ULTRATHERM 908i
23
gbo Medizintechnik AG 2004
Version 1.2
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After the termination of treatment time separate the unit from the mains for about 1 min.
4.11. Final test
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The final test is to be performed immediately after the continuous operation in the hot
condition.
4.11.1. High-voltage test
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The test is to be performed in accordance with DIN VDE 0750, Part 1, and DIN VDE 0750,
Part 204.
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Connect the unit to be tested to the high-voltage testing device.
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Switch on („I“) mains switch S001.
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Apply the test voltage of 1.5 kV, 50 Hz, to the contact positions of the testing device for 1 min.
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In way of substitution, the test can also be performed with the pins of the power cord plug
short-circuited and by applying the test voltage between this short-circuit jumper and the
earthing contact of the power cord plug.
•
The applicators are tested with a voltage of 4 kV.
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Record the test result.
4.11.2. Measurement of the leakage current of the casing
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The test is to be performed in accordance with DIN VDE 0750, Part 1, and DIN VDE 0750,
Part 204.
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Connect the unit to be tested to the leakage-current measuring device.
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Switch on („I“) mains switch S001.
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Measure the leakage current of the casing at a rated voltage of 253 V. Record the maximum
measurement value, I
leak/max
= 0.5 mA.
•
Perform the measurement of the leakage current of the casing according to DIN 57 751/VDE
0751.
Record the measurement values.
4.11.3. Earthing conductor test
•
The test is to be performed in accordance with DIN VDE 0750, Part 1, and DIN VDE 0750,
Part 204.
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Connect the unit to be tested to the earthing-conductor testing device.
