GEK-113308
MIWII Directional Power Protection System
9-11
9 RELAY COMMISSIONING
9.10 RELAY METERING
9
9.10 RELAY METERING
9.10.1
CURRENT AND VOLTAGE METERING
Set the relay to the same frequency than the AC source used and apply the following current and voltage values, checking
that the unit measures the values within an accuracy of 5%. The table shows the minimum and maximum values expected
for each applied value, in MIWII1000 models:
The table shows the minimum and maximum values expected for each applied value, in MIWII2000 models:
Apply the rated current and a voltage value of apprx. 63 Vca with an arbitrary angle difference and check that the angle
measure is within an accuracy of 5%.
MAGNITUDE
MIN.
VALUE
MAX.
MIN.
VALUE
MAX.
MIN.
VALUE
MAX.
Ia
0.47
0.5
0.53
0.95
1
1.05
1.9
2
2.1
VI
9.5
10
10.5
38
40
42
76
80
84
VII
9.5
10
10.5
38
40
42
76
80
84
VIII
9.5
10
10.5
38
40
42
76
80
84
MAGNITUDE
MIN.
VALUE
MAX.
MIN.
VALUE
MAX.
MIN.
VALUE
MAX.
Ia
0.47
0.5
0.53
0.95
1
1.05
1.9
2
2.1
VI
9.5
10
10.5
38
40
42
76
80
84
