YASKAWA GA800 Series, Техническое обслуживание и устранение неисправностей

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Electrical
Installation
5
5.12 Improve the Power Factor
YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting 415
5.12 Improve the Power Factor
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Connect an AC Reactor or a DC Link Choke
AC reactors and DC link chokes decrease surges in current and improve the power factor on the input side of the
drive.
Connect an AC reactor or a DC link choke the input side (primary side) in the these conditions:
•
To decrease harmonic current or improve the power factor of the power supply
•
When there is switching of phase advancing capacitor
•
With a large capacity power supply transformer (600 kVA or more).
Note:
•
You can use an AC reactor and DC link choke together.
•
When you connect a thyristor converter (for example, a DC drive) to the same power supply system, use an AC reactor.
• The main circuit terminal block for the drive, and the terminal blocks for the AC reactor and DC Link Choke come in different shapes. The
drive has a European-style terminal block, and the AC reactor and DC Link Choke have a circular terminal block. Correctly prepare the
ends of the wiring.
• Ground the AC reactor and DC Link Choke (option) on the back of the mounting base. Remove all paint from the mounting surface of the
control panel.
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Connect an AC Reactor
Note:
When you connect an AC reactor to the output side (secondary side) of the driver, set C6-02 = 1 [Carrier Frequency Selection = 2.0 kHz] .
A - Power Supply
B - MCCB C - AC reactor
D - Drive
Figure 5.89 AC Reactor Connection Example
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Connect a DC Link Choke
When you install a DC link choke, remove the jumper between ter1 and +2. If you will not use a DC link
choke, do not remove the jumper. Refer to
Figure 5.90 for an example of how to wire the DC link choke.
A - Power supply
B - MCCB C - Drive
D - DC link choke
Figure 5.90 DC Link Choke Connection Example