GE P50 Agile P253 Technical Manual page 286

13 Technical Specifications
Negative Phase Sequence Overcurrent
Operating value
I.
Operating time
II.
Reset time
III.
2nd Harmonic
Operating value
I.
IFL
IFL setting
I.
Thermal Overload
Thermal alarm/trip/lockout
I.
Cooling Time
II.
Loss of Load
Operating value
I.
Operating time
T inhib
II.
CB Fail
Operating time
I.
Operating value
II.
*Note : Filtering time (typically 25ms) is added when CBF initiated by external binary input
Stall Detection
Prolonged start / Stall detection/
I.
Stall Rotor Strt
Limit NB Strt
Supervising Time / Time Betwe Start /
I.
Inhib. Strt Time
Note: As per IEC60255-151 Class 5.2 (assigned error 5%) the tolerance calculated as below.
Value of characteristic quantity as multiple of setting value (Gs)
Limiting error as multiple of an assigned error
13-6
Pick-up
Minimum trip level (IDMT)
Drop –off
IDMT characteristic shape
DT operation
** Reference condition
DT
IDMT (only for IEEE & US curves)
2ndHarm Thresh
I>lift 2H
Operating value
Setting accuracy
Operating time
Reset value
Accuracy
Pick-up
Drop –off
DT operation
DT operation
DT operation
CBF Reset
Reset current (I< / IN1<)
Pick-up
Timer accuracy
Timer accuracy
2-5
2.5
P50 Agile P253
Setting ±5%
1.05 x Setting ± 5%
0.95 x Setting ± 5%
As per clause 5.2 of 60255-151 or
50 ms whichever is greater
± 5% or 55 ms whichever is greater**
Currents applied at 2x pick-up level or
higher
Set delay ±7.5% or 55 ms whichever is
greater
Calculated time ±10%
Setting ± 15%
Setting ± 15%
Setting ±5%
Setting ±5%
Calculated time ±7.5%
97% of thermal setting ±5%
±15% of theoretical time
0.95 x Setting ± 5%
1.05 x Setting ± 5%
± 5% or 55 ms whichever is greater
±5% or 55 ms whichever is greater
± 5% or 60 ms whichever is greater
<30 ms*
Setting ± 5%
Setting ±5%
±5% or 55 ms whichever is greater
±5% or 55 ms whichever is greater
5-10 Above 10
1.5 1
P253/EN M/C