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GEl-31000 Network Relays Types CALl6A and CANUA
the relay untlll and the case studs are made through
sprtng backed contact fingers mounted In stationary
molded Inner and outer blocks between which neslll
a removable connecting plug which completes the
circuits.
The outer blocks, attached to
th~
case,
have the studs for the external connecttons, and the
Inner blocks have the terminals for the Internal
connections.
The relay mechanism Is mounted In a steel
framework called the cradle and Is a complete unit
with all leads being terminated at the Inner block.
This cradle Is held firmly In the case with a latch
at the top and the bottom and by a guide pin at the
back of the case.
The cases and cradles are so
constructed that the relay cannot be Inserted In the
case upside down.
The connecting plug, besides
making the electrical connections between the re-
epecllve blocks
of
the cradle and case, also locka the
latch In place.
The cover
l
which Is lstened to the
caRe
by thumbscrews, hol<1ll the connecting plug In
place.
To draw out the relay unit the cover Is lIrst
removed, and the plug drawn out. Shorting bars are
provided In the case to short the our rent transfor-
mer circuits.
The latches are then released, and
the relay unit can
be
easlly drawn out. To replace
the relay unit, the reverse order Is followed.
A separate tesllng plug can be Inserted In place
of the connecting plug
to
test the relay In place on
the panel either from Its
own
source of current and
voltage, or from other sources. Or, the retay unit
can be drawn out and reptaced by another which has
been tested In the laboratory.
INSTALLATION
LOCATION
AND
MOUNTING
The locallon should be clean and dry, free from
dust and excessive Vibration, and well lighted to
lacllItate Inspection and testing.
The relay should
be
mounted on a vertical sur-
lace.
The outline and panel drUllng dImensions lor
the Type CAL16A retay,
In
the size Ml case, Is
shown In Fig. 6.
The outline and panel drilling
•
r
I
I
2
HOLDING
CO IL
•
r
e
r
e
.
~
SHORT FINGERS
3
p~
r
I
7
a
dimensions lor the Type CAN13A relay, In the size
M2 case, Is shown In Fig. 7.
CONNECTIONS
The Internal connections lor the Type CAL16A
and CAN13A relays are shawn In Figs. 1 and 2
respectively.
A typical external connection diagram lor the
Types CAL16A andCAN13A relays Is shown In Fig. 3.
HOLDING
co
Il
TR "
II
I
12
.1.
d.dd
e
0
e
0
0
0
0
0
0
0
3
0
e
J
y 0
3
( ' I I
3
0
e
0
0
~R£ClOSE
lARGE T
)
N
2
C3
r
[TTl
~
I
I
-
e
8
-·SHORT riNGER
fl g.
Internal Connections for Relay Typo CAlI6A
fig. 2
Internal Connection. for Relay Type CA"I3A
..
.
'"
...
~
...
III
~
' 1 '
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.
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;;;:
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