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MIT and S1 Series

5kV and 10kVDC Insulation Resistance Testers

Dover PowerPaul Swinerd

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Presentation AgendaMegger MIT 5kV and 10 kV series summaryNew 5kV and 10 kV S1-Series introduction – New product launch!Market segmentation and differentiationMIT range and S1-Series customer benefits

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New S1 IRT FamilyIndustrial range of IRTs

• MIT515, MIT525, MIT1025 – Industrial range• Introduced in April 2012 replacing MIT510/2, MIT520/2,

MIT1020/2

Utility/service company range of IRTs• Old S1:

– S1-552/2, S1-1052/2 – S1-554/2, S1-1054/2 (4 mA noise rejection)– Will still be sold for 6 months following new S1 launch

• New S1: New product launch today!– S1-568 (5 kV, 6 mA SC current, 8 mA noise rejection) – S1-1068 (10 kV, 6 mA SC current, 8 mA noise rejection)

MIT525

S1-568

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MIT515 MIT525 MIT1025 range summaryMIT

MeggerInsulation Tester

The Industrial Range

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New S1-Series IntroductionS1 - Series

Descendant of Series 1

The Utility premium range.Higher noise immunity

Faster capacitance charge

Remote operation

High altitude safety

Bluetooth

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TRANSPORT MILITARY INDUSTRIAL HEAVY INDUSTRIAL

EXAMPLE LOCATIONS RAILWAY ARMY PAPER MILLS STEEL WORKSSHIPS NAVY MANUFACTURING >5MVA RAW MATERIAL CONV >5MVA

AIRPORTS AIRFORCE MEDIUM ENGINEERING HEAVY ENGINEERINGPORTS MILITARY AEROSPACE NEWS PRESS LARGE FACTORIES

TRAM SYSTEMS PANEL BUILDERS GLASS / CERAMICSUNDERGROUND AUTOMOTIVE ALUMIMIUM SMELTING

CIVAL AEROSPACE OIL REFININGSHIP BUILDING

LV + HV LV + HV LV + HV LV + HV

INITIAL CONTACT IF HV MOTOR IF HV MOTOR IF HV MOTOR IF HV MOTORRECOMMENDATION OR SUBTATION = OR SUBTATION = OR SUBTATION = OR SUBTATION =

MIT515 MIT515 MIT515 MIT515MIT525 MIT525 MIT525 MIT525

MIT1025 MIT1025 MIT1025 MIT1025OTHER OPTION S1-568 S1-568

S1-1068 S1-1068For Service Companies For Service Companies

Remote operation for OEM? Remote operation for OEM?

MIT Industrial range 5kV and 10 kV

S1 Series - Utility 5kV and 10 kV

Market segmentation and differentiation

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LARGE SITES POWER GENERATION POWER DISTRIBUTION POWER GENERATION POWER TRANSMISSION

SITE AND BUILDINGS WIND FARM SUBSTATION POWER STATIONS SWITCH YARDSUNIVERSITIES HV 11 -132 KV HYDRO 132 - 800 KV TRANSMISSIONTRADE PARKS REMOTE TRANSFORMERS HV 30 - 800 KV OVERHEAD CABLESRETAIL PARKS

PHARMACUTICALSHOSPITALS

LOCAL AUTHORITIESBANKSLV + HV LV + HV LV + HV LV + HV HV

IF HV MOTOR MIT515 S1-568 S1-568 S1-568OR SUBTATION = MIT525 S1-1068 S1-1068 S1-1068

MIT515 MIT1025MIT525MIT1025S1-568 S1-568 MIT515S1-1068 S1-1068 MIT525

For Service Companies If there is excessive MIT1025 inverter noise If price is problem

S1 Series - Utility 5kV and 10 kV

MIT Industrial range 5kV and 10 kV

Market segmentation and differentiation

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Megger 5 kV and 10 kV immunity levels

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Fully tested in 765 kV

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MIT515 MIT525 MIT1025MIT515 MIT525 MIT1025

Market segmentation and differentiationNoise immunity is important differentiator

But not the only one…

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Top 8 instrument requirements

1. Safety2. Easy to use3. The right functionality4. Good noise Immunity5. Good accuracy6. High output current7. High measurement range8. Tough and reliable

How do they relate to these common customer issues?1. Safety2. Ease of use3. Operational reliability4. Measurement reliability5. Measurement functionality

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5kV and 10kV insulation tester users - Common issues

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1. Safety – a key issue– High energy environments?

– CATIV rating provides confidence– CATIV 600V immune to 8kV high energy transients– New S1-Series CATIV 600V to 3000m altitude– CAT rating is on ALL terminals– Protected to 1000V between ALL terminals

Common user issues

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1. Safety – a key issue– High energy environments?

– IEC 61010-031 :2008 important safety enhancements for test leads– New section “Prevention of HAZARD from arc

flash and short-circuits” added

Common user issues

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1. Safety – a key issue– High energy environments?

– Dual case design– Yes… TWO cases– Inner case fire retardant – Outer case ultra tough

– Lid mounted leadset bag prevents lead damage

– Isolated USB-to-PC interface up to 10 kV

Common user issues

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1. Safety – a key issue– High energy environments?– Concern over receiving shock from instrument

– The danger is actually the after effectsLarge finger guards to keep fingers back

from live parts

Side Pivot guards maintain creepagepaths

Pivot guard maintains clearance

Large finger guards to keep fingers back

from live parts

Side Pivot guards maintain creepagepaths

Pivot guard maintains clearance

Finns increase surface creepage distance

Finns Finns increase surface creepage distance

Finns

Common user issues

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1. Safety – a key issue– High energy environments?– Concern over receiving shock from instrument– Safe discharge of long cable capacitance

– Clips are not removable – hard wired– Unique locking terminals

Common user issues

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2. Ease of use– Difficult to carry and store

– 24% reduction in size over predecessors– 35% reduction in weight over predecessors– Now only 4.5kg

Common user issues

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2. Ease of use– Difficult to carry and store– Takes too long to perform tests– Difficulty operating

– Rotary switch operation– No hidden modes of operation– No 2nd function keys– Quick start guide on all

Common user issues

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2. Ease of use– Difficult to carry and store– Takes too long to perform tests– Difficulty operating

– Testing with non preset voltage?– E.g. 2200V ?– New Lock Voltage Range– Select required test voltage immediately at

switch on.– Set voltage up in setting range, then select on

the locked voltage range– S1 adds remote operation via USB

OFF 500V1kV

2.5kV

5kV

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TΩ

USB

Common user issues

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2. Ease of use– Difficult to carry and store– Takes too long to perform tests– Difficulty operating– Test result storage difficult

– Test results date and time stamped– D/L stored results or real-time download– Temperature value stored– S1 stores humidity value– S1 downloads via bluetooth

Common user issues

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3. Operational reliability– Battery found flat – previous user didn’t charge

– Can operate from line supply – Charges from reported dead in TWO hours– Half hour charge provides a full hour testing– Full 6 hours continuous testing from full charge

Common user issues

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3. Operational reliability– Battery found flat – pervious user didn’t charge– Short battery service life

– New Lithium ion battery– Safety accredited

Common user issues

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3. Operational reliability– Battery found flat – pervious user didn’t charge– Short battery service life– Battery replacement difficult

– Customer replaceable battery– No calibration required– Access without disturbing calibration seals

Calibration seals

Battery cover

Calibration seals

Battery cover

Common user issues

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3. Operational reliability– Battery found flat – pervious user didn’t charge– Short battery service life– Battery replacement difficult– Difficult to read display in low light

Common user issues

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3. Operational reliability– Battery found flat – pervious user didn’t charge– Short battery service life– Battery replacement difficult– Difficult to read display in low light– Instruments get damaged (Not Megger obviously…)

– Toughness not compromised with fire retardant materials

– Quality components– Quality build– Built to last….. It’s a Megger!

IP65

Common user issues

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4. Measurement reliability– Poor measurement repeatability

– Is the instrument accurate enough?– Typical measured values in sub-station / switch

yard 100GΩ to 500GΩ– Megger provides accuracy where it matter most!– 5% all the way up to at least 1TΩ

Common user issues

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4. Measurement reliability– Poor measurement repeatability

– Is the guard terminal operating correctly?– Megger is still the only manufacturer to specify the

performance of the guard terminal

Common user issues

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4. Measurement reliability• Poor measurement repeatability• Variation of measurement during test

– Likely to be caused by noise pick up– 2mA noise immunity is a good instrument– Megger MIT range is 3mA

– Ideal for any industrial environment– In-fact up to ~220 kV locations

– S1-568 and S1-1068 8mA with variable time constant– Ideal for Utilities and Service companies– Stable readings anywhere

Common user issues

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Tested performance at 765 kV - result below• 8 mA noise rejection• Four selectable filter settings: 10 s, 30 s, 100 s, 200 s

Seoni 765 kV substationNo filter gives -ve current readings

Common user issues

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4. Measurement reliability– Poor measurement repeatability– Variation of measurement during test– Problems maintaining selected test voltage

– Is the output voltage right?– Is there enough power?– High loads could mean low voltage– MIT 3mA into short circuit– S1 Series 6mA into short circuit– MIT and S1 has Max power regulation - ensures

maximum power transfer

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4. Measurement reliability– Poor measurement repeatability– Variation of measurement during test– Problems maintaining selected test voltage– Instrument only says infinity?

– Inability of instrument to take measurement– MIT 5kV to 10TΩ, and 10kV to 20TΩ– S1 5kV to 15TΩ, and 10kV to 35TΩ– Megger also keeps focus on accuracy

Common user issues

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5. Measurement functionality– Can’t test rotating machinery to IEEE 95

– Ramp test now included on MIT and S1

– Meets requirements of IEEE 95– Default ramp of 1000V per minute– User adjustable– View plotted current curve via

Power DB Lite

Common user issues

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5. Measurement functionality– Can’t test rotating machinery to IEEE 95– Can’t test HV rotating machinery to IEEE 43-2000

– Up to a maximum 10kV required– MIT1025, S1-1068 are 10kV

Common user issues

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5. Measurement functionality– Can’t test rotating machinery to IEEE 95– Can’t test HV rotating machinery to IEEE 43-2000– Time taken to test long cables

– MIT 3mA charge current– S1 6mA charge current– Max. power regulation helps here too– MIT charges capacitance as fast as many

competitor 5mA instruments– S1 is fastest on the market

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Common user issues

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5. Measurement functionality– Can’t test rotating machinery to IEEE 95– Can’t test HV rotating machinery to IEEE 43-2000– Time taken to test long cables– Need a separate volt meter

– MIT and S1 now has user selectable voltage range– Measures AC and DC with 3% ±3V accuracy

Common user issues

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5. Measurement functionality– Can’t test rotating machinery to IEEE 95– Can’t test HV rotating machinery to IEEE 43-2000– Time taken to test long cables– Need a separate volt meter – Cannot detect induced voltages– Cannot verify generated supply frequency

– Measures frequency (Hz) of applied AC voltage– Verify generated frequency– Detect presence of induced voltages

Common user issues

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S1-Series customers Sell current S1-Series to

• Utilities • Large OEMs

– ABB– Alstrom– Areva – Siemens– GE

• Large national/regional service companies• Regularly specified into utilities, service companies

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Thank you