Protection activation check
The main purpose of the module is to disable the Operate logic module when the CB
open command has been deployed by another function, for example, a protection
or control function. The activation of the CB_OPEN_CMD input disables the Operate
logic module immediately. The duration of the disabling time can be set with the
CB
open hold delay
setting.
Operate logic
The OPERATE output of this module can be used for closing the circuit breaker if it is
opened for an unknown reason. The OPERATE output is activated immediately after
the CB_POSOPEN input becomes active and CB_POSCLOSE inactive. The pulse length
for the OPERATE output signal can be set with the
Operate pulse time
setting.
The module is disabled if the signal power supply is faulty (SI_PWR_ON
= FALSE) or the open command is sent to the breaker (CB_OPEN_CMD =
TRUE).
5.8.5 Application
The uncorresponding circuit breaker position means that the actual position of
the circuit breaker’s control switch is unmatched with the real position of the
circuit breaker. In a normal situation, the function is used in cooperation with
the autoreclosing function DARREC. The operate signal can start the autoreclosing
when detecting that the circuit breaker has opened in an unknown situation. If the
function is used as a stand-alone function when an unknown circuit breaker open
is detected, the function output can be used as an information indication for the
supervision station.
5.8.6 Signals
Table 826: UPCALH Input signals
Name Type Default Description
CB_OPEN_CMD BOOLEAN 0=False CB open command,
common
CB_POSCLOSE BOOLEAN 0=False CB position closed
CB_POSOPEN BOOLEAN 0=False CB position open
SI_PWR_ON BOOLEAN 0=False Signal power on
Table 827: UPCALH Output signals
Name
Type Description
OPERATE BOOLEAN Operate
5.8.7 Settings
Protection related functions
1MRS757644 H
864 620 series
Technical Manual
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