InteliLite4 AMF20 Global Guide
262
Short Circuit BOC Delay
Setpoint group Generator settings Related FW 1.3.0
Range [units] 0.00 .. 10.00 [s]
Default value 0.04 s Alternative config YES
Step 0.01 s
Comm object 9991 Related applications AMF,MRS
Config level Advanced
Setpoint visibility Always
Description
Delay for Short Circuit BOC (page 261) protection.
6 back to List of setpoints
IDMT Overcurrent Delay
Setpoint group Generator settings Related FW 1.3.0
Range [units] 1.0 .. 600.0 [s]
Default value 4.0 s Alternative config NO
Step 0.1 s
Comm object 8283 Related applications AMF,MRS
Config level Standard
Setpoint visibility Always
Description
IDMT curve shape selection. IDMT is "very inverse" over current protection. Reaction time is not constant
but depends on over current level according to the following formula:
Note: Reaction time is limited to 3600 s = 60 minutes. IDMT protection is not active for Reaction time
values longer than 60 minutes.
I
gen
is maximal value of all measured phases of generator current.
Table 8.1 EXAMPLE of Reaction time for different over current levels
Overcurrent IDMT Delay
Overcurrent
≤ 100 % 101 % 110 %
Reaction time
0.2 s No action 20 s 2 s
2 s No action 200 s 20 s
20 s No action 2000 s 200 s
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