Unit UT512 Manuale utente
Model UT512
OPERATING MANUAL
Title Page
Model UT512: 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
30
Model UT512: 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
3
Model UT512: 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
4
Model UT512: 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
5
Model UT512: OPERATING MANUAL
Introduction
Uni-Trend Model UT512 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 / R14)
Tool Box
USB Interface Cable
Software
Power adaptor (input voltage
230V, 50/60Hz, 50mA, output
DC14.5V, 600mA) (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.
6
Model UT512: 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
7
Model UT512: 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
8
Model UT512: 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
5.9V ~ 10.6V. It means the battery is
empty, donít use the Meter as it cannot
guarantee accuracy.
10.7V ~ 11.1V. 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.
11.2V ~ 12.2V
12.2V or more
Table 3. Battery Indication
Battery
Indicator
9
Model UT512: 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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