Tripp-lite Extended-Run Single-Phase Battery Cabinet User Manual download pdf (Page 9)

4. Operation and Charging

4.1 Determine Charging Voltages

4.2 Initial Charge

4.3 Operational Check

4.4 Acceptance Test (Optional)

To determine the appropriate equalization (freshening) charge voltage and oat charge voltage, multiply the number of batteries

connected in series in the battery cabinet by the recommended charging voltage per unit.

For example:

A +/- 240 VDC cabinet containing 40 each of the UPS12-400MR batteries in series would use the following charging voltages:

Freshening/Equalization Charge Voltage = 20 x 14.4 VDC/unit average= +/- 288 VDC

Float Charge Voltage = 20 x (13.5 to 13.8 VDC/unit average) = +/- 270 to 276 VDC

Note: Some battery cabinets may contain more than one series string connected in parallel within the cabinet. The calculation for

properly charging the battery cabinet should follow the procedure above, considering the number of batteries in a single series string.

After the correct charging voltages have been calculated, follow these steps:

Adjust the charger/rectier equalization and oat voltage outputs to the appropriate level.1.

Place the charger/rectier in equalization mode,2.

Close the disconnect switch/circuit breaker connection from the charger/rectier to the battery cabinet(s) and start a 24-hour 3.

freshening charge at the equalization charge.

After a few minutes on charge, monitor the voltage across several of the individual batteries to assure they are charging at the 4.

proper value.

Following completion of the freshening charge, place the charger/rectier in oat charge mode.5.

After the battery cabinet has been on oat for 1 to 24 hours, complete the operational check (6. Section 4-3).

Measure and record the total system oat voltage. Measure at the battery terminals.1.

Measure and record the system oat current using a clamp-on ammeter.2.

Measure and record the oat voltage of individual battery units.3.

Measure and record the temperature of several of the batteries. (Measure battery temperature with a digital thermometer by 4.

placing the surface thermocouple on the at surface of the negative terminal—not the “L” connection surface. An infrared

temperature monitor can also be used.)

Optional: Perform impedance and conductance tests on individual battery units. These tests require special equipment, but 5.

the data can be useful in trending the system over time or identifying suspect units during later periodic checks. It may be

necessary to disconnect the battery system from the charger/load during these checks.

If the acceptance test is being performed, proceed to 6. Section 4-4. If the acceptance test is not being performed, reinstall the

cabinet’s access panels. The battery cabinet is now in operation.

Remove the battery cabinet’s access panels to access internal components. Use a digital voltmeter when voltage 1.

measurements are required.

Determine the discharge rate (e.g. 15 seconds, 5 minutes, 15 minutes) at which the battery is to be tested.2.

Select a battery from the center of the battery cabinet and measure the temperature at the at surface of the negative terminal. 3.

If the temperature is below 74° F or above 80° F, the test load should be temperature compensated accordingly.

Review the nal check data and assure that all unit oat voltages are acceptable.4.

During the acceptance discharge test, monitor the cabinet system output voltage at the cabinet, the output current and 5.

discharge time as a back-up to monitoring at the critical load.

Run the test in accordance with the IEEE standard.6.

Reinstall the cabinet’s access panels. The battery cabinet is now in operation.7.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Comments to this Manuals

No comments

Tripp-lite Extended-Run Single-Phase Battery Cabinet User Manual Page 9

Comments to this Manuals

Related products and manuals for Tools Tripp-lite Extended-Run Single-Phase Battery Cabinet