Non-Pilot Acceptance Tests For Rel301/302; Front Panel Man-Machine-Interface (Mmi) Test - ABB REL 301 Instruction Leaflet

To prepare the relay for testing, it is necessary to make certain test connections. Test connec-
tions can be made to the rear terminals of the relay, or through test plugs and built-in FT switch-
es. The easiest connection, for the voltage and current inputs, is through the FT test plugs and
test switches.
NOTE:
5. 1. NON-PILOT ACCEPTANCE TESTS FOR REL 301/302
5.1.1

Front Panel Man-Machine-Interface (MMI) Test

REL 301/302 front panels consists of 9 Light Emitting Diodes ( LED s)
the Man-Machine-Interface (MMI) which includes a 2 line (16 character per line) Liquid Crystal
Display (LCD) with 4 push-buttons. All settings, two most recent targets, display quantities and
relay test functions can be accessed with the MMI. For acceptance testing, the MMI will be ref-
erenced for all access to and data acquisition from the relay. See Figure 1-5 for a detailed layout
of the front panel with MMI.
If the system under test is not equipped with the MMI or it is desired to utilize one of the com-
munication ports, all access to and data acquisition from the relay can be accomplished. Data
communications via the communication ports will not be covered in this procedure. (Refer to
Section 4.6 for complete details.)
If the relay under test is equipped with reclosing the front panel has additional LEDs (up to 6
with sync check) and the MMI has a switch to toggle between the reclosing settings and protec-
tion settings. Separation of reclosing settings from protection settings alleviates the need to
scroll through the reclosing settings when protection settings are in progress.
STEP 1
To begin the test procedure apply rated dc voltage to terminals F
voltage rating of the relay is stated on the front nameplate. Upon application of the appropriate
dc voltage, the relay will complete a self-test/startup/initialization routine. If the startup routine is
successfully completed, the PROTECTION IN SERVICE LED will light. The LCD display enters
the "METER"
current will read 0.0 amp and no angle will be displayed.) If the PROTECTION IN SERVICE LED
does not light, check the dc supply voltage and connections.
Using the R
mode quantities can be reviewed. See Table 4-2 for complete details of the "METER" display
mode quantities.
MMI is accessed by pressing the S
play modes, "METER"(ing), "L-FLT" (Last FauLT), "P-FLT" (Previous FauLT), "TEST", and
SET(ing). Current display mode is shown in the upper right corner of the LCD display. (See Sec-
tion 4.4.2 for more details.)
1. Bold italic type indicates an output e.g. LEDs or contact output.
2. Bold type, with small capital letters, indicates an input e.g. R
3. Bold type in quotation marks indicates LCD display quantities
When using the conventional FT switch test plugs, it is recommended to re-
move the front nameplate to allow the plug to be fully inserted in the switch
jaws.
3
mode and displays the A phase current magnitude. (At this time the A phase
or L push-button to scroll (forward or backward, respectively) all metering
AISE OWER
ELECT
push-button, to scroll sequentially through the five dis-
push-button or voltage inputs.
ESET
I.L. 40-386.1
1 2
, R push-button and
ESET
-11(+) and F -20(-). The dc
T T
5-3