当前位置：文档库 › UT511 user manual

UT511 user manual

Model UT511 OPERATING MANUAL

TITLE PAGE

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

C. Low Resistance Measurement 555788910121515161718181920

21222222242424252526262627

TITLE PAGE

The Use of Power Adaptor 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

C. Low Resistance Measurement

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 7 8 9 10 11 12

Figure Title Page

1. The Meter Front Structure

2. The Meter Side Structure

3. The Display

4. Voltage Measurement

5. Insulation Resistance Measurement

6. Low Resistance Measurement

7. The Use of Power Adaptor

8. Battery Replacement 9 10 10 15 16 20 21 23

Introduction

Uni-Trend Model UT511 insulation resistance tester (hereafter, “the Meter”) 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

6Description

English Operating Manual

One plug test lead to one alligator

Two plugs test lead to one

alligator

1.5V Battery (R14 or LR14)

Tool Box

Power adaptor (optionally,

available at extra cost)

Qty

1 piece

2 pieces

1 piece

8 pieces

1 piece

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

This Meter complies with the standards IEC61010 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 overvoltages than CAT. IV

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.

International electrical symbols used on the Meter and Array

in this Operating Manual are explained on page 4~5.

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 two times. 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 shows on the display upper left hand corner. Below Table 3 is the explanation:

Table 3. Battery Indication

The Meter Structure

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

Figure 1. The Meter Front Structure

Table 4. Meter Front Description

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

Figure 2. The Meter Side Structure (Side View)

Table 5. Meter Side Description

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

11Meaning

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

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

Key Functions

Table 7. Key Description

Press to initiate low resistance measurement

Pres to initiate voltages measurement

Lo DVC /ACV

Emergency stop button. Press this

button when the Meter is hang and cannot turn off the power.

E-STOP

Measurement Operation

Below section explains how to make measurements.

A. Measuring Voltages Figure 4. Voltages Measurement l Special care should be taken when measuring high voltage.

Caution

Warning

l To avoid harms to you or damages to the Meter, please do not attempt to measure voltages higher than 1000V DC or 750V AC, although readings may be obtained.

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 test lead into the V terminal and the black test lead into the COM terminal.

Connect the red and black alligator clip to the circuit to be measured.

During measurement, when the red test lead is

negative voltage, then “-“ shows on the display. 1.

Black

Red

l 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

B. Measuring Insulation Resistance

Figure 5. Insulation Resistance Measurement

Red

Black

l l l l l l 17

When performing insulation resistance tests,

remove all power from the circuit to be measured and discharge all the power.

Do not short circuit two test leads under high

voltage status.

Do not measure insulation resistance after high

voltage output.

Do not measure over 10 seconds when:

100V measure resistance lower than 500k 250V measure resistance lower than 1M 500V measure resistance lower than 2M 1000V measure resistance lower than 5M When the measurement is completed, don’t

touch the circuit as the circuit has already stored capacitance which may cause electric shock.Don’t touch the test leads even after it has been

removed from the circuit until voltages are all released.

Caution

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

1.2.3.4.5.Press HO button to select insulation resistance measurement.

Press and button to select voltages of 100V,250V, 500V or 1000V.

Insert the red test lead into the LINE terminal and the black test lead into EARTH terminal.

Connect the red and black alligator clip to the circuit to be measured, positive voltage output from LINE terminal.

Choose below insulation resistance measurement mode.l l 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,

Press TEST button to close the insulation resistance

measurement voltage when measurement is

completed. TEST

The LCD shows the current insulation resistance

measurement value.

Press TIME button to select timed measurement

mode, the LCD displays TIME 1

Press , and STEP buttons to set the time

(00:05~29:30).

Then press and hold TEST button for 1 second to

carry out timed measurement. TIME 1

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

Press , and STEP buttons to set the time

(00:05~29:30).

Press TIME button again. TIME 2, PI

appear on the LCD.

Press , and STEP buttons to set the time

(00:10~30:00).

Then press and hold TEST button for 1 second to

carry out timed measurement.

TIME 1

LCD on every 0.5 seconds before TIME 1 set time

is reached.

TIME 2

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 2insulation resistance reading.

l Information:

PI = 3 minutes ~10 minutes reading / 30 second ~1minutes reading

PI Standard 4 or more The best 4~2Good

2.0~1.0Warning

1.0 or less Bad

Press COMP button to select compare feature.

COMP symbol displays on the LCD.

Press , and STEP buttons to set the compare

value. The minimum value is 1M The maximum value is the maximum tested voltage allowable measurement value.

Press and hold TEST button for 1 second 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.

l l l l