Parameters - ABB RELION REB500 Technical Manual

1MRK 505 406-UEN B
5.9.5

Parameters

Table 90: Directional sensitive EF protection for grounded system function - parameters
Signal
ParSet 4..1
VoltageInp
CurrentInp
CT neutral
I-Setting
V-Setting
Angle
ComMode
SendMode
1 Channel
Echo
t
Basic
t
Wait
tTransBlk
Ext Block
Receive
Table continues on next page
Bay protection functions REB500
Technical manual
Description
Parameter for determining in which set of parameters a particular function is
active.
Defines the VT input channel. All the VT input channels are available for selection.
Defines the CT input channel. All the CT input channels are available for selection.
Side of the CTs on which the star-point is formed (current direction):
• line
• busbar (reversed connection)
Current pick-up setting
Reference voltage pick-up setting
Characteristic angle setting
Kind of transfer tripping scheme:
• permissive
• blocking
For what system condition a signal is transmitted in an intertripping scheme:
• forwards measurement (only permissive scheme)
• non-directional (only blocking scheme)
• backwards measurement (only blocking scheme)
Supplementary logic needed for coordinating ground fault and distance
protections when using the same communications channel for a permissive
scheme.
• off
• on
Echo logic for weak infeed and open CB:
• off Echo logic disabled
• Weak Echo only for weak infeed
• Bkr Echo only when CB open
• Weak & Bkr Echo for weak infeed or CB open
Basic time setting
Time allowed for a blocking signal to be transferred and for the directional
comparison to be made.
Blocking time after a reversal of fault energy direction (transient blocking).
I/P for an external blocking signal.
• F: enabled
• T: disabled
• xx: all binary inputs (or outputs of protection functions)
PLC receive input.
• F: no PLC receive signal
• xx: all binary inputs (or outputs of protection functions)
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Section 5
Bay protection functions
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