MRX Ni-Cd batteries

October 2010
MRX Ni-Cd batteries
Installation and operating instructions
Important recommendations
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Make sure that the plastic
strapping and front plates remain
in place during storage (for blocks
delivered without metallic frames).
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Never allow an exposed flame or
spark near the batteries,
particularly while charging.
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Never smoke while performing
any operation on the battery.
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Do not expose to direct sunlight or
excessive heat.
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For protection, wear rubber
gloves, long sleeves, and
appropriate splash goggles
or face shield.
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The electrolyte is harmful to skin
and eyes. In the event of contact
with skin or eyes, wash
immediately with plenty of water
for a minimum of 15 minutes.
If eyes are affected, flush with
water, and obtain immediate
medical attention.
Battery delivered discharged may
be stored for many years before
installation. For battery delivered
charged (80%) please refer to
5.3 and 5.4.
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Remove all rings, watches and
other items with metal parts
before working on the battery.
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Use insulated tools.
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Avoid static electricity and take
measures for protection against
electric shocks.
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Discharge any possible static
electricity from clothing
and/or tools by touching an
earth-connected part "ground"
before working on the battery.
1. Receiving the shipment
Unpack the battery immediately
upon arrival. Do not overturn the
package. Generally MRX batteries
are shipped discharged and filled
with electrolyte. An accessory kit
should also be included.
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Make sure all items have been
received by comparing with the
packing list.
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Check for damage or electrolyte
spillage. Report any irregularities
to the carrier and Saft.
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Never operate the battery with
coloured transport seals inserted
on the outlet and inlet of each
module as this will damage
permanently the battery.
3. Installation
Remove the transport seals.
3.1. Battery configuration varies
depending on the requirement.
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Block battery directly fitted inside a
battery box.
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Block battery to be installed by
customer in battery box designed
by Saft. In this case, the block
battery is delivered with two front
plates and plastic strapping used
for shipment and handling. Front
plates and plastic strapping must
be removed just before battery
installation. Don't remove the front
plates and plastic strapping if the
battery is stored.
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Block battery to be managed
directly by the customer. In this
case the block batteries are
delivered in light self-keeping
cradles. Never remove this
assembly.
3.2. Verify that cells are correctly
interconnected and battery is
correctly connected to the load.
3.3. Check torque of terminal
connecting screws.
Torque must be: 10 ± 2 N.m
Connections and terminal screws
must be protected against corrosion
by coating with a thin layer of
neutral vaseline or anti-corrosion oil
agreed by Saft.
2. Storage
4. Water filling system installation
Store the battery indoors in a dry,
clean, and cool location (0°C to
+30°C / +32°F to +86°F).
Remove transport seals and connect
hydraulic tubing between block
battery according to the battery
drawing delivered by Saft. Saft's
Water Filling Systems follows specific
rules, please respect carefully Saft's
battery drawing for installation.
Make sure that the pipes are
completely inserted to ensure a
good tightness.
Hydraulic connection of cells is in
parallel to the electrical connection
in order to avoid voltage differences
of more than 1.2 V between two
cells connected by this method.
The hydraulic connection must be
horizontal in order to avoid any
siphon.
The water filling circuit outlet must
not be located close to electrical
equipment, and electrical circuit or
metallic structure.
Water filling circuit input must be
connected to the self-closing inlet.
When installed, check the water
filling circuit for continuity
(no obstruction) and tightness
(no leaks) using a pressure test
(a kit may be supplied by SAFT).
5. Commissioning
Caution: during constant charging
operations, the battery box must be
open.
5.1. Discharged block-battery put
into operation immediately after
delivery or after less than one year
of storage:
a) charge at constant current:
at 0.2 C5 A for 8 h
b) charge at constant voltage:
1.55 V/cell for 20 h with the
current limited at 0.2 C5 A
Charge at constant current is
recommended.
The battery is ready for use.
MRX Ni-Cd batteries
5.2. Discharged block battery
stored more than 1 year:
a) charge at 0.2 C5 A for 10 h
b) discharge at 0.2 C5 A down to
1.0 V/cell
Between discharge and the
following charge, the battery must
be kept in open circuit for
8 hours or battery temperature
down to ≤ +30°C (≤+86°F).
c) charge at 0.2 C5 A for 8 h
The battery is ready for use.
5.3. Charged block-battery (80%)
shipped and stored at temperatures
below +30°C (+86°F), less than
3 months from date of charge:
the battery is ready for use.
5.4. Charged block-battery (80%)
shipped and stored at temperatures
above +30°C (+86°F) or stored more
than 3 months from date of charge:
a) charge at 0.2 C5 A for 10 h
b) discharge at 0.2 C5 A down to
1.0 V/cell
c) charge at 0.2 C5 A for 8 h
to +86°F), the charge voltage
correcting factor is:
– 3 mV/°C/cell (– 1.7 mV/°F/cell)
if the charging voltage is ≥ 1.45 V
at +20°C (+68°F)
For any other charging voltages,
consult Saft.
To minimise the water
consumption, Saft recommends
the use of low charging voltage.
7. Topping-up
Before topping up operation, the
water filling circuit of the battery
must be checked for tightness (no
leaks) using a pressure test (a kit
may be supplied by SAFT).
Use only distilled and deionized
water for topping-up.
Connect distilled water tank to the
self-closing inlet.
Topping-up is completed when an
excess of 1 litre of water is measured
at the outlet of the water filling circuit.
The battery is ready for use.
Topping-up can be performed by
Saft's gravity kit or by using Saft's
water filling stations.
6. Charging in service
8. Periodic maintenance
On-board application (railway)
The battery is cycled up to 20%
Depth Of Discharge (DOD) per day.
In addition to the topping-up,
a periodic maintenance shall be
carried out at least every 5 years.
For detailed maintenance, please
refer to the maintenance manual of
the battery.
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• Single level charge:
1.45 to 1.55 V/cell at +20°C (+68°F)
1.47 V/cell is recommended
Stationary application
The battery is on float and discharged
only in case of emergency.
• Single level charge:
1.41 to 1.43 V/cell at +20°C (+68°F)
• Dual level charge:
- High level: 1.43 to 1.50 V/cell
at +20°C (+68°F)
- Float level: 1.38 to 1.40 V/cell
at +20°C (+68°F)
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Keep the battery clean using only
water. Do not use a wire brush or
solvents of any kind.
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Check torque of all terminal
screws. Coat with grease approved
by Saft or neutral vaseline all
terminal screws and connections.
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Voltage compensation
For use at temperature range
outside +10°C to +30°C (+50°F
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Saft
Industrial Battery Group
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Check charger settings. It is very
important that the recommended
charging voltage remains
unchanged. High water
consumption by the battery is
usually caused by improper voltage
setting of the charger.
Doc N° 21119-2-1010
12, rue Sadi Carnot
93170 Bagnolet - France
Tel: +33 1 49 93 19 18
Fax: +33 1 49 93 19 64
Société anonyme au capital de 31 944 000 €
RCS Bobigny B 383 703 873
www.saftbatteries.com
Pragma - Printed in France - 2k
Data in this document is subject to change without
notice and becomes contractual only after written
confirmation.
Table A:
Cell type
Rated
capacity
Charge
current
Ah
Amp
MRX 70
70
14
MRX 80
80
16
MRX 90
90
18
MRX 100
100
20
MRX 115
115
23
MRX 130
130
26
MRX 145
145
29
MRX 160
160
32
MRX 180
180
36
MRX 200
200
40
MRX 230
230
46
MRX 260
260
52
MRX 280
280
56
MRX 300
300
60
MRX 350
350
70
MRX 400
400
80
MRX 460
460
92
MRX 520
520
104
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Frequency of topping-up must be
determined for each battery.
Topping-up shall be performed
every 6 months during the first
year in order to determine the
ideal topping-up interval (generally
every 2 years). It depends on the
charging voltage and actual use of
the battery. Refer to section 7
concerning topping-up.
9. No change of electrolyte
required
Thanks to the sintered/plastic
bonded electrode technology, it is not
necessary to change the electrolyte
during the life of the battery.
10. Recycling
To protect the environment, all used
batteries must be recycled. Contact
your local Saft representative for
information.