TABLE IV. Operating voltage, frequency, and tripping-time delay (configuration 1) - Continued. 1/
Tripping-time delay at high and low temperature C (tripping time in seconds) 3/
Time
delay
50 V dc
240 V ac, 60 Hz
240 V ac, 400 Hz
percent
rated
K
L
M
N
P
R
S
current
-40
+85
-40
+85
-40
+85
-40
+85
-40
+85
-40
+85
-40
+85
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
no trip
no trip
no trip
no trip
no trip
no trip
no trip
100
one hour
one hour
one hour
one hour
one hour
one hour
one hour
N/A
N/A
N/A
N/A
N/A
N/A
.1
100
1
500
.1
100
.5
500
125
5
1500
.1
100
.5
500
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
150
.5
500
.05
10
.1
100
.05
10
.05
100
.05
10
.1
100
200
Inst
100
Inst
3
Inst
20
Inst
3
Inst
20
Inst
3
Inst
20
400
Inst
5
Inst
1
Inst
5
Inst
1
Inst
5
Inst
1
Inst
5
600
.5 Inst
Inst
.5
Inst
.5
Inst
.5
Inst
.5
Inst
.5
Inst
2
800
1/ Circuit breakers shall not trip at 100 percent rated current but must trip at 125 or 150 percent of rated current. Between 100 percent and
125 or 150 percent, they may trip. Instantaneous is defined as less than 15 milliseconds.
2/ Items without the high-inrush feature (for use in production only) are not subject to this requirement. High-inrush test shall be performed
using one alternation which has a peak value of 1800 percent of rated current. 400 Hz and dc delays shall be subjected to a 400 Hz
waveform, 60 Hz delays shall be subjected to a 60 Hz waveform.
3/ High and low test temperature tolerances are 2C.
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