Update Documentation P341/EN AD/F43
MiCOM P341
(AD) -35
Setting Range
Menu Text Default Setting
Min. Max.
Step Size
DST End Month October
January/February/March/
April/May/June/July/August/
September/November/
December
N/A
Setting to specify the month in which daylight saving time adjustment ends
DST End Mins 60 min 0 min 1425 min 15 min
Setting to specify the time of day in which daylight saving time adjustment ends. This is set
relative to 00:00 hrs on the selected day when time adjustment is to end.
RP1 Time Zone Local UTC/Local N/A
Setting for the rear port 1 interface to specify if time synchronization received will be local
or universal time co-ordinated
RP2 Time Zone Local UTC/Local N/A
Setting for the rear port 2 interface to specify if time synchronization received will be local
or universal time co-ordinated
Tunnel Time Zone Local UTC/Local N/A
Setting to specify if time synchronization received will be local or universal time co-ordinate
when ‘tunneling’ courier protocol over ethernet.
6. AUXILIARY SUPPLY FUSE RATING
In the Safety section of this manual, the maximum allowable fuse rating of 16A is quoted. To
allow time grading with fuses upstream, a lower fuselink current rating is often preferable.
Use of standard ratings of between 6A and 16A is recommended. Low voltage fuselinks,
rated at 250V minimum and compliant with IEC60269-2 general application type gG are
acceptable, with high rupturing capacity. This gives equivalent characteristics to HRC "red
spot" fuses type NIT/TIA often specified historically.
The table below recommends advisory limits on relays connected per fused spur. This
applies to MiCOM Px40 series devices with hardware suffix C and higher, as these have
inrush current limitation on switch-on, to conserve the fuse-link.
Maximum Number of MiCOM Px40 Relays Recommended Per Fuse
Battery Nominal
Voltage
6A 10A Fuse 15 or 16A Fuse Fuse Rating > 16A
24 to 54V 2 4 6 Not permitted
60 to 125V 4 8 12 Not permitted
138 to 250V 6 10 16 Not permitted
Alternatively, miniature circuit breakers (MCB) may be used to protect the auxiliary supply
circuits.
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