Sepam series 20 Sepam series 40 - POWERLAB

Protection
Setting ranges
Functions Settings Time delays
ANSI 67N/67NC type 1 - Directional earth fault, according to I0 projection
Characteristic angle -45°, 0°, 15°, 30°, 45°, 60°, 90°
Is0 set point 0.1 to 15 In0 Definite time Inst.; 0.05 s to 300 s
Vs0 set point
2 to 80% of Unp
Memory time T0mem time 0; 0.05 s to 300 s
V0mem validity set point 0; 2 to 80% of Unp
ANSI 67N/67NC type 2 - Directional earth fault, according to I0 magnitude with half-plane tripping zone
Characteristic angle -45°, 0°, 15°, 30°, 45°, 60°, 90°
Tripping curve Tripping time delay Reset time
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
Is0 set point 0.1 to 15 In0 Definite time Inst.; 0.05 s to 300 s
0.1 to 1 In0 IDMT 0.1 s to 12.5 s at 10 Is0
Vs0 set point
2 to 80% of Unp
Reset time Definite time (DT; timer hold) Inst.; 0.05 s to 300 s
IDMT (IDMT; reset time)
0.5 s to 20 s
ANSI 67N/67NC type 3 - Directional earth fault, according to I0 magnitude with angular sector tripping zone
Angle at start of tripping zone 0° to 359°
Angle at end of tripping zone 0° to 359°
Is0 set point CSH core balance CT (2 A rating) 0.2 A to 30 A Definite time Inst.; 0.05 to 300 s
1 A CT + CSH30
0.1 to 15 In0 (min. 0.1 A)
(sensitive, In0 = 0.1 CT In)
Core balance CT + ACE990 (range 1) 0.1 to In0 (min. 0.1 A)
Vs0 set point Calculated V0 (sum of 3 2 to 80 % of Unp
voltages)
Measured V0 (external VT) 0.6 to 80 % of Unp
ANSI 81H - Overfrequency
series 20 50 to 53 Hz or 60 to 63 Hz 0.1 s to 300 s
series 40 50 to 55 Hz or 60 to 65 Hz 0.1 s to 300 s
ANSI 81L - Underfrequency
series 20 45 to 50 Hz or 55 to 60 Hz 0.1 s to 300 s
series 40 40 to 50 Hz or 50 to 60 Hz 0.1 s to 300 s
ANSI 81R - Rate of change of frequency
0.1 to 10 Hz/s Inst.; 0.15 s to 300 s
(1) Tripping as of 1.2 Is.
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