Connecting A Voltage Probe And Clamp-On Probe - YOKOGAWA CW500 Getting Started Manual

Connecting a Voltage Probe and Clamp-on Probe

● Use the supplied voltage probes.
● Use exclusive current clamp-on probes for the CW500. And,
be sure to check that the measurement current and rating are
matched.
● Never connect voltage probes or current clamp-on probes that
are not necessary for the measurement that you are taking.
● When connecting a probe, be sure to connect the CW500 end
first. Firmly insert the probe up to the base. Do not connect to
the measurement line when the probe is not connected to the
CW500.
● Never remove the probe from the main unit connector while
measuring (power running from the measurement line).
● Connect the probe after checking that the instrument is turned
off.
● If the probe and the measurement category of the main unit
are mismatched, measure using the measurement category
with the lower measurement voltage.
● Be careful not to short the power supply line with the metal
section of the voltage probe tip when wiring. Never touch the
metal part at the tip.
● Be sure to use the CW500 on the secondary side of the VT
(voltage transformer) and CT (current transformer).
● While current is flowing, be sure not to open the secondary
side of the CT. If it is opened, high voltage will appear at the
secondary side, making it extremely dangerous.
● Operate according to the user's manual for the current clamp-
on probe that you are using.
IM CW500-02EN
WARNING
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