GE M60 UR Series User Manual

GE Multilin M60 Motor Protection System 6-23
6 ACTUAL VALUES 6.3 METERING
6
6.3.7 TRACKING FREQUENCY
PATH: ACTUAL VALUES  METERING  TRACKING FREQUENCY
The tracking frequency is displayed here. The frequency is tracked based on the selection of the reference source with the
FREQUENCY AND PHASE REFERENCE setting in the SETTINGS  SYSTEM SETUP  POWER SYSTEM menu. See the Power
System section of chapter 5 for details.
6.3.8 FLEXELEMENTS
PATH: ACTUAL VALUES  METERING  FLEXELEMENTS  FLEXELEMENT 1(16)
The operating signals for the FlexElements are displayed in pu values using the following definitions of the base units.
 TRACKING FREQUENCY

TRACKING FREQUENCY:
60.00 Hz
 FLEXELEMENT 1

FLEXELEMENT 1
OpSig: 0.000 pu
Table 6–2: FLEXELEMENT BASE UNITS
CURRENT UNBALANCE
(Amp Unbalance)
BASE = 100%
dcmA BASE = maximum value of the
DCMA INPUT MAX setting for the two transducers configured
under the +IN and –IN inputs.
FREQUENCY f
BASE
= 1 Hz
PHASE ANGLE 
BASE
= 360 degrees (see the UR angle referencing convention)
POWER FACTOR PF
BASE
= 1.00
RTDs BASE = 100°C
SENSITIVE DIR POWER
(Sns Dir Power)
P
BASE
= maximum value of 3  V
BASE
 I
BASE
for the +IN and –IN inputs of the sources
configured for the sensitive power directional element(s).
SOURCE CURRENT I
BASE
= maximum nominal primary RMS value of the +IN and –IN inputs
SOURCE ENERGY
(Positive and Negative Watthours,
Positive and Negative Varhours)
E
BASE
= 10000 MWh or MVAh, respectively
SOURCE POWER P
BASE
= maximum value of V
BASE
 I
BASE
for the +IN and –IN inputs
SOURCE VOLTAGE V
BASE
= maximum nominal primary RMS value of the +IN and –IN inputs
STATOR DIFFERENTIAL
CURRENT
(Stator Diff Iar, Ibr, and Icr)
I
BASE
= maximum primary RMS value of the +IN and –IN inputs
(CT primary for source currents, and bus reference primary current for bus differential currents)
STATOR RESTRAINING
CURRENT
(Stator Diff Iad, Ibd, and Icd)
I
BASE
= maximum primary RMS value of the +IN and –IN inputs
(CT primary for source currents, and bus reference primary current for bus differential currents)
THERMAL MODEL
(Model Capacity Used)
(Model Motor Unbalance)
BASE =100%
THERMAL MODEL
(Model Lockout Time)
BASE = 10 minutes
THERMAL MODEL
(Thermal Model Load)
(Biased Motor Load)
BASE = 1.00 pu of FLA
THERMAL MODEL
(Trip Time on Overload)
BASE = 10 seconds

GE M60 UR Series Specifications

General

Type	Feeder Protection Relay
Frequency	50/60 Hz
Communication Protocols	Modbus RTU, Modbus TCP/IP, DNP3, IEC 61850
Display	LCD
Enclosure Rating	IP54
Mounting	Panel Mount
Current Rating	1 A / 5 A
Protection Functions	Overcurrent, Ground Fault, Frequency
Analog Outputs	Up to 2