ABB REL 501-C1 2.5, Technical Reference Manual

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111
Definite time non-directional overcurrent
protection (TOC) Chapter 5
Current
2.6 Setting parameters
Path in local HMI: Settings/Functions/Group n /TimeDelayOC (where n =1-4)
Table 117: Setting parameters for the time delayed phase and residual overcurrent pro-
tection TOC (TOC--) function
2.7 Technical data
Table 118: TOC - Definite time nondirectional overcurrent protection
Parameter Range Default Unit Description
Operation Off, On Off - Operating mode for TOC function
IP> 10-400
Step: 1 100 % of I1b Operating phase overcurrent
tP 0.000-60.000
Step: 0.001 10.000 s Time delay of phase overcurrent function
IN> 10-150
Step:1 100 % of I4b Operating residual current
tN 0.000-60.000
Step: 0.001 10.000 s Time delay of residual overcurrent func-
tion
Function Setting range Accuracy
Operate current Phase measuring ele-
ments, IP> (10-400) % of I1b in
steps of 1 %
±
2.5 % of I
r
at I
≤
I
r
±
2.5 % of I at I >I
r
Residual measuring ele-
ments, IN> (10-150) % of I4b in
steps of 1 %
±
2.5 % of I
r
at I
≤
I
r
±
2.5 % of I at I >I
r
Time delay Phase measuring ele-
ments (0.000-60.000) s in
steps of 1 ms
±
0.5 % of t
±
10 ms
Residual measuring ele-
ments (0.000-60.000) s in
steps of 1 ms
±
0.5 % of t
±
10 ms
Dynamic overreach at
τ
< 100 ms - < 5 %