HIOKI IR3455 High Voltage Insulation Tester

$3,630.00 Ex GST


Maximum 5kV Test Voltage – Up to 10 Teraohm of Insulated Resistance Testing

  • 3x Test Leads Included
  • 3x Alligator Clips Included
  • Optional Accessories upon request


Read full description and specs


Hioki insulation resistance testers or megohmmeters feature all-in-one designs including built-in rugged cases and test lead storage compartments.

The IR3455 is a 5-range, 250 V to 5000 V digital insulation resistance tester offering up to 10 TΩ of insulated resistance testing.

High performance features include bar graph, built-in memory, leak current and voltage testing, and DAR and PI calculation capabilities to help shorten work time associated with field insulation testing.



Wide Range of Voltage Generated for Measurement and Testing

Insulation resistance measurements:

Select a test voltage from 250 V, 500 V, 1.00 kV, 2.50 kV, and 5.00 kV.

More finely graded settings are also possible.

When measurement is completed, the unit shows the insulation resistance value, test voltage (setting and actual output), leakage current, DAR, PI, and elapsed time. Save measurement conditions and measurement results to internal memory, and view them on a computer.



Wide Range of Voltage Generated for Measurement and Testing

Step voltage test:
In this type of test, the voltage is gradually raised and the insulation resistance and leakage current change is measured.

Two different step settings are available: 500 V -> 1 kV -> 1.5 kV -> 2 kV -> 2.5 kV and 1 kV -> 2 kV -> 3 kV -> 4 kV -> 5 kV.

Basic Specifications

Accuracy guaranteed: 1 year, Accuracy guarantee period after adjustment made by Hioki: 1 year
Test voltage 250 V to 5.00 kV DC, (Possible in 25 V steps between 250 V and 1 kV and in 100 V steps between 1 and 5 kV)
Measurement range 0.00 MΩ to 500 GΩ (250 V)
0.00 MΩ to 1.00 TΩ (500 V)
0.00 MΩ to 2.00 TΩ (1 kV)
0.00 MΩ to 5.00 TΩ (2.5 kV)
0.00 MΩ to 10.0 TΩ (5 kV)
Measurement current 1 mA (Test voltage 250 V to 1.00 kV), 0.5 mA (Test voltage 1.10 kV to 2.50 kV) 0.25 mA (Test voltage 2.60 kV to 5.00 kV), Short-circuit current: 2 mA or less
Resistance range 10 MΩ to 10 TΩ, 7 ranges (auto range)
Accuracy ±5% rdg. ±5 dgt. Up to [Test voltage (setting value)/Resistance measurable at 100 nA]
±20% rdg. ±5 dgt. [Test voltage (setting value)/Resistance measurable at 100 nA] to [Test voltage (setting value)/Resistance measurable at 1 nA] or 500 GΩ
±30% rdg. ±50 dgt. [Test voltage (setting value)/Resistance measurable at 1 nA] or 501 GΩ to 9.99 TΩ
Leakage current measurement 1.00 nA to 1.20 mA, 6 ranges (current measurement that occurs when test voltage is generated)
Accuracy ±2.5% rdg. ±5 dgt. (1 mA range); refer to complete catalog for other ranges
Voltage measurement ±50 V to ±1.00 kV DC, 50 V to 750 V AC (50/60 Hz),
Accuracy: ±5 % rdg. ±5 dgt. , Input resistance: Approx. 10 MΩ
Temperature measurement -10.0 ˚C to 70.0 ˚C, 3 ranges (used with optional sensor)
Accuracy ±1.0 ˚C (0.0 ˚C to 40.0 ˚C); refer to complete catalog for other ranges
Other functions Insulation Diagnosis (Temperature compensation, PI/DAR display, Step voltage test), Data memory, Communication (USB 2.0, PC application software), auto discharge, hot conductor warning indication, etc.
Display Digital LCD, max. 999 dgt. with backlight, Bar graph display
Power supply LR6 (AA) alkaline batteries ×6, Battery pack 9459, or AC adapter 9753 or 9418-15 (100 – 240 VAC)
Continuous use : [LR6] 5 hr, [9459] 9 hr, (Occur 5 kV, +/- open terminal)
Dimensions and mass 260 mm (10.24 in)W × 250.6 mm (9.87 in)H × 119.5 mm (4.70 in)D, 2.8 kg (98.8 oz)
Accessories Test lead 9750-01 ×1, Test lead 9750-02 ×1, Test lead 9750-03 ×1, Alligator clip 9751-01 ×1, Alligator clip 9751-02 ×1, Alligator clip 9751-03 ×1, Instruction manual ×1, LR6 (AA) alkaline batteries ×6, USB cable ×1, PC application software (CD-R) ×1


Additional information

Weight 3.5 kg
Dimensions 40 × 40 × 20 cm

Pickup at a NWI Office Location

If you do not want to pay for delivery or need to receive the item ASAP, you can pick the item up at one of our five (5) Australian offices. Just bear in mind not all offices will have everything in stock. Please call our 1300 669 162 number to see if your item is in stock at your local office.  

Interstate Deliveries:

Delivery costs are based off your location in Australia. NWI Group uses TNT Australia for all domestic deliveries.  

Estimated Delivery Timeframe:

If you opted to collect at a NWI office location, you will receive an email to inform you when your goods are ready for collection. If you opted for delivery, you would receive an email when the goods have been despatched to the couriers with details so you can track your order. We aim to despatch all orders within 1-2 business days. In the unusual event of a delay to the despatch of your order you will be contacted at the earliest opportunity. Once the order has been despatched the estimated delivery time is as follows:
  • Metro (Exclude: Hobart Metro) 1 -2 business day:
  • Hobart Metro 3-4 business days
  • Regional Areas: 3-4 business days:
  • Remote Areas: 6-9 business days
Please note that these delivery timeframes are estimates and are not guaranteed.  

Returns Policy

Changed your mind? No worries. You just need to get the product back to the NWI office it was shipped from (this is on your receipt) within 30 days, unused and in its original packaging and we will give you a refund (excluding delivery costs – terms and conditions apply) Special order items are excluded from this returns policy.

General Data Sheets

View Datasheet

Insulation Testers Series Brochure


Why Choose NWI?

Since its inception in 1994, NWI Group has been committed to providing a service of quality in the sale, calibration and service of measuring equipment used in laboratories and manufacturing companies. Our strive for continuous improvement is part of our quality policy statement. A family-owned business, we have offices throughout Australia. Our product range covers fine precision measuring equipment to large industrial weighbridges, process instrumentation and automation software. Our calibration services for process and laboratories through our NATA accreditation guarantees our commitment to correct measurement and customer satisfaction.

Our Mission

It is our aim to provide our customers with levels of service that consistently exceed their expectations. This recognises that the customers ongoing, long-term relationship is crucial for business growth and development.

Our Vision

Provide individuals and companies with high quality and reliable measuring equipment, technology, and calibration services now and for future generations.


NATA Accreditation for:
  • Mass & Weighing
  • Volume & Density
  • Electrical Metrology
  • Time & Frequency Metrology
  • Temperature & Humidity Metrology
NMI Trade Measurement Servicing Licence for Weighing & Mass.



Unit 1, 88 Magowar Rd, Girraween, 2145


11/5 Agosta Drive, Laverton North, 3026


3A Wilford Ave, Underdale, 5032


2D/919 Nudgee Road Banyo QLD 4014


1/19 Industry St Malaga WA 6090

Call Us

Phone: 1300 669 162