Construction - GE CCP13E Instructions Manual

The type CCP13E relay is mounted in an M2-size case.
ends in the rear for external connections.
case is shown in Figure 3.
The electrical connections between the relay units and the case studs are made
through stationary molded inner and outer blocks, between which nests a removable
connection plug that completes the circuits.
have the studs for the external connections and the inner blocks have the terminals
for the internal connections.
Every circuit in the drawout case has the auxiliary brush, as shown in Figure 4, to
provide adequate overlap when the connecting plug is withdrawn or inserted.
circuits are equipped with shorting bars
on those circuits it is especially important that the auxiliary brush make contact,
as indicated in Figure 4, with adequate pressure to prevent the opening of important
interlocking circuits.
The relay mechanism is mounted in a steel framework called the cradle, and is a
complete unit with all leads terminated at the inner block.
firmly in the case by a latch at both top and bottom and by a guide pin at the back
of the case. The connection plug, besides making the electrical connections between
the respective blocks of the cradle and case, also locks the latch in place.
cover, which is drawn to the case by thumbscrews, holds the connecting plugs in
place.
The relay case is suitable for either semiflush or
to two inches thick,
thickness must be indicated on the relay order to
be included.
These relays are induction-cylinder devices for alternating-current (AC) circuits.
The principle by which torque is developed is the same as that employed in an
induction-disk relay with a watthour meter element, though in arrangement of parts
they are more like split-phase induction motors.
The stator of each unit has eight laminated magnetic poles projecting inward and
arranged symmetrially around a central magnetic core.
current and potential coils; four potential coils that are internally connected,
forming a single circuit, as well as four current coils similarly connected.
annular air gap between the poles and central core is the cylindrical part of the
cup-like aluminum rotor, which turns freely in the air gap.
fixed to the stator frame; the rotor alone turns.
on top of the other. The three rotors are mounted on a single shaft.
This construction provides higher torque and lower rotor inertia than the induction­
disk construction, thus making these relays faster and more sensitive.
The directional contacts
bouncing. The stationary contact (G) is mounted on a flat spiral spring
up by a thin diaphragm (C).
GEK-65525
CONSTRUCT! ON
(
see internal connections in Figure 5), and
and appropriate hardware
(
see Figure 6)
These are both mounted in a slightly inclined tube (A).
5
The case has studs at both
The outline and panel drilling for this
The outer blocks attached to the case
surface mounting on all panels up
is available.
insure that proper hardware will
The poles are fitted with
The three units are mounted one
are especially constructed to suppress
Some
This cradle is held
The
panel
However,
In the
The central core is
( )
F , backed