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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.
Refer to the NOTE under Tables 6-1 and 6-3 for 1
amp ct application.
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 2 "Maintenance
Tests".
1.1
Non-Pilot Performance Tests
To prepare the MDAR relay assembly for Non-Pilot
Acceptance Tests, connect the MDAR per Figure 6-
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"
should be "ON".
Step 3. Press "RESET TARGETS" push-button;
the green LED (Volts/Amps/Angle) should be
"ON".
(5/92)
Section 6. ACCEPTANCE TESTS (V2.02)
LED;
it
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 the Installation Section, Table 4-1,
for all possible MDAR SETTINGS, and set the
values in accordance with Table 6-1. For Nega-
tive Sequence Directional Unit, change DIRU
from ZSEQ to NSEQ. For dual polarizing direc-
tional ground unit, change DIRU to DUAL.
Step 7. Press the DISPLAY SELECT pushbutton to
obtain the METERING mode (VOLTS/ AMPS/
ANGLE). (Refer to Installation Section, Table 4-
2.)
1.1.2
Angle Current and Voltage Input Check
Step 8. Using Figure 6-1, Configuration 1, apply
three ac voltages of 70 V
1A. Adjust phase A current to lag phase A voltage
) by 75 ° .
(V
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.
The angle measurement is for reference
only. For I<0.5A, the display of angle will
be blocked and show zero degrees.
1.1.3
Zone 1 Test/Single-Phase-To-Ground
Step 10. Using Figure 6-1, Configuration 1,
adjust:
V
= 30V
1N
V
= 70V
2N
V
= 70V
3N
MDAR goes into fault mode processing only after
the current detector is enabled. MDAR performs
the test:
I.L. 40-385.1B
and an ac current of
LN
6-1
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