UNI-T UT502A Megger Insulation Resistance Tester 2500V

UNI-T UT502A Megger Insulation Resistance Tester 2500V

UNI-T
  • Testing insulation on transformers.
  • Evaluating insulation of generators and high-voltage motors.
  • Verifying cable and capacitor insulation integrity.
  • Inspecting insulation in arresters and industrial switchgear.

4,750.00 EGP

UNI-T UT502A Megger Insulation Resistance Tester 2500V

The UNI-T UT502A is a 2500V insulation resistance tester with a 0.01 MΩ to 20 GΩ range, ideal for high-voltage insulation testing in industrial settings.

The UNI-T UT502A presents a durable and dependable persona from the first glance. Encased in a sturdy housing capable of enduring demanding environments, it’s built to function smoothly outdoors and onsite. The sizable backlit display ensures readings remain easily visible even in low-light scenarios, while intuitive controls and a clear rotary dial keep navigation straightforward under pressure.

Capable of delivering test voltages up to 2500 V and measuring insulation resistance across an impressive range (up to 20 GΩ), the UT502A empowers technicians to handle high-voltage insulation diagnostics with assurance. It provides essential assessment tools such as Polarization Index and Dielectric Absorption Ratio testing, giving a complete perspective on insulation health. Automatic discharge and real-time high-voltage warnings boost both safety and workflow.

Features:
  • Backlit 2000-count LCD display with overload indication.
  • Auto discharge function for safety after testing.
  • Continuous low-resistance measurement with return-to-zero capability.
  • Integrated PI (Polarization Index) and DAR (Dielectric Absorption Ratio) diagnostics.
  • Auto-ranging and low battery indicator for seamless use.
  • Audible buzzer and red warning light for high-voltage alerts.
  • Auto power-off to preserve battery life.
SKU: UT502A Category: Brand:
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Specifications Range UT501A UT501B UT502A
Insulation resistance (Ω) Test voltages 100V/250V/500V/1000V 0%~10%
250V/500V/1000V 0%~10%
500V/1000V/2500V 0%~10%
100V 0MΩ~100MΩ ±(3%+5)
250V 0MΩ~99.9MΩ ±(3%+5) ±(3%+5)
100MΩ~5GΩ ±(5%+5) ±(5%+5)
500V 0MΩ~99.9MΩ ±(3%+5) ±(3%+5) ±(3%+5)
100MΩ~5GΩ ±(5%+5) ±(5%+5) ±(5%+5)
1000V 0MΩ~99.9MΩ ±(3%+5) ±(3%+5) ±(3%+5)
100MΩ~5GΩ ±(5%+5) ±(5%+5) ±(5%+5)
2500V 0MΩ~99.9MΩ ±(3%+5)
100MΩ~9.9GΩ ±(5%+5)
10GΩ~20GΩ ±(10%+5)
Load current 50V (R=50kΩ) 1mA 0%~10% 0%~10% 0%~10%
100V (R=100kΩ) 1mA 0%~10% 0%~10% 0%~10%
250V (R=250kΩ) 1mA 0%~10% 0%~10% 0%~10%
500V (R=500kΩ) 1mA 0%~10% 0%~10% 0%~10%
1000V (R=1MΩ) 1mA 0%~10% 0%~10% 0%~10%
2500V (R=1MΩ) 1mA 0%~10%
Short-circuit current <2mA <2mA <2mA
Low resistance (Ω) 0.01Ω~200Ω (about 5.0V/>200mA） ±(2%+3) ±(2%+3)
AC voltage (V) 30V~750V ±(2%+3)
30V~600V ±(2%+3) ±(2%+3)
Features
Display count 2000 2000 2000
DAR 60s/15s and 60s/30s √ √
PI √ √
Auto range/Low battery indication √ √ √
LCD backlight/Light alarm √ √ √
Buzzer alarm/High voltage indication √ √ √
Over load indication/Auto discharge √ √ √
Test voltage secondary display √ √ √
10MΩ internal resistance test √ √ √
Meets IEC 61557   61557-1:2007; 61557-2:2007; 61557-4:2007 (UT502A only)
General Characteristics
Power 1.5V battery (LR6) x 6   √   √   √
Display 70.6mm x 34mm   √ √   √
Product Color Red and grey √   √   √
Product net weight 500g   √   √   √
Product size 150mm x 100mm x 71mm   √   √   √
Standard accessories Batteries, test leads, alligator clips, gallus Batteries, test leads, alligator clips, gallus Batteries, test leads, alligator clips, gallus, test probes
Standard individual packing   Gift box, carrying bag, English manual   Gift box, carrying bag, English manual   Gift box, carrying bag, English manual
Specifications Range UT501A UT501B UT502A
Insulation resistance (Ω) Test voltages 100V/250V/500V/1000V 0%~10%
250V/500V/1000V 0%~10%
500V/1000V/2500V 0%~10%
100V 0MΩ~100MΩ ±(3%+5)
250V 0MΩ~99.9MΩ ±(3%+5) ±(3%+5)
100MΩ~5GΩ ±(5%+5) ±(5%+5)
500V 0MΩ~99.9MΩ ±(3%+5) ±(3%+5) ±(3%+5)
100MΩ~5GΩ ±(5%+5) ±(5%+5) ±(5%+5)
1000V 0MΩ~99.9MΩ ±(3%+5) ±(3%+5) ±(3%+5)
100MΩ~5GΩ ±(5%+5) ±(5%+5) ±(5%+5)
2500V 0MΩ~99.9MΩ ±(3%+5)
100MΩ~9.9GΩ ±(5%+5)
10GΩ~20GΩ ±(10%+5)
Load current 50V (R=50kΩ) 1mA 0%~10% 0%~10% 0%~10%
100V (R=100kΩ) 1mA 0%~10% 0%~10% 0%~10%
250V (R=250kΩ) 1mA 0%~10% 0%~10% 0%~10%
500V (R=500kΩ) 1mA 0%~10% 0%~10% 0%~10%
1000V (R=1MΩ) 1mA 0%~10% 0%~10% 0%~10%
2500V (R=1MΩ) 1mA 0%~10%
Short-circuit current <2mA <2mA <2mA
Low resistance (Ω) 0.01Ω~200Ω (about 5.0V/>200mA） ±(2%+3) ±(2%+3)
AC voltage (V) 30V~750V ±(2%+3)
30V~600V ±(2%+3) ±(2%+3)
Features
Display count 2000 2000 2000
DAR 60s/15s and 60s/30s √ √
PI √ √
Auto range/Low battery indication √ √ √
LCD backlight/Light alarm √ √ √
Buzzer alarm/High voltage indication √ √ √
Over load indication/Auto discharge √ √ √
Test voltage secondary display √ √ √
10MΩ internal resistance test √ √ √
Meets IEC 61557   61557-1:2007; 61557-2:2007; 61557-4:2007 (UT502A only)
General Characteristics
Power 1.5V battery (LR6) x 6   √   √   √
Display 70.6mm x 34mm   √ √   √
Product Color Red and grey √   √   √
Product net weight 500g   √   √   √
Product size 150mm x 100mm x 71mm   √   √   √
Standard accessories Batteries, test leads, alligator clips, gallus Batteries, test leads, alligator clips, gallus Batteries, test leads, alligator clips, gallus, test probes
Standard individual packing   Gift box, carrying bag, English manual   Gift box, carrying bag, English manual   Gift box, carrying bag, English manual

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