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(9) External Connections
Connect the photo-troller as shown in Fig. 3,
making sure that connections to terminals 1 to 4
are made as shown in the table in this figure.
Connect the light source to terminals 5-6, using
cahle with 80 amperes capacity. When an extended
photo-tube is used , do not place the phototube
in the socket inside the case, but connect the
phototube housing to terminals A-C by means of
cahle PDS-7415-2 as supplied with the phototube
housing. Make sure that terminal A on the phototroller
terminal board is connected to terminal A in
the phototube housing.
Run the cable in grounded metallic conduit.
with no other leads in this conduit. The length of
the phototube cable must not exceed 10 feet unless
the photo-troller is derated as outlined in paragraph
1, in which case cahle up to 25 feet long may
he used . Do not splice the phototube cable, and
use no friction tape or other types of tape at the
ends of the cable.
Ground terminal G inside the photo-troller case
to a waterpipe.
Run leads connecting to the rclay contacts directly
to the knockouts on the left hand side of the
photo-troller case. Do not run relay leads across
the photo-troller either in front or in rear.
(ll) Operation
With the switch in up position the relay is
closed when the phototube is illuminated. \\7ith
the switch in the "down" position, the relay IS
closed when the phototube is dark.
(10) Relay Characteristics
Contact Interrupting Capacity
H'estingholtJe Type RX-J Photo-Troller
One "lVlake" . ........ 20 12
One "Break" . .......... 10 6
*Two "lV1ake" in series . . 30 20
*Reverse left hand stationary co ntact.
Note : Two "Break" Contacts cannot be used.
Contact Carrying Capacity
One "make" contact: 12 amp. continuous.
One "break" contact : 6 amp. continuous.
Operations per Minute
100
80
'"
. 60
:'\!
"
-... 40
.