Mechanical Monitoring - Hitachi Relion 650 Series Technical Manual

1MRK 511 557-UEN Rev. A
AARCTMLX = Electrical Interruption time – INPRIOPLX
Refer Section
ACBMSCBR also evaluates error target value ERELOTOLX (in milliseconds) for open operations as
difference between AELORTOLX and PELORTOLX,
ERELOTOLX = AELORTOLX – PELORTOLX
The same value is also given at the output ERELORTLX for opening operations.
Re-strike/re-ignition detection and count
In every controlled opening operation, ACBMSCBR checks the primary current signal selected by
FeedbackSigO for re-ignition/re-strike (see
activating the RSTRDETLX output. Specifically, a re-ignition or re-strike is declared when final
current interruption is detected later than 1/8 power cycle after the predicted interruption instant,
AELORTOLX – PELORTOLX > T/8.
Every re-ignition/re-strike increments an internal counter. The counter value is published at the
RTKCTLX output. It can be reset to zero by activating the RESRCNT input.
12.18.7.12

Mechanical monitoring

Based on the detection of auxiliary contact changeover, ACBMSCBR provides the following
mechanical monitoring values at its outputs.
• Mechanical operating time
• Initial mechanical delay
• Mechanical movement time
Mechanical operating time
ACBMSCBR provides two values during any open/close operation, namely the predicted and the
actual (estimated) mechanical operating time. The predicted value is published as soon as a Close or
Trip command is received on the CLCMDINP or OPCMDINP input and the actual value is published
300 ms after receiving the CCLCMDLX or COPCMDLX command.
The predicted mechanical opening time PMCORTOLX (in milliseconds) is defined as:
PMCORTOLX = INPRIOPLX+ OPENCOMP
where OPENCOMP is the total compensation value for the mechanical opening time.
The same value is also given at the output PMCORTLX for opening operations..
The predicted mechanical closing time PMCORTCLX (in milliseconds) is defined as:
PMCORTCLX = INPRICLLX + CLOSECOMP + ADAPTCLLX
where CLOSECOMP is the total compensation value for the mechanical closing time.
The same value is also given at the output PMCORTLX for closing operations.
The actual mechanical opening time AMCOTOLX (in milliseconds) is defined as:
AMCOTOLX = Mechanical opening time
Refer Section
The same value is also given at the output AMCOTMLX for opening operations.
Technical Manual
12.18.7.10.2.
12.18.7.10.5.
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Section 12.18.7.10.3) and indicates this event by
Section 12
Monitoring
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