Overcurrent Simulation; Long Time Test; Short Time Test; Ground Fault Test - GE TVRMS2 Series User Manual

TVRMS2 Digital Test Kit
Chapter 4. Power+™, RMS-9, and Epic Trip Units
Press the ( ) key after the last failure message to
F3
MORE
return to the Trip Unit test menu, or
to function test menu.
In the event of any subunit failure, remove the breaker
from service and refer the Trip Unit to an authorized GE
service representative.
4–4 Overcurrent Simulation
The Test Kit can simulate a time-overcurrent condition for
each of the following fault types:
• Long Time fault
• Short Time fault
• Ground Fault
The Test Kit first determines whether or not the breaker is
to be allowed to trip with the message:
Do you want the breaker to trip?
|– YES –|
... ..... ..... ..... ..... ..... ..... ..... ...
Trip query display.
If ( ) is selected, the
F1
YES
If ( ) is selected, the
F3 NO TRIP TEST
NO
next menu lists the available tests:
Select Test (F4 to EXIT)
|– LT –|– ST
... ..... ..... ..... ..... ..... ..... ..... .....
Overcurrent test selection menu.
If ( ) or ( ) is selected, the Test Kit first verifies
F2 F3
ST GF
that the option is installed in the Trip Unit. If that option
is not installed, the appropriate message is displayed, as
illustrated above in the Short Time and Ground Fault
settings tests.

Long Time Test

If ( ) is selected, the Test Kit displays the message:
F1
LT
Set Current Setting and press F3
... ..... ..... ..... ..... ..... ..... ..... ..... ..
Long Time current setting display.
Select the desired current setting on the Trip Unit, then
press ( ), which displays the verification message:
F3
CONT
LONG TIME TEST WITHOUT BREAKER TRIP
... ..... ..... ..... ..... ..... ..... ..... ..... ....
Long Time test verification display.
) to return
EXIT (F4
|– NO –|– EXIT –|
LED begins to flash.
TRIP TEST
LED activates. The
–|– GF –|– EXIT –|
|– CONT –|– EXIT –|
|– CONT –|– EXIT –|
Press ( ) to initiate the test or
F3
CONT
to the function test menu.

Short Time Test

If ( F2 ) is selected from the overcurrent test selection
ST
menu, the Test Kit displays the message:
Set Short Time Pickup and press F3
... ..... ..... ..... ..... ..... ..... ..... ..... ..... .
Short Time Pickup setting display.
Select the desired Short Time Pickup setting on the Trip
Unit, then press (
CONT
message:
SHORT TIME TEST WITHOUT BREAKER TRIP
... ..... ..... ..... ..... ..... ..... ..... ..... ..... ...
Short Time test verification display.
Press ( ) to initiate the test or
F3
CONT
to the function test menu.

Ground Fault Test

If ( ) is selected from the overcurrent test selection
F3
GF
menu, the Test Kit displays the message:
Set Ground Fault Pickup and press F3
... ..... ..... ..... ..... ..... ..... ..... ..... ..... .....
Ground Fault Pickup setting display.
Select the desired Ground Fault Pickup setting on the Trip
Unit, then press (
CONT
message:
GND FAULT TEST
... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..
Ground Fault test verification display.

Overcurrent Simulation Test

During the simulation for any of the three types of test, the
Test Kit first ramps up the simulation current, starting
from less than .9 times the pickup current and continuing
until pickup is reached. At that point, the display contains
the message:
Input Current =
<Press any key to test at current shown>
... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ....
Overcurrent simulation pickup display.
12
( ) to return
F4
EXIT
|– CONT –|– EXIT –|
), which displays the verification
F3
|– CONT –|– EXIT –|
( ) to return
F4
EXIT
|– CONT –|– EXIT –|
), which displays the verification
F3
WITHOUT BREAKER TRIP
|– CONT –|– EXIT –|
1.00C IN PICKUP