Appendix A IED Specifications
Appendix A-4
L-PRO 4000 User Manual
D02706R02.30
Overall L-PRO Accuracies
Current
±2.5% of inputs from 0.1 to 1.0 x nominal current (I
n
)
± 1.0% of inputs from 1.0 to 40.0 x nominal current (I
n
)
Voltage
± 1.0% of inputs from 0.01 to 2.0 x nominal voltage (V
n
)
Impedance
±5.0% or 5 m
of set value from 0.05 to 66.00 ohms secondary (0.25 to 330.00 ohms sec-
ondary, 1 A nominal)
Directional Phase Angle
±2.0° of set value of Positive Sequence Line Angle value from 25.0° to 89.0°
Frequency Elements
±0.001 Hz (fixed level)
±0.05 Hz (df/dt)
Sync Check Elements
±0.2 degrees
Timers
±3 ms of set value
Inverse Overcurrent Timers
±2.5% or ±1 cycle of selected curve
Definite Overcurrent Timers
±2.5% or ±1 cycle non-directional
±2.5% or ±1.5 cycle directional
Frequency Timer
±2.5% of set value plus 1.25 cycles to 1.75 cycles of inherent delay (fixed level)
at 2x pickup, error <40 ms (df/dt)
at 0.1 Hz/s above pickup, error <100 ms
L-PRO Model 4000 Specifications
Summary of Contents for L-PRO 4000
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