Fluke Biomedical ESA180 - Manual (Page 35)

Operation, Maintenance, and Service
Measuring Leakage Current
2
2-13
Note
The ALL position has no meaning in this test.
4. Make measurements under all combinations of the OUTLET switch,
NORMAL and REVERSE ; GROUND CLOSED and the LIFT
GROUND switch OPEN ; and the device power turned ON and OFF .
5. If the DUT utilizes a 10-lead patient input, test each C (V) lead in turn,
individually.
Lead Isolation (Patient Sink) Current
Lead Isolation [I
I
] (patient sink) current would flow into the DUT if the patient
were to come into contact with full line voltage. An example is an electric bed
that has become ungrounded and has a short to the frame.
WX Warning
To avoid possible electric shock, burning of the skin, or
personal injury to the patient, take care when handling the
patient leads. High voltage, 110 percent of line volts, with
respect to earth ground is accessible at the patient
connections (snaps) during part of this test. The patient
lead isolation current can flow in individual leads or all
leads connected together if line volts come into contact
with the patient.
Use the following steps to measure lead isolation current:
1. Attach the patient leads to the snaps on top of the Analyzer, making sure
that ground is intact.
2. Set the FUNCTION switch in the LEAD ISO position.