Description
The Hioki IR4057-50 is a high-performance digital insulation resistance tester engineered for rigorous industrial electrical maintenance and field diagnostics. Built with Hioki’s Original Engineering standards, this megohmmeter delivers rapid, high-precision insulation diagnostics across a wide spectrum of low-to-medium voltage applications. The instrument features a high-speed comparator that provides PASS/FAIL decisions in 0.3 seconds, significantly reducing testing Lead Time during large-scale facility inspections.
Technical Specifications:
Brand: Hioki
Model: IR4057-50
Product Type: Digital Insulation Resistance Tester
Test Voltages: 50V / 125V / 250V / 500V / 1000V DC
Maximum Resistance Range: 100 MΩ (50V) to 4000 MΩ (1000V)
DC Voltage Measurement: 4.2V to 600V
AC Voltage Measurement: 420V to 600V
Continuity Testing: 10 Ω to 1000 Ω (200 mA testing current)
Response Time: Approx. 0.3 seconds (PASS/FAIL comparator)
Display: Semi-transparent FSTN LCD with backlight and bar graph
Wireless Connectivity: Compatible with Wireless Adapter Z3210 (Bluetooth)
Safety Standard: CAT III 600V
Drop Resistance: 1 meter onto concrete
Operating Temperature: -25°C to 65°C
Power Supply: LR6 (AA) alkaline batteries x 4
Dimensions: 159 mm W x 177 mm H x 53 mm D
Weight: 600 g (including batteries)
Industrial Application:
The IR4057-50 is specifically designed for preventative maintenance in harsh industrial environments, such as evaluating the insulation integrity of heavy-duty electric motor windings, solar photovoltaic (PV) installations, and electric vehicle (EV) charging infrastructure. Its broad Technical Compatibility allows technicians to verify insulation degradation before catastrophic failure occurs, ensuring uninterrupted production lines. The integration of the Z3210 adapter facilitates seamless data logging to mobile devices, streamlining compliance reporting for facility managers.
Key Attributes
Accuracy Class: 1%
Current Range: 0 A ~ 10 A
Insulation Resistance: 4 G Ohms
Measuring Range: 4 G Ohms
Testing Voltage: 1,000 V, 125V, 250 V, 50 V, 500 V
Place of Origin: Japan
Model Number: IR4057-50
Brand Name: Hioki
Current Resolution: 1 mA
Dimensions: 35*28*16cm
Display Type: Digital Only
Operating Temperature: -10 to 50°C
Speed Range: 10 m/s
Time Resolution: 1 ms
IR Test Voltage: 1,000 V, 125V, 250 V, 50 V, 500 V
Maximum Insulation Resistance: 4 G Ohms
Power Supply: Battery
Minimum Insulation Resistance: 0.01 Ohms
Variable Incremental Voltage: NO
Display (Megohmmeter): Digital
Continuity Test: Yes
Live Circuit Voltage Detection: Yes
Packaging and Delivery
Selling Units: Single item
Single package size: 29X17X14 cm
Single gross weight: 2.000 kg
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