Fuji Electric RHC-D 690V Series, Manual

Page: 148 / 175

9.8.3 Specifications
Control specifications
Item Specifications
Applicable converter
capacity
MD spec. (up to 1,350kW: 3 multiplex), LD spec. (up to 1,350kW: 3 multiplex)
Parallel control method AVR constant control with DC ACR minor
Output voltage Fixed 1073 VDC
Carrier frequency 2.5kHz
Input power 575 - 600 V, 660 - 690 V 50Hz/60Hz * The capacity must be reduced if less than 690 V.
Input power factor Approx. 0.94 (30% load or higher)
Input harmonic current
The METI harmonic suppression countermeasure guidelines state that the scale factor Ki
can be 0.
Restart following
momentary power
interruption Shields the gate when the voltage level drops to the undervoltage level if a momentary
power failure occurs. And restarts the converter automatically when the power is
restored.
Control function Slave units have partial functional restrictions.
D
ed
icat
ed
f
unc
ti
o
ns
Hardware
settings
Parallel
system
settings
Sets optional applications.
The parallel system setting is (SW2-1=ON, SW2-2=OFF).
Station
address
setting
Optional hardware switch SW1
SW1=0: master
SW1≠0: slave, standard slave 1 is set to "1", and slave 2 is set to "2".
Code
settings
Parallel
system
Parallel/single system switching is performed with function code H12 "Parallel system".
0: Parallel system disabled (factory default)
1: Parallel system enabled
When set to function code H12 = "Parallel system enabled", dynamic parallel/single
system switching is possible with digital input signal [OPT-DI].
Slave
qty
setting The number of optically linked slave units is set with function code H13 "No. of parallel
system slave stations". With a two unit parallel system, for example, the number of slaves
will be "1".
Main circuit non-insulation system parallel system
specifications
The optical link option is applied to multiple
converters, control is synchronized across each
converter, and load current sharing is controlled.
If using a common connection for DC circuits at the
converter output side, there is no need for an isolation
transformer at the main power supply side, enabling
transformer-less connection of the primary side of
each converter.
One of the features of parallel systems is that they are
compatible with large-capacity loads greater than the
single unit capacity.
Master
(RHC-69DE)
Slave 1
(RHC-69DE)
Slave 2
(RHC-69DE)
P,N P,N P,N
Inverter power supply
OPC-
VG7-SIR
R,S,T R,S,T
OPC-
VG7-SIR
R,S,T
OPC-
VG7-SIR
RHF RHF RHF
9-55