Schweitzer Engineering Laboratories SEL-751 - Table 5.2 Thermal Meter Values

5.5
Date Code 20170927 Instruction Manual SEL-751 Relay
Metering and Monitoring
Metering
Thermal Metering
The thermal metering function reports the present values of RTD input
temperatures and several quantities related to the cable/line thermal protection
function. Table 5.2 shows the thermal meter values. To enter a starting thermal
capacity or to reset the thermal capacity, use the THE command (See
Figure 7.32.).
The thermal meter function also reports the state of connected RTDs, if any
have failed. Table 5 .3 shows the failure messages and their meanings.
=>>MET <Enter>
SEL-751 Date: 02/23/2012 Time: 00:47:50.504
FEEDER RELAY Time Source: Internal
IA IB IC IN IG I1
Mag (A pri.) 1809.0 1804.0 1806.7 120.8 18.8 1806.5
Angle (deg) -2.9 -122.5 117.9 -1.5 -116.6 -2.5
Ave Curr Mag (A pri.) 1806.6
Neg-Seq Curr 3I2 (A pri.) 26.3
Current Imb (%) 0.1
VAB VBC VCA V1 VS
Mag (V pri.) 20851.0 20845.6 20965.8 12059.3 12238.0
Angle (deg) 30.2 -89.5 150.4 0.4 -2.8
VA VB VC VG
Mag (V pri.) 12056.9 12060.9 12060.8 140.9
Angle (deg) 0.0 -119.7 120.8 -124.6
Avg Phase (V pri.) 12060
Neg-Seq Volt 3V2 (V pri.) 135.9
Voltage Imb (%) 0.0
A B C 3P
Real Pwr (kW) 21783 21732 21763 65278
Reactive Pwr (kVAR) 1097 1068 1071 3236
Apparent Pwr (kVA) 21811 21758 21790 65359
Pwr Factor 1.00 1.00 1.00 1.00
LAG LAG LAG LAG
FREQ FREQS
Frequency (Hz) 59.99 59.99
VDC (V) 27.0
=>>
Figure 5.2 METER Command Report With Voltage/Arc-Flash Detection
2 AVI/4 AFDI Card in Slot E and 4 ACI/3 AVI Card in Slot Z
Table 5.2 Thermal Meter Values
Relay Option Thermal Values
a
a
where n = 1, 2, or 3.
With External SEL-2600 RTD Module
or Internal RTD Option
All RTD Temperatures
All Models Thermal Element n Current (THIEQn pu)
Thermal Element n TCU (THTCUn %)
Thermal Element n Trip Time (THTRIPn s)
Thermal Element n Release Time (THRLSn s)