IRT.15B Portable 15kV Insulation Resistance Tester

• Test voltages: 250 V to 15,000 V (7 levels)

• Measure insulation resistance up to 30 TΩ

• Real-time display of voltage and current curves

• Automatic PI (Polarization Index) and DAR (Dielectric Absorption Ratio)

• Ramp voltage test: Step increase in 10% increments

• Filtered resistance test mode: 10s, 20s, 30s, 40s

• Capacitance & leakage current measurement

• USB port for data logging and export (up to 1000 test records)

• Digital filtering for noise immunity

• Automatic discharge after testing

• Timing test function: 1 to 99,999 seconds

• Dual power modes: AC or rechargeable lithium battery

• Short circuit current: Up to 7 mA

Test Voltage Levels

• 250 V, 500 V, 1,000 V, 2,500 V, 5,000 V, 10,000 V, 15,000 V

Insulation Resistance Range

• Up to 30 TΩ

Voltage Accuracy

• 100% – 110% of nominal value

Voltage Measurement Accuracy

• ±5% + 3 V

Short Circuit Current

• 7 mA

Ramp Test

• Increments: 10% steps from 10% to 100% of preset voltage

Current Measurement

• Precision: ±5% + 0.2 nA

Capacitance Measurement

• Range: 0 – 99.99 μF

• Accuracy: ±10% + 10 nF

Filtered Resistance Test Modes

• Duration options: 10 s, 20 s, 30 s, 40 s

Timing Test

• Range: 1 – 99,999 seconds

Power Supply

• AC Input: 220 V ±10%, 50/60 Hz, 20 VA

• Battery: 16.8 V rechargeable Lithium-ion battery

• Battery Life:

  • Up to 6 hours at 15 kV / 100 MΩ load

  • Typical field use: ~4 hours continuous testing

Safety & Environmental Ratings

Physical Characteristics

• Medium and high-voltage cable diagnostics

• Switchgear & transformer insulation testing

• Preventive maintenance in power utilities

• High-voltage motors and generators

• Field & lab insulation testing environments

• 2 High-voltage measuring leads

• 1 GUARD test lead

• USB cable for data export

• Power adapter

• Carrying case

• Operating instructions manual