Areva MiCOM P125, Technical Manual

Page: 177 / 362

Technical Data P12y/EN TD/D32
MiCOM P125/P126 & P127 Page 9/28
8. PROTECTION SETTING RANGES
8.1 [67/50/51] Directional/Non-Directional Phase Overcurrent (P127)
−
Phase current Fundamental only
−
Phase or phase to phase voltage Fundamental only
−
Minimum voltage operation 0.6V (Un: 57 to 130V)
−
Minimum voltage operation 3.0V (Un: 220 to 480V)
8.1.1 Synchronous Polarisation
−
Minimum phase voltage fixed threshold enabling
synchronous polarising: 0.6V
−
Synchronous polarising permanence time
phase voltage thresholds: 5 s
NOTE : When I> is associated to an IDMT curve, the maximum setting
recommended should be 2In.
8.1.2 Protection Setting Ranges (P127)
Setting Range
[67] Phase OC Min Max Step
I> ? No or Yes or DIR
I> 0.1 In 25 In 0.01 In
Delay type DT or IDMT (IEC_STI, IEC_SI,
IEC_VI, IEC_EI, IEC_LTI, C02, C08,
IEEE_MI, IIEEE_VI, IEEE_EI, RI,
RECT curve)
tI> 0 s 150 s 0.01 s
I> TMS 0.025 1.5 0.025
I> Reset Delay Type DT or IDMT
I> RTMS 0.025 3.2 0.025
I> tReset 0.00 s 100 s 0.01 s
I> I>> I>>>
Interlock No or Yes
I> Torque angle 0° 359° 1°
I> Trip zone
±
10°
±
170°
1°
I>> ? No or Yes or DIR
I>> 0.5 In 40 In 0.01 In
Delay type DT or IDMT (IEC_STI, IEC_SI,
IEC_VI, IEC_EI, IEC_LTI, C02, C08,
IEEE_MI, IIEEE_VI, IEEE_EI, RI,
RECT curve)
tI>> 0 s 150 s 0.01 s
I>> TMS 0.025 1.5 0.025
I>> Reset Delay Type DT or IDMT
I>> RTMS 0.025 3,2 0.025
I>> tReset 0.00 s 100 s 0.01 s