Fuji Electric frenic mini series, User Manual

Page: 241 / 269

App. C Japanese Guideline for Suppressing Harmonics for Customers Receiving High Voltage or Special High Voltage
A-17
App.
Table C.2 "Input Rated Capacities" of General-purpose Inverters Determined by the Applicable Motor Ratings
Applicable
motor rating
(kW)
0.4 0.75 1.5 2.2 3.7
4.0
5.5
200V Inapplicable inverter models 6.77
Pi
(kVA)
400V 0.57 0.97 1.95 2.81 4.61 6.77
(2) Values of "Ki (conversion factor)"
Depending on whether an optional ACR (AC reactor) or DCR (DC reactor) is used, apply the
appropriate conversion factor specified in the appendix to the guideline. The values of the
conversion factor are listed in Table A.3.
Table C.3 "Conversion Factors Ki" for General-purpose Inverters Determined by Reactors
Circuit
category
Circuit type
Conversion
factor Ki
Main applications
w/o reactor K31=3.4
•
General-purpose
inverters
w/- reactor (ACR) K32=1.8
•
Elevators
w/- reactor (DCR) K33=1.8
•
Refrigerators, air
conditioning
systems
3
3-phase bridge
(capacitor
smoothing)
w/- reactors (ACR and DCR) K34=1.4
•
Other general
appliances
Some models are equipped with a reactor as a built-in standard accessory.
(3) Exception to this guideline
Inverters whose inputs are 100V or 200V lines and capacities are 3.7 (4.0) kW or less are an
exception to this guideline.
Those excluded inverters are already regulated by the "Japanese guideline for suppressing harmonics
in home electric and general-purpose appliances" so that all of them are not regulated by this
guideline regardless of the quantity of the units used by a single customer.
[ 2 ] Calculation of Harmonic Current
(1) Value of "input fundamental current"
- When you calculate the amount of harmonics according to Table 2 in Appendix of the Guideline, you
have to previously know the input fundamental current.
- Apply the appropriate value shown in Table C.4 based on the kW rating of the motor,
irrespective of the inverter type or whether a reactor is used.
If the input voltage is different, calculate the input fundamental current in inverse
proportion to the voltage.
Table C.4 "Input Fundamental Currents" of General-purpose Inverters
Determined by the Applicable Motor Ratings
Applicable motor rating
(kW)
0.4 0.75 1.5 2.2 3.7
4.0
5.5
200
V
Inapplicable inverter models 19.1
Input
fundamental
current (A)
400
V
0.81 1.37 2.75 3.96 6.50 9.55
6.6 kV converted value
(mA)
49 83 167 240 394 579