Description
The Hioki IR4053-10 and IR4056-20 are highly specialized digital insulation resistance testers engineered for precision diagnostics in demanding electrical environments. The IR4053-10 is specifically optimized for photovoltaic (PV) generation systems, featuring a dedicated PV measurement function that accurately assesses insulation resistance even when solar panels are actively generating power. Conversely, the IR4056-20 serves as a versatile 5-range megohmmeter designed for general industrial plant maintenance, motor diagnostics, and cable integrity verification. Both units feature high-speed comparator operations, delivering PASS/FAIL decisions in under 0.8 seconds, significantly reducing diagnostic lead time during extensive facility audits.
Technical Specifications:
Brand: Hioki
Model Numbers: IR4053-10 (PV Specialist) & IR4056-20 (General Industrial)
Standard Test Voltages: 50V, 125V, 250V, 500V, 1000V DC
PV Dedicated Test Voltages (IR4053-10): 500V, 1000V DC
Maximum Resistance Measurement: 4000 M-Ohm
DC Voltage Measurement (IR4053-10): Up to 1000V
AC/DC Voltage Measurement (IR4056-20): Up to 600V
Low Resistance/Continuity (IR4056-20): 200 mA testing current
Response Time: < 0.8 seconds (Comparator function)
Safety Category (IR4053-10): CAT III 1000V, CAT IV 600V
Safety Category (IR4056-20): CAT III 600V
Drop Resistance: 1 meter onto concrete
Operating Temperature Range: -25°C to 65°C
Dimensions: 159 mm W x 177 mm H x 53 mm D
Weight: 600 g
Application & Technical Compatibility:
The IR4053-10 resolves a critical challenge in renewable energy maintenance: measuring the insulation resistance of live solar arrays without the risk of equipment damage or inaccurate readings caused by generated voltage. Its Original Engineering allows technicians to safely bypass the influence of active PV strings. The IR4056-20 provides seamless Technical Compatibility with standard industrial electrical grids, allowing rapid continuity checks on ground wiring and high-voltage insulation tests on three-phase motors. Both instruments feature robust drop-proof enclosures and high-visibility digital displays, ensuring reliable data acquisition in harsh, low-light industrial environments.
Key Attributes
Accuracy Class: ±4% of reading
Insulation Resistance: 100 to 4,000 MΩ
Measuring Range: 100 to 4,000 MΩ
Testing Voltage: 50 to 1,000 V
Place of Origin: Japan
Model Number: IR4053-10
Brand Name: Hioki
Current Resolution: 1 mA
Dimensions: 18 * 16 * 6cm
Display Type: Digital Only
Operating Temperature: -10 to 50
Speed Range: 10 m/s
Time Resolution: 1 ms
Voltage range: 50 to 1,000 V
Insulation resistance measurement: 100 to 4,000 MΩ
Accuracy: ±4% of reading
Lower Limit Resistance: 0.05 to 1 MΩ in 5 ranges
Response Time: 4 seconds
Insulation measurement: 1 second
Power Supply: 4 AA batteries
Product Weight: 600g
Packaging and Delivery
Selling Units: Single item
Single package size: 28X15X13 cm
Single gross weight: 1.000 kg
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