Uni-T UT526 Bruksanvisning

Uni-T Multimeter UT526

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I. Overview

UT525/UT526 is a multifunction digital instrument adopting brand-new design

using large-scale integrated analogue and digital circuits and micro-processor chip.

It mainly measures RCD parameters, low-resistance continuity, insulation resistance,

DC&AC Voltage, etc. The versatile functionality, high accuracy and ease of use

features make it widely used to measure insulation and continuity of various kinds

of electrical equipments, and an ideal tool for maintenance, inspection and tests

badly needed for RCD in those equipments.

II. Safety Information

This instrument was designed, manufactured and tested according to

IEC61010 safety standard (Safety Requirements for Electrical Equipment).

The manual includes safety information related to the safe operation of the instr

-ument. Please read the following instructions before use and strictly follow them

during the operation.

Warning

● Please read and understood the manual before using the instrument.

● Use the instrument as specified in the manual and keep the manual

well for future reference.

● Misuse may cause personal injury or damage to the instrument during

tests.

Sign on the instrument indicates users to refer to the manual for details in

order to ensure safe operation of the instrument.

Specifies conditions and actions that may pose severe or

fatal hazards to the user.

Warning

Alerts users to avoid electric shock.

Specifies conditions and actions that damages the

instrument or affect the measurement accuracy.

Caution

Danger

Warning

Caution

III. Electrical Symbols

Risk of electric shock

Double or reinforced insulation

Grounding

IV. Speciﬁcations

Accuracy: ±(a% of reading+ b digits), calibration per year

Ambient Temperature & Humidity: 23±5 , 45~75%RH.℃

RCD Test

Test current 10mA 30mA 100mA 300mA

Applied voltage

Voltage: 220V±10%, frequency: 45Hz-65Hz

Test current accuracy

At 220Vac ± 2: 0 +10%

Trip time

Accuracy ±(5%+2)

(10mA) range: 0-2,000mS

(30mA) range: 0-500mS

(100mA) range: 0-300mS

(300mA) range: 0-300mS

0.01Ω 200Ω:±(2%+5)～

201Ω 2000Ω:±(5%+5)～

Insulation Resistance(UT525)

Rated voltage 100V 250V 500V

Test range 0.05MΩ-200MΩ

Open circuit voltage DC 100V±10% DC 250V±10% DC 500V±10%

Rated test current 100KΩ load 250KΩ load 500KΩ load

Short-circuit current 1.8mA＜

Accuracy 0.05MΩ-200MΩ: ±(5%+5)

0.9mA-1.1mA

Rated voltage 250V 500V 1,000V

Test range 0.05MΩ-200MΩ 0.05MΩ-300MΩ 0.05MΩ-500MΩ

Open circuit voltage DC 250V±10% DC 500V±10% DC 1,000V±10%

Rated test current 500KΩ load 1MΩ load 250KΩ load

Short-circuit current 1.8mA＜

Accuracy 0.05MΩ-500MΩ: ±(5%+5)

0.9mA-1.1mA 0.9mA-1.1mA

0.9mA-1.1mA

Voltage

DCV ACV

Test range ±0-±440V 0-440V (50/60Hz), for 10V, it is for ＜

reference only.

Resolution 1V

Accuracy

±(2%+3)

Frequency

Test range 20Hz-100Hz

Resolution 1Hz

Accuracy Just for reference

● Display: LCD display, max reading: 9999

● Low battery indication:

● Over limit indication: “ ”OL

● Auto range function

● Unit display: Display function and unit symbols simultaneously.

● Work conditions: 0 -40℃ ℃/ ≤85%RH

● Storage condition: -20 -60℃ ℃/≤90%RH

● Dimensions: 150mm(L)×100mm(W)×71mm(D)

● Current consumption: about 50mA (1,000V output) (about 10mA in general

condition)

● Accessories: test lead, alkaline battery (1.5V, AA)×6, manual,

carrying bag

● Weight: 0.7kg (including batteries)

● Power: alkaline battery (1.5V, AA)×6

V. Tester Description (Front View, See Figure 1)

1. : Live terminal for RCD measurement and positive terminal for voltage L

measurement

2. : earth terminal for RCD measurementE

3. : Neutral terminal for RCD measurement and input negative terminal for N

voltage tmeasurement

4. : High voltage output terminal for insulation resistance measurementLINE

5. LCD

6. RCD current setup/voltage switchover button

7. RCD phase angle switchover/zeroing button

8. Test button

Figure 1

VI. Buttons and Rotary Switch Functions

1. I/VOLT: Select RCD test currents/switch between AC and DC voltage;

2. ANG/ZERO: Switch phase angle for RCD measurements/ reset to zero before

continuity test;

3. TEST: Begin a test;

4. Set rotary switch to Continuity: Test for grounding continuity;

5. Set rotary switch to RCD/V: Measure RCD/AC&DC voltage;

6. Set rotary switch to 100V/250V/500V (UT525) or 250V/500V/1000V (UT526):

select a output voltage under insulation resistance measurement.

VII. Preparations before Measurement

When the instrument turns on, if low battery indicator shows on left side of LCD,

it indicates the battery is running out and please replace the battery timely.

Low Battery Indicator

Battery Voltage

7V or less

VIII. Testing for Continuity(See Figure 2)

Multifunction Electric Testers

● Do not measure any circuit with voltage above 440Vac or 440Vdc.

● Do not take measurements on sites exposed to flammables, for spark may

cause the explosion.

● Do not use the Tester if it is wet or the operator’s hands are wet.

● Do not touch conductive parts of test leads during measurement.

● Do not use the instrument if it works abnormally. Eg: the instrument is damaged

or the metal is exposed.

● Please take caution when working voltage exceeds 33Vrms, 46.7Vacrms or

70Vdc, for it may cause electric shock.

● The electric storage in tested circuits must be released after finishing high

resistance measurements.

● Do not replace the battery if the instrument is under wet conditions.

● Please ensure the test leads are firmly secured to input terminals of the

instrument.

● Ensure the instrument is turned off before opening the battery cover.

● The tested circuit should be discharged completely and totally separated from

the power before making resistance measurements.

● If it is necessary to replace the test leads or power adaptor, please use only

the same model with identical electric specifications.

● If low battery indicator( ) shows, stop using the instrument. Take

out the battery if not used for a long time.

● Do not store or use the instrument in the places exposed to high temperature,

high humidity, explosives, flammables or strong electromagnetic field.

● Clean the instrument casing with dampened cloth and mild detergent. No

abrasives or solvents are allowed.

● When the instrument is wet, dry it first before storing it.

Low-Resistance Continuity(UT525)

Low-Resistance Continuity(UT526)

Insulation Resistance(UT526)

● Auto voltage release

● Red warning light

● Compliances: CATIII 600V, Pollution Degree II as per IEC61010

● Do not measure with the battery cover opened.

● Do not touch any circuit under test when you are measuring insulation or RCD.

9. Rotary switch

To test continuity:

1. Connect the tested object and the Tester as shown in Figure 2;

2. Set the rotary switch to Continuity;

3. Press TEST button to begin the test;

Caution:

● To ensure the test accuracy, please short-circuit the test leads and zero the

display(Zeroing Steps: set the tester under continuity status, short-circuit the

test leads, press TEST button and then press ANG/ZERO button to reset the

resistance of test leads to “0”, ZERO shows on LCD.)

● Do not test any live objects.

Figure 2

IX. Measuring RCD(See Figure 3)

Caution:

Figure 3

X Measuring Voltage (See Figure 4)

Figure 4

XI. Measuring Insulation Resistance (See Figure 5)

Caution

Figure 5

XII. Replacing the Battery(See Figure 6)

Caution

●

Do not use old and new batteries at the same time.

●

Pay attention to the polarity during replacing battery.

Danger

1. To avoid potential electric shock, remove the test leads away from the

instrument before replacing battery.

2. Do not measure with the battery opened.

3. When sign “ ” is displayed on LCD, it means the battery needs to be

replaced.

Figure 6

XIII. Maintenance

Cleaning the Housing:

●

Wipe the surface with soft wet cloth or sponge.

●

To avoid instrument damage, do not dip the instrument into water.

●

When the instrument is wet, make it dry and then store.

●

When the instrument needs to be checked or repaired, please have it serviced

by qualified professional personnel or designated service center.

The content is subject to change without prior notice.

**END**

To measure RCD,

1. Set the rotary switch to RCD/V;

2. Press I/VOLT button to set up test current (available: 10mA/30mA/100mA/

300mA);

3. Insert supplied test leads (with power plug) to the Tester (Red-L; Green-E;

Blue-N) and plug the plug into 220V civil socket;

4. Press TEST button to start.

● Ensure the power socket is reliably grounded when measuring RCD.

● Ensure the power socket Live, Neutral and Earth lines are properly connected

when measuring RCD.

● Please take caution when taking RCD measurements, for they are all done

under high voltage status.

To measure voltage:

1. Set the rotary switch to RCD/V;

2. Long press I/VOLT to switch between AC and DC mode;

3. a. Insert test leads into input terminals (Red to L, Black to N) and connect Red

& Black clips or probes to tested circuit.

b. Or Insert the special test leads (with plug) to the input terminals (Red to L,

Green to E, Blue-N) and plug the plug into the tested socket.

4. Press TEST button, the Tester will automatically detect out AC/DC mode and

display the voltage and frequency readings on LCD.

● Do not input any voltage higher than 440V or 440Vrms, although it may be

possible to display a higher voltage, it may damage the instrument.

● To avoid electric shock, please take caution when measuring high voltage.

● After completing the measurements, remove test leads away from tested

circuits and disconnect them from the input terminals of the instrument.

● Do not measure with the battery cover opened.

● Make sure the tested circuit is dis-energized, completely discharged and totally

separated from the power supply before measurement. Do not measure the

insulation resistance of live equipments or lines.

● Do not measure with the battery cover opened.

● Do not short-circuit the test leads under high-voltage output status or prepare

to measure insulation resistance after the high voltage has already been output.

● After the measurement finishes, do not touch the tested circuit, for the stored

capacitance in the circuit may cause electric shock.

● Do not touch the test leads even after they are removed away from the circuit,

wait until the test voltage is totally released.

To measure insulation resistance:

1. Turn the rotary switch to one of 100V/250V/500V (UT525) or 250V/500V/

1000V (UT526) test voltage.

2. Insert test leads into input terminals (Red to LINE, Black to N) and connect

them to the tested circuit. High voltage is output from LINE terminal.

3. Continuous Measurement: Press TEST button, the Tester will self-lock, output

the test voltage and emit warning light simultaneously. With the measurement

finished, press TEST to unlock and stop the continuous measurement.

To replace the battery, follow the steps as below:

1. Turn off the instrument (turn the rotary switch to off), and remove away the test

leads.

2. Unscrew the battery cover, take out the old batteries and replace with new 6 pcs

batteries.

3. Screw up the battery cover again.

P/N:110401104486X DATE:2018.06.26 REV.5

Produktspecifikationer

Varumärke:	Uni-T
Kategori:	Multimeter
Modell:	UT526
Produkttyp:	Digital multimeter
Produktstorlek (BxDxH):	160 x 71 x 100 mm
Batterispänning:	1.5 V
Batterier medföljer:	Ja
Displaytyp:	LCD
Indikator för låg batterinivå:	Ja