Mindray uMEC12 - Patient Leakage Current; Mains on Applied Part Leakage

E-4
E.6 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)
LIMITS
For CF applied parts
 10A in Normal Condition
 50A in Single Fault Condition
For BF
applied parts
 100A in Normal Condition
 500A in Single Fault Condition
E.7 Mains on Applied Part Leakage
The Mains on Applied Part test applies a test voltage, which is 110% of the mains voltage,
through a limiting resistance, to selected applied part terminals. Current measurements are
then taken between the selected applied part and earth. Measurements are taken with the
test voltage (110% of mains) to applied parts in the normal and reverse polarity conditions
The following outlet conditions apply when performing the Mains on Applied Part test.
 Normal Polarity
 Reversed Polarity
LIMITS
 For CF applied parts: 50 A
 For BF
applied parts: 5000 A