3BTELECONTROL FUNCTIONS
PROTECTION, CONTROL AND METERING FUNCTIONS
breaker at the remote end of the line trips when the signal is received if its zone 2
element, is detecting a fault. The logical diagram for such a function is shown in
Figure 2-58
A
B
Tx
Rx
Tx
Rx
Pickup
50/67
Pickup
50
Trip
A
Trip
B
Trip
50H/67
Trip
50H
Forward Direction
Figure 2-58 PUTT diagram (permissive under reach transferred trip)
For high currents that indicate 80% or less of the line length, the trip at one side
occurs instantaneously and the signal is sent to the other side using the smART P2P
protocol. At the other end a trip (50H) will occur if the fault from the other side
happened at 80% or less or we shall have a pickup for the 50 unit if the fault current
indicates a fault beyond 80% in which case the trip is blocked until permission arrives
from the other side. See that even when the 50 unit is configured to trip in a time
greater than the 50H trip can occur earlier if permission arrives from the other end.
2.3.2.3. DIRECT TRANSFERED TRIP
This diagram uses an 80% coverage from each side (zone 1) if any of the units trips
the other one trips too. The logical diagram is shown in Figure 2-59:
Summary of Contents for smART P500
Page 1: ...Instruction Manual Multifunction Protection Relay smART P500...
Page 23: ...2BTABLES INDEX THIS PAGE HAS BEEN LEFT BLANK INTENTIONALLY...
Page 39: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 9 Wye Wye Connection measured neutral...
Page 40: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 10 Wye Wye Connection sensitive neutral...
Page 41: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 11 Open Delta Connection measured neutral...
Page 42: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 12 Open Delta Connection sensitive neutral...
Page 511: ...2BANSI CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 6 Moderately ANSI curve...
Page 513: ...2BANSI CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 7 Very inverse ANSI curve...
Page 515: ...2BANSI CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 8 Extremely inverse ANSI curve...
Page 532: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 14 Recloser Curves 101 119...
Page 535: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 15 Recloser Curves 120 142...
Page 538: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 16 Recloser Curves 151 202...