Section 6 1MRK 505 353-UEN
BP-Additions to base documentation
42 Application Manual
Bay protection functions REB500
Table 49 Directional overcurrent definite time protection 67 (PTOC)
Function/ Parameter Range/ Value
• Current
0.02 to 20 I
N
in steps of 0.01 I
N
• Angle -180° to +180° in steps of 15°
Delay
0.02 to 60 s in steps of 0.01 s
• Wait time 0.02 to 20 s in steps of 0.01 s
• Memory duration
0.2 to 60 s in steps of 0.01 s
• Voltage input range
0.005 to 2 U
• Voltage memory range
<0.005 U
N
• Response time without delay
65 ms
· Directional overcurrent protection with detection of power flow direction
· Back-up protection
· 4 independent parameter sets
· Three-phase measurement
· Suppression of DC and HF components
· Definite time characteristic
· Voltage memory for near faults
· Selectable response when power direction no longer valid (trip or block)
Accuracies Classes/ Value
• Accuracy of pick-up value ±5%
• Accuracy of angle measurement (at 0.97…1.03 f
N
)
±5°
• Reset ratio 95%
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