GE L30 Instruction Manual page 513

CHAPTER 5: SETTINGS
To ensure element accuracy for high overcurrent conditions, the maximum value of I/(k x I
realistically it is exceeding this value.
The reset time of the thermal overload protection element is also time delayed using following formula:
where
τ = thermal protection trip time constant
rst
T = a minimum reset time setting
min
L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
Figure 5-160: IEC 255-8 sample operate and reset curves
CONTROL ELEMENTS
) is limited to 8, even when
B
Eq. 5-30
5-299
5