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UNI-T
Authorized brand
The UNI-T UT513B is a professional-grade 5kV digital insulation resistance tester engineered for electrical engineers, maintenance professionals, and contractors who demand precise measurements and comprehensive diagnostics for high-voltage equipment. With its innovative dot matrix display and measurement capability up to 2TΩ, the UT513B represents a significant advancement in portable insulation testing technology.
Featuring multi-voltage testing capabilities, advanced timing functions, and integrated analysis tools like PI and DAR measurements, the UT513B delivers laboratory-grade precision in a field-ready instrument. The rechargeable lithium battery provides extended operation for comprehensive testing sessions, while the CAT IV 600V safety rating ensures maximum protection in industrial environments.
Whether you're testing motors, transformers, cables, or switchgear, the UNI-T UT513B combines powerful diagnostic capabilities with user-friendly operation to streamline your testing process and provide the insights needed for confident decision-making about critical electrical systems.
Key Features
Rated voltage UT513B
250V <0.25MΩ: reference only
0.25MΩ~2.49GΩ: ±5%+5)
2.50GΩ~24.9GΩ: ±(10%+10)
25.0GΩ~100GΩ: reference only
500V <0.50MΩ: reference only
0.50MΩ~4.99GΩ: ±(5%+5)
5.00GΩ~49.9GΩ: ±(10%+10)
50.0GΩ~200GΩ: reference only
1000V <1.00MΩ: reference only
1.00MΩ~9.99GΩ: ±(5%+5)
10.0GΩ~99.9GΩ: ±(10%+10)
100GΩ~400GΩ: reference only
2500V <2.50MΩ: reference only
2.50MΩ~24.9GΩ: ±(5%+5)
25.0GΩ~249GΩ: ±(15%+10)
250GΩ~1.00TΩ: reference only
5000V <5.00MΩ: reference only
5.00MΩ~49.9GΩ: ±(5%+5)
50.0GΩ~499GΩ: ±(15%+20)
500GΩ~2.00TΩ: reference only
Capacitance test NA
Output voltage stepping voltage range
250V 250V, 275V, 300V
500V 250V, 300V, 350V, 400V, 450V, 500V, 550V, 600V
1000V 500V, 600V, 700V, 800V, 900V, 1000V, 1100V, 1200V
2500V 1250V, 1500V, 1750V, 2000V, 2250V, 2500V, 2750V, 3000V
5000V 2500V, 3000V, 3500V, 4000V, 4500V, 5000V
DC voltage 30~1000VDC: ±(3%+5)
AC voltage 30~750VAC(50Hz/60Hz): ±(3%+5)
Current 0.01nA~3.5mA
Short-circuit current about 3.5mA
Main features
PI test √
DAR test √
Timing measurement √
Resistance Comparison √
Voltage step √
Voltage monitoring (of external object) Monitor the voltage of measured object and the discharge state after testing. If voltage is higher than 36V, it is forbidden to test for protecting the tester and the operator
Timer testing Record testing time automatically. Timing range: 0s~99m and 59s
Data storage 999 set
USB interface (data transmission) √
Bluetooth APP N/A √
Low Battery indication √
Auto power off Around 15 minutes
Overvoltage category CAT Ⅳ 600V