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6 FUNCTIONAL TESTS (USER SETTINGS)
∠ T = Characteristic timer of the zone.
∠ I = Test current angle with respect to the faulted phase.
Settings and Calculations:
1. Record the following relay settings:
(1201) POSSEQANG = [________]°
Z1PHREACH = [________] Ω (Zone 1)
(102)
Z2PHREACH = [________] Ω (Zone 2)
(202)
Z3PHREACH = [________] Ω (Zone 3)
(302)
Z4PHREACH = [________] Ω (Zone 4)
(402)
Z1PCHARANG = 90° (fixed for Zone 1)
(203)
Z2PCHARANG = [________]° (Zone 2)
(303)
Z3PCHARANG = [________]° (Zone 3)
(403)
Z4PCHARANG = [________]° (Zone 4)
2. Determine the test current I
I
(Z1R) = [________] Amps rms
T
I
(Z2R) = [________] Amps rms
T
I
(Z3R) = [________] Amps rms
T
I
(Z4R) = [________] Amps rms
T
Table 6–1: TEST CURRENT RANGES FOR PHASE-TO-PHASE REACH
Z
REACH
R
( I
= 5 A)
n
0.1 to 2.5
2.5 to 6.0
6.0 to 12.0
12.0 to 20.0
20.0 to 30.0
30.0 to 40.0
40.0 to 50.0
3. Choose ∠ I (the I
angle). V
T
∠ I
= [________]°
1
∠ I
= [________]°
2
∠ I
= [________]°
3
∠ I
= [________]°
4
GE Power Management
for Zone 1, Zone 2, Zone 3, and Zone 4 from Table 6–1.
T
I
Z
REACH
T
R
( I
= 1A)
n
10 A
0.5 to 12.5
8 A
12.5 to 30.0
5 A
30.0 to 60.0
3 A
60.0 to 100.0
2 A
100.0 to 150.0
1.5 A
150.0 to 200.0
1.0 A
200.0 to 250.0
is at maximum when ∠ I = ∠ T – 30°.
NOM
(Zone 1)
(Zone 2)
(Zone 3)
(Zone 4)
LPS-O Line Protection System
6.3 ZONE REACH TESTS
I
T
2 A
2 A
1 A
0.6 A
0.4 A
0.3 A
0.2 A
6
6-
9
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