Schweitzer Engineering Laboratories SEL-700G Series, Instruction Manual

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10.11
Date Code 20170814 Instruction Manual SEL-700G Relay
Testing and Troubleshooting
Commissioning Tests
Step 4. Apply the current and voltage quantities shown in Column 1 of
Table 10.6.
Values are given for PHROT := ABC and PHROT := ACB.
Step 5. Use the front-panel
METER
function or the serial port MET
command to verify the results.
Delta-Connected Voltages
Perform the following steps to test delta-connected voltages:
Step 1. Connect the current source to the relay, as shown in Figure 10.5
or Figure 10.6.
Step 2. Connect the voltage source to the relay, as shown in
Figure 10.8. Make sure that DELTAY_m := DELTA
(m = X or Y).
Figure 10.8 Delta Voltage Source Connections
Step 3. Using the front-panel
SET/SHOW
or the serial port SHOW
command, record the CTRm, PTRm, and PHROT setting
values.
Table 10.6 Power Quantity Accuracy—Wye Voltages
a
Applied Currents and
Voltages
b
Real Power
(kW)
Reactive Power (kVAR)
Power Factor
(pf)
PHROT := ABC
IAm = 2.5

IBm = 2.5

146
ICm = 2.5

+94
Expected:
3Pm = 3 • 2.5 • 67 • 0.899
• CTRm • PTRm/1000
Expected:
3Qm = 3 • 2.5 • 67 • 0.438
• CTRm • PTRm/1000
Expected:
pf = 0.90 lag
VAm = 67

0
VBm = 67

120
VCm = 67

+120
Measured: Measured: Measured:
PHROT := ACB
IAm = 2.5

26
IBm = 2.5

+94
ICm = 2.5

146
Expected:
3Pm = 3 • 2.5 • 67 • 0.899
• CTRm • PTRm/1000
Expected:
3Qm = 3 • 2.5 • 67 • 0.438
• CTRm • PTRm/1000
Expected:
pf = 0.90 lag
VAm = 67

0
VBm = 67

120
VCm = 67

120
Measured: Measured: Measured:
a
The displayed quantities are model dependent.
b
m = X or Y.
SEL-700G
(Slot E or Z)
09
10
11
12
Voltage
Test
Source
VA
VB
VC
VN