The UT512E is the 2.5 kV entry to the UT513 family, rated CAT IV 600 V. It tests insulation resistance up to 2.5 TΩ at test voltages to 2500 V — well matched to low- and medium-voltage motors, cables, and switchgear where a full 5 kV output isn't required but a wide, high-resistance range still is.
It includes Polarization Index testing, 10% stepped-voltage profiling, a comparison function, and capacitance measurement, with automatic discharge after each test. Results store 999 sets and transfer over USB, and a 14.8 V 5200 mAh rechargeable pack runs a full field day. It's backed by UNI-T's nearly 40 years of test-meter manufacturing.
Key Features
Test voltage output up to 2500 V
Insulation resistance up to 2.5 TΩ, accuracy ±(5%+5)
Polarization Index (PI) timed test
10%-of-range stepped-voltage profiling
Capacitance measurement up to 2 µF
Comparison function for pass/fail
Automatic discharge and auto-ranging
999-set storage with USB transfer
CAT IV 600 V; 14.8 V 5200 mAh rechargeable Li-ion
UT512E Details
2.5 kV Insulation Testing
Test voltages to 2500 V and a measurement range to 2.5 TΩ cover low- and medium-voltage insulation work — motor windings, cable, and switchgear — without the higher output of the 5 kV models.
PI & Stepped-Voltage Profiling
A timed Polarization Index test flags moisture and aging, and 10% stepped-voltage profiling stresses the dielectric in stages to reveal marginal insulation that a single fixed reading would pass.
Capacitance & Comparison
Built-in capacitance measurement to 2 µF supports cable and winding work, and a comparison function sets a pass/fail threshold for fast, repeatable go/no-go decisions.
Safety & Field Build
Automatic discharge clears stored charge at the end of each test. The CAT IV 600 V rating and a 14.8 V 5200 mAh rechargeable pack make it ready for industrial and utility field use.
Compare the UT513 Series
UT512E
UT513A
UT513B
UT513C
Max test voltage
2500 V
5 kV
5 kV
5 kV
Max insulation resistance
2.5 TΩ
1 TΩ
2 TΩ
5 TΩ
Voltage stepping (10% of range)
Yes
—
Yes
Yes
PI / DAR diagnostics
PI
PI
PI / DAR
PI / DAR
Capacitance measurement
2 µF
—
—
0.01–15 µF
Data storage
999 sets
18 sets
999 sets
999 sets
Bluetooth app
—
—
—
Yes
Safety rating
CAT IV 600 V
CAT III 600 V
CAT IV 600 V
CAT IV 600 V
Applications
Low- and medium-voltage motor and generator winding tests; cable and feeder insulation checks; switchgear and panel maintenance; and commissioning where a 2.5 kV test voltage is sufficient.
Frequently Asked Questions
What is the UT512E's test voltage and range?
Test voltages up to 2500 V and insulation resistance measurement up to 2.5 TΩ.
How does the UT512E relate to the UT513 models?
It is the 2.5 kV entry to the same family; the UT513A/B/C step up to 5 kV output with higher resistance ranges and additional diagnostics.
Does the UT512E measure capacitance?
Yes — up to 2 µF, alongside insulation resistance, PI, and stepped-voltage testing.
⚠️ WARNING (California Proposition 65): This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, please visit www.P65Warnings.ca.gov.
