Date Code 20011026 Maintenance and Testing 7-27
SEL-321/321-1 Instruction Manual
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Note: As you perform this test, other protection elements may assert, causing the relay to
close other output contacts and assert relay targets. This is normal and is not a cause
for concern.
Negative-Sequence Directional Element Test Using Three Voltage Sources and One
Current Source
Step 1. Execute the SHOWSET command and verify the following relay settings: Z1MAG,
Z1ANG, Z2F, 50QF, Z2R, 50QR, and a2. The example relay settings use the
following settings: Z1MAG = 7.8 Ω; Z1ANG = 83.97°; Z2F = 0.77 Ω; 50QF = 0.5
amps secondary; Z2R = 5.45 Ω; 50QR = 0.5 amps secondary; a2 = 0.07.
Execute the SET command and change the example ELOP setting from Y to N.
Step 2. Select output contacts to indicate operation of the 32QF and 32QR elements. In this
example we use the OUT7 and OUT8 outputs.
From Access Level 2, execute the SET L n command to configure Output 7 and
Output 8 to close for assertion of the 32QF and 32QR elements, respectively.
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