Operation Principle - ABB REL650 series Technical Manual

Section 13
Logic
Table 370: SPTPTRC (94) Group settings (advanced)
Name Values (Range)
TripLockout Disabled
Enabled
AutoLock Disabled
Enabled
13.2.6
534
Unit Step
- -
- -

Operation principle

The duration of a trip output signal from tripping logic phase segregated output SPTPTRC
(94) function is settable (tTripMin). The pulse length should be long enough to secure the
breaker opening.
For three-pole tripping, SPTPTRC (94) function has a single input (TRIN) through which
all trip output signals from the protection functions within the IED, or from external
protection functions via one or more of the IEDs binary inputs, are routed. It has a single
trip output (TRIP) for connection to one or more of the IEDs binary outputs, as well as to
other functions within the IED requiring this signal. See figure 253.
BLOCK
TRIN
Operation Mode = Enabled
Program = 3 phase
ANSI10000266 V1 EN
Figure 255: Simplified logic diagram for three pole trip
Tripping logic SPTPTRC (94) function for single- and three-pole tripping has additional
phase segregated inputs for this, as well as inputs for faulted phase selection. The latter
inputs enable single- and three-pole tripping for those functions which do not have their
own phase selection capability, and therefore which have just a single trip output and not
phase segregated trip outputs for routing through the phase segregated trip inputs of the
expanded SPTPTRC (94) function. Examples of such protection functions are the residual
overcurrent protections. The SPTPTRC (94) function has two inputs for these functions,
one for impedance tripping (for example, carrier-aided tripping commands from the
scheme communication logic), and one for ground fault tripping (for example, tripping
output from a residual overcurrent protection). Additional logic secures a three-pole final
trip command for these protection functions in the absence of the required phase selection
signals.
Default Description
Disabled On: Activate output (CLLKOUT) and trip latch,
Off: Only output
Disabled On: Lockout from input (SETLKOUT) and trip,
Off: Only input
tTripMin
t
AND
1MRK 506 335-UUS A
TRIP
OR
ANSI10000266-1-en.vsd
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