Sel 2414 - Page 231

10.9
Date Code 20130214 Instruction Manual SEL-2414 Transformer Monitor
Testing and Troubleshooting
Functional Testing
Step 3. Using the front-panel SET/SHOW or the serial port SHOW
command, record the CTR1, PTR, and PHROT setting values.
Step 4. Apply the current and voltage quantities shown in column 1 of
Table 10.7. and Table 10.8.
Step 5. Use the front-panel METER function or the serial port MET
command to verify the results.
Delta-Connected Voltages
When using delta-connected PTs, the device reports the current angle with refer-
ence to VAB. Perform the following steps to test delta-connected voltages:
Step 1. Connect the current source to the device as shown in Figure 10.5.
Step 2. Connect the voltage source to the device as shown in Figure 10.7.
Make sure that the voltage setting is set to DELTA_Y = Delta.
Figure 10.6 Wye Voltage Source Connections
Table 10.7 Current and Voltage Quantities for PHROT = ABC
Applied Currents
and Voltages
Real Power
(kW)
Reactive Power
(kVAR)
Power Factor (pf)
IA = 2.5 ∠ –26 Expected
P = 0.4523 •
CTR • PTR
Expected Q = 0.219 •
CTR • PTR
Expected pf = 0.9 lag
IB = 2.5 ∠ –146
IC = 2.5 ∠ 94
VA = 67 ∠ 0 Measured: Measured: Measured:
VB = 67 ∠ –120
VC = 67 ∠ 120
Table 10.8 Current and Voltage Quantities for PHROT = ACB
Applied Currents
and Voltages
Real Power
(kW)
Reactive Power
(kVAR)
Power Factor (pf)
IA = 2.5 ∠ –26 Expected
P = 0.4523 •
CTR • PTR
Expected Q = 0.219 •
CTR • PTR
Expected pf = 0.9 lag
IB = 2.5 ∠ 94
IC = 2.5 ∠ –146
VA = 67 ∠ 0 Measured: Measured: Measured:
VB = 67 ∠ 120
VC = 67 ∠ –120
SEL-2414
VA
VB
VC
VN
E01
E02
E03
E04
Voltage
Test
Source