New Earth Testers from Megger Dover

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Existing products

 Direct 2 terminal & 3 terminal earth electrode testing • • DET62D DET3/2  2 & 3 terminal and 4 terminal soil resistivity testing • • • DET5/4D DET5/4R DET2/2 2

Products being replaced

 DET62D only at this stage  New family to replace DET62D • • DET3TD Two & three pole ground tester digital display DET3TC Two & three pole ground tester with ART capability, digital display • • DET3TA Two & three pole ground tester analogue display DET4TD Two, three and four pole ground tester digital display 3

New product common philosophy

 Intuitive to use  One button operation  Automatic checking to avoid mistakes and poor connections, indicated on display  Complete and ready to start testing kit, including calibration certificate  Competitively priced to sell  Combination of features, benefits and price makes these ground testers the most attractive on the market 4

New product common features

          Based on building wiring housing Delivered in tough carry case Includes stake and wire kit with each model Very high quality large and easy to read LCD Includes batteries Has quick start guide on the lid Easy to use wearing gloves Comes with calibration certificate as standard Three year warranty Avoids language variants for easy stock holding 5

New Digital Earth Tester housing

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Basic specification – DET3TD

 2 terminal test, no links required  3 terminal earth electrode test  Earth voltage measurement  LCD display  Automatic checking of • • • • • Current spike resistance Voltage spike resistance Earth noise voltage Blown fuse Battery status 7

Basic specification – DET3TC

       2 terminal test, no links required 3 terminal earth electrode test 3 terminal earth electrode test without disconnection using optional ICLAMP ( A ttached R od T echnique, A.R.T.) Earth voltage measurement Earth current measurement using optional ICLAMP LCD display Automatic checking of • • • • • Current spike resistance Voltage spike resistance Earth noise voltage Blown fuse Battery status 8

Measuring current with the DET3TC and ICLAMP

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The A ttached R od T echnique with ICLAMP

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How the A.R.T. technique works

The test works by • Measuring the current flowing through the earth electrode under test that is generated by the the DET3TC at 128 Hz • Ignoring the current flowing from the DET3TC into the parallel connections and other earth currents normally flowing in the electrode under test  This is a huge benefit because • It allows the user to test the electrode without disconnecting it from the system, avoiding the complication of system shutdown or auxiliary temporary electrodes • It means that the connections to the electrode under test can be left un-disturbed 11

Basic specification – DET4TD

      2 terminal test, no links required 3 terminal earth electrode test 4 terminal soil resistance test up to 2000 ohms Earth voltage measurement LCD display Automatic checking of • • • • • Current spike resistance Voltage spike resistance Earth noise voltage Blown fuse Battery status 12

DET3TA – analogue model

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Basic specification – DET3TA

     2 terminal test, no links required 3 terminal earth electrode test Earth voltage measurement Analogue display Automatic checking of • Current spike resistance  Manual checking of • • • • Voltage spike resistance Earth noise voltage Blown fuse Battery status 14

Rear connection panels

 Terminals colour coded to lead set  ICLAMP unique connector 15

           

Common specifications - electrical

Resistance range: 0.01 to 2000 Ω Resistance accuracy: 2% ± 3 digits (Except DET3TA) Earth voltage range: 0 – 100V Earth voltage accuracy: 2% ± 2V (Except DET3TA) Earth current range (DET3TC + ICLAMP): 0.5mA to 19.9A

Test frequency: 128 Hz Test voltage: 25V or 50V selectable (Factory set 50V) Earth noise rejection: 40V peak to peak Battery type: 8 off AA cells Approximate battery life: 800 consecutive tests Safety: EN61010-1 CATIV 100V EMC: EN61326-1:1998 heavy industrial 16

Common specifications - Mechanical

 IP54  Terminals: 4mm plug type  Dimensions: 203 x 148 x 78mm  Weight: 1kg  Operating temperature range (digitals): -15 to 55 °C  Operating temperature range (analogue): -20 to 50 °C  Storage temperature range (all): -40 to 70 °C  Humidity: 95% RH non-condensing at 40 °C 17

Spares and Accessories

 Spare replacement parts • • • Two earth test stakes: 6220-804 3 replacement test leads: 6220-805 (3m,10m,15m) 4 replacement test leads: 6220-806 (3m,10m,10m,15m)  Accessories • Terminal adaptor set (4): 6220-803 – Used when the customer wants to connect non standard leads without 4mm connectors fitted • • Current clamp: ICLAMP Spare carry case: 5410-409 18

Accessories – terminal adaptor set

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Accessories

 ICLAMP • Extra cost  Earth test spikes • Included  Lead set • Included  Carry case • Included  And not shown • Standard calibration certificate included 20

Pricing strategy

 To be attractive to customers with a blend of quality, performance and value for money  To be attractive to distributors by being profitable and easy to stock 21

Features and benefits

 Delivered in hard carry case • • Everything you need in one box Customers will probably leave the instrument in the case while testing to protect it  Delivered ready to use • • Nothing else to buy – batteries, stakes and wire included Calibration certificate – many users insist on this before use  CATIV rated • Safety class rating in “outdoor” environment required by some customers • LEM Handy Geo only specified to CATII 22

Features and benefits

 Unique to new family at this price level • • Attached Rod Technique – currently the LEM GEO-X is the only other product that offers this at a far higher price and as part of a much more complex instrument No external links required for 2 terminal testing – nothing to lose and nothing to forget  We are strong with • • • • • • Battery status indicator – not just a “low” warning IP rating 54 – only equalled by Kyoritsu Temperature range – the widest Voltage reading (LEM 30V against our 100V) Best noise rejection Equal best accuracy with Alphatek and Extech 23

Features and benefits

 We are strong with • Using 128Hz as our test current – close to mains frequency but easy to detect. Industry standard • • • 2000 ohm measurement maximum Instructions on tester Stake and wire kit included  Conclusion • We have the best blend of specification, included accessories, ease of use and price on the market 24

A few potential customers

 Specialist earthing contractors  Large electrical contractors  Electricians in markets with significant domestic and light industrial T T systems  Maintenance companies and personnel  Insurance inspect/test Engineers  Utilities  Mobile/radio communications infrastructure test and installation contractors 25

Available?

 New family in stock Dover now except.....

 DET4TD available end of November  DET62D • • • Declare intention to be made obsolete December 2005 Last orders accepted December 2006 Repaired and calibrated for a further 5 years.

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