UNI-T UT513 Operating Manual

Model UT513

OPERATING MANUAL

Title Page

Model UT513: OPERATING MANUAL

1

Table of Contents

Introduction
Unpacking the Meter
Safety Information
International Electrical Symbols
Battery Saver (Sleep Mode)
Battery Indication
The Meter Structure
Display
Key Functions
Measurement Operation
A. Measuring Voltages
B. Measuring Insulation Resistance
a) Continuous Measurement
b) Timed Measurement
c) Polarization Index (PI) Measurement
d) Compare Function
The Use of Power Adaptor

5
5
6
8
8
8
9
12
14
17
17
19
20
20
21
22
23

2

24
25
25
26
27
27
27
28
28
29
29
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Model UT513: OPERATING MANUAL

Title Page

USB Interface
Maintenance
A. General Service
B. Replacing the Battery
Specifications
Safety and Compliances
Physical Specifications
General Specifications
Feature Summary
Detailed Accuracy Specifications
A. Voltage Measurement
B. Insulation Resistance Measurement

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Model UT513: OPERATING MANUAL

Table Title Page

1. Unpacking Inspection

2. International Electrical Symbols

3. Battery Indication

4. Meter Front Description

5. Meter Side Description

6. Display Description

7. Key Description

5
8
8
10
11
13
14

List of Tables

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Model UT513: OPERATING MANUAL

Figure Title Page

1. The Meter Front Structure

2. The Meter Side Structure

3. Display

4. Voltages Measurement

5. Insulation Resistance Measurement

6. The Use of Power Adaptor

7. USB Interface Connection

8. Battery Replacement

9
11
12
17
19
23
24
26

List of Figures

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Model UT513: OPERATING MANUAL

Introduction

Uni-Trend Model UT513 insulation resistance tester
(hereafter, ìthe Meterî) is a handheld instrument
designed primarily to make resistance/ insulation

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 test lead to one alligator
clip (Black colour)
One plug test lead to one alligator
clip (Green colour)
Two plugs test lead to one
alligator clip (Red colour)

1.5V Battery (LR14)
Tool Box
USB Interface Cable
Software
Power adaptor (input voltage
230V, 50/60Hz, 75mA, output
DC14V , 1.0A)(optionally , available
at extra cost)

Qty

1 piece
1 piece

1 piece

1 piece

8 pieces
1 piece
1 piece
1 piece
1 piece

In the event you find any missing or damage, please
contact your dealer immediately.

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Model UT513: OPERATING MANUAL

Safety Information

This Meter complies with the standards IEC61010 safety
measurement requirement: in pollution degree 2,
overvoltage category (CAT. III 600V) and double
insulation.

CAT II: Local level, appliance, PORTABLE EQUIPMENT
etc., with smaller transient voltage overvoltages than
CAT. III

Use the Meter only as specified in this operating manual,
otherwise the protection provided by the Meter may be
impaired.

Danger identifies conditions and actions that pose
hazard(s) to the user.

Warning identifies avoiding electric shock.
Caution identifies conditions and actions that may

damage the Meter and carrying out accurate
measurement.

Danger

Use of instrument in a manual not specifed by the
manufactuer may impair safety features/protection
provided by the equipment. Read the following
safety information carefully before using or
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.
When using the test leads, keep your figures
away from the lead contacts. Keep your
figures behind the finger guards on the leads.
Do not use the Meter with any parts or cover
removed.

International electrical symbols used on the Meter and
in this Operating Manual are explained on page 8.

Operating Caution identifies conditions that user
needs to take extra care during operating the Meter

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Model UT513: OPERATING MANUAL

Warning

Do not use the Meter if it is damaged or metal
part is exposed. Look for cracks or missing
plastic.
Be careful when working above 33V rms, 46.7V
ac rms or 70V DC. 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 Meterís input terminals.
Make sure the Meter is turned off when
opening the battery compartment.

Caution

When performing resistance tests, remove all
power from the circuit to be measured and
discharge all the power.

When servicing the Meter, use only the same
model number or identical electrical
specifications of test leads and power adaptor.
Do not use the Meter if the battery indicator
( ) shows a battery empty condition. Take
the battery out from the Meter if it is not 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.
Soft cloth and mild detergent should be used
to clean the surface of the Meter when
servicing. No abrasive and solvent should be
used to prevent the surface of the Meter from
corrosion, damage and accident.
Dry the Meter before storing if it is wet.

When carrying out insulation measurement,
do not contact the circuit under test.

Risk of electric shock
Equipment protected by double or
reinforced insulation.
DC Measurement
AC Measurement
Grounding
See Manual
Empty of Built-In Battery
Conforms to Standards of European Union

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Model UT513: OPERATING MANUAL

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)

The Meter enters the Sleep Mode and blanks the display
if there is no button press for 15 minutes. This is done
to conserve battery power. The Meter comes out of
Sleep Mode when ON/OFF button is pressed and hold
for 1 second.

Battery Indication

There is a battery indicator shows on the display upper
left hand corner. Below Table 3 is the explanation:

Battery Voltage

10V or less. It means the battery is
empty, donít use the Meter as it cannot
guarantee accuracy.
10V~10.5V. It means the battery is
nearly empty, replacing battery is
necessary. At this status, the Meter can
still do 500V and 1000V output
measurement, accuracy will not be
affected.

10.6V~11.5V

11.6V or more

Table 3. Battery Indication

Battery
Indicator

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Model UT513: OPERATING MANUAL

The Meter Structure

Below Figure 1 and Table 4 shows the Meter front
structure and description

Figure 1. The Meter Front Structure

Green Black

Red

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Model UT513: OPERATING MANUAL

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

Table 4. Meter Front Description

LCD

Scroll Button
Emergency Stop
Data Clear the Display Backlight Button

Down Button
On/Off Button
Compare Button
Insulation Resistance Button
DC Voltages measurement Button
Timer Button.
AC Voltages measurement Button
Test Button
USB Button
Data Store Button.
Data Recall Button

Scroll Button

17
18

19

20

21

22

Up Button
LINE: High Voltage output input terminal
(two plugs red test lead to one alligator clip)
High voltage line shielding input terminal
(two plugs red test lead to one alligator clip)
GUARD: Grounding protection input terminal
(one plug black test lead to one alligator clip)
EARTH: High resistance measurement input
terminal (one plug green test lead to one
alligator clip)
Testing leads:
Two plugs red test lead to one alligator clip.
One plug black test lead to one alligator clip.
One plug green test lead to one alligator
clip.

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Model UT513: OPERATING MANUAL

Below Figure 2 and Table 5 shows the Meter side
structure and description

Figure 2. The Meter Side Structure

Table 5. Meter Side Description

1 Safety Shutter
2 Power adaptor Input Terminal
3 USB Port

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Model UT513: OPERATING MANUAL

Display

Table 6 and Figure 3 describe the display.

Figure 3. Display

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Model UT513: OPERATING MANUAL

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

Number

12
13
14
15
16
17
18
19
20
21

Meaning

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

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Model UT513: OPERATING MANUAL

Table 7. Key Description

Turn on or off the Meter. Press and
hold the button for 1 second to turn the
Meter on. Press again to turn off the
Meter.
The Meter default range is 500V
insulation resistance continuous
measurement when turning on.
Emergency stop button. Press this
button when the Meter is hang and
cannot turn off the power.
Press to turn on or off the display
backlight
Press and hold to clear the stored data
Press to store the current measurement
value. The maximum number of stored
reading is 18. When the stored readings
memory is full, the Meter shows FULL
and stop storing. Press and hold
CLEAR / to clear the stored value
in order to store the next measurement

value.

LOAD

Key Functions

ON/OFF

E-STOP

CLEAR /

SAVE

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 one voltage
range up.
Under load mode: press to recall the
previous stored value.
When the insulation resistance
measurement has no testing voltage
output, press to select one voltage
range down.
Under load mode: press to recall the
next stored value.

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Model UT513: OPERATING MANUAL

Table 7. Key Description

When set the timer duration for the
measurement of insulation resistance
or polarization index, press to
decrement the time. The maximum
length of time is 15 minutes and 30
seconds, the Meter will automatically
carry out measurement.
When compare feature measuring
insulation resistance, press to
decrement a resistance comparing
value.
After polarization index
measurement, press to display
polarization index, TIME 2 insulation
resistance value and TIME 1
insulation resistance value in
sequence.
When set the timer duration for the
measurement of insulation resistance
or polarization index, press to

increment the time. The maximum
length of time is 30 minutes and 30
seconds, the Meter will automatically
carry out measurement.
When use the compare feature
measuring insulation resistance,
press to increment a resistance
comparing value.
After polarization index
measurement, press to display
polarization index, TIME 2 insulation
resistance value and TIME 1
insulation resistance value in
sequence.
Press once to start the data
transferring to the computer via USB,
USB symbol shows on the display.
Press again to stop the data
transferring to the computer via USB,

USB symbol disappears.

USB

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Model UT513: OPERATING MANUAL

Table 7. Key Description

Set a pass / fail limit for insulation tests.
The default value is 10M
Pres to step through continuous
measurement, timed measurement and
polarization index measurement in
sequence.
Press to stop or start an insulation
resistance test
Press to initiate insulation resistance
measurement
Press to initiate DC voltage
measurement
Pres to initiate AC voltage
measurement

COMP

TIME

TEST

IR

DCV

ACV

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Model UT513: OPERATING MANUAL

Measurement Operation

A. Measuring Voltages

Figure 4. Voltages Measurement

Below section explains how to make measurements.
Press and hold ON/OFF to turn on the Meter, press

again to turn off the Meter. The Meter default range is
500V insulation resistance continuous measurement
when turning on.

Red

Green

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Model UT513: OPERATING MANUAL

To avoid harms to you or damages to the Meter,
please do not attempt to measure voltages
higher than 600V or 600V rms, although
readings may be obtained.
Special care should be taken when measuring
high voltage.

Operating Catuion

To measure voltages, set up the Meter as Figure 4 and
do the following:

Press DCV or ACV button to select DC voltage or
AC voltage measurement
Insert the red and green test lead into the tested
circuit.
When measuring DC voltage, if the red test lead is
negative voltage, ì-ì symbol will show on the display.

1.

2.

3.

When voltage measurement has been completed,
disconnect the connection between the testing
leads and the circuit under test and remove testing
leads away from the input terminals of the Meter.

Note

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Model UT513: OPERATING MANUAL

Black

Red

B. Measuring Insulation Resistance

Figure 5. Insulation Resistance Measurement

Operating Caution
When performing insulation resistance tests,

remove all power from the circuit to be
measured and discharge all the power.
Operating the Meter must be very careful as it
outputs dangerous voltage during
measurement. Must make sure the tested object
is firmed clipped, hands are away from the
clips, then press TEST button to put high
voltage.
Do not short circuit the testing leads during
high voltages output or test insulation
resistance after high voltages output. This kind
of incorrect operating may cause sparking and
fire, which damages the Meter and harms to
you.
Do not measure over 10 seconds when:
500V measure resistance lower than 2M
1000V measure resistance lower than 5M
2500V measure resistance lower than 10M
5000V measure resistance lower than 20M

Green

Groud

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Model UT513: OPERATING MANUAL

To measure insulation resistance, set up the Meter as
Figure 5 and do the following:

Press IR button to select insulation resistance
measurement.
When there is no testing voltage output, press
and button to select voltages of 500V, 1000V,
2500V or 5000V.
When performing insulation resistance tests, remove
all power from the circuit to be measured and
discharged all the power.
Insert the red test lead into the LINE input terminal
and the black test lead into GUARD input terminal.
Connect the red and black alligator clip to the circuit
to be measured, negative voltage output from LINE
terminal.
Choose below insulation resistance measurement
mode.

1.

2.

3.

4.

5.

6.

Press TIME button to select continuous
measurement mode, there is no timer icon on the
LCD.
Press and hold TEST button for 1 second to
carry out continuous measurement. Output
insulation resistance testing voltage, TEST button
light up, blinks on every 0.5 seconds.
Press TEST button to close the insulation resistance
measurement voltage when measurement is
completed. TEST button lights off, disappears.
The LCD shows the current insulation resistance
measurement value.

Press TIME button to select timed measurement
mode, the LCD displays TIME 1 and symbols.
Press and buttons to set the time (00:10~15:00).
Within 1 minute, the time increment or decrement
by every 5 seconds. Afterward, the time increment
or decrement by every 30 seconds.

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Model UT513: OPERATING MANUAL

Then press and hold TEST button for 2 second to
carry out timed measurement. TIME 1 and are
displayed and blinked on the LCD on every 0.5
seconds.
When the set time is reached, the insulation
resistance measurement voltage will be closed
and the measurement will be automatically stopped.
The LCD displays the insulation resistance reading.

Press TIME button to select timed measurement
mode, the LCD displays TIME 1 and symbols.
Press and buttons to set the time (00:10~15:00).
Within 1 minute, the time increment or decrement
by every 5 seconds. Afterward, the time increment
or decrement by every 30 seconds.
Press TIME button again. TIME 2, PI and symbols
appear on the LCD.
Press and buttons to set the time (00:15~15:30).
Within 1 minute, the time increment or decrement
by every 10 seconds. Afterward, the time increment

or decrement by every 30 seconds.
Then press and hold TEST button for 2 seconds to
carry out timed measurement.
TIME 1 and are displayed and blinked on the
LCD on every 0.5 seconds before TIME 1 set time
is reached.
TIME 2 and are displayed and blinked on the
LCD on every 0.5 seconds before TIME 2 set time
is reached.
When the two set time are reached, the insulation
resistance measurement voltage will be closed and
the measurement will be automatically stopped.
The LCD displays the polarization index reading.
Press , to set through the polarization index,
TIME 2 insulation resistance reading and TIME 2
insulation resistance reading.

Information:
PI = 3 minutes ~10 minutes reading / 30 seconds ~1
minute reading

PI
Standard

4 or more
The best

4~2
Good

2.0~1.0
Warning

1.0 or less
Bad

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Model UT513: OPERATING MANUAL

Press COMP button to select compare feature.
COMP symbol displays on the LCD..

Press and buttons to set the compare value
Below is the list in sequence of the compare value:
10M , 20M , 30M , 40M , 50M , 60M , 70M ,
80M , 90M ,100M , 200M , 300M , 400M ,
500M , 600M , 700M , 800M , 900M ,1G ,
2G , 3G , 4G , 5G , 6G , 7G , 8G , 9G ,
10G ,20G , 330G , 40G , 50G , 60G , 70G ,
80G , 90G , 100G ,200G , 300G , 400G ,
500G , 600G , 700G , 800G , 900G
Press and hold TEST button for 2 seconds to carry
out the measurement.
The NG symbol will display if the insulation
resistance value is smaller than resistance value.
Otherwise GOOD symbol will be displayed.

The Use of Power Adaptor

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Model UT513: OPERATING MANUAL

The use of power adaptor, see figure 6

Open the side safey shutter, then you will see there
is a power adaptor input terminal.
Make sure the Meter is power off and insert the
UT513 power adaptor to the input terminal.
It is highly recommeded to take out all the batteries
when you are using the power adaptor.
Make sure the Meter is power off when you
disconnect the UT513 power adaptor from the Meter.
It is highly recommeded to use Uni-Trend supplied
UT513 power adaptor to avoid dangerous.

1.

2.

3.

4.

5.

Figure 6. The Use of Power Adaptor

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Model UT513: OPERATING MANUAL

USB Interface

Connecting the USB interface, see figure 7

Figure 7. USB Interface Connection

Install the included software, the installation guide
can be seen from the CD.
Open the side safety shutter, then you will see there
is a USB port.
Insert the included USB cable to the Meterís USB
port and the other end to the computer.

1.

2.

3.

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Model UT513: OPERATING MANUAL

Maintenance

This section provides basic maintenance information
including battery replacement instruction.

Warning

Do not attempt to repair or service your Meter unless
you are qualified to do so and have the relevant
calibration, performance test, and service
information.

A. General Service

Periodically wipe the case with a damp cloth and
mild detergent. Do not use abrasives or solvents.
T o clean the terminals with cotton bar with detergent,
as dirt or moisture in the terminals can affect
readings.
Turn the Meter to OFF when it is not in use.
Take out the battery when it is not using for a long
time.
Do not use or store the Meter in a place of humidity,
high temperature, explosive, inflammable and strong
magnetic field.

If the Meter is wet, dry it before use.

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Model UT513: OPERATING MANUAL

B. Replacing the Battery

Warning

To avoid electric shock, remove all the test leads
from the Meter when replacing the batteries.

Operating Caution

Donít mix to use old and new batteries.
Be careful the polarity is correct when installing
batteries.
Do not use the Meter if the battery indicator
( ) shows a battery empty condition.
Do you carry out measuring during the battery
compartment is open.

Figure 8. Battery Replacement

Follow Figure 8 and proceed as follows to replace the
battery:

Turn the Meter to OFF and remove all connections
from the terminals.
Remove the screw from the battery compartment,
and separate the battery compartment from the case
bottom.
Replace with 8pcs of new 1.5V (LR14) batteries.
Rejoin the case bottom and battery compartment,
and reinstall the screw.

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Model UT513: OPERATING MANUAL

Specifications
Safety and Compliances

Certification
Compliances

IEC 61010 CAT.III 600V overvoltage and double insulation standard

Physical Specifications

Display (LCD)

Operating Temperature
Storage Temperature
Relative Humidity

Battery Type

Dimensions (HxW xL)
Weight

Digital: 9999 counts
Analog bar graph.

-10 ~40 (14 ~104 )

-20 ~60 (-4 ~152 )
85% @ -10 ~40 below;
90% @ -20 ~60 :

8pcs of 1.5V (LR14) batteries or power adaptor (input voltage 230V , 50/60Hz,
75mA, input DC14V, 1.0A).
Power adaptor is optionally at extra cost.
202 x 155 x 94 mm
Approx. 2kg (including battery)

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Model UT513: OPERATING MANUAL

General Specifications

Range
Overloading
Battery Indicator
Icon Display
Current Consumption

Auto
Display OL on insulation resistance range
Display
Equips with function and battery indicator icons.
Maximum: around 1.0A
Average: around 20mA

Feature Summary

Display Backlight
Computer connection
Data Logging and Recall
Autorange
Warning
Voltage
COMP Measurement

PI Measurement

TIME

Bright backlight for clear readings in poorly lighted areas.
Via USB interface.
18
The Meter automatically selects best range

and red light will on.
Auto release voltage
Use the Compare function to set a pass/fail compare level for the insulation
measurements.
Polarization Index is the ratio of insulation resistance. You can pre-set two
point of times and automatically carry out the measurement.
To carry out measurement by setting a specified time within 15 minutes.

Measurement Range
Resolution
Accuracy

DC Voltage

30 ~ 600V

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Model UT513: OPERATING MANUAL

Detailed Accuracy Specifications

Accuracy: ([% of reading] + [number of least significant digits), guarantee for 1 year.
Operating temperature: 18 ~28
Relative humidity: 45~75%RH

A. Voltage Measurement

AC Voltage
30V~600V (50/60Hz)

1V

(2%+5) Among them 30~100V(50/60Hz) (2%+8)

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Model UT513: OPERATING MANUAL

Output Voltage
Display Range
Open Circuit Voltage
Test Current

Accuracy

B. Insulation Resistance Measurement

500V

0.5M ~20G
DC 500V 0%~+ 20%
1mA~1.2mA @ 500k

1000V
2M ~40G
DC1000V 0%~+ 20%
1mA~1.2mA @ 1M

2500V
5M ~100G
DC 2500V 0%~+ 20%
1mA~1.2mA @ 2.5M

5000V
10M ~1000G
DC5000V 0%~+ 20%
1mA~1.2mA @ 5M

10.0M ~29.9M : (For
reference only)

30.0M

~99.9M : (3%+5)

100M

~9.99G : (5%+5)

10.0G

~99.9G : (10%+5)

Above 100G

: [ (20%+5)

Humidity:Below 50%]

0.50M ~99.9M : (3%+5)
100M ~9.99G : (5%+5)

10.0G ~20.0G : (10%+5)

Short Circuit

At any output voltage, when the tested resistance is les than 10M , the testing time cannot exceed 10
seconds continuously.

Operating Caution

2.0M ~99.9M : (3%+5)
100M ~9.99G : (5%+5)

10.0G ~40.0G : (10%+5)

5.0M ~99.9M : (3%+5)
100M ~9.99G : (5%+5)

10.0G ~100G : (10%+5)

Less than 2.0mA

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Model UT513: OPERATING MANUAL

This operating manual is subject to change without notice.

*END*

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Model UT513: OPERATING MANUAL

Copyright 2007 Uni-Trend Group Limited.

All rights reserved.
Manufacturer:

Uni-Trend Technology (Dongguan) Limited
Dong Fang Da Dao
Bei Shan Dong Fang Industrial Development District
Hu Men Town, Dongguan City
Guang Dong Province
China
Postal Code: 523 925

Headquarters:
Uni-Trend Group Limited
Rm901, 9/F, Nanyang Plaza
57 Hung To Road
Kwun Tong
Kowloon, Hong Kong
Tel: [phone]
Fax: [phone]
Email: [e-mail]
http://www.uni-trend.com