Issue February 2002
Document Number: 13124
- 28 -
6.3.17. Parameter
-17-
: Maximum permissible values for the harmonic current
For the harmonic portions of the 3rd; 5th; 7th; 11th; 13th; 17th and 19th harmonic, 10 maximum value
profiles in percentage can be set. When at least one harmonic wave exceeds its set maximum value for
a period of 5 minutes, the fault alarm
≡
HAR
is triggered.
Maximum permissible value of harmonic in % of the fundamental
frequency current
3rd
5th
7th
11th
13th
17th
19th
Display
not activated
OFF
10
10
7
5
4
3
3
1
15
15
12
8
6
5
4
2
20
20
14
9
8
6
5
3
25
25
18
11
10
7
7
4
30
30
21
14
12
9
8
5
35
35
25
16
13
10
9
6
40
40
29
18
15
12
11
7
45
45
32
20
17
13
12
8
50
50
36
23
19
15
13
9
If
RST
is selected (see page 20),
OFF
is reset.
6.3.18. Parameter
-18-
: C.T. transformation ratio
k
The current transformer transformation ratio
k
can be set by means of parameter 18. The displayed
current values and C/k values will be respectively multiplied by the set factor. Factors between
1
and
8000
can be selected. This is possible in all the initialization modes.
If
RST
is selected (see page 20),
1
is reset.
6.3.19. Parameter
-19-
: Time delay for switching out steps in case of
≡
I
and
≡
E
If fault alarm is given as a consequence of undercurrent
≡
I
and energy feed-back
≡
E
, capacitor steps
can be switched out after the set waiting delay has elapsed. The switch-out function has to be released
via parameter 14. Waiting delays between
30
and
500
seconds can be set.
Step width is 10 seconds (range of 30 – 200), 20 seconds (range of 200 – 300) and 50 seconds (range
of 300 – 500).
If
RST
is selected (see page 20),
500
is reset.
