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I. Overview

UT512D

250V,500V,1000V,2500V

0.25M

Ω

~

1.0T

Ω

About 

3.5mA

UT512E

250V,500V,1000V,2500V

0.25M

Ω

2.5T

Ω

~

About 

5.0mA

Models

Rated voltage

Insulation 

resistance range

Short-circuit 

current

1.1 Models

Contents

UT512D/UT512E is digital high-voltage insulation resistance tester, designed 
with multiple ranges including 250V, 500V, 1000V and 2500V, each with voltage 
fine-adjusted at a step of 10%. The tester can store 999 groups of data, which 
can be transferred to personal computer via USB cable or in real time. UT512E 
has capacitance and low resistance measurement functions.

UT512D/UT512E is mainly used to measure insulation resistance of cable, motor, 
power generator, transformer, mutual inductor, high-voltage switch, lightning 
arrester, and more, it is an ideal measurement meter for electric power, 
telecommunication, meteorology, machine room, oil field, electromechanical 
installation and maintenance, and power supply department of Industry and 
mining enterprise.

The user manual includes related safety information, warning, etc. Please read 
the related contents and follow all warnings and precautions.

UT512D/E User Manual

UT512D/E User Manual

I. Overview -------------------------------------------------------------------- 4

II. Accessories  ---------------------------------------------------------------  9

III. Safety Information  ------------------------------------------------------9

IV. Electrical Symbols  ----------------------------------------------------  11

V. External Structure  -----------------------------------------------------  11

VI. Button Description  ---------------------------------------------------  12

VII. LCD Display  ---------------------------------------------------------  14

VIII. Button Operation  ---------------------------------------------------  16

IX. Testing Instructions  -------------------------------------------------  19

X. Wire Connection Modes  --------------------------------------------  28

XI. Maintenance  -----------------------------------------------------------  31

Summary of Contents for UT512D

Page 1: ...UT512D UT512E 2 5kV Insulation Resistance Tester User Manual P N 110401111817X...

Page 2: ...Trend guarantees that the product is free from any defect in material and workmanship within one year from the purchase date This warranty does not apply to damages caused by accident negligence misu...

Page 3: ...ainly used to measure insulation resistance of cable motor power generator transformer mutual inductor high voltage switch lightning arrester and more it is an ideal measurement meter for electric pow...

Page 4: ...T512E 8 PCS LR14 alkaline batteries UT512D Error limit a of reading b digits one year warranty Environment temperature 23 5 Environment humidity 45 75 RH In the table below The humidity must be less t...

Page 5: ...ications UT512E Function Measurement range Accuracy Remark Low resistance measurement Open circuit voltage 5V Note If the measured resistance is 20 the buzzer alarms if 660 660 is displayed The short...

Page 6: ...bidden to use the tester without battery cover set in place otherwise it may pose a risk of electric shock Keep fingers behind the finger guard when perform measurement do not touch exposed wire conne...

Page 7: ...plug red lead GUARD Grounding protection outlet single plug green lead EARTH High resistance measurement outlet single plug black lead LCD segmented display screen Functional buttons USB port Carryin...

Page 8: ...testing Bluetooth Insulation resistance measurement mode AC DC voltage measurement mode Power on off Increase select high range or previous group of data Decrease adjust time and resistance cyclically...

Page 9: ...ress this button to switch to insulation resistance testing function V UT512E AC DC voltage testing button Without high voltage output short press V button to switch to AC DC voltage testing mode The...

Page 10: ...measurement Data deletion button In READ state short press CLR and then press ENTER to delete current data press ESC to exit data deletion function In READ state the symbol CLR and the storage capaci...

Page 11: ...rged if low battery occurs please replace with battery in same type 9 2 Battery Charging UT512E When charging with battery charger in power on state the battery power indicator and the charging symbol...

Page 12: ...hange Press TEST to perform test the LCD shows basic elements including battery power high voltage warning symbol leakage current real time output voltage measured insulation resistance testing value...

Page 13: ...tion resistance in Time1 9 3 1 4 Dielectric Absorption Ratio Measurement Dielectric Absorption Ratio DAR refers to the value of insulation resistance in 1 minute to that in 15 seconds It takes 1 minut...

Page 14: ...s if insulation resistance is less than comparison resistance the symbol FAIL will appear on the LCD otherwise PASS appears To return to the continuous measurement interface please press COMP in COMP...

Page 15: ...ltage input the danger symbol flashes in such case do not press the test button to measure resistance as shown in figure 9 3 4 2 Under resistance measurement function connect the black grounding lead...

Page 16: ...rminal with the exterior conductor of inner insulation layer and the unused cable Surface leakage current is conducted to the safety terminal so as to eliminate the surface leakage current at the meas...

Page 17: ...Red XI Maintenance 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 3 Do not store the tester if it is wet 4...

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