Basler Electric BE1-CDS240 General Information - Manual (Page 23)

81 Frequency Protection
Pickup
Setting Range ................................................................. 40.00 to 70.00 Hz
Accuracy ......................................................................... ±0.01 Hz
Time Delay
Setting Range: ................................................................ 0.000 to 600 s
Accuracy ......................................................................... ±0.5% or ±1 cycle, whichever is greater, plus 3
cycle recognition time
87 Current Differential Protection
Restrained Differential (87RPU, 87RT)
Pickup Accuracy
5 Ampere CT ............................................................ ±4% or ±75 mA, whichever is greater
1 Ampere CT ............................................................ ±4% or ±25 mA, whichever is greater
Response Time (See Figure 1-9) ................................... <2 cycles at 5 times pickup
<3 cycles at 1.5 times pickup
Unrestrained Differential (87UT)
Pickup Accuracy
5 Ampere CT ............................................................ ±3% or ±75 mA, whichever is greater
1 Ampere CT ............................................................ ±3% or ±25 mA, whichever is greater
Response Time (See Figure 1-9) ................................... <1 cycle at 5 times pickup
<2 cycles at 1.5 times pickup
Harmonic Inhibit
Pickup Accuracy
5 Ampere CT ............................................................ ±2% of setting or 50 mA, whichever is greater
1 Ampere CT ............................................................ ±2% of setting or 50 mA, whichever is greater
TAP
Setting Range
5 Ampere CT ............................................................ 2 to 20 A
1 Ampere CT ............................................................ 0.4 to 4 A
Minimum Pickup
1 or 5 Ampere CT
Setting Range .......................................................... 0.1 to 1 per unit
Restraint Slope
1 or 5 Ampere CT
Setting Range .......................................................... 15 to 60%
Second and Fifth Harmonic
1 or 5 Ampere CT
Setting Range .......................................................... 5.0 to 75%
Unrestrained Pickup
1 or 5 Ampere CT
Setting Range .......................................................... 1 to 21 x TAP, up to 30 times I nominal,
symmetrical
9365200990 Rev M BE1-CDS240 General Information 1-21