Installation - GE IAC59A Instructions Manual

2
Fig. 15 (X-6209663 [8])
the Type IAC52B Relay (Front View)
LOC
The location should
dust and excessive vibration, and well lighted to
facilitate inspection and testing.
MOUNTINQ
The relay should
surface. The outline and panel diagrams are shown
in Figs. 20 and 21.
CONNECTIONS
Internal connection diagrams for the various
relay types are shown in Fig. 11 to 17 inclusive.
Typical wiring diagrams are given in Fig. 4 to
inclusive.
One of the mounting studs or screws should
permanently grounded by a conductor not less than
B&S
No. 12 gage copper wire or its equivalent.
INSPICTION
At the time of installation, the relay should be
inspected for tarnished contacts, loose screws, or
other imperfections.
should be corrected in the manner described under
MAINTENANCE.
CAUTION:
Every circuit in the drawout case has an auxi­
liary brush. It is especially important on current
INSTANT,
UNIT
INDUCTION
UN IT
INSTANT,
UN IT
9
•
*SHORT FINGER
Internal Connections for

INSTALLATION

A I N
T O
be
clean and dry, free from
be
mounted on a vertical
If
any trouble is found, it
Time Overcurrent Relays Type
TO TIM[!?
'STOP"
0
6 7
VARIABLE RESISTOR
10
MIN. RECCM.IENDED VOLTS,
120
AT RATED FREQUENCY
Fig. 16 (K-6154399-7) Testing Connections for
Type lAC Relays such as Type IAC51A
circuits and other circuits with shorting bars that
the auxiliary brush be bent high enough to engage
the connecting plug or test plug before the main
brushes do. This will prevent CT secondary cir­
cuits from being o pened.
CONNECTING PLUG
6
be
NOTE: AFTER ENGAGING AUXILIARY
1/4
INCH BEFORE ENGAGING
TRAVELS
�HE TERMINAL BLOCK.
Fig. 17 (8025039) Cross Section of Drawout Case
Showing Position of Auxiliary Brush.
lAC
TO INDICATING LIGHT
WHEN
CHECKING PICKUP
OF MAIN UNIT
--
TO INDICATING LIGHT WHEt
---
CHECK lNG PICKUP OF
_..
INSTANTANEOUS UN IT
r-- -
6
0
4 5
3
0 0
0
8 9 10
X LA13 TEST PLUG
TO TIMER
'START"
T£
TO ACCURA L Y REPROWCE
RELAY CHARACTERISTICS
ALL TESTS SHOULD
..-,OE WITH RELAY IN CASE.
MAIN BRUSH CONNECTING BLOCK
CONNECTING
BRUSH,
THE MAIN BRUSH
GEH-1753
BE
PLUG
ON
11