
9
-2
Inverter Application Precautions
Selection
Observe the following precautions when selecting an Inverter.
Installing Reactors
A large peak current will flow in the power input circuit when the Inverter is connected to a large-capacity
power transformer (600 kVA or higher) or when switching a compensating capacitor. Excessive peak current
can destroy the converter section. To prevent this, install a DC or AC reactor to improve the power supply
power factor.
If a thyristor convertor, such as a DC drive, is connected in the same power supply system, connect a DC or
AC reactor regardless of the power supply conditions shown in the following diagram.
Fig 9.1
Power sup-
ply (kVA)
DC or AC reactor
required
DC or AC reactor
not required
Inverter capacity (kVA)
http://nicontrols.com
Summary of Contents for Varispeed L7
Page 3: ...http nicontrols com...
Page 55: ...2 30 http nicontrols com...
Page 129: ...4 62 http nicontrols com...
Page 197: ...5 68 http nicontrols com...
Page 219: ...6 22 http nicontrols com...
Page 243: ...9 14 http nicontrols com...