Hioki SAFETY HiTESTER 3258 Instruction manual

SAFETY HiTESTER 3258
Safely Measure Voltage Breaker Panels
nApplicability
Optimized for 30-600 V AC
nNew Technology
Measure voltage on insulated
electric cables
Measurable electrical cable:
100 mm2or thicker covered (un-
shielded) cables
(Cables thicker than
38mm2also supported at other accuracies )
nSafety
Measure safely around metal
busbars and terminals
CAT IV 600V

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 mea-
suring non-destructively through wire insulation, a particular safety concern to those who maintain and in-
spect electrical facilities
Voltage Detector
Easy operation and informative display
2. Measured value
When the display has stabilized, the HOLD lamp lights and the measured value is
displayed.
1. Hot line check
The HOLD lamp ashes when an energized line (at least 30 V AC) is detected.
Hot Line
Indicator
3. Hold measured value
Press the HOLD button to temporarily freeze the displayed value. Lamp turns off
Measured
Value
Measurement
Hold
Size: 100 mm2or larger insulated cables
100 mm2(17 mm dia.) insulated cable
Actual-size cross sections
Applicable electric cable types
Safe Probe Heads
Reliably safe, non-metallic resin heads
Low Battery Indicator
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
Voltage Unit
Indicator
Measured Value
True RMS values retain accuracy despite waveform distortion
True RMS values on large, crystal-clear display
Power Button
Safety Barrier
38 mm2(11.5 mm dia.) insulated cable
(Add 0.5% rdg. to standard accuracy)
(Not suitable for shielded cables)

3
Actual size
nEnsures safe measurements in the cubicle
nGet accurate measurements easily
The HiTESTER measures the voltage between two probes. To ensure accurate measurements, apply the volt-
age detector probes perpendicular to the object to be measured.
To measure voltage to ground, apply one probe to a ground conductor.
Also safe for metallic conductors
Conductor
Incorrect measurement
5
Correct measurement method
5
Safely measure 380-480 V AC lines
Long grip for better safety
Easily measure right through cable insulation Safely measure around busbars
Point 1 Point 2
Apply each voltage detector probe perpendicular to the
object to be measured.
Conductor
Conductor Conductor
Conductor
(Not suitable for shielded cables)

HEADQUARTERS
81 Koizumi, Ueda, Nagano, 386-1192, Japan
TEL [phone] FAX [phone]
http://www.hioki.com / E-mail: [e-mail]
HIOKI USA CORPORATION
TEL [phone] FAX [phone]
http://www.hiokiusa.com / E-mail: [e-mail]
All information correct as of July 1, 2017. All specications are subject to change without notice. 3258E5-77B Printed in Japan
DISTRIBUTED BY
HIOKI (Shanghai) SALES & TRADING CO., LTD.
TEL [phone] FAX [phone]
http://www.hioki.cn / E-mail: [e-mail]
HIOKI SINGAPORE PTE. LTD.
TEL [phone] FAX [phone]
E-mail: [e-mail]
HIOKI KOREA CO., LTD.
TEL [phone] FAX [phone]
E-mail: [e-mail]
Note: Company names and Product names appearing in this catalog are trademarks or registered trademarks of various companies.
AC Voltage Measurement Accuracy (on insulated PVC cables or equivalent, 100 mm2or thicker)
Ranges
(auto-ranging)
Displayable
range
Display
resolution
Range of guaranteed
accuracy
Accuracy
40 to 66 Hz 66 to 400 Hz
420.0 V
0.0 to 420.0 V 0.1 V 30.0 to 420.0 V ±1.5% rdg. ±5 dgt. ±2.5% rdg. ±5 dgt.
600 V 380 to 600 V 1 V
380 to 480 V ±2.0% rdg. ±5 dgt.
481 to 600 V ±5.0% rdg. ±5 dgt.
Measurement parameter
AC voltage (AC potential bridge)
Measurement objects Insulated electric lines (Indoor PVC or equivalent, 100 mm² or thicker), metal conductors
Note: Not suitable for shielded cables
Measurement values
True RMS display
Max. rated voltage to earth
600 Vrms AC
Circuit dynamics Crest factor 1.8 (sine wave only at 600 V range)
Temp. characteristics 0.05% rdg./°C
Effect of nearby conductors
±5% rdg. or less
Effect of external magnetic eld
none
Display 4200 counts, with less than 10 counts zero-suppressed
Display refresh rate Approx. once every 0.6 seconds
Display response time 2.4 s or less
Functions Data Hold, Auto Power Shutoff, Low-Battery Warning
Operating temp. & humidity
0 to 40°C, 80% rh or less, non-condensating
Storage temp. & humidity
-10 to 50°C, 80% rh or less, non-condensating
Operating environment Indoors, up to 2000 m ASL
Applicable standards Safety: EN61010, EMC: EN61326
Power supply Six AA (LR6) alkaline batteries, Max. operating time: approx. 14 h (power on, no input), or the equivalent of 1000
one-minute operations or 200 ve-minute operations
Max. rated power 2 VA
Dimensions and mass
51W(2.01") × 275H(10.83") × 37.5D(1.48") mm (per probe), Cable length: 900 mm (35.43"), 670 g (23.6 oz.) (including batteries)
n Model 3258 Specications (accuracy guaranteed for one year at 23 ±5°C and 80% rh or less)
oHiTESTER 3258 measurement principle
Measurements with traditional non-metallic-contact voltmeters and phase detectors
depend on the coupling capacitance (C1 and C2) between voltage detector electrodes in
the probe tips and the measurement objects. That voltage detection method can present
problems due to the dependence of the coupling capacitance on the material properties
of the measurement objects, making accurate voltage determination (Vm = Vm2 - Vm1)
problematic.
The SAFETY HiTESTER 3258 employs a new technological principle to detect accu-
rate measurement voltage (Vm) independent of coupling capacitance.
For insulated IV/CV cables or equivalent between 38mm² and 100mm², add 0.5% rdg. to standard accuracy.
Supplied Accessory: soft case
Model : SAFETY HiTESTER 3258
Model No. (Order Code)
3258
Accessories: Instruction manual ×1, LR6 (AA) alkaline battery ×6, Soft carrying case ×1