IB02602004E
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Instructional Literature
Effective: May 2008
Page
209
Instructions for the FP-6000 Protective Relay
13.2 Display Abbreviations
13.3 Standard IEEE Device Numbers
Standard IEEE Device Numbers for power devices are covered
under IEEE document, IEEE Standard Electrical Power System
Device Function Numbers and Contact Designations, # C37.2-
1996, ISBN 0-7381-0732-8.
Some typical device numbers are used frequently within this
document and throughout Eaton’s product and other
documentation. For a complete list, please see the IEEE
document referenced above.
Apt
Apparent
Aux
Auxiliary
Dsp
Displacement
Config
Configuration
Ctr
Control or counter depending on context
Fwd
Forward
L-N
Line to neutral
L-L
Line to line
LOP
Loss of potential
LOPB
Loss of potential block
Mag
Magnitude
Rev
Reverse
OC
Over current
Rst
Reset
rms
Root means square
Varh
Var-hour
Wh
Watt-hour
AR
Autoreclose
VR
Residual Voltage
VR1
Fundamental Residual Voltage Phasor
VR3
Third Residual Voltage Harmonic
Device
Number
Description (Function)
25.
Sync-Check Function
Operates when two ac circuits are within the desired limits of frequency, phase angle or
voltage, to permit or to cause the paralleling of these two circuits.
27.
Undervoltage Relay
Relay that operates when the voltage drops below a programmed value.
32.
Power Protection
Functions on a desired value of power flow in a given direction or upon reverse power.
46.
Reverse-Phase, or Phase-
Balance,Current Relay
Relay which functions when the polyphase currents are of reverse-phase sequence, or when
the polyphase currents are unbalanced or contain negative phase-sequence components
above a given amount.
47.
Phase-Sequence Voltage
Relay
Functions upon a predetermined value of polyphase voltage in the desired phase sequence.
50.
InstantaneousOvercurrent,
or Rate-of-Rise Relay
Relay that functions instantaneously on an excessive value of current, or on an excessive
rate of current rise, thus indicating a fault in the apparatus or circuit being protected.
51.
ac Time OverCurrent Relay Relay with either a definite or inverse time characteristic that functions when the current in
an ac circuit exceeds a predetermined value.
52.
ac Circuit Breaker
Device that is used to close and interrupt an ac power circuit under normal conditions or to
interrupt this circuit under fault or emergency conditions.
55.
Power Factor Relay
Relay that operates when the power factor in an ac circuit rises above or below a
predeterminated direction
59.
Overvoltage Relay
Relay that operates when the voltage rises above a programmed value.
67.
Directional Overcurrent
Relay that functions on a desired value of ac overcurrent flowing in a predeterminated
direction.
81.
Frequency Relay
Relay that operates when the frequency falls outside a programmed range.
