Mitsubishi Electric FATEC FR-A800 Manual page 99

7
REVIEW OF INSTALLATION ENVIRONMENT
Follow the procedure below to examine the necessity of the harmonic suppression techniques along
the "Harmonic Suppression Guidelines for Consumers Who Receive High Voltage or Special High
Voltage".
New specific consumer
New installation or addition/renewal
of harmonic generating equipment
Change in contracted power or
contract type
Calculation of equivalent
1)
capacity of each piece of equipment
equivalent capacities
of harmonic generating
equipment
2)
Calculation of outgoing
harmonic current
outgoing harmonic
3)
current equal to or lower
than the maximum
Approval of power supply by power supplier
7.1 Power supply of inverter (harmonics and instantaneous power failure)
94
Sum of
Equal to or lower than the reference capacity
Above the reference capacity
Is
value?
YES
Fig. 7.5 Harmonics examination flowchart
[Special case]
NO
4) Examination of
suppression technique
The guideline does not apply
to the newly added or renewed
equipment, where a current
smaller than the maximum
outgoing harmonic current flows,
or which has the harmonic
suppression capability equivalent to
that of a 12-pulse converter or better.