.ut-cat{color:#333;font-family:Arial,Helvetica,sans-serif;line-height:1.5;} .ut-cat h4{color:#1a1a1a;font-size:1.15em;margin:1.5em 0 .5em;padding-bottom:.25em;border-bottom:2px solid #ccc;} .ut-cat h2{color:#1a1a1a;font-size:1.25em;margin:1.2em 0 .4em;} .ut-cat h3{color:#222;font-size:1.05em;margin:1em 0 .3em;} .ut-cat p{margin:.6em 0;} .ut-cat ul{margin:.5em 0;padding-left:1.4em;}.ut-cat li{margin:.25em 0;} .ut-cat img{max-width:100%;height:auto;} .ut-cat table{border-collapse:collapse;width:100%;margin:.5em 0;} .ut-cat th,.ut-cat td{border:1px solid #ddd;padding:6px 10px;text-align:left;vertical-align:top;} .ut-cat td strong{color:#222;} Overview 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. Specifications DC Voltage In 1000 V AC Voltage In 750 V Capacitance 2 µF Max Resistance 2.5 TΩ Resistance Accuracy ±(5% + 5) Max IR Test Voltage 2500 V Insulation Resistance Yes Test Voltage Accuracy 0% – 20% Short Circuit Current 5 mA Charge Current 5 mA Auto Ranging Yes Comparison Function Yes Polarization Index Yes Step Voltage Yes Auto Discharge Yes Interface USB Data Storage 999 CAT Rating CAT IV 600 V Battery 14.8 V 5200 mAh lithium Weight 1800 g Dimensions 238 × 166 × 90.5 mm Documentation UT512E Datasheet UT512E User Manual
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