Unit UT501 Manuale utente

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1

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1

UT501/UT502 OPERATING MANUAL

Table of Contents

Title Page

Introduction

Unpacking the Meter

Safety Information

International Electrical Symbols

The Meter Structure

Key Functions

Rotary Switch

Measurement Operation

A. Measuring Voltages

B. Measuring Insulation Resistance

4

4

6

11

12

14

15

16

16

18

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UT501/UT502 OPERATING MANUAL

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. UT501: Insulation Resistance Measurement

UT502: Insulation Resistance Measurement

21

21

23

25

25

26

27

27

28

28

29

30

3

UT501/UT502 OPERATING MANUAL

List of Tables

Table Title Page

1. Unpacking Inspection

2. International Electrical Symbols

3. Meter Front Description

4. Key Description

5. Rotary Switch Description

List of Figures

Figure Title Page

1. The Meter Front Structure

2. Voltages Measurement

3. Insulation Resistance Measurement

4. Battery Replacement

5

11

13

14

15

12

16

18

23

4

UT501/UT502 OPERATING MANUAL

Introduction

Uni-Trend Model UT501 and UT502 insulation resistance tester (hereafter, "the Meter")

is a handheld instrument designed primarily to make resistance/ insulation resistance,

DC/AC Voltage measurement.

Unpacking the Meter

The Meter includes the following items:

5

UT501/UT502 OPERATING MANUAL

Table 1. Unpacking Inspection

Description

English Operating Manual

Test Lead

Test probe

Alligator clip

Carry bag

Strap

1.5V Battery (LR14)

Item

1

2

3

4

5

6

5

Qty

1 piece

1 set

1 set

1 set

1 piece

1 piece

6 pieces

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

6

UT501/UT502 OPERATING MANUAL

Safety Information

This Meter complies with the standards IEC61010 -1 safety measurement requirement:

in pollution degree 2, overvoltage category (CAT. III 600V, CAT.II 1000V) and double

insulation.

CAT II: Local level, appliance, portable equipment etc., with smaller transient voltage

overvoltages than CAT. III

CAT III: Distribution level, fixed installation, with smaller transient over voltages than

CAT. IV

Use the Meter only as specified in this operating manual, otherwise the protection

provided by the Meter may be impaired.

7

UT501/UT502 OPERATING MANUAL

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.

International electrical symbols used on the Meter and in this Operating Manual are

explained on page 11.

8

UT501/UT502 OPERATING MANUAL

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 1000V DC or 750V AC.

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.

When carrying out insulation measurement, do not contact the circuit

under test.

9

UT501/UT502 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 30V rms, 46.7V ac rms and 70V DC. Such

voltages pose a shock hazard.

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.

Carefully read the operating manual before operating the Meter.

Follow the operating manual all the time when using the Meter and keep

the operating manual in a safe place.

Wrong operation will cause incident and damage to the Meter.

10

UT501/UT502 OPERATING MANUAL

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.