50 Chapter 4 Testing
NetSure 801 CA7 Power Supply System (New Skelecton) User Manual
Chapter 4 Testing
This chapter mainly introduces the notes on testing, system power-on, parameter setting, inquiry of alarm and
operation information. For detailed using of M831D controller, please refer to
M831D Controller User Manual
.
4.1 Notes On Testing
Before putting the system into operation, testing must be conducted strictly following the testing steps. The following
safety precautions must be observed in testing
The system test requires extensive technical knowledge; therefore the test engineers must have had relevant
technical training. Be sure the test is conducted in accordance with the instructions in this manual.
The system test involves working with live wires, therefore, during the test, stand on dry insulated objects, use
insulated tools, and do not wear watch, necklace or any other metal objects.
Avoid touching two live objects with different potentials.
Before the switch-on operation, check whether the conditions of appropriate parts are normal.
During operation, a warning sign “No switch-on, in operation” should be posted on the equipment to prevent
inadvertent operation.
Close observation is required during test. The system should be turned off immediately when any malfunction
occurs. The cause of the malfunction must be found out before resuming the operation.
4.2 Power-on
Inspection before power-on
The inspection steps as below:
1. Check that the earth cables of the cabinets are connected reliably and that the wiring and screws in the cabinet are
fastened.
2. Open all the MCBs in the AC distribution cabinet, and then feed the mains supply to the system, measure the
phase voltage of the three phases with a multimeter to confirm the mains condition. If everything is normal, proceed
with the next step.
3. Turn on the knife-blade switch or input air breaker of the AC distribution cabinet, the running indicator of the AC
distribution cabinet should illuminate.
4. Close the input MCB of the rectifier cabinet in the AC distribution cabinet, the power indicator of the rectifier cabinet
should illuminate.
Preliminary test of rectifier
After introducing the AC mains, turn on one certain MCB of rectifier in the upper part of the rectifier cabinet. The
power indicator of the corresponding rectifier should be on and the fan begins to run. After a while, the controller will
display 53.5V rectifier output voltage and then turn off the MCB of this rectifier. Check the other rectifiers one by one
through turning on and off the rectifier MCBs and see if they can work normally.
Preliminary test of controller
After the controller is powered on, it will do self test without needing any operation. After about 50s, the M831D
should start and display the following screen.