Fluke Biomedical ESA180 - Manual (Page 37)

Operation, Maintenance, and Service
Point-to-Point Measurements
2
2-15
Use the following steps to measure leakage current between two points:
1. To isolate the measurement circuit from ground, do not plug any device
into the Analyzer's receptacle.
2. Connect the black cable with the clamp with black insulation to the
CHASSIS connector and the black cable with the clamp with red
insulation to the DUAL connector.
3. Set the FUNCTION switch in the DUAL position.
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
fat11.eps
4. Clip the two cables to the two points for which the leakage current is to be
measured. The meter displays the leakage current between the two points
to 1999 µA. The number displayed is also the voltage gradient in
millivolts between the two points based on a volt meter with an input
impedance of 1000
Ω .
Isolation Current
Isolation testing of probes and transducers making internal contact to a patient
is provided to ensure the reliability of the isolation barrier. These devices
incorporate electrical circuits that can introduce or sink hazardous currents to a
patient who comes into contact with line potential or who becomes grounded,
as previously described.
Use the following steps to measure isolation current between two points:
1. To isolate the measurement circuit from ground, do not plug any device
into the Analyzer's receptacle.