MERAWEX MXB Manual de usuario

VAT No.: PL6310000440

Raiffeisen Bank Polska SA O/Gliwice, Poland, 44-100 Gliwice, Dolnych Wałów 7

Account No. PL62 1750 1237 0000 0000 0319 0676, Swift RCBWPLPW

VAT No.: PL6310000440

Raiffeisen Bank Polska SA O/Gliwice, Poland, 44-100 Gliwice, Dolnych Wałów 7

Account No. PL62 1750 1237 0000 0000 0319 0676, Swift RCBWPLPW

Power supplies •Electronics

Development •Production •Contract manufacturing

Machining services fax +48 32 23 99 409

merawex@merawex.com.pl

MERAWEX Sp. z o.o.

44-122 Gliwice, Toruńska 8, Poland phone +48 32 23 99 400

www.merawex.com.pl

VAT No. PL6310000440 Reg. No. KRS 0000058433, court: Sąd Rejonowy in Gliwice, X Wydz. Gosp. KRS Equity: 1,150,000 PLN

Power supplies •Electronics

Development •Production •Contract manufacturing

Machining services fax +48 32 23 99 409

merawex@merawex.com.pl

MERAWEX Sp. z o.o.

44-122 Gliwice, Toruńska 8, Poland phone +48 32 23 99 400

www.merawex.com.pl

VAT No. PL6310000440 Reg. No. KRS 0000058433, court: Sąd Rejonowy in Gliwice, X Wydz. Gosp. KRS Equity: 1,150,000 PLN

MXB lead-acid batteries

Operating Instructions

1. General information

MXB batteries are manufactured in the VRLA technology (Valve Regulated Lead Acid) with one-way

valves and electrolyte contained in the glass mat of the separator - AGM (Absorbent Glass Mat). It

makes the maintenance operation easier and allows for their use in rooms with natural gravity

ventilation.

Meeting the procedures included in this Operating Instructions will allow for long and safe use of the

product. The MXB batteries meet all the requirements of the EN 60896-21: 2007 and

EN 60896-22:2007 standards for lead-acid batteries.

The optimum ambient temperature for MXB batteries is + 5°C ÷ + 35°C.

2. Health and Safety recommendations

An installer should have adequate training, tools and protective equipment such as protective glasses

and clothing, fire extinguishers. Particular care must be taken to comply with the warning symbols

and to avoid all non-insulated parts of the system to avoid the risk of burning with current.

In the case of overcharging and after the safety valves have been activated, the hydrogen released

from batteries creates explosive atmosphere with the oxygen contained in the air. Therefore, it is

important to use good ventilation, avoid open flames and often discharge static electricity from your

clothing by touching it against a grounded element.

3. Storage

Batteries should be stored in a dry and cool place away from sources of fire, heat and sunlight. Any

elevated temperature causes a battery to self-discharge, thereby reducing its service life and

deterioration of its parameters. The storing place should be clean and have properly functioning

natural gravity ventilation. Do not store batteries in damp places.

The storage temperature limit is between -15°C to + 50°C and the recommended one is -5°C to +

40°C.

Storage time affects self-discharge of the battery, so after that time, you should perform refresh

charging of the parameters listed in the table below.

Regardless of the time criterion, a voltage criterion applies - if the voltage drops below 2.1V/cell,

which corresponds to capacity drop of up to 60% of the nominal capacity, the refresh charging

should be applied.

Storage

temperature

Storage time

Parametry ładowania odświeżającego

< 30°C

6 months

- charging with voltage limitation to 2.36V/cell at temperature of

25°C

- charging with current limitation 0.1*C

- temperature compensation factor: - 3mV/°C /cell

- time of refresh charging - 10 hours

> 30°C

3 months

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4. Installation of batteries

Batteries should be installed by trained persons, authorized to install them. Before starting, please,

check whether the batteries and their connectors are not damaged mechanically. Please, leave 10-20

mm space between batteries to ensure their adequate ventilation. Do not place batteries in sealed

enclosures (without the possibility of ventilation) to avoid creating explosive atmosphere. Use

anticorrosion agents (e.g. technical petroleum jelly) on battery terminals. Tighten the screws with a

torque wrench - torque according to the table below.

It is recommended to install the batteries with clamps up.

It is not advisable to install the batteries in reverse position (clamps down), as charging may result in

leakage of the electrolyte if the control valves are tripped.

Screw

Tightening torque

2.0~3.0N*m

3.9~5.4 N*m

11~14.7N*m

5. Charging

General

This part of the Operating Instructions includes the most frequent ways of charging and their

parameters:

bulk charging,

charging at floating mode voltage (conservation charging after batteries are fully charged),

The other ways of charging have been described in other, corresponding parts of the Operating

instructions.

It refers to:

refresh charging (part 3),

equalizing charging (part 6),

charging at cycle mode (part 7),

return charging (part 8).

Note 1.: Deep discharge causes the plates to sulphate and damage in a form of irreversible loss of

part of the capacity or even destruction of the battery. The battery should be charged as soon as

possible - ideally according to the criteria of the equalizing charging described below or if time

permits the return recharging.

Note 2.: Leaving the battery in a state of deep or full discharge at negative temperatures can freeze

the electrolyte, which can result in cracking of the enclosure.

Temperature charging range

Charging can be realized within the range of 0÷40°C (exceptionally within the range of 0÷50°C).

Attention: Increasing the charging temperature (generally operation temperature) of a battery by

every 10°C above 25°C results in decreasing the battery lifetime twice.

For this reason, it is necessary to avoid operating batteries at elevated temperatures, and use them

in such the temperatures only occasionally.

MERAWEX Sp. z o.o.

44-122 Gliwice, Toruńska 8, Poland

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Range of charging voltage

Charging should take place with the thermal compensation of the voltage across the full temperature

range. Regardless of temperature, the maximum voltage during charging should not exceed

2.4V/cell.

The minimum battery charging voltage in each case should not drop below 2.2V/cell regardless of

temperature.

Range of charging current

For the MXB batteries, the maximum charging current is 0.25*C (rated capacity of the battery). High

charging current of the batteries, especially if accompanied by elevated temperature, can lead to

"thermal overload" which results in overcharging, overheating and deformation of the battery case.

Note: For the MXB batteries, the recommended charging current is 0.1*C.

Variable components of voltages and charging currents

Excessive variable components of voltages and charging currents can cause damage and reduce

battery life. Consequently, the variable component of the charging current should be limited to a

maximum of 0.05*C and the voltage variable component in the current range of 5...100% at resistive

load (this applies to a power supply without a battery connected) should be limited to 1% of the

rated voltage of the battery.

Recommended parameters of bulk charging:

- maximum charging current limited to 0.1*C

- bulk charging voltage: 2.36V/cell at 25°C,

- voltage temperature compensation factor: - 3mV/°C/cell,

- bulk charging should be interrupted when, after reaching the voltage indicated above, the battery

current falls below 25% of the maximum charging current or the charging time exceeds 10 hours.

The second case indicates a battery failure. It is advisable to discharge the battery then and

recharge it. If after 3 such the cycles, the battery is not fully recovered, please, replace the

damaged battery with a new one.

Recommended charging parameters at floating mode voltage:

- maximum charging current limited to 0.1*C,

- floating mode voltage: 2.28V/cell at 25°C ,

- temperature compensation factor: - 3mV/°C/cell,

Charging the MXB batteries at the floating mode voltage should be considered terminated if the

current falls below 0.01*C (10mA/1Ah). It is possible to maintain the floating mode voltage further.

In this case, we are dealing with conservation charging, which compensates for the loss of battery

charge due to self-discharge. When operating in such the state for a long time, the battery charging

current generally drops to about 5mA/1Ah.

6. Equalizing charging

The equalizing charging should be used for batteries in serial connection, operating for long time in

the floating mode. Not less than once a year and no more than once every 3 months.

Recommended parameters of equalizing charging:

- charging current limited to 0.1*C,

- equalizing charging voltage 2.36V/cell at 25°C,

- voltage temperature compensation factor: - 3mV/°C/cell,

- maximum time of equalizing charging, after which you need to go into the floating mode, is 10h.

MERAWEX Sp. z o.o.

44-122 Gliwice, Toruńska 8, Poland

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7. Cycle operation

If the battery is the primary power source, its operation is called the cycle operation, during which

the cycles of discharging / charging are repeated.

Recommended charging parameters at the cycle operation:

- charging current limited to 0.1 ÷ 0.25*C,

- charging voltage at the cycle operation: 2.40 ÷ 2.50V/cell at 25°C ,

- temperature compensation factor: - 5mV/°C/cell.

8. Discharging

The VRLA batteries are sensitive to low discharge voltage. Too deep discharge causes the battery

panels to sulphate and this translates into the reduced service life, reduced capacity and thus

reduced energy storage capacity.

Discharge can take place in the temperature range of -20 ÷ + 55 ° C.

The final discharge voltage should be limited according to the discharge time associated with the

discharge current according to the table below.

Final discharge voltage

(shut-down voltage)

Discharge time

1.60V/cell

below 30min.

1.65V/cell

from 30min. to 1h

1.70V/cell

from 3 to 5h

1.75V/cell

for 8h

1.80V/cell

from 10 to 20h

After reaching the final discharge voltage of the battery, please, stop the discharging process and

resume charging in a short time according to the parameters listed below.

Note: The parameters listed below do not apply to charging in the cycle mode.

Recommended parameters of return charging after discharging to final voltage:

- charging current limited to 0.1*C

- charging voltage 2.36V/cell at 25°C,

- voltage temperature compensation factor: -3mV/°C /cell,

- maximum time of return charging, after which you need to go into the floating mode, is 10h,

- recommended total time of return charging –up to 72h, the minimum time is 24h.

9. Maintenance

The VRLA batteries do not require periodic refilling of the distilled water. The surface of the battery

must be dry, clean and free from dust. The battery case, throughout its life, should be cleaned with a

cotton cloth dampened with water without detergent. Avoid contact with the terminals. It is not

allowed to clean the batteries with such the substances as petrol or solvent.

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10. Battery checks

In order to prolong the life of the batteries, you should check them periodically during their

operation. It is recommended to perform a check of the battery installation at least once a year. It is

recommended to run a book of operation, start and check protocols, in which there will be recorded:

measured values during installation and checks, power outages, and other notes observed during the

battery operation. All records and protocols made during start, operation and check should be

submitted in the event of a possible warranty claim.

Scope of actions when starting installation –according to the start protocol:

Visual inspection of the batteries, whether they do not have any visible mechanical damage

caused during transport,

Checking correctness and reliability of cable connections,

Setting charging parameters according to requirements (Technical Data Sheet, Point 5. of

Operating Instructions –Charging),

Measurement of voltages of individual batteries in the battery during floating mode (voltage,

charging on individual batteries should be within the limits described in the Operating

Instructions - Point 5. Charging, charging parameters),

Battery operation test,

Voltage measurement on individual batteries during battery operation,

Measurement of the voltage and current of the conservation charge of each serial branch and

comparison with the recommended values,

Resistance measurement of battery earthing insulation.

Sample scope of activities during the annual check:

Checking if the battery is free from damage, leaks and bulges and that it is not dirty,

Checking battery terminals for corrosion. If necessary, cover them with silicone grease or

technical vaseline, then tighten to the appropriate torque so that they are not loose.

Checking correctness and reliability of cable connections,

Battery operation test (discharging),

Measurement of the voltage and current of the conservation charging of each serial branch and

comparison with the recommended values,

Measurement of voltages of individual batteries in the battery during floating mode (voltage,

charging on individual batteries should be within the limits described in the Operating

Instructions - Point 5. Charging, charging parameters),

Voltage measurement on individual batteries during battery operation,

Measurement of internal resistance of individual batteries,

Resistance measurement of battery earthing insulation,

It is recommended to carry out the equalizing charging during an annual check.

Environmental protection and recycling

The used batteries must be disposed of in accordance with the provisions of the "Batteries and

Accumulators Act" of 24 April 2009 (Journal of Laws of 2009, No. 79, item 666) as amended on 3

October 2014 (Journal of Laws, No. 1322) . They are airtight (equipped with unidirectional self-

sealing valve), maintenance-free lead acid, VRLA batteries, classified according to the industrial

batteries category, which, after use, are hazardous waste of the code 16 06 01* (Regulation of the

Ministry of Infrastructure of 27.09.2001 on the waste catalog - Journal of Laws 2001 No. 112 item

1206).

25.05.17

MXB Lead-acid batteries Operating Instructions v 1.1 EN

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