URT
URT
5. Applications 5.1 SIBA U ltra- R apid Fuse Links In Rectifier Circuits The most common rectifier circuits are shown in table 5.1. The operating currents and operating voltages are coordinated with the individual circuits. Given are the coefficients for: • Operating current of a phase fuse link as a multiple of the D.C. load current. • Operating current of a fuse link placed at the inverter branch as a multiple of the D.C. load current. • Maximum value of the rectifier voltage as a multiple of the transformer voltage. • Operating voltage of the fuse link as a multiple of the floating voltage.
Fusing Location
Circuit Phase
Type
Code
Branch U AC /U 2
I RMS /I DC
I RMS /I DC
U fuse /U DC
Single Phase
1.00
0.50
1.41
Phase Full Wave Single Single Phase Half Wave
M1
1.57
1.57
1.41
2.22
M2
0.71
0.71
2.83
2.22
Single Phase
B2
1.00
0.71
1.83
1.11
Six Phase
M6
0.41
0.41
2.50
1.48
Six Phase
B6
0.82
0.58
2.50
0.74
Six Phase SD6
0.29
0.29
2.50
1.48
Twelve Phase SD12
0.14
0.14
2.50
1.48
Fig. 5.1 Cont. - Circuits for power semiconductors and appropriate calculation coefficients
portal: www.siballc.net e-mail: info@sibafuse.com
200
Made with FlippingBook - Online magazine maker