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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

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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

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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

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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

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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

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Basic specification – DET3TC

2 terminal test, no links required 3 terminal earth electrode test 3 terminal earth electrode test without disconnection using

optional ICLAMP (Attached Rod Technique, 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

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Measuring current with the DET3TC and ICLAMP

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The Attached Rod Technique 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

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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

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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

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Rear connection panels

Terminals colour coded to lead set ICLAMP unique connector

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Common specifications - electrical Resistance range: 0.01 to 2000Ω 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

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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

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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

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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

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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

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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

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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

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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

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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

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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.