TRIPLETT MG500 Insulation Tester and Digital Multimeter User Manual

TRIPLETT MG500 Insulation Tester and Digital Multimeter

Product Information

Specifications

• Product Name: MG500 Insulation Tester and Digital Multimeter
• Compliance Standards:
  • EN61010-1:2010
  • EN61010-2-030:2010
  • EN61010-2-033:2012
  • EN61557-1:2007
  • EN61557-2:2007
  • EN61557-4:2007
  • EN61326-1:2013
  • EN61326-2-2:2013

Product Usage Instructions

Insulation Testing

1. Ensure the device is turned off before starting.
2. Connect the test leads to the insulation tester.
3. Select the appropriate voltage level for insulation testing.
4. Apply the test leads to the material being tested.
5. Read the insulation resistance value displayed on the screen.

Digital Multimeter Function

1. Turn on the device and select the desired function (voltage, current, resistance, etc.).
2. Connect the test leads to the corresponding ports on the multimeter.
3. Take measurements by touching the test probes to the circuit or the component being tested.
4. Read the measured values displayed on the screen.

FAQ (Frequently Asked Questions)

• Q: How do I calibrate the MG500 Insulation Tester and Digital Multimeter?
  A: Calibration instructions can be found in the user manual provided with the product. Follow the outlined steps for accurate calibration.

• Q: What is the maximum voltage level for insulation testing with this device?
  A: The MG500 Insulation Tester and Digital Multimeter supports insulation testing up to [specify maximum voltage level]. Ensure to select the appropriate voltage level based on your testing requirements.

Insulation Resistance to 200G

Features

• 50V, 100V, 250V, 500V, and 1000V Test Voltages
• Polarization Index ((PI)
• Dielectric Absorption Rate (DAR)
• Lock Power feature for hands-free operation
• Timed Test function (1 to 10 minutes in 1-minute increments)
• Live circuit voltage indicator
• Comparison (pass/fail) mode
• Leakage current measurement
• AC/DC Voltage, Resistance, Capacitance, Frequency, and Continuity measurement
• Store/Recall 99 measurement groups
• • Backlit 6000 count display with bargraph
• Data Hold freezes the reading on the display
• Auto Power off
• Low voltage indicator
• ETL Listed
• Includes test leads, test probes, alligator clips, (6) AA batteries, and carrying case

Safety Operation Criterion

The instrument is designed and produced in strict accordance with GB4793 Safety Requirements for Electronic Measuring Apparatus and IEC61010-1, EN 61010-2-030; EN 61010-2-033 safety standards, and complies with the safety standard for double insulation over-voltage CAT IV 600V and pollution level II. Please observe the following operation instructions, otherwise, the instrument provided protection is likely to be weakened or lost.

1. Before using, please check the instrument and probe to prevent any damage or abnormal phenomenon. If you find any abnormal situation, such as the probe is exposed, the shell is damaged, LCDs nothing or displays in a random way, please don’t use the instrument anymore. It is prohibited to use uncovered instruments. Otherwise, it is likely to cause the hazard of electric shock.
2. If the probe is damaged, it shall be necessary to replace it with the probe in the same model or the same electrical specifications.
3. When the instrument is measuring, do not touch the exposed wire, connector, or circuit without the input terminal used or in measuring.
4. When using the instrument to measure a DC voltage of higher than 42V or an AC voltage of higher than 30V, it is necessary to operate it carefully. Be sure to keep in mind that fingers are not allowed to exceed the position of finger protection, to prevent electric shock.
5. Do not apply voltage or current beyond the rated voltage or current marked on the instrument between terminals and between any terminal and grounding.
6. In measuring, the function switch shall be placed in the correct position. Before switching of function switch, it is necessary to cut off the connection between the probe and the measured circuit. It is prohibited to shift tap positions in measures to prevent damage to the instrument.
7. Before making online resistance and circuit on/off measuring, it is necessary to cut off all the power supplies in the circuit of the measured device and discharge all the capacitors.
8. Do not store or use the instrument in an environment with high temperature, high humidity, inflammable, explosive, or strong electromagnetic field.
9. Please do not change the internal wiring of the instrument at random, to prevent instrument damage and insecurity.
10. When the symbol of “ ” is displayed on the LCD, it is necessary to replace the battery timely, to ensure measuring accuracy; note: when battery capacity is lower than 7.2V, it will display the symbol of low voltage.
11. After measuring, it is necessary to cut off the power supply in time. It is advised to take out batteries if the instrument is not used for a long time.
12. Protection impairment if used in a manner not specified by the manufacturer.
13. Probe assemblies to be used for MAINS measurements shall be RATED as appropriate for CAT IV according to IEC 61010-031 and shall have a voltage RATING of at least the voltage of the circuit to be measured.

Electrical Symbols

External Structure

• LCD area: display of measuring data and functional symbols.
• Area of functional keys: selection of basic functions.
• Dial switch: selection of measuring function tap positions.

Area for measuring terminals:

1. CONTINUITY Jack’s positive end;
2. CONTlNUlTY jack negative end;
3. AC/DC voltage, resistance, capacitance measuring, and insulation resistance measuring input jack positive end;
4. AC/DC voltage, resistance, capacitance measuring, and insulation resistance measuring input jack negative end;

LCD

Functions of Keys

1. SAVE/CLEAR
   Click the key of “SAVE/CLEAR” once to save current measuring data (except for RECALL mode); in RECALL mode, hold the key of “SAVE/CLEAR” for about 3 seconds and wait for”-” displayed on the display and all the saved data will have been cleared. After clearing, press RECALL to exit.

2. RECALUENTER
   Press the key of “RECALUENTER” and it will enter RECALL mode and recall the first group of saved data (data have been saved in a certain way). Press the key once again to exit RECALL mode; in SET UP mode, press the key of “RECALUENTER” and it will confirm the currently set parameters.

3. HOLD/BACKLIGHT
   Click “HOLD/ ” and it will enter reading-hold measuring mode. Click once again and it will exit reading-hold measuring mode (it operates on AC/DC voltage, general resistance, and capacitance tap positions only}. Hold the key and it will turn on the backlight. When the backlight is turned on, it will always be on. If intending to turn off the backlight, it shall be necessary to hold the key.

4. COMP/ZERO
   In modes of CONTINUITY and insulation resistance, click the key of “COMP/ZERO” and the function of comparison will be activated. Then click the key and the function will be disabled. In SET UP mode, it is allowed to select different comparing values. In insulation resistance measuring function tap position, comparing values of 500 Kn, 1 Mn, 2Mn, 5MO, 1 OMO, 20Mn, 50Mn, 1 00Mn, 200Mn, and 500Mn are optional. In the CONTINUITY function tap position, comparing values of 10, 20, 50, 100, and 200 are optional. Press the key of ENTER/RECALL to confirm set parameters and hold the key of SETUP to exit. In the CONTINUITY short-circuit test, hold the key of “COMP/ZERO” and the zero function will be activated. Hold the key once again and the function will be disabled.

5. Pl/DAR/SET UP
   The function of “Pl/DAR/SET UP” is to start the testing instrument for testing on function of insulation polarization index or dielectric absorption ratio and set relevant parameters in functional tap positions of CONTINUITY and insulation resistance. When there is no test on insulation resistance tap position, click once and the screen will display Pl (polarization index) while setting the display time ratio to be 1 0min: 1 min; click for the second time and the screen will display DAR (dielectric absorption ratio) while setting time ratio to be the 60s: 15s; click for the third time and the screen will display DAR (dielectric absorption ratio) while setting time ratio to be 60s: 30s; click for the fourth time and testing function of Pl/DAR (insulation polarization index/dielectric absorption ratio) will be canceled. Testing can be done by selecting the one-time ratio required and pressing the testing key. When there is no test in tap positions of insulation resistance and CONTINUITY, hold the key, and relevant parameters will be set (press the key of ENTER/RECALL to confirm set parameters). Setting on parameters in function tap position of insulation resistance: 1 setting on step voltage: range of setting is 50%-120% of voltage in the function tap position; 2 setting on timing ranges from 1min to 10min; 3 setting on comparing values: 500Kn, 1MO, 2MO, 5MO, 10MO, 20MO, 50MO, 100MO, 200MO and 500MO are optional. Setting on parameters in functional tap position of CONTINUITY: 1 setting on measuring current: 20mA/200mA is optional; 2  setting on comparing values: 1 n, 20, 50, 1 on and 200 are optional; 3 on/off setting on buzzing function (when comparing function is disabled, the testing value shall not be higher 7 than 300 after the buzzing function is activated); in terms of “bu ON” or “bu OFF” displayed on LCD, switch to OFF through UP/DOWN switch and press the key of ENTER to disable the buzzing function. Switch to ON and press the key of ENTER to activate a buzzing function. Hold the key of SET UP to exit the setting.

6. TIMER/LOCK
   When there is no test on the insulation resistance tap position, click the key of “TIMER/LOCK” and the timer function will be activated. Then click the key and the function will be disabled. Set in SET UP mode. Timing time can be set to be 1-10min. Hold the key and the lock function will be disabled (the function is activated in booting. Hold the key and the lock function will be activated.

7. TEST
   When the dial switch is in the position of INSULATION and CONTINUITY, press the key of “TEST” and it will start testing on insulation and continuity. Then press the key and testing will be disabled (when lock function is activated).

8. UP
   Press the key of” ” and there will be the following functions:
   Function I: it is used for uplink setting parameters in SET UP mode;
   Function II: it is used for uplink retrieval when recalling the saved measured data.

9. DOWN/SELECT
   Press the key of “ /SELECT” and there will be the following functions:
   Function I: it is used for downlink setting parameters in SET UP mode;
   Function II: it is used for downlink retrieval when recalling the saved measured data;
   Function Ill: it is used for selecting resistance tap position or capacitance tap position in resistance/capacitance; Function IV: it is used for selecting voltage display or current display (in testing state) in insulation resistance tap position.

Measuring Operation Instructions

Measuring of AC Voltage (See Figure 4)

1. Insert the red probe into the “V” jack (red jack), and the black one into the “EARTH” jack (black jack).
2. Rotate the dial switch to the tap position and connect the probe to both ends of the power supply or load to be tested in parallel.
3. Read current measuring values of AC voltage and frequency directly from the display.
4. In measuring, if intending to save measured voltage, press the key of “SAVE/CLEAR” for saving.

Caution :

• Do not input voltage of higher than AC 600V.
• It is possible to measure higher voltage, but at the risk of meter damage. It is especially necessary to be cautious about electric shock when measuring high voltage. If necessary, please wear insulation gloves.
• After connecting all the measuring operations, please be sure to disconnect probe from the tested circuit.

Measuring of DC Voltage

1. Insert the red probe into the “V’ jack (red jack), and the black one into the “EARTH” jack (black jack).
2. Rotate the dial switch to the “ ” tap position and connect the probe to both ends of the power supply or load to be tested in parallel.
3. Read current measuring values of DC voltage from the display.
4. In measuring, if intending to save measured voltage, press the key of “SAVE/CLEAR” for saving.

Caution

• Do not input voltage higher than DC 600V. It is possible to measure higher voltage but at the risk of meter damage.
• It is especially necessary to be cautious about the electric shock when measuring high voltage. If necessary, please wear insulation gloves.
• After connecting all the measuring operations, please be sure to disconnect the probe from the tested circuit.

Measuring of CONTINUITY

1. Insert the red probe into the “CONTINUITY” jack (red jack), and the black one into the “COM” jack {black jack).
2. Rotate the dial switch to the “CONTINUITY” tap position and connect the probe to the circuit tested in parallel.
3. Press the key of “TEST’ and the measured value will be displayed on the display.
4. In measuring, if intending to save measured voltage, press the key of “SAVE/CLEAR” for saving.
5. To guarantee measure accuracy, it is necessary to reset the instrument probe before measuring, which is aimed at eliminating errors from the probe; specifically, short-circuit the alligator clips of two probes, press the key of “TEST’ and display the reading the resistance of lower than 2.000. Hold “COMP/ZERO” for 3s and the symbol of “ZERO” will be displayed on the top left corner of the display and the display reading will be “O.OOQ”, indicating zero success. In the test, if the fuse loses efficacy, the instrument display will display a warning character of “FU FAIL” and stop testing, which reminds users that the fuse has failed, and the fuse shall be replaced before reusing.
6. If intending to activate the buzzing function (when the testing value is not higher than 300, a buzzer will give out a long ring), please set in the SET UP function. When LCDs “bu ON” or “bu OFF”, switch to OFF with UP/ DOWN key and press ENTER to disable the buzzing function. Switch to ON and press ENTER to activate the buzzing function. When using the buzzing function, please be sure that the comparing function is disabled.

Caution:

• Before measuring, ensure that the Object to be tested is not electrified. Otherwise, it is likely to result in instrument damage or electric shock.
• Before testing, the instrument will make a judgment on whether the tested object is electrified with a voltage higher than about 2V. If the tested object is electrified with a voltage of higher than 2V, display will show the symbol Of “UE HI FAIL” and measuring will be inhibited.
• When resistance is beyond the maximum display range, the instrument display will show the symbol of 100″.

Measuring of Resistance/Capacitance

Measuring of Resistance (See Figure 7)

1. Insert the red probe into the “V” jack (red jack), and the black one into the “EARTH” jack (black jack).
2. Rotate the dial switch to the tap position and connect the probe to two ends of the tested resistance in parallel.
3. Read the current measuring value of resistance from the display.
4. In measuring, if intending to save measured resistance, press the key of “SAVE/CLEAR” for saving.

caution:

• When measuring online resistance, it is necessary to cut off the power supply before measuring.

Measuring of Capacitance (See Figure 8)

1. Insert the red probe into jack (red jack), and the black one into the “EARTH” jack (blackjack).
2. Rotate the dial switch to “ tap position and connect the probe to two ends of tested capacitance in parallel.
3. Press “T /SELECT’ to select the capacitance tap position.
4. Read the current measuring value of capacitance from the display.
5. In measuring, if intending to save measured capacitance, press the key of “SAVE/CLEAR” for saving.

caution:
Before measuring capacitance, it is necessary to discharge the capacitor.

Measuring of Insulation Resistance (See Figure 9)

1. Insert the red probe into the ”V” jack {red jack), and the black one into the “EARTH” jack {black jack).
2. Rotate dial switch to INSULATION {area of insulation resistance) and select the tested voltage required. Connect the probe to the tested circuit in parallel.
3. Press “TEST” on the instrument or ”TESr on the remote-control probe and read the current resistance on the main display area on display. In the auxiliary display area, the tested voltage or current (press “ ” to select) can be seen, while the display will flicker and show the warning symbol of high voltage “ .
4. Press the key of “TEST” and the LCD will flicker and show the warning symbol of high voltage “ ” in case of high-voltage output. In addition, a red warning indicator beside the warning symbol of the shell will be on.
5. In measuring, if intending to save measuring value, press the key of “SAVE” for saving.

caution:

• Before measuring, ensure that the object to be tested is not electrified. Otherwise, measuring is likely to be inaccurate.
• Before measuring, the instrument will make a judgment on whether the tested object is electrified with a voltage of higher than about 50V. If a tested object is electrified with a voltage of higher than 50V, the display will show the symbol of high voltage and measuring will be inhibited.
• When resistance is beyond the maximum display range, the instrument display will show the symbol of”>” and maximum resistance in the current range.

The Polarization Index or Insulation Absorption Ratio
(See Figure 9)
Similar to measuring insulation resistance, it is accessible only by setting the polarization index or dielectric absorption ratio; set testing instrument by the key of “Pl/DAR/SET UP” to test insulation polarization index or dielectric absorption ratio. When there is no test on insulation resistance tap position, click once and the screen will show Pl (polarization index) while setting display time ratio to be 1 Omin: 1 min; click for the second time and the screen will show DAR (dielectric absorption ratio) while setting time ratio to be the 60s: 15s; click for the third time and the screen will show DAR (dielectric absorption ratio) while setting time ratio to be 60s: 30s; click for the fourth time and testing function of Pl/DAR (insulation polarization index/dielectric absorption ratio) will be canceled. The test can be made by selecting the one-time ratio required and pressing the key.

Use of Comparing Function

In modes of CONTINUITY and insulation resistance, click the key of “COMP/ZERO” and the function of comparison will be activated. Then click the key and the function will be disabled. In SET UP mode, it is allowed to select different comparing values. For function tap positions for insulation resistance measuring, comparing values of 500 KO, 1 MO, 2MO, 5MO, 1 OMO, 20MO, 50MO, 1 OOMO, 200MO, and 500MO are optional. For CONTINUITY function tap positions, comparing values of 10, 20, 50, 100, and 200 are optional. Press the key of ENTER/RCALL to confirm the set parameters and hold the key of SETUP to exit. After the comparing mode is activated, comparing values and comparing results will be shown on the display. Comparing results are displayed as PASS or FAIL. If it is FAIL, there will be an alarm sound.

Use of Data Storage Function

1. Save measuring values: in measuring, press the key of “SAVE/CLEAR” to save current measuring values with 1 group added to saved articles on the display. A total of 99 groups are allowed to be added at most;
2. Recall measuring values: press the key of “RECALUENTER” to enter a mode of data recall and press “UP/ DOWN” to check data saved.
3. Clear measured data in memory: press the key of “RECALL” to enter the mode of data recall, hold the key of “SAVE/CLEAR” for 3s and wait for”-” to be displayed on the display, indicating that all the data saved have been cleared.

Power Supply Tap Position
When the knob switch is placed at the position of “OFF”, the power supply will be switched off.

Auto OFF Function
Where there is no operation to knob switch or keys within 10min, the LCD will be faded and the instrument will enter a micro-power consumption sleep state. If intending to wake up the instrument for operation, it shall be necessary to replace the knob switch to the position of “OFF” and at a certain measuring tap position. Then, the instrument will be wakened up.

Technical Indexes

General Specification

• Display: liquid crystal display with maximum display reading of up to 9999;
• Low-battery warning: see Table 1 ; Over-range indicator: mark of “>” appears on tap positions of insulation resistance and CONTINUITY;
• Function of automatic range;
• Unit display: the display of symbols for functions and power unit;
• Operating conditions: OOC400C/relative humidity of 85% or lower;
• Storing conditions: -200C-60eC/relative humidity of 90% or lower;
• Dimensions: mm (225L)MXM (103W)mm (590);
• Current consumption: about 500mA (IOI at maximum in output) (about 17mA in normal state); The instrument is designed and produced in strict accordance with IEC61010 safety standards, and complies with the safety standards for over-voltage (CAT IV 600V) and pollution level II;
• Function of automatic voltage release;
• • Backlight function is convenient for operation in dark light;
• Red warning indicator;
• Altitude: • Accessories: private wire, alligator clip, 6 1.5V (No.5) alkaline batteries, instructions, and a carrying bag;
• Weight: 0.7kg (with batteries).
• Compliance Standards: EN61010-1 :2010 ; EN61010-2-030:2010 ; EN61010-2-033:2012 ; EN61557-1 ; EN61557-2:2007 ; EN615574:2007 ; EN61326-1:2013 ; EN61326-2-2:2013

Electrical Specification

• Error limit: ± (a% reading + b word count), calibration period is a year;
• Ambient temperature: 23 oc ± 5 oc
• Ambient humidity: 45-75%RH;
• Temperature coefficient: O. 1 “(accuracy)/X,

Technical Indexes (See Table 2)

1. Measuring of AC voltage: ****When measured voltage frequency >450Hz, measuring values shall serve as reference only.
2. Measuring of Frequency (Auxiliary Display of AC Voltage Tap position):
3. Measuring of DC Voltage:
4. . Measuring of CONTINUITY: In an open circuit, the measured voltage is about 5V.
5. Measuring of Resistance:
6. Measuring of Capacitance:
7. Measuring Insulation Resistance:

• Operation range for EN61557: 0.10M0-1.00GQ (insulation output voltage; sov).
• Short-circuit current: <3mA
• The testing range for leaked current: is 10 µ A to 2mAo
• Testing accuracy for leaked current: 10%±3.
• The step voltage for insulation output voltage is set to be 50%-120% at the step of 10%.
• In measuring insulation resistance, when the step voltage selected is lower than the nominal voltage in the function tap position (50V/100V/250V/500V/1000V), the maximum testing range for insulation resistance will be 1/2 of the maximum testing range for the function tap position and accuracy will be added with ±2 word counts.

Maintenance and Repair

caution:
Before opening the face cover of the instrument, please be sure that the power supply has been switched off, and the probe has been away from the input terminal and tested circuit.

General Maintenance

• Use a clean-water wet cloth or sponge to scrub the surface.
• To prevent damage on the testing instrument, please do not immerse the instrument in water.
• When the instrument is moist, please dry it before storage.
• When it is necessary to check or repair the instrument, please hand over the instrument to a qualified professional maintenance staff member or specified maintenance department for repair.

Battery/Fuse Installation or Replacement (See Figure 10)
The power supply for this product is 6 1.5V (No.5) batteries. Please install or replace batteries according to the sequence listed in Figure 10.

1.  Turn the knob switch to the position of OFF (off) and remove the private wire.
2. Use the standard cross screwdriver to remove three screws on the battery cover, remove the battery cover, take out batteries, and install new batteries according to the polar indication.
3. Please use batteries in the same model. Do not install any inappropriate battery.
4. Please take out a damaged fuse in the way shown in Figure 10 and replace it with the fuse in the same specifications. Fuse specifications: 0.5A/1000V.
5. After installing new batteries, install the battery cover and screw three screws.

Warranty

Triplett/ Jewell Instruments extends the following warranty to the original purchaser of these goods for use. Triplett warrants to the original purchaser for use that the products sold by it will be free from defects in workmanship and material for a period of (2) two years from the date of purchase. This warranty does not apply to any of our products that have been repaired or altered by unauthorized persons in any way or purchased from unauthorized distributors so as, in our sole judgment, to injure their stability or reliability, or which have been subject to misuse, abuse, misapplication, negligence, accident or which have had the serial numbers altered, defaced, or removed. Accessories, including batteries are not covered by this warranty.
Copyright © 2023 Triplett
www.triplett.com

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