chosen by an electrician, for electricians. FREE SHIPPING ON ALL ORDERS, AUSTRALIA WIDE.

Extech 382357 Clamp-on Ground Resistance Tester

Extech 382357 Clamp-on Ground Resistance Tester

Brand: Extech
Item Number: Extech 382357

Regular price $2,770.90 On Sale

  • Why Buy From Delta Pro Meters & Measurement

    Extech 382357 Resistance / Leakage Tester

    The Extech 382357 Clamp-on Ground Resistance leakage tester enables non-contact measurements of ground conductor leakage, and/or ground conductor resistance, without the need for auxiliary ground spikes.

    The Clamp-On Ground Tester simplifies ground resistance measurements on multiple-point ground systems. Use to verify the resistance of cellular and communication tower ground grids, check utility transmission systems and grounding rods, perform maintenance on electrical transportation systems.

    Ideal for verifying ground systems in sub-stations, factories, and office buildings. 

     

    QUICK STATS

    • AC Current Clamp / Ground Resistance / Leakage Tester.
    • True RMS 
    • Clamp Leakage resolution/range  0.001mA on 0.300 - 1.000mA range, 0.01mA on 1.00 - 10.00mA range, 0.1mA on 10.0 - 100.0mA  range, 1mA on 100 - 1000mA range,  0.01A on 0.20 to 4.00A range, 0.01A on 4.00 - 30.00A range.
    • Count 9999.
    • CAT  III 300V CAT II 600V AC to ground. 
    • Clamp Basic Accuracy ±(2.0%rdg + 0.05mA) on 0.300 - 1.000mA range, ±(2.0%rdg + 0.03mA) on 1.00 - 10.00mA range, ±(2.0%rdg + 0.3mA) on 10.0 - 100.0mA  range, ±(2.0%rdg + 0.3mA) on 100 - 1000mA range,  ±(2.0%rdg + 0.03A) on 0.20 to 4.00A range, ±(3.0%rdg + 0.03mA) on 4.00 - 30.00A range.
    • Ground Resistance ranges 0.025Ω - 0.250Ω with 0.002Ω resolution through to 600.1Ω - 1500Ω with 20Ω resolution.  See specifications sheet for specific resistance ranges and accuracies. 
    • Warranty   2 year warranty.

       

      FEATURES

      *  Autoranging ground resistance measurements from 0.025Ω to 1500Ω with 0.002Ω resolution

      *  True RMS AC Leakage current range of 0.2mA to 30A with 1.000mA resolution

      *  Programmable datalogging with 116 points

      *  Programmable Hi/Lo alarms

      *  0.9″ (23mm) Jaw size for large ground rods

      *  Self-calibration when powered on

      *  Verification resistors to confirm the accuracy of the meter.

      *  Cat III - 300V.

       

      ACCESSORIES INCLUDED

      *  Carrying case, metal

      *  Resistance check plate

      *  9V battery

      *  User manual

        

      SPECIFICATIONS 

      Resistance Test Frequency 3.333KHz (15mV rms approx.)
      Max Conductor size 0.9” (23mm)
      Display 4-digit (9999 count) display
      Sampling rate 0.5 seconds
      Power supply One 9V battery
      Power consumption 40mA
      Temp. Coefficient 0.15 times the specified accuracy per degree centigrade from 4 to 18°C and 28 to 50°C
      Current Overload Protected to 100A Continuous, 200A for less than 5 seconds (50/60Hz)
      Range selection Automatic ranging
      Safety Meets the requirements for IEC1010-1 Category III 300V and Category II 600 V
      Operating conditions -0 to 50°C with < 85% RH
      Storage conditions -20 to 60°C with < 75% RH
      Dimensions 258 x 110 x 47mm
      Weight 700g
      Accessories Resistance check plate, 9V battery, carrying case


       

      DATA SHEET   Click here to view in pdf format

       

      USER MANUAL

      We know you want your order FAST, and so we make sure you receive it as quickly as possible.

      If your order is in stock, it will ship by the following business day.  Shipping is generally 2 - 5 business days (allow 1 or 2 extra days if you're in NT, WA, or a remote location).

      And of course we want the ordering process to be as simple as possible for you, so rather than offering tiered shipping rates, we offer FREE SHIPPING AUSTRALIA WIDE on all orders.

      If you have any questions about the shipment of your order, feel free to contact us at support@deltapro.com.au

      ******

      Order Confirmation:  

      As soon as you place your order, you will receive an order confirmation email.  This means that we have received your order in our system and pre-authorised your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that your item is in stock and available for immediate shipment.  

      If your item is on backorder (which can increase shipping times up to 4 weeks), we will reach out to you via phone or email before confirming your order. 

       

      Shipping Times:  

      If your order is in stock, it will ship by the following business day.  Please allow 2 - 5 business days for shipping (allow 1 or 2 extra days if you're in NT, WA, or a remote location).

      Once your item has been shipped you will be emailed a consignment number so you can track your order.

       

      30 Day Guarantee:  

      If your order arrives and you realise that it's not the right piece of equipment for you, then you are welcome to return it within 30 days of your purchase. 

      Note: the product must be in new condition, in the original packaging.

      To request a refund or exchange, please email support@deltapro.com.au within 30 days of placing your order.  Click here for further information on Exchanges and Returns.

      Delta Pro are committed to helping you find the right piece of equipment, with the right specifications. 
       Whether you're looking for a multimeter, clamp meter, leakage tester, insulation tester, thermal imager, or other specialty meter, we have what you need.  
      And in the unlikely event that we don't, we can most likely source it for you!

       

      Easy-to-use website

      You'll see that our site offers a super easy to use search-filtering-system on each of our collection pages.
      Make sure to put it to good use, as it will make your searching so much easier!
      And as you begin searching, you'll see that we offer a wide range of quality test and measurement equipment (multimeters, clamp meters, leakage testers, thermal imagers, insulation testers, plus specialty meters).
      We wanted to make sure that there was a good selection of quality meters for you to choose from, and options that would suit various specialties and requirements.  

      We’ve also included ‘Quick Stats’ in each of the meter descriptions for you…  making sure that it's super clear, fast and easy to find those meter features and specs you're looking for.  Saving you hours and hours of research and scouring through fine print! 

      If you're new to test and measuring equipment, you will also find it helpful to read some of the blogs, or the Understanding Terms and Features articles.  So many features can be listed on a multimeter or clamp meter, and if you don't fully understand those features yet, you'll find the articles helpful!
       
       

      Personal Service

      We are a family-run business, 100% Australian owned and operated. 
      We're a small business, and committed to impressing you with our outstanding professional and personalised service.

       

       

      Fast & Free Shipping, Australia Wide

      Delivery van

      We've teamed up with some great delivery drivers to make sure you receive your order as quickly as possible.   We know you want your order fast, and we do everything we can to make sure that happens.

       

      Reputable & Quality Brands

      Sticker showing Quality Brand Stamp

      Our founder Steve is an electrician himself, and he says there's nothing worse than having dodgy tools and equipment in your toolbox.  (We in the office however feel confident there are in fact things much MUCH worse.  Like you know, being chased by a crazy, angry bear; or being a hit by speeding bus; or being zapped by 240 volts of electricity while standing bare foot in a puddle...  But you know, he's the boss, so we'll go with what he says).    Which is why he has made sure that every brand and model stocked in our store is a brand with a solid reputation for quality products. 

       

      30 Day Returns

      30 Day Guarantee

      Shop risk free, and be confident in your choice!  If you're not 100% sure you've ordered the best piece of equipment for your needs (although this is unlikely, particularly as you have our easy-to-use search filtering system and Steve's help if you need it!), then you're welcome to  return any of our items within 30 days, for a full refund.

      (See our Returns Policy for more info).

       

      Minimum 12-Month Manufacturer's Warranty

      Delta Pro are authorised dealers for all our brands, which means you get the full manufacturer's warranty on all products. This is a minimum of 12 months unless stated otherwise based on the product.

       

      Expert Advice & Support

      Sign - Chosen by an Electrician, for Electricians

      That's right, Steve has been using multimeters and clamp meters since he was 15 years old.  He's got personal experience using a large range of different products, and is pretty well versed on all the different features and functions and what they mean.  If you're not sure exactly what you're after, or if you have questions on any of the products, feel free to get in touch.  Steve is always happy to chat.  Call us on 1300 678 180, email us at info@deltapro.com.au or use the live chat!

       

      Don't just take our word for it though...

      Look at what our customers are saying - 

      "Excellent service, thanks very much Steve, really appreciate your help and advice!"  Matt Bowden, Starboard Air, QLD
      ***
      "Fantastic, quick delivery and very helpful sales staff. Will definitely be purchasing from them again."  Daniel G, Electrician, NSW
      ***

      "I wanted to get a multimeter for my son, but had no idea where to start.  Your home and hobbyist collection really helped."  Bob W, NSW

       

      Still not convinced?  Find out more More about us and meet Steve in a slightly awkward video (hey, he's an electrician, not movie star!).

       

      Expert Advice & Support

      And, at the risk of repeating ourselves...  did we mention expert advice and support? 

      If you'd like assistance finding the best multimeter or clamp meter for you, then you're in the right place!  Simply click on the image below, answer a couple questions about how and where you're planning on using your new meter, and we'll do the research for you.  Then you only need to keep an eye out  in your emails for our suggestions.

       

      Man overwhelmed by choice of multimeters

       

      Confused?

      Overwhelmed?

      It’s one thing to know what basic functions you require of a multimeter - Voltage, Current, Resistance, Capacitance, Temperature etc.  It’s another thing to nut through all the specifications and understand exactly what your multimeter is capable of.

      A lot of the time you only need to know the course parameters of each measurement,  e.g. up to 1000A current,  600V voltage,  1 mega-ohm resistance etc.  But sometimes, particularly in industrial applications, you need to know how your multimeter performs a particular test, how accurate the displayed results are, and whether or not the multimeter will be safe and reliable for the intended application. 

      This is where terms such as count, range, resolution, basic accuracy, IP rating, CAT rating, True RMS, crest factor and others come into play. 

      If you are not familiar with these terms and how they relate to multimeter measurement, Steve has put together a series of blogs to explain in laymen’s terms what each mean.

       Check them out here.

      Extech 382357 Resistance / Leakage Tester

      The Extech 382357 Clamp-on Ground Resistance leakage tester enables non-contact measurements of ground conductor leakage, and/or ground conductor resistance, without the need for auxiliary ground spikes.

      The Clamp-On Ground Tester simplifies ground resistance measurements on multiple-point ground systems. Use to verify the resistance of cellular and communication tower ground grids, check utility transmission systems and grounding rods, perform maintenance on electrical transportation systems.

      Ideal for verifying ground systems in sub-stations, factories, and office buildings. 

       

      QUICK STATS

      • AC Current Clamp / Ground Resistance / Leakage Tester.
      • True RMS 
      • Clamp Leakage resolution/range  0.001mA on 0.300 - 1.000mA range, 0.01mA on 1.00 - 10.00mA range, 0.1mA on 10.0 - 100.0mA  range, 1mA on 100 - 1000mA range,  0.01A on 0.20 to 4.00A range, 0.01A on 4.00 - 30.00A range.
      • Count 9999.
      • CAT  III 300V CAT II 600V AC to ground. 
      • Clamp Basic Accuracy ±(2.0%rdg + 0.05mA) on 0.300 - 1.000mA range, ±(2.0%rdg + 0.03mA) on 1.00 - 10.00mA range, ±(2.0%rdg + 0.3mA) on 10.0 - 100.0mA  range, ±(2.0%rdg + 0.3mA) on 100 - 1000mA range,  ±(2.0%rdg + 0.03A) on 0.20 to 4.00A range, ±(3.0%rdg + 0.03mA) on 4.00 - 30.00A range.
      • Ground Resistance ranges 0.025Ω - 0.250Ω with 0.002Ω resolution through to 600.1Ω - 1500Ω with 20Ω resolution.  See specifications sheet for specific resistance ranges and accuracies. 
      • Warranty   2 year warranty.

         

        FEATURES

        *  Autoranging ground resistance measurements from 0.025Ω to 1500Ω with 0.002Ω resolution

        *  True RMS AC Leakage current range of 0.2mA to 30A with 1.000mA resolution

        *  Programmable datalogging with 116 points

        *  Programmable Hi/Lo alarms

        *  0.9″ (23mm) Jaw size for large ground rods

        *  Self-calibration when powered on

        *  Verification resistors to confirm the accuracy of the meter.

        *  Cat III - 300V.

         

        ACCESSORIES INCLUDED

        *  Carrying case, metal

        *  Resistance check plate

        *  9V battery

        *  User manual

          

        SPECIFICATIONS 

        Resistance Test Frequency 3.333KHz (15mV rms approx.)
        Max Conductor size 0.9” (23mm)
        Display 4-digit (9999 count) display
        Sampling rate 0.5 seconds
        Power supply One 9V battery
        Power consumption 40mA
        Temp. Coefficient 0.15 times the specified accuracy per degree centigrade from 4 to 18°C and 28 to 50°C
        Current Overload Protected to 100A Continuous, 200A for less than 5 seconds (50/60Hz)
        Range selection Automatic ranging
        Safety Meets the requirements for IEC1010-1 Category III 300V and Category II 600 V
        Operating conditions -0 to 50°C with < 85% RH
        Storage conditions -20 to 60°C with < 75% RH
        Dimensions 258 x 110 x 47mm
        Weight 700g
        Accessories Resistance check plate, 9V battery, carrying case


         

        DATA SHEET   Click here to view in pdf format

         

        USER MANUAL

        We know you want your order FAST, and so we make sure you receive it as quickly as possible.

        If your order is in stock, it will ship by the following business day.  Shipping is generally 2 - 5 business days (allow 1 or 2 extra days if you're in NT, WA, or a remote location).

        And of course we want the ordering process to be as simple as possible for you, so rather than offering tiered shipping rates, we offer FREE SHIPPING AUSTRALIA WIDE on all orders.

        If you have any questions about the shipment of your order, feel free to contact us at support@deltapro.com.au

        ******

        Order Confirmation:  

        As soon as you place your order, you will receive an order confirmation email.  This means that we have received your order in our system and pre-authorised your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that your item is in stock and available for immediate shipment.  

        If your item is on backorder (which can increase shipping times up to 4 weeks), we will reach out to you via phone or email before confirming your order. 

         

        Shipping Times:  

        If your order is in stock, it will ship by the following business day.  Please allow 2 - 5 business days for shipping (allow 1 or 2 extra days if you're in NT, WA, or a remote location).

        Once your item has been shipped you will be emailed a consignment number so you can track your order.

         

        30 Day Guarantee:  

        If your order arrives and you realise that it's not the right piece of equipment for you, then you are welcome to return it within 30 days of your purchase. 

        Note: the product must be in new condition, in the original packaging.

        To request a refund or exchange, please email support@deltapro.com.au within 30 days of placing your order.  Click here for further information on Exchanges and Returns.

        Delta Pro are committed to helping you find the right piece of equipment, with the right specifications. 
         Whether you're looking for a multimeter, clamp meter, leakage tester, insulation tester, thermal imager, or other specialty meter, we have what you need.  
        And in the unlikely event that we don't, we can most likely source it for you!

         

        Easy-to-use website

        You'll see that our site offers a super easy to use search-filtering-system on each of our collection pages.
        Make sure to put it to good use, as it will make your searching so much easier!
        And as you begin searching, you'll see that we offer a wide range of quality test and measurement equipment (multimeters, clamp meters, leakage testers, thermal imagers, insulation testers, plus specialty meters).
        We wanted to make sure that there was a good selection of quality meters for you to choose from, and options that would suit various specialties and requirements.  

        We’ve also included ‘Quick Stats’ in each of the meter descriptions for you…  making sure that it's super clear, fast and easy to find those meter features and specs you're looking for.  Saving you hours and hours of research and scouring through fine print! 

        If you're new to test and measuring equipment, you will also find it helpful to read some of the blogs, or the Understanding Terms and Features articles.  So many features can be listed on a multimeter or clamp meter, and if you don't fully understand those features yet, you'll find the articles helpful!
         
         

        Personal Service

        We are a family-run business, 100% Australian owned and operated. 
        We're a small business, and committed to impressing you with our outstanding professional and personalised service.

         

         

        Fast & Free Shipping, Australia Wide

        Delivery van

        We've teamed up with some great delivery drivers to make sure you receive your order as quickly as possible.   We know you want your order fast, and we do everything we can to make sure that happens.

         

        Reputable & Quality Brands

        Sticker showing Quality Brand Stamp

        Our founder Steve is an electrician himself, and he says there's nothing worse than having dodgy tools and equipment in your toolbox.  (We in the office however feel confident there are in fact things much MUCH worse.  Like you know, being chased by a crazy, angry bear; or being a hit by speeding bus; or being zapped by 240 volts of electricity while standing bare foot in a puddle...  But you know, he's the boss, so we'll go with what he says).    Which is why he has made sure that every brand and model stocked in our store is a brand with a solid reputation for quality products. 

         

        30 Day Returns

        30 Day Guarantee

        Shop risk free, and be confident in your choice!  If you're not 100% sure you've ordered the best piece of equipment for your needs (although this is unlikely, particularly as you have our easy-to-use search filtering system and Steve's help if you need it!), then you're welcome to  return any of our items within 30 days, for a full refund.

        (See our Returns Policy for more info).

         

        Minimum 12-Month Manufacturer's Warranty

        Delta Pro are authorised dealers for all our brands, which means you get the full manufacturer's warranty on all products. This is a minimum of 12 months unless stated otherwise based on the product.

         

        Expert Advice & Support

        Sign - Chosen by an Electrician, for Electricians

        That's right, Steve has been using multimeters and clamp meters since he was 15 years old.  He's got personal experience using a large range of different products, and is pretty well versed on all the different features and functions and what they mean.  If you're not sure exactly what you're after, or if you have questions on any of the products, feel free to get in touch.  Steve is always happy to chat.  Call us on 1300 678 180, email us at info@deltapro.com.au or use the live chat!

         

        Don't just take our word for it though...

        Look at what our customers are saying - 

        "Excellent service, thanks very much Steve, really appreciate your help and advice!"  Matt Bowden, Starboard Air, QLD
        ***
        "Fantastic, quick delivery and very helpful sales staff. Will definitely be purchasing from them again."  Daniel G, Electrician, NSW
        ***

        "I wanted to get a multimeter for my son, but had no idea where to start.  Your home and hobbyist collection really helped."  Bob W, NSW

         

        Still not convinced?  Find out more More about us and meet Steve in a slightly awkward video (hey, he's an electrician, not movie star!).

         

        Expert Advice & Support

        And, at the risk of repeating ourselves...  did we mention expert advice and support? 

        If you'd like assistance finding the best multimeter or clamp meter for you, then you're in the right place!  Simply click on the image below, answer a couple questions about how and where you're planning on using your new meter, and we'll do the research for you.  Then you only need to keep an eye out  in your emails for our suggestions.

         

        Man overwhelmed by choice of multimeters

         

        Confused?

        Overwhelmed?

        It’s one thing to know what basic functions you require of a multimeter - Voltage, Current, Resistance, Capacitance, Temperature etc.  It’s another thing to nut through all the specifications and understand exactly what your multimeter is capable of.

        A lot of the time you only need to know the course parameters of each measurement,  e.g. up to 1000A current,  600V voltage,  1 mega-ohm resistance etc.  But sometimes, particularly in industrial applications, you need to know how your multimeter performs a particular test, how accurate the displayed results are, and whether or not the multimeter will be safe and reliable for the intended application. 

        This is where terms such as count, range, resolution, basic accuracy, IP rating, CAT rating, True RMS, crest factor and others come into play. 

        If you are not familiar with these terms and how they relate to multimeter measurement, Steve has put together a series of blogs to explain in laymen’s terms what each mean.

         Check them out here.

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