MV510 series high-voltage inverter maintenance manual
9
Meter
Is the indication value normal?
HMI
The touch screen displays whether it is clear
and whether characters are missing
？
Whether there is abnormal sound or
abnormal vibration
？
Is the bolt loose?
With or without deformation damage?
Whether there is discoloration caused by
overheating?
Whether there is adhesion to dust or dirt?
Periodic inspection
The periodic inspection of our medium-voltage inverter is shown in Table 2.2.
Under normal circumstances, it is recommended to conduct regular inspections
every 1 to 2 years, but please determine the actual inspection frequency in
combination with the actual use and working environment of each inverter.
Regular inspections help prevent medium-voltage inverters from functioning and
product damage. Please copy the checklist for use. After each confirmation, put a
“confirmation” stamp on the check box.
Regular maintenance inspection general steps
(1) Cut off all power supplies of the medium-voltage inverter: cut off the main
power and control power of the medium-voltage inverter,
UPS power off;
(2)Wait for more than 15 minutes, confirm the implementation of item (1),
and confirm the discharge of the power cell;
(3)Confirm that the switch has been reliably disconnected and grounded;
(4)Open the medium-voltage inverter cabinet door and check the inspection
item list item by item (refer to the periodic inspection table);
(5)Confirm maintenance inspection work;
(6)Confirm that the maintenance work is completed;
(7)Confirm that the power supply is connected correctly and reliably;
(8)Confirm that the tools are not in the cabinet;
(9)Close and lock the door, re-power on, and confirm the maintenance;
(10)Fill in the maintenance inspection report and file it.
Regular inspection
Danger: To prevent electric shock
Do not perform inspections while the main circuit power supply and control
power are on.
Otherwise there is a danger of electric shock.
Please turn off the power of all devices before checking. Even if the main
circuit power supply is cut off, there is residual voltage in the capacitor inside the
medium voltage inverter. Wait for more than 15 minutes after turning off the
power.
