UNI-T UT513A Insulation Resistance Tester User Manual

UNI-T UT513A Insulation Resistance Tester

Introduction

Uni-Trend Model UT513A 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

It is recommended to select the specific 8pcs chargeable batteries (LR14) and a charger.
In the event you find any missing or damaged part, please contact your dealer immediately.

Safety Information

This Meter complies with EN 61010-1:2010IEC 6155
7-1, TEC 61557-2. safety measurement requirement:
Pollution Degree 2, measurement category CAT I 600V and Double Insulation.
CAT I (measurement category): Test and measuring circuits connected directly to utilization points (socket outlets and similar points) of the low- voltage MAINS installation.
CAT II (measurement category): Test and measuring circuits connected to the distribution part of the buildings low-voltage MAINS installation.
Use the Meter only as specified in this operating manual, otherwise the protection provided by the Meter may be impaired.
A Danger identifies conditions and actions that pose hazard(s) to the user.
Warning alerts the user to avoid electric shock.
Caution identifies conditions and actions that may damage the Meter and affect accurate measurement.
Operating Caution identifies conditions that user needs to take extra care during operating the Meter

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

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 ms 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 Meter’s 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 test leads and power adaptor with the same model or identical electrical specifications.
• 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.

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 after 15 minutes’ inactivity. 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 shown on the upper left corner of the display. Please refer to Table 3 for detailed explanation.When using battery test the. voltage maximum is 14.0V and minimum is 10.0V.

When charging battery is applied, the charging battery work mode should be selected at the startup: Press and hold USB button prior to startup, then press down ON OFF, LCD screen will display CHA or GEN, and select to display CHA by pressing the up/down key, after pressing USB key to confirm, the Meter successfully enters the charging battery work mode. GEN means the general alkaline battery work mode.

The Meter Structure

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

Table 4. Meter Front Description

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

Display

Table 6 and Figure 3 describe the display.

Key Functions

Measurement Operation

This 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 defaults at 500V range and under continuous measurement of insulation resistance when turned on.

Measuring Voltage

Operating Caution
To avoid harm to you or damage 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.
To measure voltage, set up the Meter as Figure 4 and do the following

1. Press DCV or ACV button to select DC voltage or AC voltage measurement
2. Insert the red and green test leads into EARTH and two LINE terminals.
3. When measuring DC voltage, if negative voltage is present on the red test lead, symbol will show on the display.

Note
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.

Measuring Insulation Resistance

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 output 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 cause personal injury.
• Do not measure over 10 seconds when:
  measuring resistance <2MO with use of 500V.
  measuring resistance <5M with use of 1000V.
  measuring resistance <10M0 with use of 2500V.
  measuring resistance<20MQ with use of 5000V.

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

1. Press IR button to select insulation resistance measurement.

2. When there is no testing voltage output, press and button to 500V, 1000V, 2500V or 5000V voltage range.

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

4. Insert the red test lead into two LINE terminals, the black one into GUARD and the green one into EARTH.

5. Connect the red and green alligator lip to the circuit to be measured, negative voltage outputs from LINE terminal.

6. Choose one of insulation resistance measurement modes shown as below:
   a) Continuous Measurement

   • Press TIME button to select continuous mode, there is no timer icon on the LCD.

   • Press and hold TEST button for 1 second to Dut begin and output insulation resistance carr test voltage TEST button light up, A blinks on every 0.5 seconds.

   • Press TEST button to turn off the voltage output, when measurement is completed. TEST button lights off, A disappears. The LCD shows the Current insulation resistance measurement value.
     b) Timed Measurement

   • Press TIME button to select timed 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 10 seconds. Afterward, the time increment or decrement by every 30 seconds.

   • Then press and hold TEST button for 2 second to carry out the measurement. TIME 1 and are displayed and blinked on the LCD on every 0.5 seconds.

   • When the set time is reached, the test voltage output will be turned off, and the measurement will be automatically stopped. The LCD displays the insulation resistance reading.
     c) Polarization Index (PI) Measurement

   • Press TIME button to select timed 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, Pl 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 test voltage output will be turned off and the measurement will be automatically stopped.

   • The LCD displays the polarization index reading.

   • Press , to step through the polarization index, TIME 2 and TIME 2 insulation resistance readings.

Calculation Tips:
Pl 3-minute ~ 10-minute resistance/30-second
1-minute resistance

d) Compare Function
Press COMP button to select oompare feature. COMP symbol displays on the LCD.
Press and buttons to set the compare value
You can choose compare from:
10M2, 20M2, 30M2, 40M2, 50MQ, 60M2, 70M2,
80M2, 90M2,100M2, 200M2, 300M2, 400MS2,
500MS2, 600M.2, 70OMS2, 800M2, 900MSQ,1G2,
2G2, 3GQ, 4G2, 5GO, 6GQ, 7G2, 8GQ, 9G2,
10G2,20GQ, 30G2, 40G2, 50G2, 60G2, 70G2,
80G2, 90G2, 100G2,200G2, 300G2, 400G2,
500G2, 600GQ, 700GQ, 800G2, 900GQ
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 compare value.
Otherwise GOOD symbol will be displayed.

Using Power Adaptor

See Figure 6 for the use of power adaptor.

Figure 6. Using Power Adaptor

1. Open the side safey shutter, then you will see there is a power adaptor input terminal.
2. Make sure the Meter is power off and insert the UT513A power adaptor to the input terminal.
3. It is highly recommeded to take out all the batterieswhen you are using the power adaptor.
4. Make sure the Meter is power off when you disconnect the UT513A power adaptor from the Meter.
5. It is highly recommeded to use Uni-Trend supplied UT513A power adaptor to avoid dangerous.

Connecting USB Interface

See Figure 7 for USB interface connection.

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

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.

General Service

• Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents.
• To 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.

Replacing the Battery

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

Operating Caution

• Don’t 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.

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.

Specifications

Safety and Compliances

General Specifications

Accuracy Specifications

Accuracy: t (% of reading] + [number of least significant digits), guarantee for 1 year.
Operating temperature: 18C~28C
Relative humidity: 4575%RH
Insulation measurement usage: At room temperature, the new alkaline battery of no.2 can provide more than.

Voltage Measurement

Insulation Resistance Measurement

Operating Caution
At any output voltage, when the tested resistance is less than 10M2, the testing time cannot exceed 100 seconds Continuously.

UN-T.
UNITREND TECHNOLOGY (CHINA) CO., LTD.
No6, Gong Ye Bei 1st Road,
Songshan Lake National High-Tech Industrial
Development Zone, Dongguan City
Guangdong Province, China
Tel (86-769) 8572 3888
http://www.un-trend.com

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