The METREL MI-3125  COMBO is a multifunction installation tester, designed to make your life easier by replacing a multimeter, insulation tester, RCD tester, loop impedance tester and phase sequence tester in a single portable instrument. Whether you’re an electrician or just need to do some basic repairs around the home, the MI-3125  COMBO has you covered. With its easy-to-use interface and professional functionality, the MI-3125  is perfect for any job big or small.

The Metrel MI-3125 INSTALTEST COMBO is the perfect tool for safety testing and installation on TT and TN systems. With its large graphic display with backlight, results are easy to read and understand. And with integrated characteristics of fuses and RCDs, the AUTO mode makes evaluation a breeze.

Key features

• LED Pass/Fail indicators: two LED indicators for PASS / FAIL evaluation of test results are placed on both sides of the LCD.
• Help screens: instrument comes complete with built-in help screens for referencing on site.
• Built-in fuse tables: this unique feature allows automatic evaluation of the line / loop impedance results compared to the regulations.
• Online voltage monitoring: monitors all 3 voltages in real-time.
• Upgradeable: if changes occur to the regulations, upgrades can be made to the firmware to keep the unit up to date.
• Polarity swap: automatic polarity reversal on continuity test.
• Insulation range: wide range of insulation test voltages from 50 V to 1000 V, reading up to 1000 MΩ.
• Trip Lock function: Zs (RCD) function performs a loop impedance test without tripping the RCD.
• Multi-system testing: tests on single and multiphase TT and TN systems.
• Built-in charger & rechargeable batteries: unit has a built-in charging circuit and comes complete with a set of rechargeable NiMH batteries.
• RCD auto: automated RCD testing procedure significantly reduces test time.

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It delivers fast test results over a broad area of visibility and audibility, with large, easy-to-use buttons, bright backlighting, and clear indicators for any work environment.

The CEM DT-9233 auto Voltage/Continuity Tester (Voltage Absence tester) with CAT III 1000V Safety Rating and Independent ELV indicator LED that indicates if >50 V AC/120 V DC is present even in the event of no battery power or tester main circuit failure. The device complies with EN 61243-3:2014 and is supplied with IP2X test probes.

This probe includes a high-quality construction design, molded heavy-duty case, thicker cord with wear indicator, and well-fitted and durable probe protector.

An ergonomic design feels good in your hands, is easy to operate (even with gloves), and docks securely and quickly. A complete family of testers with the features, functions, and price-performance to fit your applications and preferences.

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With the DT-6650 multifunction installation tester you can get assurance that the permanent installation was performed correctly and safely with the software system and ensures that the safety of the electrical installations in domestic, commercial and industrial applications. Because of a dual display, self-explaining symbols, and a high angle of view, the installation analyser facilitates quick and comfortable measuring procedures. The low impedance mode supports testing earth conductors, main earthing busbars and protective conductors on their low impedance conduct.

The measuring range of the installation analyser for low impedance tests covers 0…2000 Ω with a resolution of 0.001…1 Ω. The most important function of the DT-6650 multifunction installation tester might be the measurement of the insulation resistance. Therefore voltage is applied on the electric conductors, in order to detect any leakage current during the insulation test. These leakage currents can be so low that they might be overseen by protection systems and, at worst, might lead to a fire. The DT-6650 multifunction installation tester can perform tests on test voltages of 125 V, 250 V, 500 V or 1000 V, each with a current of 1 mA.

The earthing measurement can be executed irrespective of the power source. In order to set all facilities and current circuits of a power supply unit to the same electric potential (reference point) and as a protection from short-circuit current, the earthing resistance should be as low on impedance as possible. With a measurement range between 0 …. 2000 Ω and a resolution of 0.01…1 Ω the DT-6650 multifunction installation tester all requirements for a reliable and detailed measurement of the earthing resistance.

Bluetooth function allows quicker recording and transfer of results using the iMit BLE APP via email to your clients.

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With the ATT function enabled, a test of 15mA or less is applied between line & earth. It enables loop impedance measurements without tripping RCDs rated at 30mA and above.

ATT supports measurements using three wires: Line, Earth, and Neutral and also two wires: Line and Earth.

Kyoritsu 6516 Multi Function Tester Features

Bluetooth communication

KEW 6516BT has a Bluetooth communication function and can exchange data with Android/ iOS tablet devices.

Before starting to use this function, download the special application “KEW Smart *” via the internet.

Large LCD & HELP function

• All the test data is shown in one large colored screen.
• HELP function will show how to connect the instrument according to the function selected

Operation in 3 simple steps & Hands free testing

1. Set the rotary dial to your testing range.
2. Connect the instrument to the installation under test.
3. Press the test button.(By remote probe or using the Lockdown function of the test button.)

Anti-Trip Technology (with 2 & 3 wire)

For no trip LOOP L-PE testing on all RCDs.
With 3 wire (L, N, PE), to get the best accuracy readings.
With 2 wire only, very useful in case of no Neutral (i.e. 3-phase motor lines).

Loop Impedance 0.001 resolution

High test current range of 2Ω with 0.001Ω resolution.

Zs/Ra Limit

Zs Limit compares the values required by Electrical Installations Standard with measured results.

The verification of safety requirement on an electrical installation is simplified by using Zs/Ra Limit function. This function will automatically check if the measured loop impedance for TN (or earth loop for TT) is low enough to trip (disconnect) the MCB / Fuse / RCD giving the result of PASS or FAIL on the display.

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(1) Battery Loading Remove the battery cover on the back and put in one 9V Battery.

(2) Battery Replacement When the battery voltage drops below the operating voltage, mark appears . lf it appears , battery should be replaced with new one.

(3) AC Adapter Connection When the AC adapter is used, insert the plug of the adapter into the DC9V connector on the side panel.

1 .Wind is blowing across the microphone would bring additional extraneous noise. Once using the instrument in the presence of wind, it is necessary to mount the windscreen to filte the undesirable signals.

2.Calibrate the instrument before operation if the instrument was not in use for a long time or operation at bad environment.

3.Do not store or operate the instrument at high temperature and high humidity environment.

4.Keep microphone dry and avoid severe vibration.

5.Please take out the battery and keep the instrument in low humidity environment.

When not in use.

11 12 1.Open battery cover and install a 9 Volt battery in battery compartment.

2.Turn on power and select the desired response Time and weighting. lf the sound source consists of short bursts or only catching sound peak, set response to FAST. To measure average sound level, use the slow setting. Select A weighting for general noise sound level and C weighting for measuring sound level of acoustic material.

3.Select the desired Level

4.Hold the instrument comfortably in hand or fix on tripod and point the microphone at the suspected noise source, the sound pressure level will be displayed.

5.When MAX/ MIN (maximum, minimum hold) mode is chosen. The instrument captures and holds the maximum and minimum noise level for a long period using any of the time weighting and ranges. Press the MAX/ MIN button 2 seconds to clear the MAX/MlN Reading. ‘ MAX’ or”MlN” symbol disappears.

6.Turn OFF the instrument and remove battery when not in use

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The special remote probe (optional) and the auto internal function are useful when performing sequential measurements of earth resistance. A contextual help, selectable by the user, is available for each meter range function. The model can also save each test result inside memory and can transfer saved data to a PC through an optical/USB interface with dedicated Windows software (purchased as an option). Each measurement is saved with all sub-results including test parameters with up to two ID locators (selectable by user on meter) in order to reach the exact point where the measurement was performed.

Its features include: continuity test with 200 mA range; insulation measurement ranges 50, 100, 250, 500, and 1000 VDC; trip out time of RCDs type AC (automatic and manual modes); trip out current of RCDs (automatic and manual modes); loop impedance P-P, P-N, P-PE; loop impedance P-P, P-N, P-PE with high-resolution 0.1 MΩ using the IMP57 optional accessory; protective short circuit current; contact voltage; global earth resistance without tripping RCDs; phase sequence indication; auto function – automatic sequence test of global earth resistance + RCD test + Insulation and leakage current.

HT Italia Combi 420 Features:

• Continuity test with 200mA
• Insulation with 50, 100, 250, 500, 1000VDC
• Trip out time of RCDs type AC, A Standard and Selective
• Trip out current of RCDs type AC, A Standard and Selective (up to 1A)
• Loop Impedance P-P, P-N, P-PE
• Loop Impedance with high accuracy (with IMP57 optional accessory)
• Prospective short circuit current
• Contact voltage
• Global Earth Resistance without RCD tripping
• Phase sequence indication
• AUTO function (Ra + RCDtest + Insulation) on plug
• AC TRMS voltage and current
• Active, Reactive, Apparent power and power factor on single phase system
• Harmonics voltage/current up the 49th and THD% on single phase system
• Environmental parameters measure (°C, °F, %RH, Lux, sound level)
• Measure with remote probe (PR400 optional accessory)
• Leakage current
• Data HOLD
• Contextual help at display
• Optical-USB interface with PC connection
• Internal memory

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The HT Italia Combi G2 comes equipped with an inbuilt Wi-Fi, allowing easy data transfer to iOS/Android device of your choice, and USB cable for PC. This way report printing can be done either on site, or from the comfort of your office.

The HT Italia Combi G2 comes with no shortage of accessories, like HT96U, that allows to measure the leakage current. Or IMP57, capable of carrying out high resolution (0.1mOhm) loop/line impedance measurements with prospective short-circuit current calculation. So even when close to power stations, the user will be able to correctly size the protection devices in any system.

HT Italia Combi G2 Function:

• Continuity of protection conductors with 200mA
• Insulation resistance with 50, 100, 250, 500,1000V DC
• Type A, AC, and B general, selective, and delayed RCDs up to 1000mA
• Test on earth leakage relay RCDs (with RCDX10 optional accessory)
• Line/fault impedance with prospective short circuit current calculation
• High resolution line/fault impedance (with IMP57 optional accessory)
• Curve B, C, D, and K MCBs and type gG and aM fuses
• Selection of length, type, and insulation of the cable under test
• Selection of tripping time of the protection device under test
• Non-trip earth loop impedance
• Phase sequence indication
• Voltage drop on main power lines
• Power Analysis, Harmonic analysis up to 25th
• Leakage current by means of the external transducer HT96U (optional)
• Environmental parameters (C/F, HR%, Lux) by means of optional probes
• TFT display with touch-screen
• Help on-line
• Internal memory
• USB interface to connect to the PC
• Built-in WiFi interface to connect to iOS and Android devices
• Rechargeable NiMH batteries (external battery charger)

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