ERL 8700/BUS, Руководство пользователя

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Appendix A IED Specifications
D01908R02.12 B-PRO User Manual 8700 Appendix A-3
Weight 11.52 kg 25.40 lbs
Dimensions 13.3 cm 3U high, 5.25"
48.3 cm rack mount 19" rack mount
30.5 cm deep 12” deep
Mounting Horizontal
Time Synchronization and Accuracy:
External Time Source
The B-PRO relay is synchronized using
IRIG-B input (modulated or unmodu-
lated) auto detect. Free Running Accuracy: In the absence
of an external time source, the relay
maintains time with a maximum ±15
minutes drift per year over the full oper-
ating temperature range, and maxi-
mum ±90 seconds drift per year at a
constant temperature of 25°C. The
relay can detect loss or re-establish-
ment of external time source and auto-
matically switch between internal and
external time.
Synchronization Accuracy
Sampling clocks synchronized with the
time source (internal or external).
Overall B-PRO Accuracies:
Current ± 2.5% of inputs from 0.1 to 1.0 x nominal current (In)
± 1.0% of inputs from 1.0 to 20.0 x nominal current (In)
Voltage ± 1.0% of inputs from 0.01 to 2.0 x nominal voltage (Vn)
Timers ± 3 ms of set value
Inverse Overcurrent Times ± 2.5% or ± 1 cycle of selected curve
Definite Overcurrent Times ± 2.5% or ± 1 cycle non-directional
± 2.5% or ± 1.5 cycle directional
Frequency Timers ± 3 ms of set value plus 1.25 cycles to 1.75 cycles of inherent delay
Burden AC Voltage Inputs, < 0.15 VA @ 69 volts
AC Current Inputs, < 0.50 VA @ 5 amps
B-PRO Model 8700/BUS Specification
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