Hioki 3255-50 HiTESTER, Instruction Manual

Page: 13 / 52

9
Usage Notes
For other precautions and details, see explana-
tions of the measurement procedures.
When measuring a breaker
Voltage Measurement
Connection and Measurement
Use only the specified test lead or clamp-on probe.
Using a non-specified cable may result in incorrect
measurements due to poor connection or other
reasons.
This product should only be connected to the
secondary side of a breaker, so the breaker
can prevent an accident if a short circuit
occurs. Connections should never be made
to the primary side of a breaker, because
unrestricted current flow could cause a seri-
ous accident if a short circuit occurs.
• The maximum input voltage is 1000
VDC,1000 Vrms(sin), or 10
7
V•Hz. Attempt-
ing to measure voltage in excess of the
maximum input could destroy the product
and result in personal injury or death.
• The maximum rated voltage between input
terminals and the ground is as follows;
(CAT II) DC 1000 V, AC1000 Vrms (sin) or
10
7
V•Hz
(CAT III) DC 600 V, AC600 Vrms (sin) or
10
7
V•Hz
Attempting to measure voltages exceeding
this level with respect to ground could
damage the product and result in personal
injury.