Case; Receiving, Handling, And Storage - GE STD15C Instructions Manual

OPERATING UNIT
The primary functioning
simple telephone relay.
consists of many electronic components mounted on a printed circuit card in the top half of the relay.
This printed
Is adjusted prior
card is shown in Fiq.
It too has been carefully adjusted at the factory and should require no further attention.
relay has been disturbed, refer to the section under adjustment.
TARGET AND SEAL-IN
a target and seal-in unit mounted on the top left of the relay. This
series and its contacts in parallel with the main contacts of the telephone-type relay.
type relay contacts close, the seal-in unit operates; raising its target into vision and sealing around
the telephone type contacts.
button beneath the lower left corner of the cover of the relay case.
The case suitable for surface or semi-flush panel mounting, and an assortment of hardware is pro-
vided for method.
indicator and instantaneous unit.
The case has studs or screw connections at the bottom for the external connections. The
connections between the relay unit and the case studs are made through spring backed contact finger mounted
in stationary molded inner and outer blocks between which rests a removable connecting plug which completes
circuit. The outer block, attached to the case, holds the studs for the external connection, and the
block has terminals for the internal connections.
The relay mechanism is mounted in a steel framework called the cradle and is a
leads terminating at the inner block.
a guide pin at the back of the case.
cannot be inserted in the case upside down.
between the blocks of the cradle and case, also locks the latch In place. The cover. which
the case by thumbscrews. holds the connecting plug in place.
To draw out the relay unit, the cover is removed and the plug is drawn out. Shorting
in the case to short the current
relay can be easily drawn out.
A separate testing plug can be inserted in place of the connecting plug to rest the relay in
the panel either from its own source of current, or from other sources.
out and replaced by another which has been tested in the laboratory.
These relays, when
protect them against damage;
If injury or damage resulting from rough handling is evident. file a damage claim at once with
transit.
the
Reasonable care should be exercised in unpacking the relay in order that none of the parts are
or the adjustments disturbed.
If the relays are not to be installed
a place that is free from moisture, dust and metallic chips.
case may find its way inside when the cover is removed and cause trouble in the operation of the relay.
Courtesy of NationalSwitchgear.com
of the relay is a
The sense ampllfler is shown In Fig. 10 and
card is installed in an eight-prong printed card design base. This
the factory and should require no further attention. A schematic of this
The telephone-type relay is mounted vertically in the mid-section of the relay.
The target of this unit will remain exposed until released by pushing a
The cover attaches to the case, and carries the target reset mechanism for the
Each cover screw has provision for a sealing
This cradle
The connecting plug. besides
circuits (see Fig. 6).
RECEIVING, HANDLING OR STORAGE
included as a part of a control panel will
upon receipt of a relay, examine It for any damage
and promptly notify the nearest General Electric Apparatus
state amplifier whose
as a large rectangle. The amplifier
held in the case with a latch at the top and
The case and cradle are so constructed that the relay
The latches are then released and the
Or, the relay unit can be drawn
shipped In cartons designed
they should be stored in
Foreign matter collected on the outside of
controls a
If this small
has Its coil in
the
unit with all
the connection
fastened to
are provided
in
original cartons in
On