American Power Conversion MX28B4800 Power Supply User Manual


 
MX28B1200/2400 MX28B1200/4800 –48 VDC User’s Manual Page 56
a) DC Voltage Rating.
b) DC Current Rating
c) Interrupting Current Rating
Battery Visual and Safety Inspection
1. Check that the battery temperature probe is firmly attached to the battery.
2. Check the mechanical integrity of the battery framing, racking, or cabinet. Tighten where
necessary.
3. If there is a battery disconnect device fitted, ensure that it is properly connected and
protected.
4. Check the general appearance and cleanliness of the battery. Clean if necessary. Use
only approved cleaning materials.
5. Visually inspect each cell for the following, and clean and neutralize if necessary.
Document discrepancies on Site form accordingly.
a. Cracks.
b. Case leaks.
c. Post-seal leaks.
d. Pressure relief valve leaks (VRLA only).
e. Case swelling (VRLA only).
f. Terminal corrosion and connector corrosion.
6. Check the torque of all battery inter-cell connector in accordance with specifications. Re-
torque if necessary (annual only).
7. Measure and record ambient temperature.
7.3. Test
System Voltage Test
Verify with a voltmeter directly attached to the DC bus that the system voltage is correct. If the
voltage is off by more than 0.1V recalibrate the controller with the OEM/R Offset setting.
System voltage should also agree with the battery float voltage set up in the battery parameters
section. The system may be off because of battery temperature compensation or battery
recharging.
Rectifier Current Test
1. Insert voltmeter probe between I+ and common jack on front of each rectifier.
2. Record current for each rectifier using the formula – Voltage X 10amps/volt.
3. Rectifier current displayed under Rectifier/Info should agree with the recorded current.