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Features & Details

⚡ 2500V MEGOHMMETER Selectable test output voltages (500V, 1000V, 2500V) evaluating high-voltage cable insulation up to 20GΩ.
📊 DAR & PI CALCULATION Automates Dielectric Absorption Ratio and Polarization Index testing for transformer aging diagnostics.
🛡️ AUTO VOLTAGE DISCHARGE Discharges residual stored capacitive voltage automatically upon test completion to protect operators.
📟 BACKLIT DUAL DISPLAY Backlit LCD displays insulation resistance and actual terminal test voltage simultaneously.

About this item

Measurement Function
UT501C Details
UT502C Details

Output Voltages & Resistance Range
100V Output
0.0MΩ ~ 100.0MΩ
—
250V Output
0.0MΩ ~ 500.0MΩ
0.0MΩ ~ 500.0MΩ
500V Output
0.0MΩ ~ 2.0GΩ
0.0MΩ ~ 2.0GΩ
1000V Output
0.0MΩ ~ 5.0GΩ
0.0MΩ ~ 5.0GΩ
2500V Output
—
0.00MΩ ~ 20.0GΩ

General Specifications (Both Models)
Resistance Accuracy
0.0MΩ ~ 99.9MΩ: ±(3% + 5)
100MΩ ~ 20.00GΩ: ±(5% + 5)
AC Voltage Tester
30V ~ 750V AC (50Hz/60Hz)  |  Accuracy: ±(2% + 3)
Core Features
✓ Self-Locking Switch for continuous testing
✓ Sound & Light Alarm (<4MΩ warning)
✓ Auto Power Off & Low Battery Indication
Power Supply
6 x 1.5V AA Alkaline Batteries
(Optional power supply adapter available, no charging function)

✦ Included Accessories: User Manual, Test Leads (1 Pair), Alligator Clips (1 Set), Carrying Strap, 6x AA Batteries.
✦ Operating Environment: 0°C ~ 35°C (<75% RH) | Max Altitude: ≤2000m.

Professional Electrical Diagnostics & Circuit Verification

UT502C/UT501C Digital Insulation Tester, 2500V 20GΩ Megohmmeter & AC Voltage Tester Professional Series

Ensuring dependable accuracy during daily operations requires professional equipment engineered to withstand demanding laboratory and industrial environments. The UNI-T UT502C/UT501C Digital Insulation Tester, 2500V 20GΩ Megohmmeter & AC Voltage Tester provides verified stability, user-friendly operation, and certified safety compliance across standard maintenance protocols. Discover our complete line of diagnostic and testing instruments in the Resistance Meter catalog.

Comprehensive Testing Functions

Measures AC/DC voltage, current, resistance, capacitance, frequency, and rapid continuity with loud acoustic beeper feedback.

Smart User Features

Data hold freezes fluctuating values on screen, backed by automatic power-off and clear LED display backlighting in dark spaces.

💡

Testing Insight: CAT Rating Isolation in Electrical Multimeters

CAT III and CAT IV rated meters incorporate internal high-energy ceramic fuses and wide PCB creepage spacing to protect operators against explosive transient arc flashes.

Ordering & Model Verification

Verify voltage range, display counts, and included accessories before selecting your model in the right-side order box.

Related technical collections:
Digital Multimeter |
Digital Clamp Meter

Related products:
UT502A 2500 V insulation resistance tester |
UT501A 1000 V digital megohmmeter |
XT501A/XT502A insulation resistance tester |
UT595 multifunction installation tester |
UNI-T UT273 clamp-on ground resistance tester

Product guides and documents

UT502C User Manual (PDF)

FAQs

A: First, both models feature highly accurate AC voltage testing. However, the UT501C only provides up to 1000V output. Alternatively, the UT502C digital insulation tester delivers a massive 2500V output. Consequently, the UT502C tests heavy-duty industrial equipment much more effectively.

A: Pressing the test button constantly causes severe hand fatigue. Fortunately, this megohmmeter includes a self-locking feature. Specifically, you simply press the lock button once. Therefore, the device runs continuous insulation measurements automatically. Ultimately, it frees up your hands for safer operations.

A: Electrical safety relies entirely on healthy cable insulation. Specifically, if the tested resistance drops below 4MΩ, the device reacts instantly. Furthermore, the loud buzzer sounds and the red light flashes simultaneously. Thus, it warns technicians of dangerous electrical leakage immediately.

A: Yes, you certainly can. First, it operates flawlessly using six standard AA alkaline batteries. However, it also supports an optional power supply adapter. Consequently, you can plug it into a wall outlet for continuous benchtop testing. Just remember, it does not charge the batteries.

UNI-T UT502C/UT501C Digital Insulation Tester, 2500V 20GΩ Megohmmeter & AC Voltage Tester

Price range: $72.99 through $91.99

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.

UNI-T UT502C/UT501C Digital Insulation Tester, 2500V 20GΩ Megohmmeter & AC Voltage Tester

Sale!

Price range: $72.99 through $91.99

Features & Details

⚡ 2500V MEGOHMMETER Selectable test output voltages (500V, 1000V, 2500V) evaluating high-voltage cable insulation up to 20GΩ.
📊 DAR & PI CALCULATION Automates Dielectric Absorption Ratio and Polarization Index testing for transformer aging diagnostics.
🛡️ AUTO VOLTAGE DISCHARGE Discharges residual stored capacitive voltage automatically upon test completion to protect operators.
📟 BACKLIT DUAL DISPLAY Backlit LCD displays insulation resistance and actual terminal test voltage simultaneously.

Measurement Function
UT501C Details
UT502C Details

Output Voltages & Resistance Range
100V Output
0.0MΩ ~ 100.0MΩ
—
250V Output
0.0MΩ ~ 500.0MΩ
0.0MΩ ~ 500.0MΩ
500V Output
0.0MΩ ~ 2.0GΩ
0.0MΩ ~ 2.0GΩ
1000V Output
0.0MΩ ~ 5.0GΩ
0.0MΩ ~ 5.0GΩ
2500V Output
—
0.00MΩ ~ 20.0GΩ

General Specifications (Both Models)
Resistance Accuracy
0.0MΩ ~ 99.9MΩ: ±(3% + 5)
100MΩ ~ 20.00GΩ: ±(5% + 5)
AC Voltage Tester
30V ~ 750V AC (50Hz/60Hz)  |  Accuracy: ±(2% + 3)
Core Features
✓ Self-Locking Switch for continuous testing
✓ Sound & Light Alarm (<4MΩ warning)
✓ Auto Power Off & Low Battery Indication
Power Supply
6 x 1.5V AA Alkaline Batteries
(Optional power supply adapter available, no charging function)

✦ Included Accessories: User Manual, Test Leads (1 Pair), Alligator Clips (1 Set), Carrying Strap, 6x AA Batteries.
✦ Operating Environment: 0°C ~ 35°C (<75% RH) | Max Altitude: ≤2000m.

Professional Electrical Diagnostics & Circuit Verification

UT502C/UT501C Digital Insulation Tester, 2500V 20GΩ Megohmmeter & AC Voltage Tester Professional Series

Ensuring dependable accuracy during daily operations requires professional equipment engineered to withstand demanding laboratory and industrial environments. The UNI-T UT502C/UT501C Digital Insulation Tester, 2500V 20GΩ Megohmmeter & AC Voltage Tester provides verified stability, user-friendly operation, and certified safety compliance across standard maintenance protocols. Discover our complete line of diagnostic and testing instruments in the Resistance Meter catalog.

Comprehensive Testing Functions

Measures AC/DC voltage, current, resistance, capacitance, frequency, and rapid continuity with loud acoustic beeper feedback.

Smart User Features

Data hold freezes fluctuating values on screen, backed by automatic power-off and clear LED display backlighting in dark spaces.

💡

Testing Insight: CAT Rating Isolation in Electrical Multimeters

CAT III and CAT IV rated meters incorporate internal high-energy ceramic fuses and wide PCB creepage spacing to protect operators against explosive transient arc flashes.

Ordering & Model Verification

Verify voltage range, display counts, and included accessories before selecting your model in the right-side order box.

Related technical collections:
Digital Multimeter |
Digital Clamp Meter

Related products:
UT502A 2500 V insulation resistance tester |
UT501A 1000 V digital megohmmeter |
XT501A/XT502A insulation resistance tester |
UT595 multifunction installation tester |
UNI-T UT273 clamp-on ground resistance tester

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