Configuration; General; Starters - ABB RELION REB500 Technical Manual

1MRK 505 406-UEN B
5.1.6

Configuration

5.1.6.1

General

The first parameter in the sub-menu General is
distance when the function trips and has no influence of the protection function itself. The
parameter states the reactance of the reference length (in secondary Ω/ph per unit length)
and may be set to display km, miles, percent line length and so on, that is,
Distance
For example,
• To display fault distance in km
Secondary reactance per km = 0.2 Ω/phase
Ref. length = 0.2 Ω/phase
• To display fault distance in % of line length
Secondary reactance of the line = 25 Ω/phase (1% = 0.25 Ω/phase)
Ref. length = 0.25 Ω/phase
The setting of the parameter
on the line side or the busbar side. There are thus two possible settings
Line side option is the one to choose, providing the protection is connected according to
The
the wiring diagram in the appendix.
5.1.6.2

Starters

The distance function provides for two methods of starting, that is, overcurrent or
underimpedance. The desired method is selected by appropriately setting the parameter
StartMode in the STARTERS sub-menu.
Depending on the setting of the parameter
the time
Overcurrent starters
The overcurrent starters are enabled by selecting
up level of the overcurrent starters is determined by the setting of the parameter
corresponding setting range is from 0.5 to 10 IN, in steps of 0.01 IN. The setting of
be sufficiently above the maximum load current to avoid any risk of mal-operation under
normal load conditions. Note that all currents greater than 80% of the highest phase current
(and also the enabling current
When determining the maximum load current it must be considered that:
• In the case of a double-circuit line, the load current IB can briefly reach double its normal
value when one circuit is tripped.
• Ground faults can cause additional balancing currents IA in the healthy phases.
Bay protection functions REB500
Technical manual
X

meas .
ref. length
CT neutral depends on whether the star-point of the main CTs is
The parameter Analogue inputs determines whether the neutral current is
connected to an analogue input (setting
information icon alerts the reader of important facts and conditions.
Delay (Def) .
Imin ) are taken into account by the phase selection function.
© Copyright 2019 ABB. All rights reserved
Ref length . It is used to display the fault
I0 input ) or is derived internally. The
DefDirMode , a starter can also trip on its own after
OC for the parameter StartMode . The pick-
Section 5
Bay protection functions
GUID-4860E469-1FF3-441D-B6B9-C6A13A87149D v1
Bus side or Line side .
GUID-3570AA0F-8DE9-46B0-B18F-21CFB453AF53 v1
GUID-EE5ECD9D-422E-46A4-A02A-E7D61151EFD5 v1
IStart . The
IStart must
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