SIMPRO-100
Commissioning
7
PRIM-2400C 109
Table 7.12 Power Measuring Accuracy Test Values, Wye Voltages
7.3.8.2 Accuracy Test, Delta Voltages
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, page 104).
2. Using the front-panel Set Relay\Relay
Elements\General Data function or serial port
SHOW command, note the CTR, PTR, and
PHROT settings.
3. Referring to Figure 7.4, page 104, 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.
Applied Currents
and Voltages
Real Power
(kW)
Reactive Power
(kVar)
Power Factor
(pf)
PHROT = ABC
Expected:
P = 0.4523 • CTR • PTR
Expected:
Q = 0.2211 • CTR • PTR
Expected:
pf = 0.90 lag
Ia = 2.5 A ∠-26°
Ib = 2.5 A ∠-146°
Ic = 2.5 A ∠94°
Va = 67 V ∠0°
Measured: Measured: Measured:
Vb = 67 V ∠-120°
Vc = 67 V ∠120°
PHROT = ACB
Expected:
P = 0.4523 • CTR • PTR
Expected:
Q = 0.2211 • CTR • PTR
Expected:
pf = 0.90 lag
Ia = 2.5 A ∠-26°
Ib = 2.5 A ∠94°
Ic = 2.5 A ∠-146°
Va = 67 V ∠0°
Measured: Measured: Measured:
Vb = 67 V ∠120°
Vc = 67 V ∠-120°
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