YOKOGAWA CL155 User Manual page 4

WARNING
●Never make measurement on a circuit above 750V AC or 1000V DC.
● Do not use the instrument in an atmosphere where any flammable or
explosive gas is present.
● Do not attempt to make measurement in the presence of flammable gasses,
fumes, vapor or dust. Otherwise, the use of the instrument may cause
sparking, which can lead to an explosion.
● Avoid using the instrument if it has been exposed to rain or moisture or if
your hands are wet.
●Do not exceed the maximum allowable input of any measurement range.
●Never open the battery compartment cover when making measurement.
● Do not use the instrument if there is any damage to the casing or when the
casing is removed.
● Do not turn the Function Selector switch with plugged in test leads
connected to the circuit under test.
● Do not install substitute parts or make any modification to the instrument.
Return the instrument to Yokogawa M&C or your distributor for repair or
re-calibration.
● Always switch off the instrument before opening the battery compartment
cover for battery replacement.
● Do not use the test leads that have deteriorated or are detective.
● Check the test leads continuity
WARNING
To avoid damage to the instrument or electric shock!
The restrictions on the maximum voltage level for which the CL155 testers can
be used, depend on the measurement categories specified by the safety
standards. These category specifications are formulated to protect operators
against transient impulse voltage in power lines.
Function
A
V, V
Input terminal-to-
ground voltage
IM CL155
Maximum Allowable Input
MEASUREMENT
CATEGORY II
AC 2000A rms
Measuring circuit
voltage:
AC 750V rms
AC 750V rms
/DC 1000V
AC 750V rms
/DC 1000V
MEASUREMENT
CATEGORY III
AC 2000A rms
Measuring circuit
voltage :
AC 600V rms
AC 600V rms
/DC 600V
MEASUREMENT
CATEGORY Ⅳ
AC 2000A rms
Measuring circuit
voltage :
AC 300V rms
AC 300V rms
/DC 300V
ii