Facom 720.P30 Guía De Instrucciones página 8

To reduce the risk of injury, read and understand these
safety warnings and instructions before using the tool. Keep
these instructions with the tool for future reference. If you
have any questions, contact your FACOM representative or
INTRODUCTION
This equipment is a high resolution clamp-on ac/dc mA current probe,
which has been designed for use with oscilloscope or multimeter for
accurate, non-intrusive AC and DC current measurements. It can accurately
measure currents with a resolution of 1mA from 5mA to 30A over the
frequency range of DC to 20kHz.
The extended measurement jaws allow performing measurements in a
narrow space. For dc current measurements, a thumbwheel on the Current
Probe is designed for zero adjustment.
For troubleshooting the electric or hybrid electric vehicles, current
measurement ( especially without interrupting the supply from the battery or
other current carrying conductors ) is more important and effective than
voltage measurement from a technical, economical and process point of
view.
The more important or essential checking points in electric or hybrid
electric vehicles than those of the conventional vehicles are as follows:
• Battery leakage current ( normally around 15mA ), when all systems are
turned off, which is used as a quality indicator in an Electrical Check Out
System for production line quality assurance testing or as a fault identifier
for the diagnostic units in large service centers.
• Current drain of the ECU controlling the ISG ( or ISA ) system, which is
as low as 10mA when ignition is turned off, should be measured without
disconnecting the battery cable to prevent the ECU from losing the stored
data.
* Basically, the ISG ( or ISA ) system is made of the following elements:
- A 3-Phase ac motor integrated into the internal combustion motor
- An ac/dc converter which rectifies the ac generated by the 3-Phase
motor
- A dc/ac converter that provides the required voltages
- The electronics driving the ISG system as a whole
- The energy management system ( ECU ) controlling the ISG
Rapid waveform tracking is also a key feature of this specially designed
Current Probe, which makes it useful, for example, for displaying and adjus-
ting currents in electronic fuel injectors. This Current Probe has a frequency
range of dc to 20kHz and a di/dt tracking capability in excess of 20A/μs.
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distributor.
03/07/2017 11:52:24