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NHP TemBreak PRO P - Adjusting T Sd (Time Delay); I Sd Time Delay Adjustment Settings (Ms)

NHP TemBreak PRO P
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Protection Settings
Short Time Delay Protection (STD)
31
TemBreak PRO P_BE-UM-001-EN V1.3.0
Adjusting t
sd
(Time Delay)
The t
sd
time delay can be adjusted from the t
sd
dial, where the tripping delay is given in milliseconds (ms).
An I
2
t function for STD can be enabled by setting the t
sd
dial to a value on the right side, or I
2
t disabled by setting a value on the left side.
For example: The figure below displays t
sd
set to 100ms with I
2
t for STD as enabled.
See I
2
t function for STD section for more information.
I
sd
Time Delay Adjustment Settings (ms)
50
100
200
300
400
The trip time tolerance for short time delay protection is as follows:
-
For t
sd
= 50 ms: ±30 ms
-
For t
sd
≥ 100 ms: -20 ms / +50 ms
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