Chapter 3 Testing 37
ECM3 Series Outdoor Power System User Manual
Chapter 3 Testing
This chapter introduces the testing after installation. The corresponding safety rules shall be adhered to in the testing.
3.1 Power-on
Note
1. Test the power subrack (if configured) in the cabinet at the very beginning.
2. Before test, inform the manufacturer representative. Only trained electrical engineers shall conduct the test.
3. Remove any metal objects that may cause short-circuit, including finger rings, watches, and so on.
During operation, Watch out for hazardous voltage and avoid personnel injury and property loss. The power system
must be properly earthed before power-on. Installation check (see Table 2-6) must be conducted before test.
If a power subrack is configured in the cabinet, you must connect cables according to the user manual of the power
subrack, and set battery capacity and charge/discharge management parameters according to actual situation.
Modify the default charge/discharge parameters if they are against battery manufacturer regulations. After the power
subrack is tested, you can start to test the cabinet system.
Startup preparation
Check item
OK
Comments
Ensure that the system AC input and DC input are normal, all AC input MCBs, battery MCBs and load
MCBs are switched off, and all devices are properly installed
Measure the AC input voltage. Make sure that the input voltage is within the rated input range. For the
system configured with an air conditioner, you need to confirm the AC input range: 220Vac ~ 230Vac/50Hz
Umin
＝
V
If batteries are connected, measure with a voltmeter across the connection points of each battery and make
sure that the polarity is right. For a lead-acid battery with 24 cells, the voltmeter should read 2.0 ~ 2.1V/cell
or 48V ~ 51V/battery string. If the voltage of certain cell is lower than 2.0V, that cell must be replaced
Umin
＝
V
Check with an ohmmeter that there is no short circuit between the positive & negative DC terminals (Note:
Pull out all modules before the check and restore them after the check)
Startup
Check item
OK
Comments
Switch on the system AC input MCB. The run indicator on the rectifier will be on and the fan will start
running after a certain delay. The controller will show that the output voltage is 54.0V
Check the system voltage and busbar polarity with a voltmeter. The voltage difference between the
measured value and displayed value should be less than ±0.3V
Close the MCB of thermal control unit
3.2 System Operation Status Check
Check item
OK
Comments
Make sure that the temperature of internal cabinet is the same as that of the actual value. Hold the probe of
the temperature sensor with hands, which should display the change of the temperature
For thermal control unit of heat exchanger type, check if the internal fan runs normally and if the external fan
runs or stops normally according to thermal control logics
For thermal control unit of air conditioner type, check if the air conditioner runs or stops normally according
to thermal control logics
When the door is open, the light will be illuminated and there should be no other alarms except door open
alarm (if the micro switch is selected)