Megger MPQSIM, Руководство пользователя

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PRODUCT OPERATION
AVTMMPQSIM Rev 1 May 2017
19
Active Power vs. Reactive 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. View the real time demand (DVM screen) and note the KW displays a value and
the KVAR is near 0.
3. Set any of the Current Phase Angle selectors to 30° from its nominal angle.
(-30° for Phase A, 90° for Phase B or 210° for Phase C)
NOTE: The KW value for the selected channel goes down while the KVAR
value goes up. As inductive load is added the phase angle increases which
reduces the active power and increases the reactive power.
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. Start the unit recording.
4. Allow the unit to record for at least 2 demand intervals.
5. Set any of the Current Phase Angle selectors to 30° from its nominal angle.
(-30° for Phase A, 90° for Phase B or 210° for Phase C)
6. Allow the unit to record for at least 2 demand intervals.
7. Set the Current Phase Angle Selectors back to their nominal angles
(0°, 120° and 240°).
8. Allow the unit to record for at least 2 demand intervals.
9. Stop the recording.
10. View the Active Power (KW) and Reactive Power (KVAR).
NOTE: As the phase angle increases the reactive power increases and the active
power decreases.