Power Supply Capacity; Recommended Fuses - WEG SSW-07 Manual Del Usuario

3.2.4.1 Power Supply
Capacity
3.2.4.2 Recommended
Fuses
Chapter 3 - INStaLLatION aND CONNeCtION
ATTENTION!
The overvoltage control in the line that feeds the soft-starter must
be done using overvoltage suppressors with a clamping voltage of
680 Vac (phase-to-phase connection) and an energy absorption
capability of 40 joules (17 A to 200 A models) and 80 joules (255 A
to 412 A models).
NOTE!
Use the wire sizes and fuses recommended in tables 3.5 and 3.7.
The connector tightening torque is indicated in table 3.4. Use only
copper wires 70 °C (158 °F).
The Soft-Starter SSW-07 is suitable to be used in a circuit capable
of supplying not more than X (according to table 3.6) symmetrical
rms amperes, Y maximum volts when protected by ultra-rapid fuses.
SSW-07 Model
table 3.6 - Maximum current capacity of the power supply
High speed fuses must be used at the input, which will protect the
SSW-07 against short circuit. It is possible to use other protection
devices that will protect the installation; however, in that case the
SSW-07 will remain unprotected.
SSW-07 Model
17 A
24 A
30 A
45 A
61 A
85 A
130 A
171 A
200 A
255 A
312 A
365 A
412 A
table 3.7 - Recommended fuses
Y = 220-575 V
X (kA)
17 A 5
24 A 5
30 A 5
45 A 5
61 A 5
85 A 10
130 A 10
171 A 10
200 A 10
255 A 18
312 A 18
365 A 18
412 A 30
Nominal
Current
(A)
50
80
80
100
125
200
315
450
500
400
500
550
700
Maximum I t
2
(10 x A s)
3 2
0.57
3.2
3.2
6.4
8.4
40.9
77.6
134
196
72.5
190
190
256
19