CD Automation REVO RT, User Manual

Page: 55 / 56

REVO RT
from 35A to 90A
User’s manual
55
Caution: High speed fuses are used only for the thyristor protection and can not be used to
protect the installation.
Caution:
The warranty of thyristor is null if no proper fuses are used. See tab.
Warning: When powered, the thyristor unit is subject to dangerous voltages; disconnect
from the power supply before opening the fuse box and touching electrical equipments.
Internal fuses
The thyristor unit have internal fuse extrarapid at low I
2
t for the thyristor protection of against the short-circuits.
The Fuses must have I2T 20% less than thyristor’s I
2
t. The warranty of thyristor is null if no proper fuses are used.
Tipo
Codice fusibile
ricambio
Corrente
(A
RMS
)
Vac
Fusibile I
2
t
suggerito A2s
(a 500V)*
Fusibile I
2
t
suggerito A2s
(a 690V)
Quantità
per ogni
fase
035 FU5007306.50 50 690 546 780 1
050 FU5007306.80 80 690 1750 2500 1
075 FU5007306.100 100 690 2170 3100 1
090 FU5007306.100 100 690 2170 3100 1
*I
2
t are multiplied for K value in function of Vac, at
500V K is equal to 0,7 (es:3100 X 0,7 = 2170).
At 690Vac K is equal to 1.
Fuses replacement:
Open the cover and remove the screws, then replace
it with the correct fuse, use the screws with a proper
suggested torque indicated below.
Use correct screws M6 x 12 mm.
15
1.2
1.0
0.8
0.6
0.4
0.2
200 400 600 800
0.7
500
Vac
K
(Line voltage)
Type Screw
Torque Lb-in
(N-m)
30A-90A M6 44.2 (5.0)
8 mm
12 mm 8,6 mm
N° 2 M6x12mm for each fuse