Precautions On Use - Sanken SVCO6 Instruction Manual

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Precautions on Use

1. Use the product in a location satisfying the standard environmental specifications (temperature,
humidity, vibration, dust, water drop, and toxic gases etc.).
2. Before starting up the product for the first time, carefully check the wiring. Make sure that the power
cable (input) and motor cable (output) are connected correctly. Otherwise, the inverter will be damaged.
3. Since the ambient temperature of the installation location greatly affects the life of the inverter, it is
recommended to lower the ambient temperature before operation.
4. When installing the product in an enclosure, check the closure size and ensure sufficient ventilation.
5. Capacitors and surge suppressors used for improving the inverter's output power factor may be heated
or even damaged because of high-order harmonic components output by the inverter. In addition, when
current overload occurs in the inverter, over-current protection action will be automatically executed.
Therefore, please do not connect capacitors and surge suppressors at the output side of the inverter. To
improve power factor, install the DC reactor at the DC side or AC reactor at the primary side (i.e. input
end) of the inverter.
When implementing a megger test, follow the method given in this instruction manual (10-4 ―Megger
6.
Test.‖).
7. When using earth leakage circuit breaker protection switch, select a product for corresponding
high-order harmonic and surge.
8. Please connect directly in principle between the inverter and motor. If you have, such as using a
transformer between the inverter and motor, there is a possibility that an excessive current flow, such as
an inverter / motor may be damaged.
9. Avoid inserting a electromagnetic contactor between the inverter and the motor. If the electromagnetic
contactor is turned on and off while the inverter is operating, an excess current will be generated.
10. Select larger capacity since the operating characteristics of full electromagnetic-type MCCB changes
with higher harmonic current.
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2-3 Precautions on Use