Configuration - ABB RELION REB500 Technical Manual

1MRK 505 406-UEN B
Signal
Receive
Ext Block
Trip
Start
Start L1
Start L2
Start L3
MeasFwd
MeasBwd
5.4.6

Configuration

The following parameters have to be set:
• Pick-up current I-Setting
• Characteristic angle Angle
• Delay Delay
• Time allowed for receipt of signal t
• Response at the end of the memorized power direction time MemDirMode
• Time during which the memorized direction is valid MemDuration
Pick-up value I-Setting
I-Setting must be selected high enough to prevent false tripping or alarms from taking place
and low enough to reliably detect the minimum fault current. The setting must be more than
the maximum transient load current and allow for:
• CT and relay inaccuracies
• the reset ratio
The maximum transient load current has to be determined according to the power system
operating conditions and take account of switching operations and load surges.
Bay protection functions REB500
Technical manual
Description
Input for the signal from the opposite end of the line:
• T: not used
• xx: all binary inputs (or outputs of protection functions)
• F: not blocked
• xx: all binary inputs (or outputs of protection functions)
Tripping signal.
Pick-up signal.
L1 phase pick-up signal
L2 phase pick-up signal
L3 phase pick-up signal
Signals measurement in the forwards direction.
Signals measurement in the backwards direction.
Wait
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Section 5
Bay protection functions
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