KOLLMORGEN E33NRHA-LNN-NS-00 module

KOLLMORGEN E33NRHA-LNN-NS-00 module

Technical data of product parameters

The E33NRHA-LNN-NS-00 distance function is only equipped with underimpedance starters, i.e. the overcurrent starters have been omitted.
As a consequence, the parameters “StartMode” and “Istart”,
the binary input “ExtUZBlk” and the signals “Start OC” and
“Start UZ” do not exist.Distance protection for the high-speed discriminative protection E33NRHA-LNN-NS-00
of long or short overhead lines or cables, double-circuit lines,
heavily loaded lines, lines with weak infeeds and what are referred to as “short-zone” lines.
The protection is applicable to solidly or low-resistance grounded
systems, systems with Petersen coils or to ungrounded systems.
All kinds of faults are detected including close-in three-phase
faults, cross-country faults, evolving faults and high-resistance
earth faults.
The protection remains stable in the presence of power swings
and reversal of energy direction. Switching onto an existing fault
results in instantaneous tripping of the circuit-breaker.
The distance function can also act as back-up protection for the
power transformer and neighbouring lines. Most of the logic
described in this Section (e.g. the transmission of signals) is not
used for these applicationsThe user can determine in which subdirectory the distance E33NRHA-LNN-NS-00
protection logic is located. The default name “DISTSTD” applies
when the standard distance protection logic located in the MMI
directory is used.
The input of a directory is only necessary when a special logic is
used instead of the standard one. The procedure in this case is
to be found in the description of the logic.Some of the signalling relay outputs remain excited until the entire distance protection function has reset (i.e. until ‘Start R+S+T’
resets) and others reset as soon as the particular condition disappears.
The parameter “EventRecFull” (event recorder full) enables a
choice to be made, whether all operation and reset events have
to be recorded in the event list (essential when the protection is

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