Emerson SP3402 - Common DC Bus Fusing

Safety
Information
Introduction
Product
information
System
design
Mechanical
installation
Electrical
installation
Getting
started
Optimisation Parameters
Technical
data
Component
sizing
Diagnostics
Unidrive SP Regen Installation Guide 193
Issue Number: 2 www.controltechniques.com
Table 10-18 SPMC / U input current, fuse and cable ratings
10.3.2 Common DC Bus Fusing
DC bus fusing is required in the following systems for both the regen and
motoring drives, and the SPMC if used as the external soft start circuit.
1. Single regen, multiple motoring drives
2. Multiple regen, multiple motoring drives
3. Unidrive SP regen brake resistor replacement
4. Regen systems using an SPMC
DC bus fuses as detailed following must be fitted in both the positive and
negative branches of DC Bus connections to each of the regen and
motoring drives, and the SPMC if used as the external soft start circuit.
Ferraz have a range of DC fuses which could be used to provide the
required protection, types (00 and 21) may be used.
00 - Fuse with no trip indicator fitted
21 - Fuse fitted with trip indicator
The DC Bus voltage set-point on a regen system (default) is set to
700Vdc, this can be up to a maximum 800Vdc. Therefore ensure the
selected DC Bus fusing is of the correct voltage rating with regards to
the DC Bus voltage level (Pr 3.05 DC Bus Voltage Set-point).
Model
Typical input
current
A
Maximum
input current
A
Typical DC
current
Adc
Semi-conductor fuse
in series with HRC fuse
Cable sizes
AC input DC output
HRC IEC
class gG UL
class J
Semi-
conductor
IEC class aR
mm
2
AWG
mm
2
AWG
SPMC1402 339 344 379 540 400 2 x 120 2 x 4/0 2 x 120 2 x 4/0
SPMC2402 2 x 308 2 x 312 2 x 345 450 400 2 x 120 2 x 4/0 2 x 120 2 x 4/0
SPMU1401 207 210 222 250 315 2 x 70 2 x 2/0 2 x 70 2 x 2/0
SPMU1402 339 344 379 540 400 2 x 120 2 x 4/0 2 x 120 2 x 4/0
SPMU2402 2 x 339 609 2 x 379 450 400 2 x 120 2 x 4/0 2 x 120 2 x 4/0
SPMC1601 192 195 209 250 250 2 x 70 2 x 2/0 2 x 120 2 x 4/0
SPMC2601 2 x 170 2 x 173 2 x 185 250 250 2 x 70 2 x 2/0 2 x 120 2 x 4/0
SPMU1601 192 195 209 250 250 2 x 70 2 x 2/0 2 x 120 2 x 4/0
SPMU2601 2 x 170 2 x 173 2 x 185 250 250 2 x 70 2 x 2/0 2 x 120 2 x 4/0
NOTE
NOTE