ABB ConVac Installation And Operation Instruction Manual page 30

30 C O N V A C V A C U U M C O N T A C T O R I N S T A L L A T I O N A N D O P E R A T I O N I N S T R U C T I O N
—
Fig 7g
—
Fig 7h
—
Fig 7j
• Mounting the fuses
Open the locking rings with special tools.
Fully insert the fuses with the contacts fitted
with striker on the opposite side to the isolating
contacts of the contactor (Fig 7k). Close the
locking rings again, moving them in the opposite
direction to the opening one (Fig 7m).
Put the plastic housing back(Fig 7n)
Finally check the fuse status indicator on the
panel, when the fuse are not installed or not
appropriate installed, the indicator shows red
(Fig 7p).
—
Fig 7k
—
Fig 7m
—
Fig 7n
—
Fig 7p
7.5.4 Fuses of BS Standards replacement
• Mounting the adapters
The fuse holder is preset to take fuses with
fixing center distance of 454 mm. For smaller
sizes, adapters are needed, as indicated below:
- Adapter for fuses with fixing center distance l
= 305 mm
Select the type of adapter, fix it onto the fuse
on the striker side by means of the grub screws,
the cup springs and the short nuts. Mount the
adapter with the extension, with the cap facing
the striker, torque is 25 Nm (Fig 7q)
• Mounting the fuses
Remove the plastic housing of the fuse.
Mount the fuses or the adapter (preassembled
as indicated in par. a) with the striker, (indicated
by the arrow) facing the opposite side to the one
of the contactor tulips and fix them by means of
the screws and the spring washers.
Put back the plastic housing.