
IEC 61000-2-4 Class I
JN Japan
Minimum Start Threshold 92%
Minimum Start Threshold 50%
Maximum Start Threshold 108%
Maximum Start Threshold 107%
Duration Magnitude
Duration
Magnitude
Event
Cycles %of nominal
Event
Cycles
%of nominal
Swell 1
2
108%
Swell 1
10
107%
Swell 2
2
108%
Swell 2
10
107%
Swell 3
2
108%
Swell 3
10
107%
Minor 1
2
92%
Minor 1
2
95%
Minor 2
2
92%
Minor 2
2
95%
Major 1
2
92%
Major 1
25
80%
Major 2
2
92%
Major 2
10
50%
Major 3
2
92%
Major 3
10
50%
Major 4
2
92%
Major 4
10
50%
IEC 61000-2-4 Class II
MIL STD 704E (Aircraft)
Minimum Start Threshold 90%
Minimum Start Threshold 73%
Maximum Start Threshold 110%
Maximum Start Threshold 164%
Duration
Magnitude
Event
Cycles %of nominal
Event
Cycles
%of nominal
Swell 1
2
110%
Swell 1
5
118%
Swell 2
2
110%
Swell 2
3
127%
Swell 3
2
110%
Swell 3
2
164%
Minor 1
2
90%
Minor 1
2
95%
Minor 2
2
90%
Minor 2
2
95%
Major 1
360
90%
Major 1
5
95%
Major 2
360
90%
Major 2
2
73%
Major 3
360
90%
Major 3
2
73%
Major 4
360
90%
Major 4
2
73%
20
CBEMA
60hz
IEEE 1159
Minimum Start Threshold 30%
Minimum Start Threshold 90%
Maximum Start Threshold 115%
Maximum Start Threshold 110%
Duration
Magnitude
Duration Magnitude
Event
Cycles
%of nominal
Event
Cycles %of nominal IEEE Definition
Swell 1
12
106%
Swell 1
1
110%
Instantaneous Swell
Swell 2
12
106%
Swell 2
30
110%
Momentary Swell
Swell 3
2
115%
Swell 3
180
110%
Temporary Swell
Minor 1
2
90%
Minor 1
1
90%
Instantaneous Sag
Minor 2
2
90%
Minor 2
1
90%
Major 1
120
87%
Major 1
30
90%
Momentary Sag
Major 2
18
80%
Major 2
180
90%
Temporary Sag
Major 3
6
60%
Major 3
180
90%
Major 4
2
30%
Major 4
180
90%
SEMI
ZA South Africa
Minimum Start Threshold 50%
Minimum Start Threshold 40%
Maximum Start Threshold 108%
Maximum Start Threshold 110%
Duration Magnitude
Duration
Magnitude
Event
Cycles %of nominal
Event
Cycles
%of nominal
Swell 1
2
108%
Swell 1
2
110%
Swell 2
2
108%
Swell 2
2
110%
Swell 3
2
108%
Swell 3
2
110%
Minor 1
600
90%
Minor 1
2
90%
Minor 2
30
80%
Minor 2
2
90%
Major 1
12
70%
Major 1
150
80%
Major 2
1
50%
Major 2
30
40%
Major 3
1
50%
Major 3
30
40%
Major 4
1
50%
Major 4
30
40%
19
ND 5790-3 61-830 Instructions 10/24/07 4:13 PM Page 19