701 Motor Protection Relay Date Code 20010719
Commissioning
Selected Functional Tests
7.20
Step 2. Using the front-panel Set Relay\Relay Elements\General Data
function or serial port SHOW command, note the CTR, PTR, and
PHROT settings.
Step 3. Referring to Ta bl e 7.1 6, set the current and voltage source
magnitudes. The phase angles you should apply depend on the
PHROT setting. Use the front-panel Meter Values\Instantaneous
Meter function to verify the relay measurements.
Table 7.16 Pow er Measuring Acc uracy Test Values, Wye Voltages
Accuracy Test, Delta Voltages
Step 1. Connect the current sources to the IA, IB, and IC current inputs
(5 A or 1 A, as indicated by the ITAP setting). Connect the voltage
sources to the voltage inputs in delta configuration. Refer to
Figure 7.4 on page 7.10.
Step 2. Using the front-panel Set Relay\Relay Elements\General Data
function or serial port SHOW command, note the CTR, PTR, and
PHROT settings.
Step 3. Referring to Figure 7.4 on page 7.10, set the current and voltage
source magnitudes. The phase angles you should apply depend on the
PHROT setting. Use the front-panel Meter Values\Instantaneous
Meter function to verify the relay measurements.
Table 7.16 Power Measuring Accuracy Test Values, Wye Voltages
Applied Currents
and Voltages
Real Power (kW)
Reactive
Power (kVar)
Power Factor (pf)
PHROT = ABC
Ia = 2.5 A ∠–26°
Ib = 2.5 A ∠–146°
Ic = 2.5 A ∠94°
Va = 67 V ∠0°
Vb = 67 V ∠–120°
Vc = 67 V ∠120°
Expected:
P = 0.4523 •
CTR • PTR
Measured:
Expected:
Q = 0.2211 •
CTR • PTR
Measured:
Expected:
pf = 0.90 lag
Measured:
PHROT = ACB
Ia = 2.5 A ∠–26°
Ib = 2.5 A ∠94°
Ic = 2.5 A ∠–146°
Va = 67 V ∠0°
Vb = 67 V ∠120°
Vc = 67 V ∠–120°
Expected:
P = 0.4523 •
CTR • PTR
Measured:
Expected:
Q = 0.2211 •
CTR • PTR
Measured:
Expected:
pf = 0.90 lag
Measured:
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