Measurements
Table 5.1.17.-15 Measured values
Description Parameter
(channel 0)
R, W, P Value
Thermal level V60 R, W (P) 0...106%
a)b)
One-minute average current value V61 R 0...50 x I
n
c)
Average current value during the specified
time range
V62 R 0...50 x I
n
c)
Maximum one-minute average current
value during the specified time range
V63 R 0...50 x I
n
c)
a)
Changing the thermal level via serial communication will generate an event code.
b)
If the thermal protection has been set out of operation, the parameter cannot be written to, and dashes
will be shown on the LCD and “999” when the thermal level is read via the SPA bus.
c)
If the demand value is reset and the specified time has not elapsed, dashes are shown on the LCD and
“999” when the parameter is read via the SPA bus.
5.1.17.1. Event codes
Special codes are determined to represent certain events, such as start and tripping
of protection stages and different states of output signals.
The events are stored in the event buffer of the relay. The maximum capacity of the
buffer is 100 events. Under normal conditions the buffer is empty.
The contents of the buffer can be read using the L command, 5 events at a time.
Using the L command erases the previously read events from the buffer, with the
exception of events E50 and E51 which have to be reset by using the C command. If
a fault occurs and reading fails for example in data communication, the events can
be re-read by using the B command. If needed, the B command can also be repeated.
Events to be included in the event reporting are marked with the multiplier 1. The
event mask is formed by the sum of the weighting factors of all those events which
are to be included in event reporting.
Table 5.1.17.1.-1 Event masks
Event mask Code Setting range Default setting
V155 E31...E36 0...63 1
1V155 1E1...1E12 0...4095 1365
1V156 1E13...1E24 0...4095 1365
1V157 1E25...1E42 0...262143 4180
2V155 2E1...2E16 0...65535 3
2V156 2E17...2E26 0...1023 0
3V155 3E1...3E12 0...4095 1023
3V156 3E13...3E22 0...1023 1008
Channel 0
Events always included in the event reporting:
128
REF 610REF 610
Feeder Protection Relay
Technical Reference Manual
1MRS755310
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