NHP Terasaki TemBreak PRO P SE Series, User Manual

Page: 38 / 122

Protection Settings
Short Time Delay (STD) Protection
38
TemBreak PRO
P_SE-UM-001-EN
– V1.2.0
I
2
t function for STD
When enabled, the I²t function for STD may be used to improve selectivity with downstream devices by overlaying a supplementary I
2 t = K curve within the
STD tripping section, starting from the I
sd
threshold setting up to the I
i
threshold setting.
Adjustments to the I
2
t for STD setting can be made using one or a combination of the below methods:
-
P_SE OCR embedded display
-
TPED
-
TPCM
P_SE OCR embedded display setting TPED setting TPCM setting Default
OFF: I 2 t for STD disabled
ON: I
2
t for STD enabled
“I2t short”
Off: I 2 t for STD disabled
On: I 2 t for STD enabled
Command ID: 207 “ I 2 t for STD setting ”
Hex 00 00: I 2 t for STD disabled
Hex 00 01: I 2 t for STD enabled
I
2
t for STD disabled