2
HIOKI's
new technology
enhances voltage measurement safety
Development of the SAFETY HiTESTER 3258 opens the door to a new realm of safety by accurately
measuring non-destructively through wire insulation, a particular safety concern to those who maintain and
inspect electrical facilities
Safe Probe Heads
True RMS values on large, crystal-clear display
Data Hold Indicator
Shows when data is being held
(HOLD button pressed)
APS Indicator (Auto Power Shutoff)
The HiTESTER automatically shuts off when 10
minutes have elapsed from the last operation (can
be disabled)
AC Indicator
Low Battery Indicator
Reliably safe, non-metallic resin heads
Measured Value
Voltage Unit
Indicator
True RMS values retain accuracy despite waveform distortion
Voltage Detector
Power Button
Safety Barrier
Easy operation and informative display
1. Hot line check
The HOLD lamp flashes when an energized line (at least 30 V AC) is detected.
Applicable electric cable types
Size: 38 mm
2
or larger insulated electric line
(100 mm
2
or larger recommended)
Actual-size cross sections
Hot Line
Indicator
2. Measured value
When the display has stabilized, the HOLD lamp lights and the measured value is
displayed.
Measured
Value
38 mm
2
(11.5 mm dia.) insulated cable
3. Hold measured value
Press the HOLD button to temporarily freeze the displayed value.
Lamp turns off
100 mm
2
(17 mm dia.) insulated cable
Measurement
Hold
ASM-SENSOR [ ASM GMBH ]
