Schweitzer Engineering Laboratories SEL-749M - Table 5.3 RTD Input Status Messages; Figure 5.1 METER Command Report with Voltage Option; Figure 5.2 METER T Command Report with Rtds

5.3
Date Code 20080918 Instruction Manual SEL-749M Relay
Metering and Monitoring
Metering
The thermal meter function also reports the state of connected RTDs if any
have failed. Table 5.3 shows failure messages.
NOTE: If the overload protection is
disabled by setting E49MOTOR := N,
the relay will always report % Thermal
Capacity = 0 and Calculated Time to
Thermal Trip (sec) = 9999.
Figure 5.1 shows an example of the METER command report, and Figure 5.2
provides an example of the METER_T command report.
=>MET <Enter>
SEL-749M Date: 02/27/2007 Time: 14:38:35.344
MOTOR RELAY Time Source: internal
IA IB IC IN IG
Current Magnitude (A) 200.2 201.1 199.4 0.0 3.1
Current Angle (deg) -32.0 -151.8 88.6 93.7 -147.8
Average Current Magnitude (A) 200.2
Motor Load (xFLA1) 0.8
Negative-Seq. Current (3I2) (A) 1.2
Current Imbalance (%) 0.6
VAN VBN VCN VG
Voltage Magnitude L-N (V) 2377 2385 2388 39
Voltage Angle (deg) 0.0 -119.7 120.9 -143.6
Average Phase (V) 2383
Negative-Seq. Volt. (3V2) (V) 30.6
Voltage Imbalance (%) 0.1
Real Power (kW) 1212
Reactive Power (kVAR) 762
Apparent Power (kVA) 1432
Power Factor 0.85 LAG
Frequency (Hz) 60.0
=>
Figure 5.1 METER Command Report With Voltage Option
=>>MET T <Enter>
SEL-749M Date: 02/27/2007 Time: 17:04:56.974
MOTOR RELAY Time Source: internal
Max Winding RTD = 135 C
Max Bearing RTD = 123 C
Ambient RTD = 35 C
Max Other RTD = 23 C
RTD 1 BRG = 122 C
RTD 2 BRG = 123 C
RTD 3 BRG = 120 C
RTD 4 BRG = 119 C
RTD 5 WDG = 133 C
RTD 6 WDG = 132 C
RTD 7 WDG = 134 C
RTD 8 WDG = 135 C
RTD 9 WDG = 135 C
RTD 10 WDG = 132 C
RTD 11 AMB = 35 C
RTD 12 OTH = 23 C
Motor Load (xFLA) 0.7
Thermal Capacity Used (%) 55.0
RTD % Thermal Capacity Used (%) 0.0
Thermal Trip In (sec) 9999
Time to Reset (min) 0
Starts Available 3
=>>
Figure 5.2 METER T Command Report With RTDs
Table 5.3 RTD Input Status Messages
Message Status
Open RTD leads open
Short RTD leads shorted
Comm Fail Fiber-optic communications to SEL-2600 RTD module have failed
Stat Fail SEL-2600 RTD module self-test status failure
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