4. ESU Tests with QA-ES
This chapter explains the tests that can be conducted by the QA-ES
on an ESU, as well as the features available with the PRO-Soft QA-
ES software accessory.
4.1 Power Distribution
This test checks the power provided by the ESU over a range of load
resistances. The QA-ES allows you to specify a range of loads, over
which you test the ESU output power to see if it is within the speci-
fied limits.
Per IEC 601-2-2 the power output cannot be reduced by more than
10W, or 5% of the minimum power output level. Per ANSI/AAMI
HF18-1993 the power output must be within 20% of the ESU manu-
facturer’s specifications.
Load Resistance Range
Equipment
IEC ANSI/AAMI
Monopolar 100 - 1000 ohms 50 - 2000 ohms
Bipolar 10 - 500 ohms 10 - 1000 ohms
Test setup for ESU power distribution test:
4.2 HF Current Leakage
This test checks to see whether or not the active and dispersive leak-
age currents are within acceptable limits. There are four test setups
to accomplish this testing.
Per IEC 601-2-2 and ANSI/AAMI HF18-1993 the ESU shall be op-
erated at the maximum output setting in each operating mode. The
limits for the acceptable leakage currents depend upon the test con-
figuration.
Test Configuration Limits of Acceptable Leakage Current
Measured on electrodes The leakage current should not exceed 150 mA
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