A BREAKER MOUNTED - RIGHT SIDE
B EQUIPMENT MOUNTED
FIG. 86
-
NEUTRAL SENSOR SECONDARY
DISCONNECT
Since the neutral sensor is mounted separately
from the breaker, a disconnect means is requi red to
connect its output to the breaker. Fig. 86 shows the
breaker and equipment mounted 4th wire secondary
disconnect used with the M icroVersaTrip system.
1 2.2.1
REPLACEMENT OF CURRENT
SENSORS
Referring to Fig. 87, replacement of MicroVersaTrip cur
rent sensors is accomplished as follows:
a) Disconnect the programmer harness from the ter
minal board, removing cable ties as necessary.
b) At the rear fo the breaker, remove the two Allen head
screws to separate the stud connector from the contact
pivot block.
c) Loosen the clamping bolt and remove the stud con
nector. Uft out the sensor and its tap terminal board.
The sensor may
be
prevented from slipping off the sen
sor stud by adjacent accessories. If this exists, the sensor
stud must
be
removed from the breaker base. The stud
assembly is secured to the base with four bolts which are
accessible from the rear of the breaker.
d) When replacing the stud connector, tighten the Allen
head screw to
2SO
±
10 in-lbs. Tighten the clamping bolt
as follows:
AKR
30130H
1 20
±
10 in-lbs
AKR
50/SOH
470
±
10 in-lbs
AKRT
50/SOH
470
±
10 in-lbs
e) When replacing the programmer harness to the
phase sensors verify that the winding polarity is maintain
ed, white wire with ring terminal to COMMON terminal
(right hand terminal, see Fig. 83).
63
www
. ElectricalPartManuals
. com
