Fuses
Instruction handbook
b maXX
BM4400, BM4600, BM4700
Document No.: 5.12008.07
Baumüller Nürnberg GmbH
292
11.2
11.2.7 Fuses BM447X
m
Semiconductor fuses aR (device)
BM447X, design type NH
BM4472:
BM4473, BM4773:
DANGER!
Danger to life from electric current!
Parts, which are under tension are perilous. Damage in isolation or damage of single
parts can be can be highly dangerous.
Therefore:
The use of semiconductor fuses is obligatory at the power supply connection of
BM447X devices. Semiconductor fuses are required in the connection between
brake resistor and device except the user assures the short-circuit protection of re-
sistor and cable.
Siemens
2 500A/1000V: 3NE3 334-0B
u
560A/1000V: 3NE3 335
u
710A/900V: 3NE3 337-8
u
Size
NOTE
The 710 A fuse is recommended if the BM4472 is operated constantly at rated power
and/or peak power is required frequently, because the 710 A fuse provides higher
thermal reserve compared with 500A/560A fuses and therefore the risk of fuse trip-
ping at normal run (without real error) is reduced.
Siemens
2 800A/800V: 3NE3 338-8
u
Size
Summary of Contents for b maxx BM4400
Page 359: ......
