Megger MPQSIM, Руководство пользователя

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M
Harmonic Effect on Power
Verify the Power Quality instrument connected to the simulator is programmed to
record power in a 4-wire wye 3-wattmeter configuration.
Method # 1 Real Time Demand DVM Screen
1. Verify the controls are set to their initial settings.
2. Set the Phase A, B and C Current Phase Angle selector switches to 30
°
.
3. View the real time demand (DVM screen) and note the Apparent Power (KVA),
the Active Power (KW) and the Reactive Power (KVAR).
NOTE: The Power Triangle holds true
S = Apparent Power
P = Active Power
Q = Reactive Power
4. Set the voltage and current harmonic switches to ON.
5. View the real time demand (DVM screen) and note the Apparent Power (KVA),
the Active Power (KW) and the Reactive Power (KVAR).
NOTE: The power triangle now has increased errors. This shows that power
triangle does not hold true for non-sinusoidal waveforms.
Method # 2 Recording Data
1. Verify the Power Quality instrument connected to the simulator has a
programmed demand interval of no more than 1 minute. This simulation will
require that at least 6 demand intervals are captured. The longer the demand
interval the longer this test will take.
2. Verify the controls are set to their initial settings.
3. Set the Phase A, B and C Phase Angle selector switches to 30
°
.
4. Start the unit recording.
5. Allow the unit to record for at least 3 demand intervals.
6. Set the voltage and current harmonic switches to ON.
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