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Related Manuals for UNI-T UT512D
Summary of Contents for UNI-T UT512D
- Page 1 P/N:110401111817X UT512D/UT512E 2.5kV Insulation Resistance Tester User Manual...
- Page 2 Preface Thank you for purchasing this brand new product. In order to use this product safely and correctly, please read this manual thoroughly, especially the safety notes. After reading this manual, it is recommended to keep the manual at an easily accessible place, preferably close to the device, for future reference.
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Page 3: Table Of Contents
II. Accessories --------------------------------------------------------------- 9 has capacitance and low resistance measurement functions. III. Safety Information ------------------------------------------------------9 UT512D/UT512E is mainly used to measure insulation resistance of cable, motor, IV. Electrical Symbols ---------------------------------------------------- 11 power generator, transformer, mutual inductor, high-voltage switch, lightning V. External Structure ----------------------------------------------------- 11... - Page 4 100nF, it may cause reading to fluctuate significantly. Environment temperature: 23±5℃ "Overrange warning: For example, in the 1000V voltage output range of UT512D, Environment humidity: 45~75%RH, In the table below: The humidity must be less if the range is exceeded, it will display >400GΩ.".
- Page 5 Insulation resistance range UT512D 0.25MΩ~1.00TΩ; UT512E：0.25MΩ~2.50TΩ Rated voltage Output accuracy Display accuracy Output voltage Remark Output short-circuit current UT512D: About 3.5mA (10s); UT512E: About 5.0mA (10s) Voltage adjustment 250V 250V～300V range with step set Continuous insulation √ (default mode) at 10%:...
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Page 6: Accessories
Keep fingers behind the finger guard when perform measurement, do not touch exposed wire, ● connector, alligator clip, etc. to avoid electric shock. 7 8 PCS LR14 alkaline batteries (UT512D) The output voltage at right position before measurement, it is forbidden to switch over the output ●... -
Page 7: Electrical Symbols
It is applicable to test and measuring circuits connected at the CAT IV source of the building’s low-voltage MAINS installation VI. Button Description V. External Structure Fig. 6.1 UT512D Functional buttons Fig. 5.1 External structure Insulation resistance measurement mode Battery charging port DC voltage measurement mode... -
Page 8: Lcd Display
UT512D/E User Manual UT512D/E User Manual Increase; adjust time and resistance; cyclically display Decrease; adjust time and resistance; cyclically display Decrease, select low range or next group of data Read data Increase; adjust time and resistance; cyclically display Save data... -
Page 9: Button Operation
UT512D/E User Manual UT512D/E User Manual VIII. Button Operation Wi-Fi communication Power button Pass resistance comparison testing Long press this button for 2 seconds to turn on the tester (full symbols are displayed on LCD for 1 second), long press again to turn it off. The tester is designed with USB communication auto power off function. - Page 10 UT512D/E User Manual UT512D/E User Manual Data deletion button A. Under insulation resistance measurement condition and without testing voltage In “READ” state, short press “CLR” and then press “ENTER” to delete current data, output, press to progressively decrease at the step of corresponding range press “ESC”...
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Page 11: Testing Instructions
>12.2V Note: Do not perform measurement during charging for UT512E, as interlock is designed between testing and charging ports in structure. UT512D cannot be charged, if low battery occurs, please replace with battery in same type. Fig. 9.2.1 Tester charging... - Page 12 UT512D/E User Manual UT512D/E User Manual 9.3.1.1 Continuous Insulation Resistance Measurement When the tester is powered on, it enters the default mode of continuous insulation resistance measurement (250V output voltage). Connect test leads with measured object, press ▲ and ▼ to select high-voltage range, press to select fine- tuned step voltage, then press “TEST”...
- Page 13 UT512D/E User Manual UT512D/E User Manual 9.3.1.3 Polarization Index Measurement 9.3.1.4 Dielectric Absorption Ratio Measurement Polarization Index (PI) refers to the value of measured resistance in 10 minutes to Dielectric Absorption Ratio (DAR) refers to the value of insulation resistance in that in 1 minute.
- Page 14 UT512D/E User Manual UT512D/E User Manual Note: 9.3.1.5 Comparison Measurement Do not measure AC power supply over 750Vac or DC power supply over Press “COMP” button under insulation resistance testing condition without high 1000Vdc. It is possible to display higher voltage (10%), but it may damage the voltage output.
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Page 15: Wire Connection Modes
UT512D/E User Manual UT512D/E User Manual Calculation formula: Do not measure in live state! Black Where C is measured capacitance, Q is the accumulated charge in the measured Green object and U is the voltage of both ends of measured object. - Page 16 UT512D/E User Manual UT512D/E User Manual B. High resistance measurement with three-wire connection Wind the well-conducted bare wire around the exterior of inner insulation layer, Shield connect the safety terminal with the exterior conductor of inner insulation layer Green Black in order to prevent current leakage at the surface of measured object.
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Page 17: Maintenance
UT512D/E User Manual UT512D/E User Manual B. Testing of insulation resistance between grounding of primary winding and XI. Maintenance secondary winding Clean the casing: 1. Wipe the surface using soft cloth or sponge dipped with water 2. Do not immerse the tester in water to avoid tester damage.
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