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6 FUNCTIONAL TESTS (USER SETTINGS)
a) SETTINGS AND CALCULATIONS
1.
Record the following relay settings:
(1401), POSSEQANG = [________]
(102), Z1PRREACH = [________] (Zone 1)
(202), Z2PHREACH = [________] (Zone 2)
(302), Z3PHREACH = [________] (Zone 3)
(402), Z4PHREACH = [________] (Zone 4)
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 6–2: TEST CURRENT RANGES FOR PHASE-TO-PHASE REACH
Z
REACH
I
G
T
( I
= 5 A)
N
0.1 to 2.5
10
2.5 to 6.0
8
6.0 to 12.0
5
12.0 to 20.0
3
20.0 to 30.0
2
30.0 to 40.0
1.5
40.0 to 50.0
1.0
Choose øI (the I
angle). V
3.
T
øI
= [________]° (Zone 1)
1
øI
= [________]° (Zone 2)
2
øI
= [________]° (Zone 3)
3
øI
= [________]° (Zone 4)
4
4.
Calculate V
for each zone by substituting the values of Z
NOM
for V
according to zone.
NOM
V
= [________] Volts rms (nominal test voltage for Z1P)
NOM 1
V
= [________] Volts rms (nominal test voltage for Z2P)
NOM 2
V
= [________] Volts rms (nominal test voltage for Z3P)
NOM 3
V
= [________] Volts rms (nominal test voltage for Z4P)
NOM 4
If Zone 4 is reversed (Protection Setting 408: Z4DIRECTN = REVERS), remember to add 180° to both the test
current angle, øI
4
NOTE
to calculate V
NOM 4
5.
Record V
, I
, and øI
NOM n
T
GE Power Management
, for Zone 1, Zone 2, Zone 3, and Zone 4 from Table 6–2.
T
(A)
Z
REACH
G
( I
= 1 A)
N
0.5 to 12.5
12.5 to 30.0
30.0 to 60.0
60.0 to 100.0
100.0 to 150.0
150.0 to 200.0
200.0 to 250.0
is at maximum when øI = øZ – 30°.
NOM
, and the impedance angle, øZ
.
in the space provided in the appropriate Zone reach test.
n
ALPS Advanced Line Protection System
I
(A)
T
2
2
1
0.6
0.4
0.3
0.2
, øZ (POSSEQANG), I
, and øI into Equations 25 and 26
R
T
. If Zone 4 has a non-zero offset, use the ALPS-Test software
4
6.5 ZONE REACH TESTS
6-15
6
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