Description

Introduction Hioki IR4057-50 Insulation Tester

The Hioki IR4057-50 Insulation Tester combines speed, accuracy, and rugged field durability in a single handheld unit. Electricians rely on this instrument to confirm insulation integrity in motors, panels, cables, and control systems before energizing any circuit. A built-in comparator delivers a PASS or FAIL judgment in roughly 0.3 seconds, and the digital bargraph tracks resistance changes visually as the test runs. Astzbd stocks the Hioki IR4057-50 Insulation Tester for professionals who cannot afford downtime or inaccurate readings on a job site.

 

SPECIFICATIONS digital insulation resistance tester

Parameter	Specification
Rated output voltage	50 V / 125 V / 250 V / 500 V / 1000 V DC (5 ranges)
Maximum indicated resistance	100 MΩ / 250 MΩ / 500 MΩ / 2000 MΩ / 4000 MΩ
Accuracy	±2% rdg. ±2 dgt. across the 1st effective measuring range on each voltage setting
Overload protection	600 V AC (10 s) on lower ranges; 660 V AC (10 s) on the 1000 V range
DC voltage range	4.2 V to 600 V, 4 ranges, accuracy ±1.3% rdg. ±4 dgt.
AC voltage range	420 V / 600 V, 2 ranges, 50/60 Hz, accuracy ±2.3% rdg. ±8 dgt.
Low resistance range	10 Ω to 1000 Ω, 3 ranges, ±3% rdg. ±2 dgt., 200 mA test current
Display	Semi-transmissive FSTN LCD with backlight and bar-graph indicator
Response time	Approx. 0.3 second for PASS/FAIL decision
Other functions	One-minute hold display, live-circuit indicator, automatic discharge, auto DC/AC detection, comparator, drop-proof design, auto power save
Power supply	4 × LR6 (AA) alkaline batteries; approx. 20 hours continuous use or 1000 measurements
Dimensions	159 mm (W) × 177 mm (H) × 53 mm (D)
Mass	640 g including batteries, excluding test leads
Safety rating	CAT III 600 V
Drop resistance	Survives a 1 m drop onto concrete
Included accessories	Connection cable L4930, alligator clip set L4935, test pin set L4938, neck strap, instruction manual, 4 × LR6 batteries
Warranty / accuracy guarantee	1 year

 

Key Features 1000V insulation tester Bangladesh

1. Five test voltage ranges: 50 V, 125 V, 250 V, 500 V, and 1000 V DC, covering insulation resistance up to 4000 MΩ
2. Comparator function issues a PASS/FAIL judgment in approximately 0.3 seconds
3. Digital bargraph display shows resistance trends instantly, which helps when testing capacitive loads like solar panels
4. Built-in AC/DC voltage meter confirms a circuit is de-energized before insulation testing begins
5. 200 mA low-resistance range checks ground wiring continuity
6. Rugged all-in-one case survives a 1-meter drop onto concrete
7. White LED-lit scale keeps readings visible in dim panel rooms and basements
8. Optional Z3210 wireless adapter sends readings straight to a smartphone or tablet through the GENNECT Cross app
9. 500 V and 1000 V ranges require manual unlocking, which guards against accidental high-voltage activation
10. Thumb-operated measurement switch supports single-shot or continuous testing modes

Applications Hioki megohmmeter

1. Insulation testing on distribution panels and switchboards
2. Motor and generator winding insulation checks
3. Cable and wiring insulation verification in industrial plants
4. Solar panel and PV system insulation testing, using the bargraph to monitor capacitive charging behavior
5. EV and HEV continuity checks per IEC 60364
6. Ground wiring continuity verification in commercial buildings
7. Routine preventive maintenance on control systems and machinery

Who Uses This insulation tester with bargraph

1. Licensed electricians performing pre-commissioning insulation checks
2. Industrial maintenance technicians conducting scheduled equipment inspections
3. Solar installation companies verifying PV array insulation before grid connection
4. Building and facilities management teams running periodic electrical safety audits
5. EV service centers checking battery and charging system continuity
6. Electrical contractors bidding on commercial wiring projects that require documented test reports

Why Buy from Astzbd Hioki IR4057-50 Insulation Tester

Astzbd sources the Hioki IR4057-50 Insulation Tester directly through authorized supply channels, so buyers in Bangladesh receive a genuine instrument backed by manufacturer specifications. The team tests every unit before dispatch and includes the full accessory set — connection cable, alligator clips, test pins, and a neck strap — in every box. Astzbd also provides after-sales support, calibration guidance, and prompt replacement parts sourcing for Hioki test leads and accessories, which keeps field teams working without long equipment downtime.

 

Frequently Asked Questions digital insulation resistance tester

Q: What voltage ranges does the Hioki IR4057-50 Insulation Tester support? A: The instrument tests at 50 V, 125 V, 250 V, 500 V, and 1000 V DC, and it measures insulation resistance up to 4000 MΩ.

Q: Does the 500 V and 1000 V range activate immediately? A: No. The unit requires a manual unlock step before using the 500 V or 1000 V range, which prevents accidental exposure to higher test voltages.

Q: How fast does the comparator give a PASS/FAIL result? A: The comparator issues a judgment in approximately 0.3 seconds based on in-house testing.

Q: Can this tester connect to a phone or tablet? A: Yes, with the optional Z3210 wireless adapter. Once connected, the tester transmits readings to the GENNECT Cross app on iOS or Android.

Q: Is the Hioki IR4057-50 suitable for solar panel testing? A: Yes. The digital bargraph shows charging behavior on capacitive loads, which makes it easier to judge insulation status on solar arrays.

Q: What batteries does it use? A: Four LR6 (AA) alkaline batteries power the unit for roughly 20 hours of continuous use or about 1000 measurements.

Q: Does astzbd include test leads and accessories with the tester? A: Yes. Every unit ships with a connection cable, alligator clip set, test pin set, neck strap, and the instruction manual.