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Appendix A-1. FULL PERFORMANCE TESTS (V2.6x)
The following kinds and quantities of test equipment
are used for the MDAR Acceptance Tests:
• Voltmeter (1)
• Ammeter (1)
• Phase Angle Meter (1)
• Load Bank (2)
• Variac (3)
• Phase Shifter (1)
• Optional Doble or Multi-Amp Test System
NOTE: Before turning on the dc power supply,
check jumper positions on the Intercon-
nect and Microprocessor modules as
shown in Table 4-4. Also, refer to this ta-
ble for relay system operation.
!
WARNING
Check jumper #3 on the Microprocessor module
is for the selection of phase sequence rotation
ABC or ACB. Remove Jumper 3 for system ABC
rotation for the following test. For V2.6x rotation
ACB is not applicable.
Refer to the NOTE under Table A-1 for 1 amp ct ap-
plication.
1. FULL PERFORMANCE TESTS
Full performance tests explore MDAR responses
and characteristics for engineering evaluation. They
are in two parts: Non-Pilot and Pilot Acceptance
Tests.
NOTE: Customers who are familiar with the
MDAR performance and characteristics
should disregard this section and pro-
ceed directly to Section A-2 "Mainte-
nance Tests".
1.1
Non-Pilot Performance Tests
To prepare the MDAR relay assembly for Non-Pilot
Acceptance Tests, connect the MDAR per Figure A-
1, Configuration 1.
1.1.1
Front Panel Check
Step 1.
Turn on rated battery voltage. Check the
FREQ setting to match the line frequency and ct
type CTYP. Apply a balanced 3-phase voltage
(70 Vac); the Alarm-1 relay should be energized.
(Terminals TB4-7 and -8 should be zero ohms.)
Step 2.
Check "RELAY-IN-SERVICE" LED; it
should be "ON".
Step 3.
Press "RESET TARGETS" push-button;
the green LED (Volts/Amps/Angle) should be
"ON".
Step 4.
Using a dc voltmeter, measure the dc volt-
ages on the front panel display with respect to
common
(±
5 %).
Step 5.
Press the DISPLAY SELECT pushbutton,
and note that the mode LED cycles thru the five
display modes. Release the pushbutton so that
the SETTINGS mode LED is "ON".
Step 6.
Refer to Chapter 7, paragraph 7.3 for all
possible MDAR SETTINGS, and set the values in
accordance with Table A-1. For Negative Se-
quence Directional Unit, change DIRU from
ZSEQ to NSEQ. For dual polarizing directional
ground unit, change DIRU to DUAL.
Step 7.
Press the DISPLAY SELECT pushbutton
to obtain the METERING mode (VOLTS/ AMPS/
ANGLE).
1.1.2
Angle Current and Voltage Input Check
Step 8.
Using Figure A-1, Configuration 1, apply
three ac voltages of 70 V
I
. Adjust phase A current to lag phase A voltage
A
°
(V
) by 75
.
AN
Step 9.
Press FUNCTION RAISE or FUNCTION
LOWER pushbutton. Read input current (IA), in-
put voltage (V
), and angle (ANG). All values
AG
within 5%.
NOTE: Be sure that the RP setting is "NO". If the
RP setting is "YES", the readings will be
the primary side values (KV and KA).
I.L. 40-385.5
and an ac current of
LN
A-1
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