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Introduction

Uni-rendModelUT512insulationresistancetesteT r

(hereafte"theMeter")ishandheldinstrumenr, a t

designedprimarilymakeresisanceinsulaio to t/ tn

resistance measurement.

Unpacking the Meter

The Meter includes the following items:

Table 1. Unpacking Inspection

Item

1

2

3

4

5

6

7

8

9

Description

English Operating Manual

One-plug tt eslead to one alligator

clip ( Black )

O nepluges tt lead to one alligator

clip ( Green )

Two-plug test lead to one

alligator clip ( Red )

1.5V Battery (LR14 / R14)

Tool Box

USB Interface Cable

Software

Power adaptor (input voltage

230V, 50/60Hz, 50mA, output

DC14.5V, 600mA) (optional,

available at extra cost)

Qty

1 pc

1 pc

1 pc

1 pc

8 pcs

1 pc

1 pc

1 pc

1 pc

Intheeventyoufindanymissingordamage,pleas e

contact your dealer immediately.

Safety Information

T hisMeercompliest with EN 61010-1:2010 fety sameasurement

requirement:Pollution Degree 2, measurement

category CAT III 600V and Double Insulation.

CAT II (measurement category): Test and measuring

circuits connected directly to utilization points (socket outlets

and similar points) of the low-voltage MAINS installation.

Use the Meter only as specified in this operating manual,

otherwisetheprotectionprovided bytheMetermay be

impaired.

Danger identifies conditionsandactions thatpos e

hazard(s) to the user.

Warning alerts users to avoid electric shock.

Cautionidentifies conditionsandactions thatma y

damage the Meter and affect accurate

measurement.

Danger

Useof instrumentin a manualnot specifed byth e

manufactuer may impair safety features/protection

proved by the ent.d the fgidquipme Reaollowin

sarmacarerefety infotion fullfoy be us oring

servicing the instrument.

Do not apply more than 600V.

Do not use the Meter around explosive gas,

vapor or dust.

Do not use the Meter in a wet environment.

Whenusingthetest leads,keepyourfigure s

away from the lead contacts. Keep your

figuresbehind the fingerguards ontheleads .

Do t u the th any p or cornoseMeterwiartsve

removed.

Operating Caution identifies conditions that user

needs to t akeexrat careduringopera ting the Meter

Warning

Donotuse theMeter ifitis damagedor metal

part is exposed. Look for cracks or missing

plastic.

Be careful when working above33V rms,46.7 V

ac rms or70V DC.Suchvoltages pose a shock

hazard.

Dischargeall loadingof circuit under testafte r

measuring high voltage.

When carrying out insulation measurement,

do not contact the circuit under test.

Caution

Whenperforming resistancetests,remove all

power from the circuit to be measured and

discharge all the power.

Whingthen icserv e Meter, u y seonlonly the

test leads and power adaptor with the same

model number or identical electrical

specifications.

Do not use the Meter if the battery indicator

(

) a showsbatteryemptycondition. Take

thebatteryoutfrom theMeterifit isnotuse d

for a long time.

Do not use or store the Meter in an

environment of high temperature, humidity,

explosive, inflammable and strong magnetic

field. The performance of the Meter may

deteriorate after dampened.

So cth a m dftlondildetergent s be udhouldse

to clean the surface of the Meter when

servicing.Noabrasiveand solventshould be

ud to pnt the su of the omsereverfaceMeterfr

corrosion, damage and accident.

Dry the Meter before storing if it is wet.

Risk of electric shock

Grounding

Empty of Built-In Battery

Conormsf to St of andardsEuropeanUnion

International Electrical Symbols

International symbols on the Meter and in this manual

are explained in Table 2.

Table 2. International Electrical Symbols

Battery Saver (Sleep Mode)

TheMeter enterstheSleep Mode andblanks thedispla y

ifthereisnobuttonpressfor15minutes.Thisisdon e

toconservebatterypoweTheMetercomesout r. of

SleepModewhebuttonispressedandhol n ON/OFF d

for 1 second.

Battery Indication

There is a battery indicator shown on the upper left corner

of the display. Please refer to Table 3 for detailed

explanation.

Battery Voltage

5.9V ~ 10.6V. It means the battery is

empty, Do not use the Meter as it

cannot

guarantee accuracy.

10.7V ~ 11.1V. It means the battery is

almost empty, replacing battery is

necessary. Atthis status,the Meter can

still output 500V and 1000V to measure,

the measured accuracy will not be

affected.

11.2V ~ 12.2V

12.2V or more

Table 3. Battery Indication

Battery

Indicator

The Meter Structure

BelowFigureand 1 TableshowstheMeterfron 4 t

structure and description

Do not change battery when the Meter is in

wet environment.

Place test leads in proper input terminals.

Make sure all the test leads are firmly

connected to the Meter's input terminals.

Make sure the Meter is turned off when

opening the battery compartment.

Figure1.TheMeterFrontStructur e

GnkreeBlac

Red

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Table 4. Meter Front Description

LCD

Arrow Button

Emergency Stop

Data Clear the Display Backlight Button

Arrow Button

On/Off Button

Compare Button

Insulation Resistance Button

DC ButtonVoltage Measurement

Timer Button.

AC ButtonVoltage Measurement

Test Button

USB Button

Data Store Button.

Data Recall Button

Arrow Button

17

18

19

20

21

22

Arrow Button

LINE: High voltage input terminal

( Connected to two-plug red test lead )

High voltage line shielding input terminal

( Connected to two-plug red test lead )

GUARD: Grounding protection input terminal

( Connected to one-plug black test lead )

EATH:R Highresistance measurement input

terminal ( Connected to one-plug green

test lead )

Testing leads:

Two-plug te redstleadonealliga to torlip c.

One-plug k tblacesleadt to onealligaort clip.

One-plug green test lead to one alligator clip.

Below Figure 2 and Table 5 shows the Meter side

structure and description

Figure 2. The Meter Side Structure

TableideDeipio 5. Meter S scrtn

1 Safety Shutter

2 Power adaptor Input Terminal

3 USB Port

Display

Table 6 and Figure 3 describe the display.

Figure 3. Display

Table 6. Display Description

Number

1

2

3

4

5

6

7

8

9

10

11

Meaning

Analogue bar graph

Risk of electric shock

Battery life indicator

Indicator for timer

Timer 1 symbol

Timer 2 symbo

Indicatesselectedpass/failcompare value

Indicator for power adaptor

The continuity buzzer is on

Indicator for data store full

Data store is on

12

13

14

15

16

17

18

19

20

21

Data recall is on

Indicator for polarization index

Step symbol

Compare result: Pass

Compare result: Fail

Indicator for DC voltage

Indicator for AC voltage

Indicates negative reading

Unit symbols

Indicator for clearing

Table 7. Key Description

Turn on or off the Meter. Press and

holdhe t buonortt f 1 to t thesecondurn

Meter on. Press again to turn off the

Meter.

The Meter defaults at 500V range and

under continuous measurement of

insulation resistance when turned on.

Emergency stop button. Press this

button when the Meter crashes down

and cannot turn off the power.

Key Functions

ON/OFF

E-STOP

Short press to turn on or off the display

backlight

Long press to clear thestored data.

Press to store the current measurement

value. Themaximum numberof stored

reading is 18.Whenthe stored readings

memory is full, the Meter shows FULL

and stop storing. Press and hold

CLEAR /

to clear the stored value

inorder to st t t torehenexmeasuremen

CLEAR

/

SAVE

value.

LOAD

Press once to recall the first stored

value.

Press again to exit Load feature.

Load feature can only be used when

there is no high voltage output.

When the insulation resistance

measurement has no testing voltage

output, press to select previous voltage

range.

Under load mode: press to recall the

previous stored value.

When the insulation resistance

measurement has no testing voltage

output, press to select next voltage

range.

Under load mode: press to recall the

next stored value.

When setting the timer for the

measurement of insulationresistanc e

or polarization index, press to

decrementthetime. Themaximu m

length of time is 15 minutes and 30

seconds, theMeter willautomaticall y

carry out measurement.

When compare function is enabled for

insulation resistance measurement,

press to decrement a resistance

comparing value.

After polarization index measurement,

press to display polarizationindex,

TIME 2 and TIME 1 insulation

resistance values in sequence.

When setting the timer for the

measurement of insulationresistanc e

or polarization index, press to

increment the time. The maximum

length of time is 30 minutes and 30

sec tonds,he Meter will automaticyall

carry out measurement.

When compare function is enabled for

insulation resistance measurement,

press to increment a resistance

comparing value.

After polarization index measurement,

press to display t polarizaionindex,

TIME2 and TIME 1 insulation

resistance values in sequence.

Press once to start the data

transferring to the computer viaUSB ,

USBsymbol shows on the display.

Press again to stop the data

transferring to the computer viaUSB ,

USBsymbol disappears.

USB

Set a pass / faillimit for insulation tests.

The default value is 10M

Press to step through continuous,

timed and polarization index

measurements in sequence.

Press to turn on/off the output of

insulation resistance test voltage.

Press to initiate insulation resistance

measurement

Press to initiate DC voltage

measurement

Pres to initiate AC voltage

measurement

COMP

TIME

TEST

IR

DCV

ACV

Measurement Operation

This section explains how to make measurements.

Press and hold to turn on the Meter, pressON/OFF

againtoturn off theMete r. The meter defaults at 500V

range and continuous measurement of insulation

resistance when turned on.

A. Measuring Voltage

Figure 4. Voltage Measurement

Red

Green

To avoid harm to you ordamage tothe Meter,

please do not attempt to measure voltages

higher than 600V or 600V rms, although

readings may be obtained.

Specialcareshouldbetaken whenmeasurin g

high voltage.

Operating Caution

To msure vt, set t Meter as Fre 4 eaolageupheiguand

do the following:

Press or button to select DC voltage orDCVACV

AC voltage measurement

1.

CAT III (measurement category): Test and measuring

circuits connected to the distribution part of the building’s

low-voltage MAINS installation.

Equipment protected throughout by DOUBLE

INSULATION or REINFORECD INSULATION

Direct current

Alternating current

Caution

Produktspecifikationer