C&D Technologies RS-990 User Manual

RS-990

Power Solutions



LIBERTY®SERIES 1000
Valve-regulated Lead Acid Batteries
Installation and Operating Instructions

SAFETY PRECAUTIONS

Only authorized and trained personnel familiar with standby battery installation, preparation, charging and
maintenance should be permitted access to the battery.

WARNING

SHOCK HAZARD - DO NOT TOUCH UN-INSULATED BATTERY, CONNECTORS OR TERMINALS.
BE SURE TO DISCHARGE STATIC ELECTRICITY FROM TOOLS AND TECHNICIAN BY TOUCHING
A GROUNDED SURFACE IN THE VICINITY OF THE BATTERIES BUT AWAY FROM THE CELLS
AND FLAME ARRESTERS.

ALL TOOLS SHOULD BE ADEQUATELY INSULATED TO AVOID THE POSSIBILITY OF SHORTING
CONNECTIONS. DO NOT LAY TOOLS ON THE TOP OF THE BATTERY.

®

ALTHOUGH LIBERTY
MAL OPERATION, THEY CONTAIN POTENTIALLY EXPLOSIVE GASES, WHICH MAY BE RELEASED
UNDER ABNORMAL OPERATING CONDITIONS, SUCH AS A CHARGER MALFUNCTION. PROVIDE
ADEQUATE VENTILATION SO HYDROGEN GAS ACCUMULATION IN THE BATTERY AREA DOES
NOT EXCEED ONE PERCENT BY VOLUME. HOWEVER, NORMAL AIR CIRCULATION IN A VENTI­LATED FACILITY WILL PRECLUDE ANY HYDROGEN BUILD-UP, EVEN DURING EQUALIZE CHARG­ING. NEVER INSTALL BATTERIES IN A SEALED CABINET OR ENCLOSURE. IF YOU HAVE ANY
QUESTIONS, CONTACT YOUR LOCAL C&D TECHNOLOGIES AGENT.

SERIES 1000 BATTERIES ARE SEALED AND EMIT NO GAS DURING NOR-

THIS BATTERY CONTAINS
SKIN CONTACT WITH ELECTROLYTE, REMOVE CONTAMINATED CLOTHING AND FLUSH
AFFECTED AREAS THOROUGHLY WITH WATER. IF EYE CONTACT HAS OCCURRED, FLUSH
FOR A MINIMUM OF 15 MINUTES WITH LARGE AMOUNTS OF RUNNING WATER AND SEEK
IMMEDIATE MEDICAL ATTENTION.

THIS BATTERY IS DESIGNED FOR
APPLICATION IN VEHICULAR STARTING, LIGHTING AND IGNITION AND/OR OPERATION OF
PORTABLE TOOLS AND APPLIANCES. USE ONLY IN ACCORDANCE WITH MANUFACTURER’S
WRITTEN INSTRUCTIONS. USE OF THIS PRODUCT OTHER THAN IN ACCORDANCE WITH
MANUFACTURER’S WRITTEN INSTRUCTIONS MAY PRODUCE HAZARDOUS AND UNSAFE
OPERATING CONDITIONS, LEADING TO DAMAGE OF EQUIPMENT AND/OR PERSONAL INJURY.

SULFURIC ACID, WHICH CAN CAUSE SEVERE BURNS. IN CASE OF

INDUSTRIAL USE ONLY AND IS NOT INTENDED FOR

IMPORTANT FOLLOW MANUFACTURER’S PUBLISHED INSTRUCTIONS WHEN INSTALLING, CHARGING AND

SERVICING BATTERIES. THIS MANUAL IS TO BE USED FOR THE INSTALLATION AND
OPERA

TION OF C&D

TECHNOLOGIES

VE-REGULA

AL

V

TED LIBERTY SERIES 1000 BATTERIES.

FOR ADDITIONAL INFORMATION CONTACT:

C&D Technologies, Inc.
1400 Union Meeting Road, PO Box 3053
Blue Bell, PA 19422-0858
215-619-2700 or 1-800-543-8630, Fax [phone]
www.cdtechno.com

FOR TECHNICAL or WARRANTY ASSISTANCE CONTACT:

Technical Service Department located at:
1400 Union Meeting Road
Blue Bell, PA 19422
215-619-2700 or 1-800-543-8630, Fax [phone]

WARRANTY NOTICE

This instruction manual is not a warranty. Each standby battery is sold subject to a limited
warranty, which is in place of all other warranties, express or implied (including the warranties of
merchantability or fitness for a particular purpose) and which limits a purchaser’s (user’s)
remedy to the repair or replacement of a defective battery or parts thereof. The terms of the
limited warranty are incorporated herein and are available upon written request from C&D
Technologies, Inc., 1400 Union Meeting Road, PO Box 3053, Blue Bell, PA 19422-0858 or in
Canada C&D Technologies, Inc., Canada, 7430 Pacific Circle, Mississauga, ON
L5T 2A3.

1

INTRODUCTION

The batteries referenced in this document are valve-regulated lead acid Liberty Series 1000®.
They are constructed with pasted lead calcium plates with an absorbent glass mat and are
valve-regulated.They are designed to provide long, reliable service life with minimal
maintenance. The cells/units are shipped pre-assembled in 2-, 4-, 6- and 12-Volt modules to
enable quick and easy installation. When operated at the recommended float voltage and
temperature, the batteries emit virtually no gas or acid mist and do not need special
ventilation other than what is required by local building codes. This makes Liberty Series
1000 batteries an ideal reserve power source for many critical applications, including
telecommunications, switchgear and control, and uninterruptible power supply (UPS)
systems. The Liberty Series 1000 product brochure and additional information are available
on the C&D Technologies website at www.cdtechno.com.

Recombination: A More Efficient Design

In addition to eliminating the need for watering, the uniquely efficient recombination design
also makes Liberty Series 1000 batteries lighter and more powerful than conventional lead-

. Oxygen evolves from the positive plates where it is converted back to water

acid batter

ies

by electro chemical recombination, eliminating the need for watering.

CAUTION:

Do not remo

ve vent covers, they must remain in place at all times. Removal

will void warranty.

Specifications are subject to change without notice

. Contact your C&D Technologies sales
office for the latest specifications. All statements, information and data given herein
are belie

ved to be accurate and reliab

le but are presented without guaranty, warranty, or
responsibility of any kind, express or implied. Statements or suggestions concerning possi­ble use of our products are made without representation or warranty that any such use is
free of patent infr

ingement, and are not recommendations to infringe any patent.

The user
should not assume that all safety measures are indicated, or that other measures may not be
required.

2

RECOMMENDED TECHNICAL REFERENCES AND EXPERTISE

These instructions assume a certain level of competence by the installer/user. The following
recommended practices and codes contain relevant information, and should be consulted for safe
handling, installation, testing and maintaining standby batteries. Applicable state and local codes must
be followed.

IEEE Std. 485-1997, IEEE Recommended Practice for Sizing Large Lead Acid Storage Batteries for Generating
Stations and Substations (ANSI)

IEEE 1189-1996, IEEE Guide for Selection of Valve-Regulated Lead Acid (VRLA) Batteries for Stationary
Applications

IEEE 1188-1996, IEEE Recommended Practice for Maintenance, Testing, and Replacement of Valve Regulated
Lead-Acid Storage Batteries for Stationary Applications

IEEE 1187-2000, IEEE Recommended Practice for Installation Design and Installation of Valve Regulated Lead­Acid Storage Batteries for Stationary Applications

IEEE - PAR-1375-1998 “Guide for Protection of Stationary Battery Systems”

NESC, National Electric Safety Code, ANSI C2-1993 (or latest revision)

Copies may be obtained by writing: The Institute of Electrical and Electronic Engineers, Inc.

345 East 47th Street, New York, NY 10017, USA

ANSI - T1.330-1997, Valve-Regulated Lead Acid Batteries Used in the Telecommunications Environment

NEC National Electrical Code NFPA -70 (latest version) available from:

National Fire Protection Association Batterymarch Park, Quincy, MA 02269

Federal Codes:

ety Requirements f

29CFR1926.441

29CFR1910.151(c) “Medical Services and First Aid”

29CFR1910.268(g) “Telecommunications”

29CFR1910.305(j) “Wiring Methods, Components and Equipment”

STD 1-8.2(e)

IBC, International Building Code

This manual is divided into four parts: Receiving and Installation of the battery, Operation and Maintenance,
Reference and Trouble-Shooting section to assist the user should he require more detailed explanation of battery
performance and maintenance procedures, and the Appendix.

Before handling cells or storing cells for future installation take time to read this manual. It contains
information that could avoid irreparable damage to the battery and/or void product warranty.

“Saf

“

OSHA Standing Directive”

or Special Equipment”

3

LIBERTY SERIES 1000

ALVE-REGULATED (SEALED) LEAD ACID BATTERIES

V
INSTALLATION AND OPERATING INSTRUCTIONS

TABLE OF CONTENTS PAGE

INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Recombination: a more efficient design
Recommended Practices, Technical Sources

PART 1

RECEIVING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

SECTION 1 - RECEIVING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1 General Information and precautions

1.2 Safety

1.3 Packing, Inspection at time of delivery

1.4 Damage and shortage situations

1.5 Unpacking and handling

SECTION 2 - STORAGE and SHELF LIFE . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1 Storing charged batteries

SECTION 3 - INSTALLATION AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . 8

3.1 Location and preparation

3.2 Ventilation

3.3 Modular rack assembly

3.4 Relay rack assembly

3.5 Optional steel jackets for batteries/units operating in a demanding
environment

SECTION 4 - ELECTRICAL CONNECTIONS

4.1 Preparing electrical contacting surfaces

4.2 Polarity inspection of assembled units and inter-row, inter-tier con­nections

4.3 Connecting and torquing battery terminal posts

4.4 Checking connection integrity

4.5 Parallel battery strings

PART 2

CHARGING AND OPERATION OF BATTERY. . . . . . . . . . . . . . . . . . . . . . . 16

SECTION 1 - CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1.1 General information and precautions

1.2 Initial charge

1.3 Constant voltage charging

1.4 Initial charge records

1.5 Warning labels

. . . . . . . . . . . . . . . . . . . . . . .

12

4

SECTION 2 - BATTERY OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.1 Float charging

2.2 Equalizing charge

2.3 Over-voltage

2.4 Voltmeter calibration

SECTION 3 - GENERAL INFORMATION AND MAINTENANCE. . . . . . . . . 20

3.1 Performance characteristics

3.2 Capacity and testing

3.3 Low cell voltages

3.4 Effects of temperature

3.5 High ambient temperature

3.6 Cleaning cell covers

3.7 Tap connections

3.8 Putting batteries into storage

3.9 Record keeping

PART 3
TROUBLE-SHOOTING and AVOIDING BATTERY DEGRADATION and

RECOGNIZING PROBLEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

SECTION 1 - HOW TO AVOID BATTERY DEGRADATION . . . . . . . . . . . . . 26

1.1 General information and precautions

1.2 Float versus cycle life

1.3 Low float voltage and sulfation

1.4 Hydration

1.5 Open circuit - late installations

1.6 Parallel battery strings

1.7 High temperature operation

APPENDIX A - MATERIAL SAFETY DATA SHEETS . . . . . . . . . . . . . . . . . . 29

APPENDIX B - WARRANTY PROVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . 35

APPENDIX C - VALVE REGULATED LEAD ACID BATTERY and

CHARGER INSPECTION REPORT FORM . . . . . . . . . . . . 36

5

PART 1
RECEIVING AND INSTALLATION

SECTION 1 - RECEIVING

1.1 General Information and Precautions

This battery is designed for industrial use only and is not intended for
application in vehicular starting, lighting, and ignition, and/or operation
of portable tools and appliances. Use only in accordance with
manufacturer’s written instructions. Use of this product other than in
accordance with manufacturer’s written instructions may produce
hazardous and unsafe operating conditions, leading to damage of
equipment and/or personal injury.

1.2 Safety

Charge only in accordance with manufacturer’s operating instructions.
Do not expose to open flame or electrical arc.
Do not tamper with cell covers that prevent access to vents.
Observe all precautions shown on the inside cover of this manual.

1.3 Packing, Inspection at time of delivery

Every precaution has been taken to pack the battery for shipment to
ensure its safe arrival. As soon as you receive the battery, check the
packing mater

ial for evidence of damage in transit. If the packing
material is physically damaged or wet acid stains are present, make a
notation on the delivery receipt

before you accept the shipment/

delivery.

Note: Freight Carriers generally require that the carriers’

representativ

e inspect concealed damage within 15 days

from date of delivery to determine responsibility. The

xtend up to 9 months.

resolution of such claims ma

erify the number of cartons and skids against the bill of lading and

V

ify the components against the pac

er

v

y e

king lists

Keep a copy of the

.
verified lists for your installation records. It is important to verify that
the accessor
correct.

y package is present and the component quantity is

echnologies

If help is required call y

our local C&D

T
Representative or C&D Technologies Customer Service at 800-543­8630 to report any discrepancies.

1.4 Damage and shortage situations

C&D

echnologies ships FOB plant (o

T

wnership passes at our doc

k). If
shipments are damaged or if cartons or skids are damaged or miss­ing,

a claim must be filed with the carrier. Place an immediate

echnologies and use the replace-

order f

or replacement with C&D

T
ment cost as the amount of freight that damages or shortages
involved. If individual components or parts are missing, a shortage

t should be fi

repor

led immediately with C&D

Technologies. Mail

(express mail recommended) or fax a copy of the VERIFIED compo-

6

nent packing list. This verified list should show both the name of the
packer, as well as the quantities of items checked off by the receiver.

Send the list to:

C&D Technologies, Inc.
Attn.: Customer Service

1400 Union Meeting Road
Blue Bell, PA 19422

SECTION 2 - STORAGE and SHELF LIFE

2.1 Storage of VRLA (valve regulated lead acid) Batteries

Store batteries indoors, preferably at 77°F (25°C) or in a cool 20°F to
90°F (-7°C to 32°C), dry location and place on charge by the

date

found on the battery carton.

Note:

Batteries that are not placed in service for several months will
self-discharge.

Storage time is based on storage at 77°F (25°C) and is six months for

valve regulated cells. Do not allow the electrolyte

Liberty Series

1000
to freeze, as this will destroy the battery and can cause a potentially
hazardous condition and leakage.

Refer to Table 1, for electrolyte freezing temperatures. Although the
specific gravity of a fully charged battery may present no freezing

lem, a discharged battery gravity may freeze at relatively mild

prob
temperatures.

TABLE 1 - FREEZING TEMPERATURE VS SPECIFIC GRAVITY

Specific Gravity Freezing Temperature

at 77°F (25°C)

ahrenheit

Celsius

1.000

1.050

1.100 -7.7 +18

1.150 -15 + 5

1.200

1.250 -52 -61

1.300 -70 -95

1.350

1.400 -36 -33

0.0 +32

-3.3 +26

-27 -17

-49 -56

F

Note: Store cells upr

ight in order to maximiz

e electrolyte contact with

the plates.

e limitations

2.2 Stora

g

C&D Technologies Liberty Series 1000 valve-regulated (sealed) lead

7

acid batteries are warranted against defects in materials or manufac­turing or both. To keep the warranty in effect, you must place the units
on charge by the date stamped on the shipping carton when stored at
77°F (25°C). If storage beyond this time is required or storage temper­ature is in excess of 77°F (25°C), monitor battery voltage at monthly
intervals, if possible. A convenient measurement technique is to read
the open circuit voltage. If the open circuit voltage drops below 2.10
volts per cell from the nominal value, the cell(s) must be given a boost
charge at the “Initial/Equalize” voltage shown in Table 2. With the
exception of the LS 2-600 all units consist of multiple cells. Refer to
Table 2 for the nominal voltage and number of cells for a particular
Liberty Series unit. Ne

ver charge the cells at a higher voltage than the

equalize/ boost voltage recommended in Table 2, at 77°F (25°C). If
cell temperature is below 60°F (16°C), double the initial/equalize
charge time that is typically 12-16 hours at 77°F (25°C).

If this is not possible, contact C&D Technologies, Inc., Technical
Services Department for special instructions.

Always complete a record of initial charge, refresh charges during
storage, and fl

t 2, Section 1.2 using RS-1511 of this manual and retain the

Par

oat charge readings as described in

“initial charge”

readings in your files for future reference. Clearly identify your installa­tion location, application, C&D Technologies model n

umber

, the date,

and name of the person who took the readings.

The ser

vice life of the battery will depend on its ambient temper

ature,
frequency and depth of discharge, discharge rate, charge voltage, and
regulation of the battery charger.

SECTION 3 - INST

ALLATION AND CONNECTION

3.1 Location and Preparation

ies 1000 batteries are best installed upright. Physical

ty Ser

Liber
dimensions for layout may be found in Table 2. Install battery in a cool,
dry location away from heat sources.The recommended operating
temper

ature is 65-77

°F (18-25°C). The allowable temperature range
with performance degradation at the extreme temperatures is 32-90°F
(0-32°C). Float voltage compensation should be made for temperatures

F (25°C).

other than 77

°

Avoid sources of hot or cold air directed on a section of the
batter

y that could cause temperature variations within the
battery assembly. Such variations will compromise optimum
battery performance such as float voltages of individual cells.

When handling units never lift them by the terminals as this can
damage the post seals and cause acid leakage.

8

TABLE 2 - BATTERY SPECIFICATIONS

(Characteristics subject to change without notice. Refer to current specifications 12-373)

Model LS 12-25* LS 6-50* LS 12-55 LS 12-80
Nominal voltage 12 Volts 6 Volts 12 Volts 12 Volts
Number of cells in 6/unit 3/unit 6/unit 6/unit

module
Rated 8 hr. 25 Ah 50 Ah 52 Ah 80 Ah

Capacity (Ampere- to to to to
hours to 1.75 Vpc) 10.50 Volts 5.25 Volts 10.50 Volts 10.50 Volts

Rated 15-min. capacity 0.092 0.185 0.172 0.275
(kiloWatts to 1.67 Vpc)

Internal resistance/cell 0.0017 Ohms 0.0008 Ohms 0.00157 Ohms 0.00094 Ohms
Short circuit current 1155 A 2310 A 1274 A 2128 A
Unit height 7.11 in 7.11 in 9.20 in 9.20 in

(181 mm) (181 mm) (234 mm) (234 mm)

Unit length 7.64 in 7.64 in 10.20 in 13.94 in
(includes handles) (194 mm) (194 mm) (234 mm) (354 mm)

Unit width 5.20 in 5.20 in 6.80 in 6.80 in

(132 mm) (132 mm) (173 mm) (173 mm)

Weight 23 lbs 23 lbs 56 lbs 79 lbs

(10 kg) (10 kg) (25 kg) (36 kg)

Terminal 0.55 in (14 mm) 0.55 in (14 mm) 0.55 in (14 mm) 1.00 in (25 mm)
Characteristics diameter threaded diameter threaded diameter threaded diameter threaded

brass insert, 0.50 brass insert, 0.50 brass insert, 0.50 brass insert, 0.75

in (13 mm) deep. in (13 mm) deep. in (13 mm) deep. in (19 mm) deep.

Fasten with 10-32 Fasten with 10-32 Fasten with 10-32 Fasten with 1/4-20

stainless steel stainless steel stainless steel stainless steel

hex bolt/washer hex bolt/washer hex bolt/washer hex bolt/washer

Tightening torque 45 in-lbs (5.1 N*m) 45 in-lbs (5.1 N*m) 45 in-lbs (5.1 N*m) 110 in-lbs (12.4 N*m)
Re-torque 40 in-lbs (4.5 N*m) 40 in-lbs (4.5 N*m) 40 in-lbs (4.5 N*m) 100 in-lbs (11.3 N*m)

Boost charge voltage 2.33 +/-.02 Vpc 2.33 +/-.02 Vpc 2.33 +/-.02 Vpc 2.33 +/-.02 Vpc
Nominal float voltage 2.26 +/-.01 Vpc 2.26 +/-.01 Vpc 2.26 +/-.01 Vpc 2.26 +/-.01 Vpc
Electrolyte at 77°F 1.300 Specific 1.300 Specific 1.300 Specific 1.300 Specific

(25°C) nominal value Gravity Gravity Gravity Gravity

*These units ha

ve been discontinued

9

TABLE 2 (CONTINUED)

Model LS 12-100 LS 6-200 LS 4-300 LS 2-600
Nominal voltage 12 Volts 6 Volts 4 Volts 2 Volts
Number of cells in 6/unit 3/unit 2/unit 1/unit

module
Rated 8 hr. 100 Ah 200 Ah 300 Ah 600 Ah

capacity (Ampere- to to to to
hours to 1.75 Vpc) 10.5 Volts 5.25 Volts 3.5 Volts 1.75 Volts

Rated 15-min capacity 0.344 0.688 1.032 2.063

(kiloWatts to 1.67 Vpc)

Internal resistance/cell 0.0008 Ohms 0.0004 Ohms 0.0003 Ohms 0.0001 Ohms
Short circuit current 2545 A 5089 A 7634 A 15267 A
Unit height 9.20 in 9.20 in 9.20 in 9.20 in

(234 mm) (234 mm) (234 mm) (234 mm)

Unit length 16.58 in 16.58 in 16.58 in 16.58 in
(includes handles) (421 mm) (421 mm) (421 mm) (421 mm)

Unit width 6.84 in 6.84 in 6.84 in 6.84 in

(174 mm) (174 mm) (174 mm) (174 mm)

Weight 95 lbs 95 lbs 95 lbs 95 lbs

(43 kg) (43 kg) (43 kg) (43 kg)

Terminal 1.00 in (25 mm) .00 in (25 mm) 1.00 in (25 mm) 1.00 in (25 mm)
characteristics diameter threaded diameter threaded diameter threaded diameter threaded

brass insert, 0.75 brass insert, 0.75 brass insert, 0.75 brass insert, 0.75

in (19 mm) deep. in (19 mm) deep. in (19 mm) deep. in (19 mm) deep.

Fasten with 1/4-20 Fasten with 1/4-20 Fasten with 1/4-20 Fasten with 1/4-20

stainless steel stainless steel stainless steel stainless steel

hex bolt/washer hex bolt/washer hex bolt/washer hex bolt/washer

Tightening torque 110 in-lbs
Re-torque 100 in-lbs

Boost c
Nominal float voltage 2.26 +/-.01 Vpc 2.26 +/-.01 Vpc 2.26 +/-.01 Vpc 2.26 +/-.01 Vpc
Electrolyte at 77°F (25°C) 1.300 Specific 1.300 Specific 1.300 Specific 1.300 Specific

nominal value Gravity Gravity Gravity Gravity

harge voltage 2.33 +/-.02 Vpc 2.33 +/-.02 Vpc 2.33 +/-.02 Vpc 2.33 +/-.02 Vpc

(12.4 N*m)
(11.3 N*m)

110 in-lbs
100 in-lbs

(12.4 N*m)
(11.3 N*m)

110 in-lbs
100 in-lbs

(12.4 N*m)
(11.3 N*m)

110 in-lbs
100 in-lbs

(12.4 N*m)
(11.3 N*m)

3.2 Ventilation

ies 1000 battery is a valve-regulated, low-maintenance battery, which, under normal float

The Liber

ty Ser
conditions, requires only normal room ventilation. Therefore, under normal float operation, Liberty batteries
can be installed in proximity to electronic equipment and in computer rooms with personnel present.

However, should the battery be subjected to excessive overcharge, hydrogen and oxygen can be vented to
the atmosphere.
precautions m

10

Therefore, the battery should never be installed in an airtight enclosure. Sufficient

ust be taken to prevent excessive overcharge and containment of potential gases.

VRLA batteries when subjected to extreme overcharge (above the
recombinant ability of the cell) can release hydrogen gas at a
maximum rate of 0.000269 cubic feet per minute per ampere of
charging current at 77°F (25°C) at atmospheric pressure.

3.3 Rack Assemblies

Liberty Series 1000 batteries may be installed in a variety of
mounting assemblies

• Modular Rack assembly (Figure 3.1) - battery units may be assem­bled in a floor mounted module or rack. One modular rack available
from C&D Technologies, Inc. is designed to mount the units in a
sturdy open frame that is stackable. They are available in 29" and
43" (74 cm and 109 cm) lengths. Optional panels are available to
enclose the racks, providing a cabinet-like appearance. (Figure 3.2)
For additional information refer to specification 12-373 and 12-380.

• When large numbers of batteries are required for the application
and a dedicated battery room may be provided, conventional tiered

ks may be appropriate.

rac

FIGURE 3.1 - Modular Rack Assembly

3.4 Relay Rack Assemb

ly

• Battery units can be mounted in standard 19" and 23" (48 cm and

ames. A typical C&D Technologies “tray layout” is

58 cm) relay rac
shown in Figure 3.3.

k fr

Specially designed trays/fixtures should be

ordered for relay rack applications.

3.5 Optional Steel Jackets for Batteries/Units operating in a

demanding environment

Although a metal jacket cannot change the thermal degradation or
electro/chemical properties of the battery exposed to elevated
temper

atures, it will physically contain the cells exposed to elevated
temperatures by retaining compression on the positive and negative
plates and absorbent glass mat between the plates.The net effect and

pose is that the plates are pro

pur
contained electrolyte

.

vided with a uniform exposure to the

Note: Optional steel jackets are recommended if the batteries are

xpected to e

e

xperience frequent periods of operation at

temperatures in excess of 90°F (33°C).

FIGURE 3.2 - Modular Rack With Panels

FIGURE 3.3 - Relay Rack Trays

11