Failures; Self-Test Report - GE TVRMS2 Series User Manual

Ground Fault Pickup
|– AGAIN –|
... ..... ..... ..... .
Ground Fault Pickup setting display.
Ground Fault Pickup is always displayed as a multiple of S,
the current sensor rating. This value is found on the
faceplate of the Trip Unit rating plug and on the circuit
breaker nameplate.
Press ( ) to repeat the test at a different switch
F1
AGAIN
setting. Press ( ) to display the Ground Fault Delay
F3
MORE
setting:
Ground Fault Delay = I2T
|– AGAIN –|
... ..... ..... ..... ...
Ground Fault Delay setting display.
This display shows the delay slope (
and the delay length (
MIN
shows the actual setting of the Ground Fault Delay switch,
which is not affected by the Zone Selective Interlock input.
Pressing ( ) causes the Test Kit to check for the
MORE F3
Zone Selective Interlock option for Ground Fault. If it is
not installed, the display contains the message:
Zone Interlock not included
... ..... ..... ..... .....
Display when Zone Selective Interlock is not installed.
If this option is installed in the Trip Unit, the present state
( or ) is displayed, along with the modified value of
ON OFF
the Short Time Delay band, as illustrated below:
Zone Interlock ON (Delay Band = MAX)
|– AGAIN -|
... ..... ..... ..... ..... ..
Zone Selective Interlock status display.
If the Zone Selective Interlock option is installed and the
input is active, the delay band is the same as set by the
switch setting. If the Zone Selective Interlock input is off,
then the delay band is set to minimum (
Press ( ) to return to settings menu #3 or
F3
MORE
to return to the function test menu.

Failures

If any switch setting is not read properly during the test,
first verify that the switch is properly seated by turning it to
a different setting, then back to the desired setting. Press
( ) to repeat the test. If the switch is still not read
F1
AGAIN
Chapter 4. Power+™, RMS-9, and Epic Trip Units
= .25S
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IN, MAX Band
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or
I2T IN I2T OUT
, , or ). This display
INT MAX
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) delay
MIN
EXIT
properly, the Trip Unit under test should be replaced and
referred to an authorized GE service representative.
If the rating plug value read by the Test Kit does not
match the value shown on the front of the rating plug, de-
energize the breaker, remove and then reinstall the rating
plug. If the value read by the Test Kit still does not match,
the rating plug should be replaced.
4–3 Self-Test Report
Select
SELF TEST
initiate the Trip Unit self-test. The test verifies the
operation of the following:
• Analog-to-digital converter
• Read-only memory (ROM)
• Random-access memory (RAM)
• Nonvolatile memory
)
If all modules pass the self-test, the following message is
displayed:
Trip Unit is OK
Trip Unit self-test display.
Press the (
F3
MORE
menu or ( ) to return to the function test menu.
F4
EXIT
If the Trip Unit fails the self-test, a failure message is
displayed for each of the subunits that failed. If more than
one subunit failed, press the
all. The failure messages are displayed as follows:
A/D Converter Failed
... ..... ..... ..... ..... ..... .....
A/D converter failure message.
RAM Failed
... ..... ..... ..... ..... ..... ..... ..
RAM failure message.
( )
F4
ROM Failed
... ..... ..... ..... ..... ..... ..... ....
ROM failure message.
Non-volatile Memory Failed
... ..... ..... ..... ..... ..... ..... ..... .
Nonvolatile memory failure message.
11
TVRMS2 Digital Test Kit
( ) from the Trip Unit tests menu to
F3
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) key to return to the Trip Unit test
( ) key to display them
F3
MORE
|– MORE –|– EXIT –|
|– MORE –|– EXIT –|
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