T&R 228-1, Руководство по эксплуатации и техническому обслуживанию, Страница: 18 / 56

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The output metering ranges for the loading unit depend on the loading unit connected. The
metering ranges are identified as 10%, 50% and 100% on the control unit. These relate to the
maximum current that is available from the loading unit (on a PLU-6k the metering ranges are
600A, 3000A and 6000A when connected in series mode). When using the 0.2s, 0.5s and 1s
pulse modes the trip level is doubled e.g. the PLU-6k will trip at 12000A using all the pulse
modes except the 2s range.
1.3.4.1 Loading Unit Ammeter Ranges when set for series connection
Loading unit Metering range
Metering full
scale
Accuracy Trip current
PLU-5k
10% 500.0A 0.5%rdg+5d 525A
50% 2500A 0.5%rdg+5d 2625A
100% 5000A 0.5%rdg+5d 5250A
PLU-6k
10% 600.0A 0.5%rdg+5d 630A
50% 3000A 0.5%rdg+5d 3130A
100% 6000A 0.5%rdg+5d 6300A
1.3.4.2 Loading Unit Ammeter Ranges when set for parallel connection
Loading unit Metering range
Metering full
scale
Accuracy Trip current
PLU-5k
10% 250.0A 0.5%rdg+5d 265A
50% 1250A 0.5%rdg+5d 1275A
100% 2500A 0.5%rdg+5d 2625A
PLU-6k
10% 300.0A 0.5%rdg+5d 315A
50% 1500A 0.5%rdg+5d 1575A
100% 3000A 0.5%rdg+5d 3150A
1.3.4.3 Secondary Injection Output Ammeter Ranges
Unit
Ammeter
range
Accuracy Trip current
CU-Ps
10.00A ±0.5%rdg±5d 10.5A
20.00A ±0.5%rdg±5d 21A
100.0A ±0.5%rdg±5d 105A