VTS Medical Systems VTS2000 Series, Руководство пользователя

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VTS2000 Series frequency inverter
- 90 -
out
（
1
）
If the control terminal screws are loose, tighten them with a screwdriver.
（
2
）
Whether the main circuit terminals are in poor contact, and whether there are traces of overheating in the
connections of cables or copper bars, screws
。
（
3
）
Whether the power cable and control wire are damaged, especially whether the external insulation layer is
cracked or cut.
（
4
）
Whether the connection between the power cable and the cold-pressed connector is loose, and whether the
insulation explosion zone at the connection is aging or falling off.
（
5
）
Clean up dust on printed circuit boards, air ducts, etc., and take anti-static measures when cleaning.
（
6
）
For the insulation test of the inverter, you must first remove the power supply of the inverter and all the
connections between the inverter and the motor, and after all the main circuit input and output terminals are reliably
shorted with wires, then test the ground, please Use a qualified 500V megohmmeter (or the corresponding voltage range
of the insulation tester); do not use a faulty instrument. It is strictly forbidden to connect only a single main circuit
terminal to the insulation test, otherwise there will be a risk of damage to the transformer. Do not perform insulation test
on the control terminals, otherwise the inverter will be damaged. After the test is completed, remember to remove all the
wires shorting the loop terminals.
（
7
）
If the insulation test is performed on the motor, the wires between the motor and the inverter must be