Advertisement
Lr' h4/
M]-M? Ott
ct
S[t ite ret ay tnt)' bick to
tilu','
fl(fl I
n,tenj
unici
i.rie
B;'
FI.INJAIjM
REA1O TEST sec,ion eic
.'
oFI'Mt
link to
the
tin
ic,,
1.
on
'
'
urii t offset tap at
ohms (OCYS1F1A)
,
20 ohms (1CY51F24
1
App1 y I 20 vol t
1
iinpirc
rJ
e t
t[ctc Ise angl
r
meter tO
read 255 degrees lag
Reduce the vol taqe and current to that ii 'ted in Table XVI I
TABLE XVII
RElAY MODEL
OFFSET
CURRENT
l?GCY5IF1A
M 1
2550 Lag
"IN'
20V
17.0 -23.0
N 2
75° Lag
4L
l2OV
9 -114
3E2
12OV
10.8 -Li.2A
2!l
60V
6.75- 8.254
1
60V
9—114
60V
14.7 -15.3A
I2GCY51F2A
M 1
255° Lag
"IN"
20V
3.4
-
4.1
N 2
750
Lag
2O1
12OV
1.8
-
2.2A
15
l2OV
2.16- 2.644
lO
120V
2.7
-
3.34
5c2
l2OV
3.6
-
4.4A
0 c
60V
2.94- 3.06
TARGET/SEAL— IN
The target seal-in unit has an operating coil tapped at 0.6 or 2.0 amperes.
The relay is shipped froo
the factory with the tap screw in the 2.0 ampere position.
The oPerating point of the seal-in unit can be
checked by connecting from a d-c source (+) to stud 11 of the relay and from stud 1 through an adjustable
resistor and ammeter back to
(-).
Connect a jumper from stud 13 to stud 1 also so that the seal—in contact
will protect the
unit contact.
Then close the M contact by hand and increase the d—c current until the
seal-in unit operates.
It should pick up at tap value or sliohtly lower.
Do not attempt to interrupt the
d-c current by means of the M 1 contact.
If it is necessary to change the tap setting of the target seal—in unit
from
0.6 to 2 amps, or vice-
versa, observe the following procedure.
Assuming the tao is being changed from 0.6 to 24, remove one of the
screws from the 1eft-hand contact strip and insert it into the 2A position in the right-hand strip, being
sure that it is securely tightened.
Then remove the screw from the 0.64 position and insert it in the
vacant hole in the left-hand strip.
This procedure insures that the contact adjustment of the unit will not
be disturbed while the tap setting is being changed.
INSTALLATION PROCEDURE
LOCATION
The location of the relay should be clean and dry, free from dust, excessive heat and vibration, and
should be well lighted to facilitate inspection and testing.
MOUNTING
The relay should be mounted on a vertical surface.
The outline and panel drillinc dimensions are shown
in
Fig. 15.
Connections
The electrical connections are made to the relay by studs provided at the rear of the case.
An ele
mentary diagram of typical external connections is shown n Figs. l6A and 16B.
Reach settings other than the basic minimum reach can be set by reducing the restraint transftriser
taD
settings.
The reach with reduced transformer settings can be deteririned Sy the following equation.
17
Advertisement
