Prodott Overview
The Extech MG320 is a versatile instrument combining a portable 20GΩ/1000V insulation tester with a True RMS multimeter. It is designed for professionals needing to perform insulation resistance measurements and general electrical troubleshooting.
Key features include Polarization Index (PI) and Dielectric Absorption Ratio (DAR) modes, a programmable timer for test duration, and a comparator function for setting custom pass/fail criteria. The device offers 5 test voltage ranges and includes high voltage and overload indication for safety. It is rated CAT IV 600V for enhanced safety.
The MG320 allows for manual storage and recall of up to 99 readings, making it suitable for field use where data logging is required. It comes complete with test leads, an alligator clip, 6 AA batteries, and a soft carrying case.
Figura 1: Quddiem view of the Extech MG320 Insulation Tester, showing the display, function dial, and input terminals.
Informazzjoni dwar is-Sigurtà
Always adhere to local and national safety codes. Use personal protective equipment (PPE) as required. Ensure the device is in good working condition before use. Do not attempt to measure voltages jew kurrenti li jaqbżu l-klassifikazzjonijiet massimi speċifikati.
- CAT IV 600V Safety Rating: This instrument is designed for measurements at the source of the low-voltage installazzjoni, bħal miters tal-elettriku u tagħmir primarju ta 'protezzjoni ta' kurrent żejjed.
- Inspect test leads for damage before each use.
- Tħaddimx il-miter jekk jidher li għandu l-ħsara jew jekk il-kaxxa tkun miftuħa.
- Always disconnect power to the circuit under test before making connections for resistance or continuity measurements.
- Kun konxju ta 'volum għolitage during insulation tests.
Setup
Installazzjoni tal-batterija
The Extech MG320 requires 6 AA batteries for operation. To install or replace batteries:
- Kun żgur li l-miter ikun MITFI.
- Sib il-kompartiment tal-batterija fuq wara tal-unità.
- Uża tornavit biex tiftaħ l-għatu tal-kompartiment tal-batterija.
- Insert 6 AA batteries, observing correct polarity (+/-).
- Ibdel l-għatu tal-kompartiment tal-batterija u waħħalha bil-kamin.
Konnessjoni taċ-Ċombijiet tat-Test
Connect the red test lead to the VΩ input terminal and the black test lead to the COM input terminal for most measurements. For insulation tests, connect the red lead to the V INSULATION terminal and the black lead to the EARTH terminal.
Istruzzjonijiet Operattivi
Kejl tar-Reżistenza għall-Insulazzjoni
The MG320 offers 5 test voltage ranges for insulation resistance. Always ensure the circuit under test is de-energized before performing insulation tests.
- Turn the rotary switch to one of the INSULATION TEST voltage ranges (50V, 100V, 250V, 500V, 1000V).
- Qabbad il-wajers tat-test maċ-ċirkwit jew mal-komponent li għandu jiġi ttestjat.
- Agħfas il- TEST button to initiate the insulation test. The display will show the resistance value.
- Irrilaxxa l- TEST button to stop the test.
True RMS Multimeter Functions
The MG320 also functions as a True RMS multimeter for various electrical measurements.
- VoltagKejl (AC/DC): Turn the rotary switch to the V~ (AC) or V- (DC) position. Connect test leads in parallel with the circuit.
- Resistance Measurement (Ω): Turn the rotary switch to the Ω position. Ensure the circuit is de-energized. Connect test leads across the component.
- Test ta' Kontinwità: Turn the rotary switch to the continuity position. A built-in buzzer will sound if continuity is detected.
Figure 2: An electrician using the Extech MG320 to perform measurements within an electrical panel, demonstrating its application in industrial settings.
Figure 3: A technician conducting tests on industrial piping using the Extech MG320, highlighting its use in maintenance and troubleshooting.
Manutenzjoni
Tindif
Wipe the meter with a dry, clean cloth. Do not use abrasives or solvents. Keep the display clean for optimal readability.
Sostituzzjoni tal-batterija
Ibdel il-batteriji meta jidher l-indikatur tal-batterija baxxa fuq id-displej biex tiżgura kejl preċiż. Irreferi għat-taqsima "Installazzjoni tal-Batterija" taħt Setup għal struzzjonijiet dettaljati.
Ħażna
If the meter is not used for an extended period, remove the batteries to prevent leakage and damage. Store the device in a cool, dry place, away from direct sunlight and extreme temperatures.
Issolvi l-problemi
| Problema | Kawża Possibbli | Soluzzjoni |
|---|---|---|
| Il-miter ma jixgħelx. | Batteriji mejta jew installati ħażin. | Iċċekkja l-polarità tal-batterija; ibdel il-batteriji. |
| Qari mhux preċiż. | Low battery, incorrect function selected, damaged test leads. | Replace batteries, verify function setting, inspect and replace test leads if damaged. |
| "OL" or Overload displayed. | Measurement exceeds the meter’s range. | Select a higher range or ensure the measurement is within the meter’s capabilities. |
Speċifikazzjonijiet
| Speċifikazzjoni | Dettall |
|---|---|
| Brand | Extech |
| Mudell | MG320 |
| Firxa ta 'Reżistenza ta' Insulazzjoni | Up to 20 GΩ |
| Test Voltages | 50V, 100V, 250V, 500V, 1000V |
| Tip ta 'multimetru | RMS Veru |
| Klassifikazzjoni tas-Sigurtà | CAT IV 600V |
| Sors tal-Enerġija | 6 x Batteriji AA (inklużi) |
| Piż tal-oġġett | 1.2 Libbra (madwar 0.54 kg) |
| Dimensjonijiet (L x W x H) | 4 x 9 x 2.5 pulzieri (madwar 10.16 x 22.86 x 6.35 ċm) |
| Komponenti Inklużi | Test leads, alligator clip, 6 AA batteries, soft case |
Garanzija u Appoġġ
Għal informazzjoni dwar il-garanzija u appoġġ tekniku, jekk jogħġbok irreferi għas-sit uffiċjali ta' Extech. website or contact Extech customer service directly. Keep your purchase receipt as proof of purchase for warranty claims.
Extech Contact Information:
- Websit: www.extech.com
- Appoġġ: Irreferi għall- websit għal kuntatti ta' appoġġ reġjonali.
