44 Digitax ST Installation Guide
Issue: 7
5.1.5 Maximum continuous output current
The drive models are listed as having the maximum continuous output currents (FLC)
shown in Table 5-1 and Table 5-2 (see the User Guide for further information).
Table 5-1 Maximum continuous output current (200 V drives)
Table 5-2 Maximum continuous output current (400 V drives)
5.1.6 Common DC bus
The drive can also be used with common DC bus for UL applications as follows: -
Drives can be connected so as to have a common DC bus from a single feed. The
power rating of the main fed drive shall not be exceeded. Fusing is not required
between the DC bus fed drives, only the main supplied drive is required to be fused (for
fuse values see Table 4-2). The maximum capacitance to be connected together for the
480 Vac drives is 880 μF and for the 230 Vac drives is 2200 μF (the capacitance
includes the mains supplied drive).
5.1.7 DC Supplied drive
The drive can also have DC feed for UL applications as follows: -
Supply connected to -DC and +DC terminals.
Table 5-3 DC fusing
Model FLC (A)
DST1201 1.7
DST1202 3.8
DST1203 5.4
DST1204 7.6
Model FLC(A)
DST1401 1.5
DST1402 2.7
DST1403 4.0
DST1404 5.9
DST1405 8.0
Model
Volts DC
nominal
Fuse
current
rating
R/C JFHR2 fuse manufacturer, type, Amps
DST1201 340 25 Ferraz, 6,9xx CP GRC, 25 Siba URZ14x51 gR 690, 25
DST1202 340 32 Ferraz, 6,9xx CP GRC, 32 Siba URZ14x51 gR 690, 40
DST1203 340 40 Ferraz, 6,9xx CP GRC, 40 Siba URZ14x51 gR 690, 40
DST1204 340 50 Ferraz, 6,9xx CP GRC, 50 Siba URZ14x51 gR 690, 50
DST1401 680 25 Ferraz, 6,9xx CP GRC, 25 Siba URZ14x51 gR 690, 25
DST1402 680 25 Ferraz, 6,9xx CP GRC, 25 Siba URZ14x51 gR 690, 25
DST1403 680 25 Ferraz, 6,9xx CP GRC, 25 Siba URZ14x51 gR 690, 25
DST1404 680 25 Ferraz, 6,9xx CP GRC, 25 Siba URZ14x51 gR 690, 25
DST1405 680 25 Ferraz, 6,9xx CP GRC, 25 Siba URZ14x51 gR 690, 25
In the table above, Ferraz xx may be 00 (fuse with no trip indicator installed) or 21 (fuse
installed with trip indicator).
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