megger dc insulation resistance testers -seminario
DESCRIPTION
dc insulation resistance testersTRANSCRIPT
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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
Old S1
New S1
New S1 ?
New MIT
Old MIT
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Environment kV
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Megger 5 kV and 10 kV immunity levels
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Environment kV
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Fully tested in 765 kV
S1-568 S11068
Fully tested in 765 kV
S1-568 S11068
Fully tested in 765 kV
S1-568 S11068
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
10kV
V
V
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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M ohms
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500V1kV
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10kV
5kV
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Common user issues
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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