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MOUNTING
The relay s hould
drilling d imens ions are s hown in Figure 12.
CONNECTIONS
The internal connection diagrams
external connections are s hown in Figure 8.
One
of
the
conductor not les s than No. 12 B&S gage copper wire or its equivalent.
ADJUSTMENTS
Target and Seal-in Unit
For trip coils that operate on currents ranging from 0. 2 up to 2 amperes at the
minimum control voltage, s et the target and s eal-in tap plug in the 0. 2 ampere tap.
The tap plug is
s eal-in unit.
To change the tap s etting, firs t remove the connecting plugs .
take a s crew from the left-hand s tationary contact and place it in the d es ired tap.
Next, remove the screw from the other (right hand)
hand contact.
Following this proced ure prevents the right-hand s tationary contact
from getting out of adjus tment.
s ame time.
Voltage Settings
The contact-operating voltage may be changed by the position of the tap plug in
the tap block at the top of the relay.
140 volts on the 115 volt ratings , from 110 to 280 volts on the 230 volt rating, and
from 220 to 560 on the 460 volt ratings .
marked for the d es ired voltage (i. e. , above which the relay is not to operate) .
The tap s ettings ind icate voltage values at which the contacts will clos e.
s pring-adjus ting ring is provided for a s ensitive adjus tment of relay operation.
the
factory adjus tment
obtained by ins erting a tool in the notches around the edge of the ring (see Figure
10) and turning the ring to the des ired position.
d es ired s etting between the taps .
clos e its contacts from any time-dial pos ition at a voltage within 5% of the tap
plug s etting.
For example:
clos e when the voltage is red uced from a higher value d own to 55 volts .
contacts will open again at no more than 110% of the tap s etting.
tap s etting, the contacts will open when the voltage is increas ed to a value greater
than 55 but les s than 61 volts .
be mounted on a vertical s urface.
mounting
s tuds
or
the s crew hold ing the right-hand
Screws s hould
has
been d is turbed,
If the tap-plug s etting is 55 volts , the contacts will
GEH-1768
are s hown 1.n Figures
s crews
s hould
be permanently
tap, and place it in the left
never
The range of this adjus tment is from 55 to
Screw the tap plug firmly into the tap
the
d es ired
This adjus tment als o permits any
The relay has been adjus ted at the factory to
7
The outline and panel-
6 and
5,
7 .
grounded
s tationary contact of the
both
be left in
taps at the
operating
value
For the 55 volt
Typical
by a
Then
A
If
may
be
The relay
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