Fuji Electric ALPHA7, User Manual

Page: 624 / 662

CHAPTER 15 STANDARDS COMPLIANCE
Complying with "Guideline for Suppressing Harmonics by Customers Receiving High Voltage or
Special High Voltage"
15-11
15
Three-phase input: Input rated capacity = √3 x (power supply voltage) x I1 x 1.0228/1000 (kVA)
Single-phase input: Input rated capacity = (power supply voltage) x I1 x 1.0228/1000 (kVA) Here,
1.0228 is the 6-pulse converter (effective value current)/(fundamental harmonic current) value.
The "input rated capacity" expressed here can be applied only if performing the
calculation indicated in the harmonic guidelines, and cannot be used to select servo
amplifier power supply side devices and wiring size, etc., and therefore caution is
required.

Refer to manufacturer catalogs or technical material for information on peripheral equipment
capacity selection.
Table15.4-2 Servo amplifier input rated capacity and fundamental harmonic input current
Motor rated capacity
[kW]
Input rated capacity
[kVA]
Fundamental harmonic input current [A]
Single-phase Three-phase
200 V 200 V
0.1 0.22 1.05 0.61
0.2 0.35 1.70 0.98
0.4 0.57 2.81 1.61
0.75 0.97 4.76 2.74
0.85 1.10 - 3.11
1.0 1.30 - 3.66
1.5 1.95 - 5.50
(2) Ki (conversion factor) size
The conversion factors in the guidelines appendix apply based on the optional ACR (AC reactor)
and/or DCR (DC reactor) usage status. The conversion factor sizes are shown in Table15.4-3.
Table15.4-3 Servo amplifier "conversion factor Ki" determined by reactor
Circuit class Circuit type Reactor Conversion
factor
3 Three-phase bridge
(capacitor smoothing) Not used 3.4
Used (AC side) 1.8
Used (DC side) 1.8
Used (AC, DC side) 1.4
4 Single-phase bridge
(capacitor smoothing) Not used 2.9
Used (AC side) 1.3