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Introduction

Uni-rendModelUT5T 11 Insulation Resistance Tester

(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

Description

English Operating Manual

One-plug tt eslead to onealliga tor

Two-plug test lead to one alligator

1.5V Battery (R14 or LR14)

Tool Box

Power adaptor (optionally,

available at extra cost)

Qty

1 pc

1 pair

1 pc

8 pcs

1 pc

1 pc

In the event you find any missing or damaged part,

please contact your dealer immediately.

Safety Information

T hisMeercompliest with EN 61010-1:2010

measurementrequirement: Pollution Degree 2,

measurement category CAT III 600V, CAT II 1000V

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.

CAT III (measurement category): Test and measuring

circuits connected to the distribution part of the building’s

low-voltage MAINS installation.

Use the Meter only asspecified in thisoperating manual,

otherwisetheprotectionprovided bytheMeter may be

impaired.

Danger identifies conditionsandactions thatpos e

hazard(s) to the user.

W arningalerts users to avoid electric shock.

Cautionidentifies conditionsandactions thatma y

damagetheMeterandaffectaccurat e

measurement.













Danger

Usestrmemaecfe of inunt a innunoal t spid by

themanufactuermayimpairsafetyfeatures /

protectionprovidedbythe equipment.Readth e

following safety informationcarefully beforeusin g

or servicing the instrument.

Do not apply mo than re1000VDC or 750VAC.

Do not use the Meter around explosive gas,

vapor or dust.

Do not use the Meter in a wet environment.

When using the test leads, keep your figures

away from the lead contacts. Keep your

figuresbehind thefinger guards onthe leads.

Do not use the Meter with any parts or cover

removed.

When carrying out insulation measurement,

do not contact the circuit under test.

Warning











Donotuse theMeter ifit isdamaged ormeta l

part is exposed. Look for cracks or missing

plastic.

Becarefulwhenworking above33Vrms,

46.7Vac rms and 60Vdc. Such voltages pose

a shock hazard.

Discharge all loading of circuit under test after

measuring high voltage.

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.

Caution

When performingresistancetests, removeal l

power from the circuit to be measured and

discharge all the power.

Risk of electric shock

Equipment protected throughout by DOUBLE

INSULATION or REINFORECD INSULATION

Direct current

Alternating current

Grounding

Caution

Low Battery Indication

Conforms to Standards of European Union









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

(

) shows a batteryemptycondition. Take

thebatteryoutfrom theMeterif itisnot used

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 dgent s be udftlondildeterhouldse

to clean the surface of the Meter when

servicing.Noabrasiveand solventshould be

ud to pnt the su of the sereverfaceMeterfr om

corrosion, damage and accident.

Dry the Meter before storing if it is wet.

InternationalElectrical Symbols

International symbols on the Meter and in this manual

are explained in Table 2.

Table 2. International Electrical Symbols

Battery Saver (Sleep Mode)

The Meter enters theSleep Mode andblanks the display

ifthereisno buttonpressfor15 minutes. Thisisdon e

toconservebatterypowe r. ofTheMetercomesout

Sleep Mode whenON /OFFbuonistt pressed t t.woimes

The 15 minutes timer is disabled during any insulation

resistance measurement. The time period starts

immediately following any measurement.

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

8.5V or less. It means the battery is

empty, don’t use the Meter as it cannot

guarantee accuracy.

8.6V~9.0V. It means thebattery isalmost

empty, replacing battery is necessary.

Accuracy will not be affected.

9.1V~10.2V

10.3V or more

Table 3. Battery Indication

Battery

Indicator

The Meter Structure

Below Figure 1 and Table 4 shows the Meter front

structure and description

Figure1.TheMeterFrontStructur e

1

2

3

4

5

6

7

8

9

10

11

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

Voltage Measurement

Timer Button.

Low Resistance

Measurement Button

12

13

14

15

16

17

18

19

20

21

22

Test Button

Step Button

Data Store Button.

Data Recall Button

Arrow Button

Arrow Button

LINE: Resistance

input terminal

COM: Voltage input

terminal

EARTH: Resistance

input terminal

V: Voltage input

terminal

Testing leads

BelowFigureand 2 TableshowstheMetersid 5 e

structure and description

Figure 2. The Meter Side Structure (Side View)

TableideDeipio 5. Meter S scrtn

1 Safety Shutter

2 Power adaptor Input Terminal

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

Indicator for DC voltage

Indicator for data store full

Indicator for clearing

Indicator for AC voltage

Indicator for timer

Step symbol

Indicates selected pass/fail compare value

Indicates for negative reading

Timer 1 symbol

Timer 2 symbol

Data store is on

12

13

14

15

16

17

18

19

20

21

Data recall is on

Indicator for polarization index

Unit symbols

The continuity buzzer is on

Compare feature pass

Analogue bar graph

Risk of electric shock

Compare feature fail

Indicator for power adaptor

Battery life indicator

Key Functions

Table 7. Key Description

ON/OFF

CLEAR/

SAVE

LOAD

Turn on or off theMete r. Pressand hold

the button for 1 second to turn the Meter on.

Short press to clear the stored data,long

press to turn on and off the display backlight.

Pressto store the current measurement

value. Themaximum numberof stored

reading is 18. W t sthenheored readings

memory is full, the Meter shows FULL

andstop storing.Press CLEARto clear

the stored value in order to store the

next measurement value.

Press d value.oncetorecallthefirststore

Press again to exit Load feature.

Load feature can only be usedwhe n

there is no high voltage output.

Under insulation resistance measurement mode:

press to select previous voltage range.

Under load mode: press to recall

the previous stored value.

Under insulation resistance measurement mode:

press to select next voltage range.

Under load mode: press to recall

the next stored value.

When compare function is enabled

for insulation resistance

measurement, press to decrement

a resistance comparing value.

After polarization indexmeasurement ,

press to display polarization index,

TIME 2 and TIME 1 insulation

resistance values in sequence.

When seting the timer for the

measurement ofinsulationresistance

or polarization index, press to

increment the time. The maximum

length of time is 30 minutes, the Meter

will automatically carry out

measurement.

When compare function is enabled

for insulation resistance

measurement, s to increment a pres

resistance comparing value.

After polarizationindex measurement,

press to display polarization index,

TIME 2 and TIME 1 insulation

resistance values in sequence.

Press to display S1 S2 S3 in

sequence.

When the Meter is under timed

measurement or polarization index

measurement:

S1 means increment of 1, then

each press of

increase 1 or

decrease 1.

S2 means increment of 10, then

each press of

increase 10 or

decrease 10.

S3 means increment of 30, then

each press of

increase 30 or

decrease 30.

STEP

When setting the timer for the

measurement ofinsulationresistanc e

or polarization index, press to

decrement the time. The maximum

length of time is 30 minutes, the

Meter will automatically carry out

measurement.

When the Meter is under compare

mode:

S1 means increment of 1, then

each press of

increase 1 or

decrease 1.

S2 means increment of 10, then

each press of

increase 10 or

decrease 10.

S3 means increment of 100, then

eah pcressf o

ine 100 ocreasr

decrease 100.

Set a pass / fail limit for insulation tests.

The default value is 100M

Pres 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

COMP

TIME

TEST

Ho

Press to initiate low resistance

measurement

Press to initiate voltage measurement

Lo

DVC

/ACV

Emergency stop button. Press this

button when the Meter crashes down. and

cannot turn off the power.

E-STOP

Measurement Operation

This section explains how to make measurements.

A. Measuring Voltage

Figure 4. Voltage Measurement

Black

Red

Special care should be taken when measuring

high voltage.

Caution

Warning

To avoidharmtoyou ordamage to theMete r,

please sdonotattempttomeasurevoltage

higher hthan1000VDCor750VAC,althoug

readings may be obtained.

To msure vt, set t Meter as Fre 4 eaolageupheiguand

do the following:

Press or button to select DC voltage orDCVACV

AC voltage measurement

Insert the red test lead into the terminal and theV

black test lead into the terminal.COM

Connectthe red andblack alligator clip tothe circuit

to be measured.

During measurement, when negative voltage is

present on the red test lead, then “-“ shows on the

display.

1.

2.

3.

4.

Produktspecifikationer