Blown Fuse Indicator & Trip; Power Fuse Conversion Instructions - GE CR194 Installation Instructions Manual

Blown Fuse Indicator & Trip
All bolted EJ-2 type fuses have inherent blown fuse in­
dication because the striker pin at the top of the fuse
protrudes out when the fuse is blown. In the CR194
two-high, the striker pin drives the blown fuse indica­
tor and trip bar which operates the blown fuse trip
(BFT) contact block. Tke BFT con tact block can be
wired to trip the controller off line to preven t single
phasing of the connected load (anti-single phase pro­
tection ) . It can also be wired to an optional blown fuse
indicator mounted on the low-voltage door. Figure 1 4
shows the top of the bolted power fuse assembly with
the center blown fuse indicator in the "blown" posi­
tion and the two outside blown fuse indicators in the
"normal" position. Figure 1 5 shows the BFT contact
block, with wiring removed for clarity.
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Figure 14. Blown fuse indicators with center phase indicating
"blown" and outside phases indicating "normal"
CR194 Two-High Vacuum Limitamp® Control
Figure 15. Blown fuse trip (BfT) contact block
with wiring removed for clarity
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