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High-precision digital insulation resistance tester showing 2000 count display and 20GΩ range.
Summary of XT501A features including 100 data sets storage, DAR, PI, and backlit screen.
XT501A insulation resistance tester with a PI judgement standard table for deep diagnostics.
Digital insulation tester showing DAR (Dielectric Absorption Ratio) measurement chart and judgement standards.
User activating the bright LCD backlight on the XT501A tester for dark environments.
Xin Tester XT501A measuring AC voltage from a wall outlet and DC voltage from a car battery.
Complete unboxing kit of Xin Tester XT501A including tester, storage bag, alligator clips, and manual.

Features & Details

⚡ 1000V MEGOHMMETER Multi-gear test voltages (50V, 100V, 250V, 500V, 1000V) with auto-ranging resistance measurement up to 20GΩ for industrial motors and cables.
📊 DAR & PI TESTING Automated calculation of Dielectric Absorption Ratio (DAR) and Polarization Index (PI) to evaluate moisture ingress and aging insulation.
🛡️ CAT III 600V RATED Equipped with high-voltage live-circuit warning, auto residual discharge, and 100-group onboard measurement data logging.
📈 BACKLIT DUAL DISPLAY 2000-count dual LCD display shows insulation resistance, test output voltage, and countdown timer simultaneously in dark switchgear rooms.

About this item

Specification Feature XT501A XT502A
Brand Xin Tester®
Output Voltage 50V – 1000V 250V – 2500V
Resistance Range 0.1MΩ – 20GΩ 1MΩ – 200GΩ
AC/DC Voltage Measurement 10V – 600V 10V – 600V
Data Storage 100 Groups 100 Groups
Backlight Display Yes Yes
Absorption Ratio (DAR) Yes Yes
Polarization Index (PI) Yes Yes
Auto Range Yes Yes
Low Battery Indication Yes Yes
The XT501A / XT502A Series offers professional-grade insulation resistance testing. Both models feature automatic DAR/PI calculations, high-capacity data storage, and rigorous safety protections, making them the ultimate megohmmeter choice for diagnosing large-scale industrial electrical systems.

Industrial Electrical Insulation Testing

Xin Tester XT501A/XT502A 1000V Megohmmeter

Degraded insulation causes severe short-circuits, unplanned plant shutdowns, and safety hazards. The Xin Tester XT501A / XT502A digital insulation resistance tester delivers verified diagnostic accuracy across heavy motors, power transformers, switchboards, and distribution cables. With adjustable test voltages from 50V up to 1000V and measurements reaching 20GΩ, it serves as an indispensable field diagnostic instrument. Discover our complete line of diagnostic instruments in the Resistance Meter catalog.

Xin Tester XT501A Insulation Resistance Tester

XT501A (Essential Maintenance)

  • Test Voltages: 100V, 250V, 500V, 1000V output gears
  • Resistance Range: 0.1MΩ to 10GΩ with auto-ranging
  • Voltage Measurement: AC/DC voltage test (10V – 600V)
  • Applications: Substation cables, generators, building wiring checks

XT502A (Advanced Diagnostics)

  • Extended Voltages: 50V, 100V, 250V, 500V, 1000V for telecom & low-voltage circuits
  • Expanded Range: Up to 20GΩ high-voltage insulation evaluation
  • Diagnostic Calculations: Automated DAR and PI ratio determination
  • Data Logging: 100 sets of internal record storage with recall function

DAR absorption ratio standard table

⚡

Diagnostic Insight: Why DAR and PI Matter

Spot insulation checks at a single minute can be misleading because leakage current changes over time. Dielectric Absorption Ratio (DAR = R60s / R15s) and Polarization Index (PI = R10min / R1min) measure how insulation behaves under prolonged DC electrical stress. A PI ratio below 1.5 or DAR below 1.0 indicates severe moisture accumulation or surface contamination, alerting plant engineers before dielectric breakdown occurs.

XT501A dimensions and button controls

Safety-Verified High Voltage Testing

Each unit includes silicon-insulated test leads, heavy-duty alligator clips, test probes, and an impact-resistant protective holster. An automated discharge circuit releases capacitive voltage safely after each test cycle.

Explore related testing categories:
Digital Multimeter |
Electrical Measuring Instruments

Complete accessory kit for XT501A

Related products:
UT502C 2500 V insulation tester

Use Cases

Heavy Duty DesignHigh Voltage TestingIndustrial MaintenanceSafety & Protection

FAQs

Xin Tester XT501A/XT502A 1000V Insulation Resistance Tester

Price range: $68.99 through $79.99

Extra 5% Off with code: welcome5

6–12 Month Warranty

Repair & Refund support available for most products.

Free Worldwide Shipping

Ships within 3 business days.

Taxes & Duties

Buyer responsible for local import fees.

24/7 After-Sales Support

Technical assistance & video guidance within 24h.

Xin Tester XT501A/XT502A 1000V Insulation Resistance Tester

Sale!
High-precision digital insulation resistance tester showing 2000 count display and 20GΩ range.
Summary of XT501A features including 100 data sets storage, DAR, PI, and backlit screen.
XT501A insulation resistance tester with a PI judgement standard table for deep diagnostics.
Digital insulation tester showing DAR (Dielectric Absorption Ratio) measurement chart and judgement standards.
User activating the bright LCD backlight on the XT501A tester for dark environments.
Xin Tester XT501A measuring AC voltage from a wall outlet and DC voltage from a car battery.
Complete unboxing kit of Xin Tester XT501A including tester, storage bag, alligator clips, and manual.

Price range: $68.99 through $79.99

Features & Details

⚡ 1000V MEGOHMMETER Multi-gear test voltages (50V, 100V, 250V, 500V, 1000V) with auto-ranging resistance measurement up to 20GΩ for industrial motors and cables.
📊 DAR & PI TESTING Automated calculation of Dielectric Absorption Ratio (DAR) and Polarization Index (PI) to evaluate moisture ingress and aging insulation.
🛡️ CAT III 600V RATED Equipped with high-voltage live-circuit warning, auto residual discharge, and 100-group onboard measurement data logging.
📈 BACKLIT DUAL DISPLAY 2000-count dual LCD display shows insulation resistance, test output voltage, and countdown timer simultaneously in dark switchgear rooms.
Specification Feature XT501A XT502A
Brand Xin Tester®
Output Voltage 50V – 1000V 250V – 2500V
Resistance Range 0.1MΩ – 20GΩ 1MΩ – 200GΩ
AC/DC Voltage Measurement 10V – 600V 10V – 600V
Data Storage 100 Groups 100 Groups
Backlight Display Yes Yes
Absorption Ratio (DAR) Yes Yes
Polarization Index (PI) Yes Yes
Auto Range Yes Yes
Low Battery Indication Yes Yes
The XT501A / XT502A Series offers professional-grade insulation resistance testing. Both models feature automatic DAR/PI calculations, high-capacity data storage, and rigorous safety protections, making them the ultimate megohmmeter choice for diagnosing large-scale industrial electrical systems.

Industrial Electrical Insulation Testing

Xin Tester XT501A/XT502A 1000V Megohmmeter

Degraded insulation causes severe short-circuits, unplanned plant shutdowns, and safety hazards. The Xin Tester XT501A / XT502A digital insulation resistance tester delivers verified diagnostic accuracy across heavy motors, power transformers, switchboards, and distribution cables. With adjustable test voltages from 50V up to 1000V and measurements reaching 20GΩ, it serves as an indispensable field diagnostic instrument. Discover our complete line of diagnostic instruments in the Resistance Meter catalog.

Xin Tester XT501A Insulation Resistance Tester

XT501A (Essential Maintenance)

  • Test Voltages: 100V, 250V, 500V, 1000V output gears
  • Resistance Range: 0.1MΩ to 10GΩ with auto-ranging
  • Voltage Measurement: AC/DC voltage test (10V – 600V)
  • Applications: Substation cables, generators, building wiring checks

XT502A (Advanced Diagnostics)

  • Extended Voltages: 50V, 100V, 250V, 500V, 1000V for telecom & low-voltage circuits
  • Expanded Range: Up to 20GΩ high-voltage insulation evaluation
  • Diagnostic Calculations: Automated DAR and PI ratio determination
  • Data Logging: 100 sets of internal record storage with recall function

DAR absorption ratio standard table

⚡

Diagnostic Insight: Why DAR and PI Matter

Spot insulation checks at a single minute can be misleading because leakage current changes over time. Dielectric Absorption Ratio (DAR = R60s / R15s) and Polarization Index (PI = R10min / R1min) measure how insulation behaves under prolonged DC electrical stress. A PI ratio below 1.5 or DAR below 1.0 indicates severe moisture accumulation or surface contamination, alerting plant engineers before dielectric breakdown occurs.

XT501A dimensions and button controls

Safety-Verified High Voltage Testing

Each unit includes silicon-insulated test leads, heavy-duty alligator clips, test probes, and an impact-resistant protective holster. An automated discharge circuit releases capacitive voltage safely after each test cycle.

Explore related testing categories:
Digital Multimeter |
Electrical Measuring Instruments

Complete accessory kit for XT501A

Related products:
UT502C 2500 V insulation tester

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