sepam 20 user manual - Schneider Electric

3
Protection functions Setting ranges
Functions Settings Time delays
ANSI 27 - Phase-to-phase undervoltage
5 to 100 % of Unp 0.05 s to 300 s
ANSI 27D/47 - Positive sequence undervoltage
15 to 60 % of Unp 0.05 s to 300 s
ANSI 27R - Remanent undervoltage
5 to 100 % of Unp 0.05 s to 300 s
ANSI 27S - Phase-to-neutral undervoltage
5 to 100 % of Vnp 0.05 s to 300 s
ANSI 37 - Phase undercurrent
0.15 to 1 Ib 0.05 s to 300 s
ANSI 38/49T - Temperature monitoring (8 or 16 RTDs)
Alarm and trip set points 0 to 180 °C (or 32 to 356 °F)
ANSI 46 - Negative sequence / unbalance
Definite time 0.1 to 5 Ib 0.1 s to 300 s
IDMT 0.1 to 0.5 Ib 0.1 s to 1 s
ANSI 48/51LR/14 - Excessive starting time, locked rotor
0.5 Ib to 5 Ib ST starting time 0.5 s to 300 s
LT and LTS time delays 0.05 s to 300 s
ANSI 49RMS - Thermal overload Rate 1 Rate 2
Accounting for negative sequence component 0 - 2,25 - 4,5 - 9
Time constant Heating T1: 1 to 120 mn T1: 1 to 120 mn
Cooling T2: 5 to 600 mn T2: 5 to 600 mn
Alarm and tripping set points 50 to 300 % of rated thermal capacity
Cold curve modification factor 0 to 100 %
Switching of thermal settings conditions By logic input I26 (transformer)
By Is set point adjustable from 0.25 to 8 Ib (motor)
Maximum equipment temperature 60 to 200 °C (140 °F to 392 °F)
ANSI 50/51 - Phase overcurrent
Tripping time delay Timer hold
Tripping curve Definite time DT
SIT, LTI, VIT, EIT, UIT (1) DT
RI DT
IEC: SIT/A, LTI/B, VIT/B, EIT/C DT or IDMT
IEEE: MI (D), VI (E), EI (F) DT or IDMT
IAC: I, VI, EI DT or IDMT
Is set point 0.1 to 24 In Definite time Inst ; 0.05 s to 300 s
0.1 to 2.4 In IDMT 0.1 s to 12.5 s at 10 Is
Timer hold Definite time (DT ; timer hold) Inst ; 0.05 s to 300 s
IDMT (IDMT ; reset time) 0.5 s to 20 s
ANSI 50BF - Breaker failure
Presence of current 0.2 to 2 In
Operating time 0.05 to 300 s
(1) Tripping as of 1.2 Is.
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PCRED301005EN - 06/2008