Siemens SIPROTEC 7UT63 series - Page 444

4 Technical Data
444
7UT613/63x Manual
C53000-G1176-C160-2
Trip Time Curves acc. to IEC
Dropout Time Curves as per IEC
Acc. to IEC 60255-3 or BS 142, Section 3.5.2 (see also Figure and 4-8)
The tripping times for I/I
p
≥ 20 are identical to those for I/I
p
= 20.
For residual current read 3I0p instead of I
p
and T
3I0p
instead of T
p
;
for earth faults read I
Ep
instead of I
p
and T
IEp
instead of T
p
Pickup Threshold approx. 1.10 · I
p
Acc. to IEC 60255-3 or BS 142, Section 3.5.2 (see also Figure and 4-8)
The reset time characteristics apply to (I/Ip) ≤ 0.90
For residual current read 3I0p instead of I
p
and T
3I0p
instead of T
p
;
for earth faults read I
Ep
instead of I
p
and T
IEp
instead of T
p