ARMY TM 9-6115-604-12
NAVY NAVFC P-8-633-12
Table 2-5. Overcurrent Relay K114 Controls and Instruments (Continued)
Figure 2-5, 3
Current Pickup Tap for phase C
Provides for seven pickup settings which
4
are marked In CT secondary amperes.
When a pin is pulled out, that phase
switches to the maximum tap setting
The pin may be moved with the relay. In
service.
Figure 2-5, 4
TRIP test pushbutton for INST
This pushbutton, recessed to prevent
function
accidental operations, will produce a trip
signal and operate the INST target (6,
below).
Figure 2-5, 5
INST dial
Used to select instantaneous pickup set-
3
tings. The markings around the dial Indi-
cate multiples of pickup tap setting For
example, if the phase A tap is set to 6
amperes and the INST dial is set at 8,
the INST setting is 6 amperes x 8 = 48
amperes and an instantaneous trip will
occur at 48 amperes in phase A of the
relay.
Figure 2-5, 6
INST target
Operates if INST circuit causes a trip
Dark
Figure 2-5, 7
TARGET RESET pushbutton
Used to reset targets after a trip.
--
Figure 2-5, 8
TIME target
Operates If TIME circuit causes a trip.
Dark
Figure 2-5, 9
TIME vernier adjust
Allows for TIME settings between values
Fully counter-
marked around TIME dial.
clockwise
Figure 2-5, 10
TIME dial
Used to select one of 10 time-current
10
curves.
Figure 2-5, 11
TRIP test pushbutton for TIME
This pushbutton, recessed to prevent
--
function
accidental operations, will produce a trip
signal and operate the TIME target (8,
above)
FIGURE
AND
INDEX NO.
CONTROL OR
INSTRUMENT
FUNCTION
NORMAL
READING/
SETTING AT
RATED LOAD
2-14
