ET Magazine is Megger's free, printed magazine filled with informative and entertaining articles from across the electrical industry.

Our entire archive of ET magazine issues will be listed here soon.

Some selected articles can be found here:


2023 Popular articles

July-2023 User-driven development in circuit breaker testing

July-2023 Assessing high voltage substation equipment at 1 Hz

July-2023 Batteries are not 'fit and forget' assests!

May-2023 Q&A: Earth/ground testing

May-2023 Stray currents in water pipes in a reverse osmosis (RO) plant

May-2023 Coupling Capacitor Voltage Transformers (CCVTs)

April-2023 Inductance measurements can be confusing – a deeper dive

April-2023 A global view of power transformer technology present and future

February-2023 IEC 61850, digital substations, and the Smart Grid

February-2023 Geek challenge IV

January-2023 How is Megger connected with reindeer herding ?

January-2023 Protecting wind turbines through effective grounding

January-2023 Self-powered relay testing challenges


2022 Popular articles

April-2022 Surge and lighting arresters

April-2022 Motor inrush current

February-2022 VLF testing on motors and generators

February-2022 Understanding generator restricted earth fault (REF) protection and testing


2021 Popular articles

December-2021 The wrong call for contactors

December-2021 ELECTROPEDIA – The IEC vocabulary

December-2021 Electrical hot spot inspection and preventative maintenance

October-2021 IEC 60255 1xx: Protection relay functional standards for all

October-2021 Q&A: Partial discharge testing

October-2021 Testing high speed dc circuit breakers

August-2021 Diagnostic testing of bushings

August-2021 What is a knee point

July-2021 Testing parallel resistances

July-2021 HVDC transmission – in 1904!

May-2021 Excitation voltage options for PD investigations on MV cables

March-2021 Static and dynamic resistance testing of transformer tap changers

February-2021 Keeping a watchful eye on transformers

February-2021 On-line testing of circuit breakers


2020 Popular articles

November-2020 End-to-end testing for line differential protection

November-2020 A toolbox approach to fault location in lv power c

November-2020 Geek Challenge III

October-2020 Partial discharge an interview with the experts

October-2020 Training and education in the covid-era

October-2020 Training opportunities and challenges: the views of a senior trainer

June-2020 Are your electrical workers up to par

June-2020 Monitoring TT low voltage distribution systems

May-2020 The missing link in motor condition monitoring

May-2020 Testing ROCOF protection

April-2020 A bird’s-eye view of the rise of transformer electrical, dielectric testing

April-2020 Meeting the challenge of cable testing in Bolivia

March-2020 A kit for earth testing

March-2020 DC testing of vacuum integrity in mv switchgear

March-2020 Have you ever heard of the Alexanderson alternator?

February-2020 Lesser known facts about ttr testing that are affecting your results

February-2020 Q&A: IEC 61850

January-2020 Motor insulation test voltages: how high is too high?


2019 Popular articles

December-2019 Protection testing the primary way

June-2019 Cable insulation test voltages how high is too high

June-2019 q & a insulation resistance testing

May-2019 Surge testing electric motors cooling the debate

May-2019 Pictures on your radio

April-2019 The importance of the guard terminal in insulation testing

March-2019 Surge testing electric motors

March-2019  q & a winding resistance testing

February-2019 maximising asset reliability

January-2019 RADAR – In 1904!

January-2019 Big success for CT testing in India

January-2019 Meet IDA: An interview with Megger’s Dr. Peter Werelius


2018 Popular articles

November-2018 With you all the way for low-resistance testing!

November-2018 Megger helps Nebraska public power district to clear cable replacement backlog

November-2018 A voltmeter in your pocket

July-2018 The many facets of loop testing

July-2018 The do’s and don’ts of insulation power factor tes

July-2018 Best practice for sweep frequency response analysis

July-2018 Q&A Earth testing

June-2018 Keeping wind farms safe

June-2018 Salvaging flood damaged equipment

June-2018 A helping hand for insulation testing above 1 kV

February-2018 Transformer turns ratio testers who needs them

February-2018 Earth resistance testing with Euclid and Da Vinci

February-2018 Q&A: Battery testing

February-2018 The do’s and don’ts of insulation power factor testing – part 1

January-2018 insulation testing a word of caution!


2017 Popular articles

December-2017 Earth resistance testing testing with euclid and d

December-2017 A new tool for averting failures in HV and MV systems

December-2017 New battery testing guide from Megger

November-2017 Transformer life management oil tan delta

November-2017 Reducing workplace risk by employing qualified personnel

November-2017 Warsaw University of Technology and Megger: A productive partnership

November-2017 Telegraphy spans the Atlantic - briefly

October-2017 Find out about SFRA the practical way!

October-2017 Condition analysis for gas-insulated breakers

October-2017 Circuit breaker and transducers part 2

October-2017 Q and A: High voltage circuit breakers

September-2017 Circuit breaker and transducers part 1

September-2017 From the Audion to talking movies

September-2017 Auto-recloser whys and wherefores

September-2017 Hazardous materials and grounding

August-2017 Electrical safety when using test equipment

August-2017 The last resort

August-2017 Centrix takes cable test to the heart of the city

July-2017 Power quality beyond the fundamentals

July-2017 Celebrating 10 years of DualGround™ circuit breaker timing with DCM technology

June-2017 Safe, fast hv circuit breaker testing with dcm dua

May-2017 Primary injection testing challenges and solutions

April-2017 pd diagnostics for aging mv pilc cables

March-2017 How important is electrical equipment maintenance

March-2017 Power quality effects on transformers and motors

January-2017 transformer condition assessment with an integrated test van


2016 Popular articles

December-2016 Frequency response of stray losses in transformers

December-2016 Electrical safety - assessing for electrical hazards

September-2016 Turns ratio testing hand crank versus automatic

July-2016 Tan delta testing: variable frequency method

June-2016 Frequently confused by frequency testing

March-2016 Sweep frequency response analysis


2008 - 2015 Popular articles

October-2015 gic a major risk factor for the power grid

July-2015 Diagnostic testing of high voltage circuit breaker

June-2015 Electricity theft an underestimated problem

May-2015 Diagnostic testing of high voltage circuit breaker

November-2014 Heroic developments in relay testing

July-2009 Current transformers

June-2009 Breaking the mould in circuit breaker testing

April-2009 Finding fault with cables

October-2008 You got the power