IEC 60255 曲線公式
其中：
TMS denoted time multiplier setting
Is
denoted the current setting.
I
denoted the actual current.
k
and α denoted the curve type constants.
See table below.
|
Curve
type |
k |
α |
|
Standard inverse |
0.140 |
0.020 |
|
Very inverse |
13.5 |
1 |
|
Extremely inverse |
80 |
2 |
|
Long time standard inverse |
120 |
1 |
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