ABB RELION 650 SERIES, Technical Manual

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• the pulse length
• the number of pulses, that is, the number of rising and falling flank pairs
In principle, more pulses may lead to reduced accuracy.
14.11.6.2 Memory storage
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The value of the accumulated time is retained in a non-volatile memory,
• at every falling edge of the input IN
• at every even 6 minutes, after a rising edge of the input IN
• after a manual addition of time
Consequently in case of a power failure, there is a risk of losing the difference in
time between actual time and last time stored in the non-volatile memory.
14.11.7 Technical data
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Table 452: TEILGAPC Technical data
Function Range or value Accuracy
Time limit for alarm
supervision, tAlarm
(0 - 99999.9) hours ±0.1% of set value
Time limit for warning
supervision, tWarning
(0 - 99999.9) hours ±0.1% of set value
Time limit for overflow
supervision
Fixed to 99999.9 hours ±0.1%
1MRK 506 382-UEN A
Section 14
Monitoring
Line distance protection REL650 2.2 IEC 639
Technical manual