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IRT.10A Portable 10kV Insulation Resistance Tester

The IRT.10A is a robust, digital, high-voltage insulation resistance tester engineered for accurate field and laboratory measurements of insulation resistance up to 20 TΩ. Supporting six selectable voltage ranges from 250 V to 10,000 V, it offers flexibility for testing a wide range of electrical assets, including transformers, high-voltage cables, switchgear, and rotating machines.

Its large digital LCD display, advanced filtering, and automatic DAR/PI analysis make it an ideal tool for professional maintenance, commissioning, and diagnostic work. The rugged, IP65-rated housing (when closed) ensures safe operation under adverse conditions.

Key Features

  • 6 test voltages: 250 V, 500 V, 1,000 V, 2,500 V, 5,000 V, 10,000 V

  • Measures insulation resistance up to 20 TΩ

  • Digital LCD with real-time voltage/current curves

  • Automatic DAR/PI calculation

  • Ramp voltage testing (increments of 10%)

  • Filtered resistance testing with selectable durations

  • Measures capacitance and leakage current

  • USB data export and internal memory storage (up to 1000 results)

  • Digital filtering to reduce noise and external influence

  • Automatic discharge function after testing

  • Dual power source: battery or AC

Technical Specifications

Parameter Value
Test Voltage Ranges 250 V, 500 V, 1,000 V, 2,500 V, 5,000 V, 10,000 V
Insulation Resistance Range Up to 20 TΩ
Test Voltage Accuracy 100% – 110% of nominal value
Voltage Measurement Accuracy ±5% + 3 V
Short-Circuit Current 7 mA
Current Measurement Precision ±5% + 0.2 nA
Capacitance Range 0 – 99.99 μF
Capacitance Accuracy ±10% + 10 nF
Filtered Resistance Test Durations 10 s, 20 s, 30 s, 40 s
Timing Test Range 1 – 99,999 seconds

Power & Battery

Specification Details
AC Input 220 V ±10%, 50/60 Hz, 20 VA
Battery 16.8 V Lithium-ion rechargeable battery
Battery Life Up to 6 hours @ 10 kV / 100 MΩ load

Environmental & Safety Ratings

Standard Compliance
Safety Standard IEC 61010-1 CAT IV 600 V
EMC IEC 61326-1
Electrostatic Immunity IEC 61000-4-2
Electromagnetic Immunity IEC 61000-4-3
Ingress Protection (closed) IP65

Physical Characteristics

Parameter Value
Dimensions 32 cm × 28 cm × 13 cm
Weight 3.8 kg (Approx. 8.4 lb)

Application

  • High-voltage insulation resistance testing

  • Condition monitoring for transformers, cables, and switchgear

  • Motor/generator insulation testing

  • Electrical maintenance and troubleshooting

Included Accessories

  • 2 High-voltage test leads

  • 1 GUARD terminal lead

  • AC power adapter

  • USB data cable

  • Durable carrying case

  • Instruction manual

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