Basler BE1-DFPR, Инструкция по эксплуатации

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BE1-DFPR General Information
1-8
Information is also provided by the DFPR to schedule breaker maintenance. Available is the number of
breaker operations and arc cumulated contact wear. This information is accessible through communications
under REVIEW/RESET MAINTENANCE VALUES SCREEN.
DFPR relays store minimum and maximum demand values. This information can be retrieved periodically
to keep track of load peaks and growth for planning purposes.
SPECIFICATIONS
BE1-DFPR relays are available with the following features and capabilities.
Accuracies of Measured Currents Refer to Table 1-1 for accuracies of front panel
instrumentation measured currents.
Table 1-1. Accuracies of Instrumentation Currents
For 5 A CT For 1 A CT Accuracy
0.1 to 0.5 A 0.02 to 0.1 A ±5% or ±15 mA
0.5 to 2.0 A 0.1 to 0.4 A ±3%
2.0 to 7.5 A 0.4 to 1.5 A ±2%
Accuracies of Measured Voltages Refer to Table 1-2 for accuracies of front panel
instrumentation measured voltages.
Table 1-2. Accuracies of Instrumentation Voltages
Voltage Accuracy
40 to 130 ±2%
Calculated Values and Accuracy
Present values: W, var, VA, pf
Demand values: A, W, var, VA
Accuracy: Better than ±4% for all values
Demand intervals: 1 to 60 min.
Date And Time Clock
Accuracy: 3 seconds per day at 25
(
C
Resolution: 10 milliseconds
Backup battery: Lithium carbon monofluoride
Battery life: 20 years
Date and time setting provisions: Front panel and communications port
Recognition Time On Contact Inputs 8 ms.
AC Response Characteristics Rejects harmonics higher than second by 12 db or more.
Rejects dc offsets
50 Hz range: 40 to 55 Hz
60 Hz range: 50 to 65 Hz