ambient

temperature of 32ºF to 77ºF (0ºC to 25ºC).

• It is important to track open circuit voltage which is related to the density of the electrolyte. If

the open circuit voltage is lower than 12.6V or the batteries have been stored beyond the limits
shown in Figure 1, the batteries should be charged to avoid damage caused by self-discharge.

• All batteries should be fully charged before storage. Record the storage date and next

supplemental charge date in a maintenance record and on the battery.

• Upon battery deployment, verify all batteries within each string measure in the range of
+/- 0.3Vdc of the string average.

NOTE:

The product warranty is void if the batteries are not stored and recharged in accordance with these guidelines.

24

100%

95%

90%

85%

80%

Percent State of Charge

75%

70%

2.17

2.16

2.15

2.14

2.13

OCV Per Cell

2.12

2.11

2.1
0

3

104°F/
40°C

86°F/
30°C

6

9 12

Storage Time (Months)

77°F/
25°C

68°F/
20°C

15

18 21

Fig. 1, Capacity vs. Storage Time

Electrical Safety

• Lethal voltages are present within the power supply and electrical enclosures. Never assume that

an electrical connection or conductor is not energized. Check circuits with a volt meter prior to any
installation or removal procedure.

• Observe circuit polarities.

• Always use the buddy system when working under hazardous conditions.

• 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.

• Use an insulated blanket to cover exposed portions of the battery system when performing extended

maintenance that could result in personal or equipment contact with the energized conductors.

• Certain types of rectier circuits used in charging the battery may not include a line isolating transformer.

In these cases extreme caution should be used when maintaining and collecting data on the battery
system.

8

745-680-C5-002, Rev. A

WARNING!

Chemical Hazards

Any liquid emissions from a valve-regulated lead-acid (VRLA) battery contains 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. To avoid
battery contact, remove all metallic objects, (such as rings or watches), from your person.

• 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).

• 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 (454g) bicarbonate of soda to one gallon (3.8l) of water. Report a chemical spill

using your company’s spill reporting structure and seek medical attention if necessary.

• Always replace batteries with those of an identical type and rating (match conductance, voltages, and
date codes as specied in this document).

• Never install old or untested batteries.

• Prior to handling the batteries, touch a grounded metal object to dissipate any static charge that may have

developed on your body.

• Use special caution when connecting or adjusting battery cabling. An improperly or unconnected battery
cable can make contact with an unintended surface that can result in arcing, re, or a possible explosion.

• A battery showing signs of cracking, leaking, or swelling should be replaced immediately by authorized

personnel using a battery of identical type and rating.

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, especially sharp edges.

• Depending on the model, batteries can weigh anywhere from 25 to 100 pounds (11kg to 45kg). Exercise

care when handling and moving batteries. Use proper handling equipment.

745-680-C5-002, Rev. A

9

1.0 Introduction

The purpose of this guide is to provide the user with the necessary information to maintain batteries in storage
and deploy batteries in Alpha Powering systems, as well as perform battery testing, install replacements and
recycling.

This manual guides you through periodic maintenance checks and troubleshooting of the AlphaCell HP Thin
Plate Pure Lead AGM battery.

Adherence to the procedures and practices detailed in this guide will not only insure the battery operates per

specications, but also provides the proper backup for the Alpha Powering system in which it is installed.

To achieve these goals, this guide will address the following topics:

• The storage and maintenance of new battery inventory.

• Deployment of AlphaCell HP batteries into Alpha Power systems.

• Proper preventiative maintenance practices for AlphaCell HP batteries.

• Replacement and recycling of AlphaCell HP batteries.

• Warehousing, testing, and redeployment of reuseable AlphaCell HP batteries.

• How to keep proper maintenance records for troubleshooting and/or Warranty claims.

10

745-680-C5-002, Rev. A

1.1 Description

The AlphaCell HP battery is a lead acid battery that facilitates an oxygen recombination cycle.

A 12V battery is made up of six 2V cells internally connected to provide 12 volts.

The battery system is a group of 12V batteries connected in a series string to provide a
higher voltage system. In Fig. 2, three of the nominal 12V batteries are connected in series to
provide an 18 cell system with a nominal voltage of 36V.

to power supply: red (+), black (-)

inline fuse

3A 1A2A

Fig. 2, Series String of Batteries

(For illustration purposes, a 36Volt string is shown. 48Volt strings are also available)

You can connect multiple strings of batteries in parallel. This provides a system whose
capacity equals the sum capacity of all the strings. For example, in Fig. 3, two 36V 90Ah
capacity strings are connected in parallel to provide a nominal 36V at 180Ah.

WARNING!

Alpha highly recommends fusing in single and parallel string congurations.

power supply: red (+), black (-)

to

3A

1A2A

745-680-C5-002, Rev. A

inline fuse

inline

fuse

2B3B

1B

[Front]

Fig. 3, Parallel String of Batteries

upper tray

lower

tray

11

1.0 Introduction, continued

1.2 Operating Conditions

AlphaCell HP batteries, which are valve regulated and virtually sealed, do not give off
perceptible amounts of gas under normal operating conditions.

• Acceptable ambient operating temperature: -40ºF to 131ºF (-40ºC to 55ºC)

• Ideal ambient operating temperature: 68ºF to 77ºF (20ºC to 25ºC)

• Ambient humidity: ≤ 95%

1.3 Capacity

The actual capacity is related to the utilization ratio of the active positive and negative

materials within the battery. The utilization ratio is inuenced by the depth of discharge, the

structure of the battery, and the manufacturing technology. During normal usage, the factors

that inuence the actual capacity are discharge rate, depth of discharge, end voltage, and

temperature.

• The higher the discharge rate, the lower the available capacity.

• As batteries get colder, the available capacity is reduced. This is related to the kinetics of
the electrochemical reactions and the resistivity of the electrolyte (See Fig. 4).

NOTE:

Although the battery can be operated at temperatures below -4ºF (-20ºC), the capacity and ability to
discharge will be dramatically decreased. Similarly, temperatures approaching 122ºF (50ºC) will increase

electrolyte loss and corrosion of the plates, resulting in a shorter battery life.

Eciency VS. Temperature
AlphaCell 3.5HP and 4.0HP

100%

90%

80%

70%

60%

50%

40%

30%

20%

Percent Rated Capacity Available

10%

0%

-40°F/

-40°C

-22°F/

-30°C

-4°F/

-20°C

14°F/

-10°C

32F/
0°C

50°F/
10°C

68°F/
20°C

4.0HP

3.5HP

Typical Gel

86°F/
30°C

104°F/
40°C

12

Fig. 4, Available Capacity vs. Ambient Temperature

745-680-C5-002, Rev. A

1.0 Introduction, continued

1.3 Capacity, continued

1.3.1 Ratings

3.5 HP Ratings

Amps

End Voltage 15min 30min 45min 1hr 2hr 3hr 4hr 5hr 8hr 10hr 20hr

1.85 162.6 106.4 80.5 65.3 38 27.1 21.2 17.4 11.4 9.3 4.9

1.80 174.7 112.1 84.2 67.9 39.2 27.9 21.8 17.9 11.8 9.6 5.1

1.75 185.6 117.2 87.3 70.2 40.3 28.6 22.3 18.4 12.1 9.9 5.2

1.70 194.9 121.3 89.9 72 41.1 29.2 22.7 18.7 12.3 10 5.3

Power (Watts)

End Voltage 15min 30min 45min 1hr 2hr 3hr 4hr 5hr 8hr 10hr 20hr

1.85 312.2 206 156.9 127.9 75.4 54.2 42.5 35.1 23.1 18.9 9.9

1.80 331 215.4 163.1 132.4 77.5 55.5 43.5 35.9 23.7 19.4 10.2

1.75 347.6 223.6 168.3 136.2 79.2 56.7 44.4 36.6 24.2 19.8 10.5

1.70 361.7 230.3 172.6 139.2 80.6 57.5 45 37.1 24.5 20.1 10.7

A/H Capacity

End Voltage 15min 30min 45min 1hr 2hr 3hr 4hr 5hr 8hr 10hr 20hr

1.85 40.7 53.2 60.4 65.3 75.9 81.3 84.7 87.1 91.5 93.4 98.6

1.80 43.7 56.1 63.1 67.9 78.5 83.8 87.2 89.7 94.3 96.2 101.7

1.75 46.4 58.6 65.5 70.2 80.6 85.9 89.3 91.8 96.5 98.6 104.4

1.70 48.7 60.7 67.4 72 82.2 87.5 91 93.5 98.3 100.4 106.6

4.0 HP Ratings

Amps

End Voltage 15min 30min 45min 1hr 2hr 3hr 4hr 5hr 8hr 10hr 20hr

1.85 198.7 128.3 95.9 77 43.7 30.8 24 19.4 12.5 10.1 5.4

1.80 212.8 134.6 99.7 79.7 44.9 31.6 24.5 19.8 12.8 10.4 5.6

1.75 225.2 139.9 102.9 81.9 45.9 32.2 25 20.2 13.1 10.6 5.7

1.70 235.7 144.3 105.5 83.7 46.7 32.8 25.4 20.5 13.3 10.8 5.8

Power (Watts)

End Voltage 15min 30min 45min 1hr 2hr 3hr 4hr 5hr 8hr 10hr 20hr

1.85 383.9 251.6 189.4 152.7 87.5 61.9 48.2 39 25.3 20.5 11

1.80 406.8 261.8 195.7 157.2 89.6 63.3 49.3 39.9 25.9 21 11.3

1.75 426.7 270.5 200.9 160.9 91.3 64.5 50.1 40.6 26.4 21.3 11.5

1.70 443.1 277.4 205.1 163.8 92.6 65.4 50.8 41.2 26.7 21.6 11.6

A/H Capacity

End Voltage 15min 30min 45min 1hr 2hr 3hr 4hr 5hr 8hr 10hr 20hr

1.85 49.7 64.2 72 77 87.5 92.5 95.8 96.9 100.3 101.3 108.8

1.80 53.2 67.3 74.8 79.7 89.8 94.8 98.1 99.2 102.7 103.8 111.7

1.75 56.3 70 77.2 81.9 91.8 96.7 100 101.1 104.7 105.9 114

1.70 58.9 72.1 79.1 83.7 93.3 98.2 101.5 102.6 106.3 107.5 115.8

745-680-C5-002, Rev. A

13

2.0 Preparing for Maintenance

The battery system should be remotely monitored monthly and physically inspected quarterly. If the
battery system has an automatic monitoring system to gather the electrical and environmental data,
the monthly checks should consist of evaluating the recorded data and visiting any site that does not

meet the specications listed in the detailed procedures below. At a minimum each site needs to be

physically inspected every three months.

You do not have to measure the electrolyte specic gravity or add water to the cells.

All batteries in the string should be numbered to facilitate recording and analysis of data unique to
each unit.

Notify anyone affected by the intended maintenance or troubleshooting activity. This should include
but not be limited to anyone responsible for the status monitoring equipment at the head-end or NOC.

2.1 Required Tools and Equipment

Prior to beginning maintenance, ensure that all required tools and equipment, including safety

equipment, is available and functional.

The following is a list of the minimum equipment required to maintain and troubleshoot the

AlphaCell HP battery:

• Digital voltmeter

• Socket wrenches, insulated

• Box end wrenches, insulated

• Torque wrench calibrated in inch/lbs

• Rubber gloves

• Full face shield

• Safety Glasses

• Plastic apron

• Portable eyewash

• Spill kit, including sodium bicarbonate solution

• Fire extinguisher

• Optional equipment, depending on the type of maintenance being performed,

includes:

• True RMS Volt Meter with DC Amp Clamp

• Midtronics Conductance Meter

• 100 amp momentary load test set

• System load bank (DC if to be performed at the battery and AC if to be performed

by loading a power supply output— contact your Alpha Sales Representative for

purchasing information).

• NO-OX Corrosion Inhibitor

• Paper Towels and/or rags

14

745-680-C5-002, Rev. A

3.0 Periodic Maintenance Tasks and Schedule

The following tasks are to be performed on a monthly and quarterly schedule.

The following maintenance procedure requires a fully functional status monitoring system capable of
remotely measuring and recording the following data on a periodic basis:

• Battery Temperature

• Individual Battery Voltage

• Total Battery String Voltage

Please note: If status monitoring is not available these checks need to be made during the quarterly
onsite visit and any batteries not meeting the minimum requirement must be addressed at such time.

3.1 Monthly Remote Status Monitoring

Review Status

Monitoring Data

Battery Voltage

>0.5V Above/Below

String Average

Yes

No No

RTS

Temperature >10°C

above Ambient

Yes

Perform

Quarterly PM

Monitor as per PM

Program

Fig. 5, Flow Chart for Monthly Remote Status Monitoring

Procedure

1. If any individual battery voltage varies more than 0.5V above or below the average for the

string then a site visit is required.

Example V1 = 13V, V2 = 13V, V3=14V

Average voltage = 13.3V

If V3 greater than average by 0.5V, then a site visit is required

2. If the RTS temperature is greater than 10 degrees C above the current regional ambient

temperature then a site visit is required.

3. Prioritize site visits based on highest RTS temperatures and battery voltages

4. Visit the site within 30 days and remedy the problem by replacing the bad battery or

batteries and reset quarterly maintenance.

745-680-C5-002, Rev. A

15

3.2 Quarterly Preventive Maintenance

Yes

No

Yes

Yes

No

Replace the individual failed battery with

a battery that is within +/- .3 Volts of the string average.

Battery String

Float Current

>0.5A

Log each battery’s

conductance and

voltage

Disconnect

Batteries

Record Information

on Site Visit Record

Monitor as per PM

Program

Site Visit

Battery

Refurbishment

Plan

Return battery to

warehouse

Remote Status

Monitoring
Procedure

Ensure Power

Supply is in Float

Mode

Battery

> 0.5V

from the average

string voltage

No

Does the individual battery pass

the Evaluation Procedure #1

outlined in Section 3.4?

(see page 18)

Replace the string

Required Equipment

• True RMS Volt Meter with DC Amp Clamp

• Midtronics Conductance Battery Tester

16

Fig. 6, Flow Chart for Quarterly Preventive Maintenance

745-680-C5-002, Rev. A

3.2 Quarterly Preventive Maintenance, continued

Procedure

1. Verify the power supply is in Float mode.

2. Use the DC Amp clamp to measure and record each individual battery string’s oat current.

3. If the individual string oat current is greater than 0.5 amps, replace the battery string. Measure

and record the individual battery conductance and voltage on the Site Visit Record.

4. If the string oat current is less than 0.5 amps,

4.1 Disconnect the batteries from the system

4.2 Measure the battery conductance. If any reading is below the suspect level, refer to Table 1,
page 20, for mhos values for battery models.

4.3 Measure the battery voltage. If any reading is less than 12.6V then replace all those batteries
in the string.

4.4 If any individual battery voltage varies more than 0.5V above or below the average for the
string then replace the string.

Example: V1 = 13V, V2 = 13V, V3=14V

Average voltage = 13.3V

If V3 is greater than average by 0.5V, then the batteries should be replaced.
Batteries removed from the site should then be tested per Section 3.5,
"Battery Refurbishment Plan".

4.5 Log the site location, battery location, model, manufacturer date codes, voltage and

conductance readings for all batteries.

5. Record data on Battery Maintenance log.

6. Verify the spacing between the batteries from front to back is at least 1/2" or 13mm, and adjacent

batteries do not touch one another.

7. Ensure the enclosure is clean and free of debris.

8. Measure and record the top center battery's temperature. This is typically the warmest battery in
the string.

9. Visually inspect the batteries for:

Cleanliness

Terminal damage or evidence of heating or overheating

Container or cover damage

10. Check terminal posts for signs of corrosion. If corrosion is present, neutralize with a solution of

1 lb (454g) sodium bicarbonate (baking soda) to 1 gallon (3.8l) of water. Rinse and dry.

11. Verify terminal posts are coated with NO-OX grease or a spray-on protectant. Reapply as
needed.

12. Retorque all the interunit connecting hardware to the values noted in Table 3 on page 27.

745-680-C5-002, Rev. A

17

3.3 AlphaCell HP Battery Maintenance Log

Node / Location

Power Supply Type

Load (kW)

Follow this sample when lling out the maintenance log (following page).

Evaluation Procedure #1Evaluation Procedure #2Evaluation Procedure

Vdc

Conductance

Float

No

Battery

String

A 1 4.0 HP 4/11 3/11 .2 70° 13.4 2100

A 2 4.0 HP 4/11 3/11 .2 70° 13.5 2087

A 3 4.0 HP 4/11 3/11 .2 70° 13.4 2100

B 1 4.0 HP 4/11 3/11 .1 70° 13.4 2087

B 2 4.0 HP 4/11 3/11 .1 70° 13.4 2100

B 3 4.0 HP 4/11 3/11 .1 70° 13.6 2087

A 1 4.0 HP 4/11 3/11 7/8 .1 85° 13.3 2100

A 2 4.0 HP 3/11 7/8 .1 85° 13.3 2087

A 3 4.0 HP 3/11 7/8 .1 85° 13.4 2100

B 1 4.0 HP 3/11 7/8 .1 85° 13.2. 2087

B 2 4.0 HP 3/11 7/8 .1 85° 13.2 2100

B 3 4.0 HP 3/11 7/8 .1 85° 13.2 2087

Initial Install Date

Battery Type

Mfr. Date Code

PM Date

Float Current

Battery Temp

Load

mhos @

77°F

Vdc 24

Hour
OCV

Conductance

mhos @

77°F/25°C

Vdc @

100A after

10 seconds

#3

Vdc 24

Hour
OCV

18

745-680-C5-002, Rev. A

3.3 AlphaCell™ HP Battery Maintenance Log

Node / Location

Power Supply Type

Load (kW)

String

Battery

Initial Install Date

Battery Type

Mfr. Date Code

PM Date

Float Current

Battery Temp

Evaluation Proce-

dure #1

Vdc

Conductance

Float

No

Load

mhos @

77°F

Evaluation Procedure #2Evaluation Procedure

Vdc 24

Conductance
Hour
OCV

mhos @

77°F/25°C

Vdc @

100A after

10 seconds

#3

Vdc

24
Hour
OCV

745-680-C5-002, Rev. A

19

3.4 Battery Evaluation procedures for AlphaCell™ HP

To help identify batteries approaching end of life in an operating power system, test #1 should be performed at each
maintenance interval. For batteries not installed in an operating power system, test #2 or #3 may be performed. For
accuracy, tests must be performed on fully charged batteries.

A battery failing any of the following combined tests is dened as a faulty battery. The battery will be replaced under the
terms of the warranty if within the dened warranty period.

Evaluation Procedure 1

Conductance/Impedance Test – Measure the conductance of each battery. Any battery that possesses a conductance

that is 50% less than the initial reading taken at the point of install can be considered suspect of being below 70%

capacity and should be evaluated further. The battery temperature must be approximately the same each time this reading

is taken (see Table 1 below). Use temperature compensation feature when using Midtronics meter.

AND

Float Voltage Test – Measure the oat voltage of each battery in the string that is on oat charge. Any battery in the string

measured at 13.2 volts or less is a suspect battery and should be further evaluated with the steps below. Any battery

below 12.6 volts should be replaced. The 13.2 & 12.6 voltage values are based on a 77˚F (25˚C) temperature. Adjust the

voltage for higher or lower temperatures by 0.0168 Volts per battery per degree Fahrenheit. The higher the temperature

above 77˚ F (25˚C) the lower the voltage will have to be adjusted and vice-versa for temperature below 77˚F (25˚C). (i.e.:
at a temp of 89˚F (32˚C) would have a corresponding oat voltage of 13.0 volts).

Evaluation Procedure 2

Conductance/Impedance Test – Measure the conductance of each battery. Any battery that possesses a conductance

that is 50% less than the initial reading taken at the point of install can be considered suspect of being below 70%

capacity and should be evaluated further. The battery temperature must be approximately the same each time this reading
is taken. Consult table 1 below for guidance. Use temperature compensation feature when using Midtronics meter.

AND

24 Hour Open Circuit Test – Measure the open circuit voltage of the suspected battery 24 hours after the battery has

come off of oat charge. Care must be taken to ensure that the battery is at full state of charge when it is disconnected

from the power supply. The battery should exhibit a voltage about 12.60V. A battery below this voltage should be replaced.

A fully charged battery below 12.6 volts is below 70% capacity, but a battery above 12.6 volts is not necessarily above
70% in capacity. Batteries that have been sitting for extended periods should be recharged after 6 months or when they
reach 12.48 volts (75% capacity), which ever comes rst depending on the storage temperature.

Evaluation Procedure 3

24 Hour Open Circuit Test – Measure the open circuit voltage of the suspected battery 24 hours after the battery has

come off of oat charge. Care must be taken to ensure that the battery is at full state of charge when it is disconnected

from the power supply. The battery should exhibit a voltage about 12.60 volts. A battery below this voltage should be

replaced. A fully charged battery below 12.6 volts is below 70% capacity, but a battery above 12.6 volts is not necessarily
above 80% in capacity. Batteries that have been sitting for extended periods should be recharged after 6 months or when
they reach 12.48 volts (75% capacity), which ever comes rst depending on the storage temperature.

AND

100A Load Test – Measure the voltage of each battery at the end of a 10 second 100-amp load test. Again, the

temperature must be equivalent to that of the original test performed at the point of installation. A signicant drop in

voltage versus the previous test will indicate deterioration of the battery. A 12-volt battery that falls below 10.80 volts
should be considered faulty and should be replaced.

NOTE:

To maintain consistent test results, ensure the same Midtronics conductance tester is used for each test cycle.

20

Midtronics Conductance

Models 3200/micro CELLTRON

Approximate Conductance Values (mhos)
Healthy Battery @ 77°F (25°C)

Suspect Battery @ 77°F (25°C) in mhos <680 <840

Table 1, Conductance values, healthy vs. suspect batteries

3.5 HP 4.0 HP

1400-1850 1700-2500

745-680-C5-002, Rev. A

3.5 Battery Refurbishment Plan

Battery

Refurbishment

Batteries Returned

from Site. Measure

and document 24

hour Open Circuit

Voltage (OCV).

(

Must occur within 24

hours of removal from

charger)

No

Measure

Conductance

Plan

Does battery meet

the minimum

conductance values

per Table 1?

Yes

Measure

Battery

Voltage

No Yes

Sort Batteries per

Conductance &

Properly recycle

batteries per EPA

requirements

Group re-deployable

batteries as indicated for

future deployment as

Batteries stored in

warehouses for

extended periods of

time refer to “Important

Storage Practices” on

Fig. 7, Flow Chart for Battery Refurbishment Plan

Measure

Battery

Voltage

Voltage

strings

page 8.

Does battery meet

the minimum of

12.6 Volts for the 24
hour OCV?

745-680-C5-002, Rev. A

21

4.0 Battery System Float Charging

Battery System Float Charging Voltage

Encountering temperature extremes

When you encounter temperature extremes, temperature compensate the oat
charging voltage. The temperature compensation coefcient is -0.0022 V/C per °F
(-0.004 V/C per °C).

For example if the normal battery temperature is 90°F (13° above 77°F) you should
reduce the average oat charging voltage range by 0.028 V/C (13° x -0.0022 V/C per
°F) to between 2.21 and 2.26 V/C.

If the battery operates at cold temperatures, (60°F, 17° below 77°F, for example), you

can increase the charging voltage to improve recharging time.

For example, increase the charging voltage range by -17° x -0.0022 V/C per degree
or 0.037 V/C.

Under or overcharging

If the battery is undercharged for a period of time during which there are multiple
discharges, the battery does not fully recharge after each discharge and provides
progressively lower capacity.

Excessive overcharging causes premature aging of the battery and loss of capacity,

noted by excessive oat current, corrosion of the plate grids, and gassing and drying

of the limited amount of electrolyte.

Severe overcharging over extended periods of time can induce a thermal runaway
condition. This requires replacing the battery system.

NOTE:

The following set points are recommended for AlphaCell HP Batteries when used with the XM
Series 2 or GMX Power Supply.

AlphaCellTM HP Batteries

Accept 2.35 V/C

Float 2.25 V/C

Temp Comp -4mV/C/C

22

745-680-C5-002, Rev. A

1

2

3

4

5

6

7

8

9

10

2.15

2.25

2.05

2.40

0

Volts Per Cell

Charger Current

Bulk Accept Float

4.0 Battery System Float Charging, continued

NOTE:

The following information specically pertains to Alpha XM Series 2 and HP Power Supplies.

4.1 AlphaPowerSupplyChargingProle

BULK charge is a “Constant Current” charge. This current is the maximum the charger

is capable of delivering: 10A for 615, 906/915/915HV, and 922/922HV. As the charge is
returned to the batteries, their voltage increases to a specic threshold (2.27Vdc per cell).

The BULK charger mode generally returns the battery charge state to 80 percent of rated
battery capacity. Bulk mode is not temperature compensated. The charger then automatically
switches to ACCEPT mode.

ACCEPT charge is a “Constant Voltage” charge. This voltage, 2.2-2.45Vdc per cell, is
manually adjustable if needed and temperature-compensated to ensure longer battery life
and proper completion of the charge cycle.

This cycle is complete when the charging current into the batteries becomes less than 0.5A,
or approximately six hours elapses from the time ACCEPT mode was entered. When the
batteries are fully recharged the charger switches to the FLOAT mode of operation.

FLOAT charge is a temperature-compensated charge, averaging about 2.1-2.35Vdc

(adjustable) per cell. During FLOAT mode, the batteries are fully charged and ready to

provide backup power.

During ACCEPT and FLOAT modes, the cell voltage is temperature-compensated at

-0.004Vdc per cell per degree C (adjustable) to ensure a safe battery cell voltage and to

maximize battery life.

For AlphaCell HP batteries, the recommended battery system oat charge voltage is equal

to the number of cells in the system multipled by the range of 2.1 to 2.35 volts per cell at

77°F(25°C).

For example, oat charge a string of 3 each 12 volt (6 cell) batteries within a range of 37.8 to

42.3 Vdc (18 cells x 2.1 V/C minimum and 18 x 2.35 V/C maximum) at 77°F(25°C).

Severe overcharging over extended periods of time can induce a thermal runaway condition.
This requires replacing the battery system.

745-680-C5-002, Rev. A

Fig. 8, Charger Modes (dashed line indicates HV models)

23

5.0 Troubleshooting

Problem with Symptom Possible Causes Possible Result Corrective Actions

Reduced operat-

Capacity Test
Results

Visual Battery
Checks

ing time at 77°F

(25°C) with

smooth voltage
decline

Reduced operat­ing time at 77°F

(25°C) with steep

voltage decline or
voltage plateaus

Excessive initial
voltage drop even
to the point of
dropping load in

the rst several

seconds

Cover or container
crack

Cover or container
explosion

Burned area on
container

Permanently
deformed

(swollen) container

Rotten egg odor

Melted grease at
terminals

Corrosion at
terminals

Normal life cycle

Individual low capacity cells

• Battery is extremely cold

• Cabling is too small

gauge

• High resistance

connections

• Battery is undersized

• Shorted cells

Handling or impact damage

Ignition of cell internal gasses
due to external source,
fusing, or internal conductive
path or internal spark due
to shorting. Potential exists
for ill-maintained batteries or
those left in service beyond
useful life.

Crack in container wicking
electrolyte to grounded rack.
Ground fault

Thermal runaway possible
caused by high temp.,
environment, overcharging,
excessively high recharge
current, shorted cells, ground
fault, or a combination
Possible caused by high
temperatuare environment,
overcharging, excessively
high recharge current, shorted
cells, ground fault, or a
combination of these.

Hot connections due to
excessive resistance caused
by loose connections, dirty
contact surfaces or corrosion
within connection

Possibly electrolyte leaking
from battery terminal seal
attacking the interunit
container

Eventual failure to support the
load followed by potential for
shorted cells

Reversed cells during discharge
Reversed cells will become very
hot and will not fully recharge

• Excessive voltage drop

• Cells will become hot, could

develop thermal runaway;
internal arcing could result in
an explosion

Cell dryout or ground fault.
Potential internal gas ignition

• Personal injury and equip-

ment damage at time of
explosion.

• Failure to support load.

Could result in

• personal hazard due to

conductive path to rack

• smoke or battery re

• thermal runaway

Could result in the emission of

hydrogen sulde, detectable as a
rotten egg odor, battery re, and

inability to support the load

Odor is a product of thermal
runaway

• Excessive voltage drop

perhaps leading to short
operating time or damaged
terminals

• In extreme case could lead

to melted terminal and
ignition of the battery cover

Increased connection resistance
and resulting increase in the
connection heating and voltage
drop at high rate discharge.

Replace battery system

when at 70% of rated

capacity or before

Replace the isolated low
capacity batteries

• Heat the battery

• Run parallel cables

or increase gauge of
cables

• Clean and reassemble

connections

• Add required parallel

strings

• Replace isolated

units with shorts and
evaluate entire string

Replace damaged unit.

Replace damaged unit and
evaluate balance of string.

Clear the ground fault and
replace defective unit. Evalu­ate balance of string.

Replace the battery system
and correct the items leading
to the theramal runaway
condition

Replace the battery system
and correct items leading to
thermal runaway condition

• Clean and reassemble

connection if damaged

• Replace batteries with

damaged terminals

Disassemble connection,
clean, coat connecting
surfaces and terminal area,
seal with anti-oxidation
grease, reassemble the
connection. If leakage about
terminal area is obvious, the
battery should be replaced.

24

Table 2, Troubleshooting

745-680-C5-002, Rev. A

5.0 Troubleshooting, continued

Problem with Symptom Possible Causes Possible Result Corrective Actions

Overcharging causes
excessive gassing and
drying out of electrolyte
and contributes to potential
thermal runaway.

Undercharging results in
gradual loss of operating
time and capacity with
successive discharge cycles.
If persistant, an irreversible
level of lead sulfate develops
on the plates resulting in a
permanent capacity loss

Reduced operating time

under load. Increased oat

current. Heating of cell during
discharge. Contributes to
potential thermal runaway.

Failure to support load. Could
result in an internal arc, could
ignite gasses within the cell.

• Personnel shock hazard

resulting in serious
injury or electrocution.

• Potential burning of

container at damaged

area or battery re.

Reduced battery life

• Reduced battery life

• Reduced life and

potential thermal
runaway

• Normal if not exceeding

18°F increase

Normal if not exceeding

18F/10C increase over

ambient

Reset the charger output
voltage to recommended
value.

• Reset the charger

output voltage to
recommended value.

• Equalize battery system

from 48 to 72 hours
and perform capacity
test. If capacity loss is
permanent, replace the
total battery system.

Replace individual battery.

Replace individual battery.

Determine the source of
ground fault and replace
battery.

Cool room or accept reduced
battery life

• Improve room air

conditioning

• Improve cabinet

ventilation

• Limit recharge current

• Limit recharge current

• Reduce within
specications

• Replace shorted cells

and evaluate total string.

DC Voltage
Checks

Temperature
Checks

System oat voltage >

2.3V/C average 77°F
(25°C)

System oat voltage <

2.25V/C average 77°F
(25°C)

Individual battery oat

voltage > 13.3 Vdc

Individual battery oat

voltage 14.5 Vdc for
6 cell

DC voltage measured
between battery system
output terminals and

ground (rack) or a

ground fault indicated
by automatic monitoring
equipment.
Elevated room tem­perature

Elevated battery temp.

High current recharge

Charger output set
incorrectly

Charger output set
incorrectly

• Potentially the

individual battery has
shorted cell

• Verify with impedance

or conductance check

Potentially open cells in

individual battery. Conrm
by checking for zero oat

current or check for very
high impedance of the
battery.

Damaged container allow­ing electrolyte to wick out

to grounded surface (rack).

Lack of adequate air condi­tioning or ventilation

• Elevated room temp.

• Inadequate cabinet

ventilation

• Discharge - charge

cycle

• High charging voltage

• Shorted cells

745-680-C5-002, Rev. A

Table 2, Troubleshooting, continued

25

5.0 Troubleshooting, continued

Type Symptom Possible Causes Possible Result Corrective Action

• Failure to support load. If an

internal arc occurs during
discharge, can ignite gasses
internal to cell.

• If there is an open/loose

connection in external con­ductive path, can damage
termination under load.

• Not at 100% capacity

• Conducive to thermal

runaway

• Thermal runaway results in

eventual meltdown of battery
and potential of hydrogen

sulde emissions and re.

Perhaps reduced operating time. Fully recharge battery.

• Reduced operating time.

• Conducive to thermal

runaway

• Will not support load

• Reduced operating time

• Conducive to thermal

runaway

• Will not support load

• Loose connections result

in heat damaged or melted
terminals during high rate
discharge.

• Excessive voltage drop

during high rate discharge
and resulting reduced
operating time

Loose connections result in heat
damaged or melted terminals
during high rate discharge

Excessive AC ripple could cause
the battery to cycle at the ripple
frequency and result in heating
and deterioration of the plate ac­tive material

• Reduced operating time.

• Potential conditions could

be conducive to thermal
runaway.

Replace battery with
open cell or repair

open/loose external

connection.

Determine specic

cause; take corrective
action.

Charge, retest battery
or replace as required.

Charge and retest
battery or replace as
required.

• Retorque

connection as
required

• Correct source

of contamination,
clean contact
surface areas,
grease contact
surfaces with anti­oxidant grease,
reassemble.

Retorque the
connection as required

Improve the charger

output ltering.

Verify battery condition.
Replace as required.

Float Charging
Current
Checks

High Rate 10
Second Load
Test

Battery

Impedance/

Conductance
Test

Connection
Hardware
Resistance

/ Tightness

Check

AC Ripple
Voltage
Checks

Float current to
string is zero

Float current
exceeds 3.0
milliamperes per
ampere hour of
rated capacity at

77°F(25°C) at oat

voltage.
Terminal voltage
marginally below
minimum voltage

specied for 10

second point.

Terminal voltage

signicantly below

minimum voltage

specied for 10

second point.

Impedance /

resistance increase

by 50% from

original values
or conductance

decline to 50% of

the value when new.

Connection
resistance increase

20% or more from

original value.

Connection
hardware tightness
is less than the

specied "retorque"

value.

AC ripple (p-p)

voltage on system

<4% of the value of
the DC oat voltage

Individual battery in
string exhibits AC
ripple voltage twice
that of other typical
batteries in string.

A battery or connection in series

string is open. Verify via the oat

voltage check or AC ripple voltage
or impedance check of individual
batteries.

• Batteries not fully recharged.

• Batteries above 77°F(25°C)

• Potentially shorted cells in

battery

• Depending on degree, bat-

tery entering or in thermal
runaway

Battery perhaps not fully charged
or is older, in service battery and
has somewhat lower capacity.

• Battery discharged of

battery conductive path,
plate grid, or active material
or electrolyte volume
deterioration.

• Shorted.

• Open cells.

• Battery discharged or battery

conductive path, plate grid or
active material, or electrolyte
volume deterioration.

• Shorted cells

• Open cells

• Repetitive cycles results

in heating and cooling of
connection, resulting in
relaxation of torque, increase
in connection resistance.

• Contamination within

the connection results in
corrosion and high terminal
resistance.

Repetitive cycles results in heat­ing and cooling of connection re­sulting in relaxation of torque and
increase in connection resistance.

Poor ltering of charger output.

Battery with high AC ripple
voltage has proportionately
higher impedance. Evaluate
for performance. Subject
battery could have deteriorating
conductive path or dry, shorted or
open cell.

26

Table 2, Troubleshooting, continued

745-680-C5-002, Rev. A

6.0 Battery Parameters by Model Number

Parameter

Terminal Type

Bolt Size 1/4"-20 UNC Bolt 1/4"-20 UNC Bolt

Annual Retorque Inch-Pounds / N•m 110In-lb / 2.4N•m 110In-lb / 2.4N•m

Open Circuit Voltage 12.80 12.80

Average Float Voltage Range (volts/unit)

Typical Impedance @ 60Hz ohms 2.7 2.2

Typical Conductance 7Hz mohms 1400 to 1850 1700 to 2500

Threaded Insert Threaded Insert

12.6 to 14.1 12.6 to 14.1

Model Number

3.5 HP 4.0 HP

Table 3, Battery Parameters, Current Models

745-680-C5-002, Rev. A

27

7.0 Warranty and Return Information

7.1 AlphaCell HP Limited Warranty

Float Service Outdoor VRLA Batteries

This limited warranty applies only to the original purchaser (“User”) of the Product supplied under the Supply Agreement.
A Battery will be considered defective, and can be replaced, when it fails to deliver 70% of its rated capacity during stated

warranty period provided that it has been used in accordance with the conditions listed below. Standard Warranty periods
are outlined in Table 4.

When a defective battery is identied the User should promptly notify manufacturer. Should manufacturer conrm the

Batteries to be defective they will replace the material found to be defective F.O.B. its Factory without charge except for
freight.

CONDITIONS AND LIMITATIONS: (all claims are subject)

1) Warranty date is based on Ship Date code stamped on battery.

2) Warranty applies in accordance with Table 4 of this section.

3) The standard warranty shown in Table 4 applies to AlphaCell HP Batteries used in Alpha enclosures in

conjunction with Alpha Power Supplies.

4) A baseline Two Year Warranty applies to AlphaCell HP Batteries used in other applications not dened in item

#3 shown above. AlphaCell HP batteries are not recommended for solar applications so please consult Alpha
Applications Engineering for an alternative battery solution for solar applications. Extended warranties beyond two

years may be available for unique enclosure/charger applications based on preapproval by Alpha Engineering.

Consult your salesperson for details.

5) Each Battery must be of proper size, design and capacity for its application in order for the warranty to apply.

6) Each Battery must be charged, discharged, stored and serviced in accordance with the AlphaCell HP owners

manual and user's guide.

7) Warranty is void if Battery is subject to misuse, abuse or physical damage or if Battery becomes unserviceable due
to re, wreckage, freezing, or any act of God.

8) Battery must be used with a temperature compensation charger having characteristic charging curves (voltage
and current) acceptable with standard manufacturer’s charging practices as outlined in the AlphaCell HP owners

manual and user's guide.

9) User agrees that manufacturer’s representative shall have access to equipment furnished hereunder for purpose of

inspection at reasonable hours and intervals in order for the warranty to apply.

10) All defective and replacement Batteries, if returned, become property of manufacturer.

11) Field Batteries replaced through limited warranty terms and conditions will receive the balance of original warranty.

12) Standard AlphaCell HP Warranty requires a minimum semiannual preventive maintenance schedule with records

as outlined in the AlphaCell HP owners manual and user's guide.

CLAIMS:

1) Contact original point of purchase for instructions on applicable warranty claim procedures.

2) Upon satisfactory proof of claim as determined by manufacturer, manufacturer shall repair or replace, at its option,

any defective Battery based upon the purchase price, exclusive of freight and labor.

3) Manufacturer does not accept any product for return, credit or exchange unless expressly authorized by

manufacturer in writing and returned prepaid to its plant.

ALPHA SHALL NOT BE LIABLE FOR, AND USER SHALL INDEMNIFY AND SAVE ALPHA HARMLESS FROM ANY CLAIMS
AND LIABILITIES ARISING OUT OF THE USE, MAINTENANCE, TRANSPORTATION, OR INSTALLATION OF ANY EQUIPMENT
WARRANTED HEREUNDER. THE FOREGOING LIMITED WARRANTY IS IN LIEU OF ALL WARRANTIES EXPRESSED OR
IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. THE SOLE
LIABILITY OF IS SET FORTH UNDER THE CLAIMS PARAGRAPH ABOVE. SHALL NOT HAVE ANY LIABILITY FOR ANY SPECIAL
INCIDENTAL INDIRECT OR CONSEQUENTIAL DAMAGES. THIS LIMITED WARRANTY APPLIES ONLY TO THE ORIGINAL

PURCHASER (USER) OF THE EQUIPMENT, AND IS NON-TRANSFERABLE.

28

745-680-C5-002, Rev. A

7.1 AlphaCell HP Standard Limited Warranty, continued

The table below indicates the warranty periods for AlphaCell HP Batteries used with Alpha approved power supplies and enclosures.

Battery Model Description Warranty (US/Canada) Warranty (International

3.5 HP Pure Lead 5 Years 4 Years

4.0 HP Pure Lead 5 Years 4 Years

Table 4, Warranty periods for AlphaCell HP batteries

745-680-C5-002, Rev. A

29

7.2 Battery Maintenance Report for Return Authorizations

Contact your Alpha Customer Service representative for assistance in processing your AlphaCell HP
warranty claim.

Alpha Customer Service [phone], or fax# [phone]

This form, in conjunction with Alpha's Battery Evaluation Procedure is intended as a method of collecting

data critical to the efcient processing of your warranty battery claims. Record battery oat voltage
while the battery is still connected to the system. Record battery open circuit voltage (OCV) 24 hours

following removal from the system. Describe the problem encountered with the battery as compared to
the remaining batteries in the battery string. The ZRE# will be provided after you submit your request to
Alpha for processing.

Original Purchase Order (if available)

Company Name

Address

CSZ

Contact Name

Phone

Email address

Replacement Units Address

CSZ

Contact Name

Phone

Email address

Initial

Install

Date

Mfr.

Date

Code

PM

History

Float

Current

Battery

Temperature

Evaluation Procedure #1Evaluation Procedure #2Evaluation Procedure

Vdc Float
No Load

Conductance

mhos @

77°F

Vdc 24

Hour OCV

Conductance

mhos @

77°F

Vdc @ 100A

after 10
seconds

#3

Conductance

mhos @

77°F

30

745-680-C5-002, Rev. A

This page intentionally blank

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Visit us at www.alpha.com

Due to continuing product development, Alpha Technologies reserves the right to change specications without notice.
Copyright © 2011 Alpha Technologies. All Rights Reserved. Alpha® is a registered trademark of Alpha Technologies. 745-680-C5-001 Rev. A (7/2011)