BC Biomedical SA-2001, Руководство пользователя

Страница: 12 / 23

11
Earth/Ground Leakage Current
With the Earth/Ground function selected and the Ground-Open, the display will show the
leakage current in the ground wire of the DUT. The display is in µAmps and will read from
0 to 1999.
Selecting this function automatically opens the connection to Earth/Ground and passes any
leakage current through a 1000 Ohms load with either AAMI ES1-1993 or IEC 601
frequency compensation as selected by the Load key.
The test should be performed for all receptacle switch combinations as called out in the
Test Matrix, or a subset of these based on the manufacturer’s specifications or local codes
and protocols.
NOTE: This test has no meaning for equipment that does not use a three-wire
(Earth/Grounded) power cord.
Enclosure Leakage
With the Enclosure function selected, the display will show the leakage current between the
Enclosure (Chassis) and Earth/Ground. The display is in µAmps and will read from 0 to
1999.
The test requires that the Black (Kelvin) test cable be plugged into the Chassis Socket. The
other end should be connected to a solid ground point on the DUT. Consult the equipment
manufacturer’s documentation for the recommended connection point.
NOTE: If a non-conductive enclosure is used, a 200 cm
2
conductive foil pad should be
used. This foil is to be placed in close contact with the enclosure and connected to the
Black lead.
Any leakage current will flow through the Black lead and then through a 1000 Ohms load
with either AAMI ES1-1993 or IEC 601 frequency compensation as selected by the Load
key.
The test should be performed for all receptacle switch combinations as called out in the
Test Matrix, or a subset of these based on local codes, facilities practices and equipment
manufacturers recommendations.