Fluke Biomedical ESA180 - Manual (Page 27)

Operation, Maintenance, and Service
Measuring Line Voltage
2
2-5
WX Warning
To avoid electrical shock due to faulty DUT, DO NOT touch
the metal chassis, any accessible conductive part, or
terminal of the DUT with mains power applied until all
applicable tests have been completed and the product is
verified as compliant. Keep fingers behind guards on
supplied test accessories and/or remove power from the
DUT before making necessary connections.
Measuring Line Voltage
Line Voltage [VL] is the mains power supplied by the electrical distribution
system of the hospital. It is a three-wire system of HOT, NEUTRAL, and
GROUND, with NEUTRAL, like GROUND, returned to true earth at their
entry into the building.
The Analyzer measurement is made between the HOT and NEUTRAL wires
via transformer coupling to isolate the measuring circuits from the line. As
recommended, measurement of the line voltage with the device under test
(DUT)
OFF and then ON indicates whether the line is adequate for the device.
Use the following steps to measure line voltage:
1. From the recommended start position, with the FUNCTION switch in the
V - LINE VOLTS position, observe that the meter displays the line
voltage with a resolution of one volt.
V V
A
A
µA µA
L
E
A
K
A
G
E
- CURRENT - CURRENT
- RESISTANCE - RESISTANCE
- GROUND - GROUND
- CHASSIS - CHASSIS
- LEAD -GND - LEAD -GND
- LEAD -LEAD - LEAD -LEAD
- LEAD ISO - LEAD ISO
- DUAL - DUAL
- LINE VOLTS - LINE VOLTS
- CURRENT - CURRENT
- RESISTANCE - RESISTANCE
- GROUND - GROUND
- CHASSIS - CHASSIS
- LEAD -GND - LEAD -GND
- LEAD -LEAD - LEAD -LEAD
- LEAD ISO - LEAD ISO
- DUAL
- DUAL
fat03.eps
2. With the OUTLET switch in the NORMAL position and the DUT turned
on, the meter continues to display line voltage, but under the load of the