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Magnum VS –48 Vdc User’s Manual Page 49
3. Remove the second rectifier and verify that you get a Major alarm for Rect 2 of n failure
on the controller and the customer remote alarm panel.
4. After the fan has completely stopped spinning, insert a plastic pen or plastic screwdriver
into the fan blade of one of the rectifiers and reinsert both rectifiers
5. Verify that you get the fan fail alarm on controller and the customer remote alarm panel.
6. Remove the fan fail device.
System Temperature Test
Verify that the system temperature is correct.
Battery Current Test
1. Measure the battery current with a clamp-on meter.
2. Verify that the battery current is below 5 A.
3. Verify that the displayed battery current is within + 5 A.
4. Determine the total battery capacity at the site:
Cells connected in series make up a string, and the capacity is determined by the
capacity of a single cell. Add Ah capacity for all strings connected in parallel.
5. Determine the Max. Batt. Recharge rate:
Divide Total battery capacity by 20 hours and enter it in the appropriate box on the Site
Form.
6. Verify that the Max. Batt. Recharge rate is set to the calculated value.
7. Remove ac power to the rectifiers purposely causing the battery discharge alarm to come
on.
8. Verify that the System Current is 0 + 5 A.
9. Verify that the battery current is within 5 % of the system current recorded previously.
10. Restore ac power to the rectifiers.
Battery Temperature Test
If the battery temperature probe is used in this system, verify that the battery temperature is
correct.
LVD Test
1. Ensure that the LVD parameters are set to proper values.
2. Record the LVD trip point.
3. To test the LVD function, set the LVD Trip to –56.00 Vdc.
4. The LVD should have dropped out (opened). Verify it by monitoring the voltage at the
battery connection.
5. Verify that the LVD Open Alarm is registered on the controller and at the customer
remote alarm panel.
6. Reset the LVD Trip to the original setting.
7. Verify that the LVD Open Alarm has been removed.