BC Biomedical SA-2010 Instrukcja Użytkownika Pobierz pdf (Strona 20)

As each lead and then All leads are selected, depress and hold the “ISO” Test key.

This will apply 110% of the line voltage through a 121 kΩ resistor to the selected lead(s)

and measure the current that flows to Earth/Ground through a 1000 Ω load with either

AAMI ES1-1993 or IEC 601 frequency compensation as selected by the Load Selection

switch.

This test is to be done for each lead individually and All leads together.

This test measures the leakage current that would flow through the lead(s) if the patient

were to come into contact with Line voltage. This is referred to as MAP (MAINS on

Applied Parts).

Point to Point Measurements

The unit has the ability to measure Leakage Current, Isolation Leakage Current and

Resistance between two points, utilizing two test leads. These tests are separated

because they use a slightly different setup than the previous tests.

Point to Point Leakage Current

With the External function selected, the display will show the leakage current between

the test leads.

The test requires that the Chassis Test lead be plugged into the Chassis Connector and

the External Test lead be plugged into the External Connector. The other ends of the

leads are then attached to the points of interest.

Any current flowing between the test points is passed through a 1000 Ω load with either

AAMI ES1-1993 or IEC 601 frequency compensation as selected by the Load Selection

switch.

Point to Point Isolation Leakage Current

With the External function selected and the “ISO” Test key depressed, the display will

show the isolation leakage current between the test leads.

WARNING

The SA-2010 applies 110% of line voltage to the

Patient leads or External test leads during the

Isolation test. Although this is current limited by

a 121 kΩ internal resistor, per standard test

specifications, care should be taken to prevent

contact with this voltage. Do not touch the test

leads, connections or DUT while depressing the

Isolation Test key.

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BC Biomedical SA-2010 Instrukcja Użytkownika Strona 20