536LE008146B
Protection functions
4.3 Short time delay protection against overcurrent
Short time delay protection is designed to protect against low current short circuits.
Short time delay protection curve
tsd
l²t
Short time delay protection
Parameters
S
Activation Activation of the short time delay overcurrent protection
Isd (x Ir)
Short Time Delay
protection threshold
tsd (ms) Short time delay value
I²t (On/O) Short time delay protection curve I²t
The Short time delay protection is adjusted from the PROTECTION SHORT TIME menu of
the sentinel Energy display, the panel display or the Hager Power setup software.
Adjusting the lsd pick-up setting
Isd pick-up adjustment range (x Ir)
1.0 to 10.0 x Ir in increments of 0.5.
The lsd tripping tolerance threshold for short time delay protection is ±10%.
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