
5.4
SEL-700G Relay
Instruction Manual
Date Code 20170814
Metering and Monitoring
Metering
All angles are displayed between –180 and +180 degrees. The angles are
referenced to VABn, VANn (for delta- or wye-connected PT, respectively), or
IAn (n = X or Y). If the voltage channels are not supported, if VABn < 13 V
(for delta-connected PT), or if VANn < 13 V (for wye-connected PT), the
angles are referenced to IAn current. If the relay includes both X and Y-side
quantities, the angles are referenced to the X-side quantity. Figure 5.2 shows
an example of the METER command report.
➤
Power and Power Factor (single phase quantities for WYE connected PTs only):
➢
Single-phase (PAY, PBY, PCY) and three-phase (P3Y) real power (kW)
➢
Single-phase (QAY, QBY, QCY) and three-phase (Q3Y) reactive power (kVAR)
➢
Single-phase (SAY, SBY, SCY) and three-phase (S3Y) apparent power (kVA)
➢
Single-phase (PFAY, PFBY, PFCY) and three-phase (PF3Y) power factor (lead/lag)
➤
Frequency (FREQY) in Hz.
Other Quantities
(model dependent)
➤
Synchronism-check voltage input (VS) magnitude (V primary) and phase angle (degrees) and fre-
quency (FREQS) in Hz
➤
Neutral voltage input (VN) magnitude (V primary) and phase angle (degrees)
➤
Third harmonic voltages for stator ground element 64G (Wye-connected X-side PTS only): Third
harmonic voltages VPX3 (VPX3 = VAX3 + VBX3 + VCX3) and VN3 (V primary); Field ground
insulation resistance Rf in kilohms
a
(requires SEL-2664 Field Ground Module)
a
Field ground insulation resistance, Rf, will read FAIL when E64F = Y and the data are invalid.
Table 5.1
Measured Fundamental Meter Values
(Sheet 2 of 2)
Relay Option
Fundamental Meter Values
=>
MET <Enter>
SEL-700G Date: 02/24/2010 Time: 11:43:44.875
GENERATOR RELAY Time Source: Internal
IAX IBX ICX IGX I1X 3I2X
Mag (A pri.) 505.1 501.2 499.4 6.9 501.9 3.2
Angle (deg) -30.0 -149.9 89.9 -44.8 -30.0 -4.0
IAY IBY ICY IGY I1Y 3I2Y
Mag (A pri.) 500.7 502.5 500.1 9.2 501.1 4.9
Angle (deg) 150.0 30.6 -89.1 40.7 150.5 83.8
IN
Mag (A pri.) 0.0
Angle (deg) 143.8
VAX VBX VCX VGX V1X 3V2X
Mag (V pri.) 9978.0 9982.1 9986.7 53.6 9982.2 38.6
Angle (deg) 0.0 -120.3 120.0 151.5 -0.1 27.1
VS VN
Mag (V pri.) 0.0 0.00
Angle (deg) -102.7 16.9
VN3 VPX3
Mag (V pri.) 0.66 3.94
AX BX CX 3PX
Real Pwr (kW) 4362 4348 4312 13023
Reactive Pwr (kVAR) 2523 2474 2505 7503
Apparent Pwr (kVA) 5040 5003 4987 15029
Pwr Factor 0.87 0.87 0.87 0.87
LAG LAG LAG LAG
FREQX FREQS
Frequency (Hz) 60.00 60.00
V/Hz (%) 100.5
Field Resistance (kOhm) 19276.6
=>
Figure 5.2
METER Command Report for SEL-700G1 With Synchronism
Check and Neutral Voltage Inputs
Summary of Contents for SEL-700G Series
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