Mindray M7T - Earth Leakage Test Procedures; Enclosure Leakage Test Procedures; Patient Leakage Current Measurement

Electrical Safety Inspection D-3
D.5 Earth Leakage Test
Run an Earth Leakage test on the device being tested before performing any other
leakage tests.
The following outlet conditions apply when performing the Earth Leakage test.
 normal polarity( Normal Condition);
 reverse polarity( Normal Condition);
 normal polarity with open neutral(Single Fault Condition);
 reverse polarity with open neutral(Single Fault Condition).
 LIMITS
For UL60601-1,
 300 µA in Normal Condition.
 1000 µA in Single Fault Condition.
For IEC60601-1,
 500 µA in Normal Condition.
 1000 µA in Single Fault Condition.
D.6 Enclosure Leakage Test
The following outlet conditions apply when performing the Enclosure Leakage test.
 normal polarity( Normal Condition);
 reverse polarity( Normal Condition);
 normal polarity with open neutral(Single Fault Condition);
 reverse polarity with open neutral(Single Fault Condition);
 normal polarity with open earth(Single Fault Condition);
 reverse polarity with open earth(Single Fault Condition).
 LIMITS
For UL60601-1,
 100µA in Normal Condition.
 300 µA in Single Fault Condition.
For IEC60601-1:
 100µA in Normal Condition.
 500 µA in Single Fault Condition.
D.7 Patient Leakage Current
Patient leakage currents are measured between a selected applied part and mains earth.
All measurements have a true RMS only.
The following outlet conditions apply when performing the Patient Leakage Current test.
 normal polarity( Normal Condition);
 reverse polarity( Normal Condition),
 normal polarity with open neutral(Single Fault Condition);
 reverse polarity with open neutral(Single Fault Condition).
 normal polarity with open earth(Single Fault Condition);
 reverse polarity with open earth(Single Fault Condition).