East EA990G5, Руководство по обслуживанию

Страница: 76 / 77

72
7 Test
This chapter mainly introduces how to test the UPS after maintenance.
7.1 Boards installation
After the maintenance of the abnormal board is completed, it needs to be installed on the whole machine for
debugging to confirm whether the single board is fixed.
Please install the repaired board on the whole machine according to the content in Chapter 5, and ensure that
the installed position is correct and the wiring is correct.
7.2 Preparation before power-on
1>Check and confirm that the veneer inside the machine is well installed.
2>Check and confirm that the internal wiring of the machine is correct.
3>Check whether the connection of the cable is tight.
4>Check that the polarity and sequence of the DC source input cables are correct.
5>Check whether all wiring is neat, whether there is looseness, and whether the binding of cables meets the
process specifications.
6>Check whether the grounding is reliable.
7>The operator must wear insulating shoes.
7.3 Power-on and testing
Step 1: Set the output voltage of the AC source to the rated input of the machine (220V/50Hz or 60Hz) and
limit the output current to 10A.
Step 2: Close the bypass circuit breaker, and after the UPS is powered on and the display screen is lit, use the
IServiceTool II monitoring software to check whether the parameters on the "parameter display" and "parameter
setting" interfaces are normal; (if it is a rack-mounted machine, skip this step)
Step 3: Close the main circuit input breaker of the machine, wait for the UPS to automatically start the
rectifier and inverter, and run in the mains inverter mode. If it is a rack-mounted machine, check the parameters of
the "parameter display" and "parameter setting" interface in this step.
Step 4: Close the positive and negative battery breaker, connect the battery pack to the UPS, and check
whether the battery voltage displayed by the UPS is normal at this time. After waiting for two minutes, measure
the battery current through the LCD panel to check whether the positive and negative battery packs start to charge;
Step 5: Click "Control" -> "Maintenance" -> "Battery Test 1" on the screen (password login is required) to
test the battery self-test mode. After the test is completed, the UPS will switch back to the mains inverter mode.
Then, click "Control" on the screen -> "Switch" -> "Disconnect output", turn off the UPS; and open the main
circuit input circuit breaker, bypass circuit breaker and battery pack circuit breaker respectively.