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
100MΩ ~ 20.00GΩ: ±(5% + 5)
✓ Sound & Light Alarm (<4MΩ warning)
✓ Auto Power Off & Low Battery Indication
(Optional power supply adapter available, no charging function)
✦ 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
Q1: What is the main difference between the UT501C and UT502C?
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.
Q2: How does the self-locking switch work?
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.
Q3: When does the buzzer alarm activate?
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.
Q4: Can I plug this tester into a wall outlet for power?
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
$72.99 – $91.99Price 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
$72.99 – $91.99Price 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. |
100MΩ ~ 20.00GΩ: ±(5% + 5)
✓ Sound & Light Alarm (<4MΩ warning)
✓ Auto Power Off & Low Battery Indication
(Optional power supply adapter available, no charging function)
✦ 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
Customer Reviews
Discover More from Xin Tester
Hantek HT500B & HT300B Oscilloscope Probes (500MHz / 300MHz, Passive High Impedance)
$49.99 – $65.99Price range: $49.99 through $65.99
🚚 Delivery: as soon as Fri. Nov 6
UNI-T UT217 Series Professional Oscilloscope Clamp Multimeter (UT217A / UT217B)
$109.99 – $138.99Price range: $109.99 through $138.99
🚚 Delivery: as soon as Fri. Nov 6
UNI-T UT25CL Advanced Circuit Tracer Kit & Breaker Finder (8-480V)
$235.99 Original price was: $235.99.$205.99Current price is: $205.99.
🚚 Delivery: as soon as Wed. Nov 11
Hantek HT20COP Coil-on-Plug Ignition Signal Probe with LED
$53.99 – $76.99Price range: $53.99 through $76.99
🚚 Delivery: as soon as Fri. Nov 6
UNI-T UT89X Professional True RMS Digital Multimeter (1000V/20A)
$43.69 – $78.99Price range: $43.69 through $78.99
🚚 Delivery: as soon as Fri. Nov 6

















Reviews
There are no reviews yet