18
Testing First Generation Trip Devices
Connections—
Use Cord Set 1 8-732-1 84-506
Phase Selector Switch on phase 1, for all tests.
The connections to the first generation trip devices terminate
on an 8 or 9 point terminal block mounted on the side of the
device. See Figure 8. To allow using the test set plugs to
connect to this terminal block, alligator clips are furnished
with the test set to clip onto the terminal block screws. Four
of the clips accept the four banana plugs and three accept
the pin plugs for the pick-up lights. The bottom line of Table
3 gives the calibrated settings for secondary amperes for the
first generation trip devices and on the same page, available
models are listed and described . Figures 13, 14, 15, 16 and
17 are the time current characteristic curves for the various
models. Connections from the test set are different for
different models and are shown in Figures 9 through 12.
It will be helpful to note certain differences between these
static trips and STATIC TRIP II devices: (1) there are three
Long Time Pick-Up knobs, one for each phase, instead of
one common knob as on STATIC TRIP II (2). There are only
three Long Time Bands instead of 6 and they are marked
“Maximum,” “Intermediate,” and “Minimum.” On some mod-
els, no long time band adjustment is available and the device
is marked to show which time band it contains. (3) The
Instantaneous Pick-Up is
Table 3
Breaker Type Models A3, AG2, 4WAG D2 DG1 4WDG Tripping
Transformer
Group No.
Models AG2 and DG1 Models 4WAG and 4WDG
Long Time Delay Elements Available
Pick-Up Settings (Amperes)
Long Time Delay Element
Available Ground Fault Settings
(Amperes)
Inst. or Short Time Delay
Available Ground Fault Settings
Amperes)
Percent of A" Pick-Up Percent of A" Pick-Up
A B C D E 20% 40% 60% 80% 20% 40% 60% 80%
LA-600 40 50 60 70 80 I - - - - - - -
LA-600 75 95 110 130 150 II - - - - - 30 45 60
LA-600 LA-1600 125 155 175 220 250 III - - - - 25 50 75 100
LA-600 LA-1600 200 250 300 350 400 IV 40 80 120 160 40 80 120 160
LA-600 LA-1600 300 375 450 525 600 V 60 120 180 240 60 120 180 240
LA-600 LA-1600 400 500 600 700 800 V-x 80 160 240 320 80 160 240 320
LA-1600 500 625 750 875 1000 VI 100 200 300 400 100 200 300 400
LA-1600 800 1000 1200 1400 1600 Vll 160 320 480 640 160 320 480 640
LA-1600 1000 1250 1500 1750 2000 VII-x 200 400 600 800 200 400 600 800
LA-3000 1200 1500 1800 2100 2400 VIII 240 480 720 960 240 480 720 960
LA-3000 LA-4000 2000 2500 3000 IX 400 800 1200 1600 400 800 1200 1600
LA-3000 2000 2500 3000 3500 4000 IX-x 400 800 1200 1600 400 800 1200 1600
LA-4000 2000 2500 3000 3500 4000 X 400 800 1200 1600 400 800 1200 1600
Secondary
Pick-Up
Current-Arnperes
0.50 0.625 0.75 0.875 1.00 - 0.10 0.20 0.30 0.40 0.10 0.20 0.30 0.40
To Next Page
Loading...
