Conair A1-7.5 User Manual download pdf (Page 17)

EMC Report No: 3109178NYM-005

Page 17

5.2.7 EN 61000-4-11 Voltage Dips and Interruptions

The test sample was connected to the test equipment, as shown in Figure 5.2.7, and monitored for

performance. The EUT shall be tested for each selected combination of test level and duration with a

sequence of three dips/interruptions with intervals of 10 seconds minimum between each event. Each

representative mode of operation shall be tested.

For three-phase systems, phase-by-phase test is preferred. In certain cases e.g. three-phase meters and three-

phase power-supply equipment, all the three phases must be simultaneously tested. In the case of

simultaneous application of dips or interruptions on all three phases, the zero crossing condition of the voltage

will be fulfilled only on one phase.

Figure 5.2.7 Power Line Voltage Drops and Interrupts Susceptibility

Voltmeter

Oscilloscope

EUT

Power Amplifier

Wave-Form

Generator

Controller

Phase

Neutral

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 25 26

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Conair A1-7.5 User Manual Page 17