ABB ACS880-7407LC, Руководство по оборудованию

Страница: 44 / 64

• Remove the bolts (a) that attach the lower fuse busbars (b) to the busbars of the DC
breaker switch. There are 6 bolts on the right and 6 on the left.
• Remove the bolts (c) that attach the the lower fuse busbars to the fuses from below.
• Pull out the lower fuse busbars.
a
c
b
6. Disconnect the cooling circuit of the DC breaker switch from the drive cooling system.
Drain the cooling circuit.
• Close the inlet stop valve (a) and outlet stop valve (b).
• Lead the drain hoses (c, on both side of the cubicle) into a suitable container.
• Open the drain valves (d, on both side of the cubicle) and drain the cooling circuit of
the DC breaker switch.
a
d
c
b
d
c
44 Maintenance