HIOKI IR4057-90 Digital Insulation Tester with Bar Graph and Bluetooth, 50 V to 1000 V

Digital insulation tester with bar graph display and integrated Bluetooth, 5 test voltages from 50 V to 1000 V, insulation resistance up to 4000 MΩ, PASS/FAIL comparator, 200 mA protective conductor test, operating temperature from -25 °C to 65 °C

HIOKI IR4057-90 digital insulation tester 50v to 1000v bar graph with bluetooth

HIOKI IR4057-90 digital insulation tester 50v to 1000v application

HIOKI IR4057-90 digital insulation tester 50v to 1000v bar graph 5 range measurement

€548.00*

Content: 1 Each

*Prices excl. VAT plus shipping costs

In stock in Germany

€548.00*

HIOKI IR4057-90 Digital Insulation Tester with Bar Graph and Bluetooth, 50 V to 1000 V

Available stock: 1

Product number: IR4057-90

EAN: 4536036013746

Length: 159 mm

Width: 53 mm

Height: 177 mm

Weight: 0.64 kg

Product information HIOKI IR4057-90 Digital Insulation Tester with Bar Graph and Bluetooth, 50 V to 1000 V

Key Specifications

5 test voltages from 50 V to 1000 V
Insulation resistance up to 4000 MΩ
Safety category CAT III 600 V
Digital bar graph display
Integrated Bluetooth communication

Typical Applications

Inspection and maintenance of low-voltage electrical installations
Troubleshooting insulation faults in wiring, motors, and equipment
Field testing of machinery, control panels, and distribution boards
Periodic inspection of plant and equipment

Feature	IR4053	IR4056	IR4057-50	IR4057-90	IR4059
PVΩ Function	Yes	–
Bar Graph Display	–		Yes
Bluetooth	–		Optional (Z3210)	Yes (Z3210 included)	Optional (Z3210)
Housing	Integrated hard case				Compact housing with silicone protector
L9788-10 Test Lead with Remote Switch	Optional				Yes

Detailed Product Overview

In installation and maintenance work, insulation resistance measurements are routinely carried out when checking wiring, distribution boards, motors and electrical equipment after repairs or during periodic inspections. For these tasks, a dedicated insulation tester is often the appropriate choice instead of a multifunction installation tester or combined test instrument.

The IR4057-90 consists of the IR4057-50 insulation tester and the Z3210 Bluetooth adapter. The included tester is a digital, battery-powered insulation tester that provides five selectable test voltages from 50 V to 1000 V and measures insulation resistance up to 4000 MΩ. It complies with EN 61557 requirements for insulation resistance and protective conductor continuity testing in low-voltage installations.

Digital Bar Graph and Fast PASS/FAIL Evaluation

Alongside the numeric measurement display, the IR4057-90 includes a digital bar graph for continuous visual indication of insulation resistance during testing. Resistance changes can be observed directly on the scale. The comparator function evaluates insulation measurements within approximately 0.3 seconds and indicates PASS or FAIL acoustically and visually. In the event of a FAIL result, the display backlight turns red.

PASS/FAIL thresholds can be defined individually for each test voltage. Settings remain stored even after switching the instrument off or selecting another range. With the comparator function switched off, the instrument instead displays the insulation resistance value after 60 seconds during an ongoing measurement. This supports time-based evaluation when longer test durations are required.

Protective Conductor Testing and Voltage Measurement

Protective conductor testing is performed with a 200 mA test current in accordance with EN 61557-4. The defined test current applies sufficient load to the protective conductor connection to identify increased contact resistance, loose terminals and oxidized connections. This provides a more reliable assessment than a low-current continuity check performed with a standard digital multimeter.

The instrument also includes AC and DC voltage measurement up to 600 V, allowing verification that the test object is not live before insulation testing. For added safety, the 500 V and 1000 V test voltages must be manually unlocked before the first measurement. This prevents accidental activation of higher test voltage levels.

For Daily Field Work

The IR4057-90 complies with CAT III 600 V and has been tested for a 1 m drop onto concrete. It is specified for operation in ambient temperatures from -25 °C to 65 °C. The instrument is integrated into a protective hard case that forms a single unit and provides storage space for test leads and accessories. Test leads remain connected during transport.

The high-contrast display with backlight supports work in distribution boards and poorly lit technical rooms. An optional L9788-10 test lead with integrated LED illumination and measurement trigger allows measurements to be started directly from the probe.

With the included Z3210 Bluetooth adapter, measurement data can be transferred directly to the free GENNECT Cross app on iOS or Android devices. Results can be stored wirelessly and exported as structured reports, reducing manual documentation effort during installation and maintenance.

Like all HIOKI insulation testers, the IR4057-90 is designed and manufactured in Japan at HIOKI’s own production facilities in Nagano Prefecture.

IR4057-50 Digital Insulation Tester
Z3210 Bluetooth Adapter
L9787 Test Lead Set
Neck strap
Instruction manual
LR6 (AA) alkaline batteries ×4

Related Products

L9788-10

L9788-10 - Test lead with release button red

Red test lead with integrated remote switch and LED illumination, 1.2 m, for HIOKI insulation testers IR4053, IR4056, IR4057-50, IR4057-90 and IR4059

€68.00*

View product

L9788-92

L9788-92 - Slip-on tip for L9788-10

The L9788-92 is a detachable accessory tip for the L9788-10 test lead for checking breaker terminals.Technical information:Tip length: 121 mm Tip diameter: 2.6 mm Voltage safety categoriy: Cat III 600V Imax: 2 A Color: Red Compatible to: L9788-10, L9788-11

€28.00*

View product

IR4059

HIOKI IR4059 - Digital Insulation Tester with Bar Graph and Remote Switch, 50 V to 1000 V

Digital insulation tester with bar graph display, 5 test voltages from 50 V to 1000 V, insulation resistance up to 4000 MΩ, PASS/FAIL comparator, 200 mA protective conductor test, integrated remote switch in test lead, Bluetooth optional with Z3210

€498.00*

View product

IR4057-50

IR4057-50 - Digital Insulation Tester with Bar Graph, 50 V to 1000 V

Digital insulation tester with bar graph display, 5 test voltages from 50 V to 1000 V, insulation resistance up to 4000 MΩ, PASS/FAIL comparator, 200 mA protective conductor test, operating temperature from -25 °C to 65 °C, Bluetooth optional with Z3210

€488.00*

View product

IR4056 - Digital Portable Insulation Tester, 50 V to 1000 V, up to 4000 MΩ

IR4056-20

IR4056 - Digital Portable Insulation Tester, 50 V to 1000 V, up to 4000 MΩ

Digital insulation tester, 5 test voltages from 50 V to 1000 V, insulation resistance measurement up to 4000 MΩ, PASS/FAIL judgment, 200 mA protective conductor (PE) testing, AC/DC voltage verification up to 600 V, battery-powered

€248.00*

View product

IR4053 - Digital Insulation Tester with PVΩ Function, 50 V to 1000 V

IR4053-10

IR4053 - Digital Insulation Tester with PVΩ Function, 50 V to 1000 V

Digital insulation tester with PVΩ function for measurements on live PV strings, 5 test voltages from 50 V to 1000 V, insulation resistance measurement up to 4000 MΩ, AC/DC voltage measurement up to 600 V, battery-powered

€488.00*

View product

IR5051-90

IR5051-90 - Portable high voltage PV insulation tester with Z3210

Portable high voltage insulation tester with dedicated PV function and Bluetooth, insulation testing up to 5 kV and 10 TΩ, PV testing up to 2000 V even during power generation, IP65 rated, CAT III 2000 V

€2,228.00*

View product

IR5051

HIOKI IR5051 - Portable high voltage insulation tester with PV function

Portable high voltage insulation tester with dedicated PV function, insulation testing up to 5 kV and 10 TΩ, PV testing up to 2000 V even during power generation, IP65 rated, CAT III 2000 V, optional Bluetooth communication

€2,168.00*

View product

IR5050

IR5050 - Portable 5 kV high voltage insulation tester

Portable high voltage insulation tester, five test voltage ranges from 250 V to 5 kV, seven insulation resistance ranges from 10 MΩ to 10 TΩ, CAT III 2000 V, CAT IV 1000 V, IP65, optional Bluetooth communication

€2,058.00*

View product

3490

3490 - Analog Insulation Tester, 250 V to 1000 V, up to 4000 MOhm

Analog insulation tester with needle display, 3 test voltages 250 V, 500 V and 1000 V, insulation resistance measurement up to 4000 MΩ, 200 mA protective conductor (PE) testing, AC voltage measurement up to 600 V, battery-powered

€308.00*

View product

9804-02

9804-02 - Magnetic Clip for Test Leads, black, 4 mm Anschluss

Black magnetic clip for test leads with 4 mm connectors, 11 mm concave contact surface for raised ferromagnetic contact points, CAT IV 1000 V, 2 A

€58.00*

View product

L9787-91

L9787-91 - Push-on tip for L9787

The L9787-91 is a test tip for checking breaker terminals. It is detacable for use with compatible test leads. Technical information:Length with handle: 128mm Tip diameter: 2.6 mm Tip surface: gildedVoltage safety category: CAT III 600V Max current: 10A Compatible to: L2200, L4930, L4931, L4943, L9257, L9787Colour: red

€28.00*

View product