■ Intuitive easyGO® operation using a touch display ■ Li-ion battery-power supply for the measurement system ■ Highest level of safety standard with SafeDischarge technology ■ Remote control of important system functions ■ Cable diagnosis with 50 Hz slope technology ■ Breakdown phase detection for three-phase cable testing

NEWThe new Centrix 2.0 sets the standard for testing,

diagnosis and fault location of power cables.

Centrix 2.0 – the most innovative product from Megger

Centrix 2.0 is the world’s most modern and powerful cable test van system for fast, easy and gentle fault location up to 33 kV.

Equipped with the latest generation of cable diagnostics in conjunction with powerful VLF testing technology, Centrix 2.0 makes it possible to perform standard-compliant cable testing with accompa-nying partial discharge diagnosis.

A unique operating concept with automatic measurement sequences using a touch display or JogDial simplifies operation considerably and allows faults to be located quickly, even for inexperienced users.

Centrix 2.0 is available in 1-phase or 3-phase versions.

02 Centrix 2.0

Centrix 2.0 03

System control based on Linux® – for the highest level of stability and security for the future1

Intuitive easyGO® operation using the 21.5” touch display and JogDiall2

Step-by-step operator guidance for inexperienced users3

Automatic storage and data recording in the history database4

Decay plus double impulse procedure up to 80 kV5

ARM® live burning6

10 good reasons for Centrix 2.0

Highest level of safety standard with SafeDischarge technology7

Simultaneous inspection and diagnosis with new 50 Hz slope technology8

Li-ion battery-power supply for the measurement system9

Remote control of important system functions – for fault location that is gentle to the cables10

Centrix 2.0 sets new standards regarding user friendliness and performance:

Test van concepts from Megger – tailored to the speci� cations of the customer

Centrix 2.0 is operated either by touch display or JogDial.

A powerful computer with a 21.5“ touch display and integrated recovery system and separate hard-ware storage for data and programs ensure secure and stable operation over the entire service life of the measuring system.

The Linux® operating system is completely maintenance free. No viruses, no defragmenting, no expen-sive antivirus programs and all completely free and without the need for licenses.

Strict separation of system control and offi ce application along with graphic information systems (GIS) ensure optima system stability and security. On an optional additional monitor, offi ce applications, the database software or the GeoMap software can be displayed.

System control made simple

04 Centrix 2.0

Touc

h di

spla

y opera

tion

Kn

ob operation

Centrix 2.0 thinks ahead

The system permanently determines the optimal measurement parameters for the correspondi-ng operating mode. The next, logical operating step is automatically preselected by the system and the user only needs to confi rm it, simply and directly! If necessary, fi ne adjustments can be made manually at any time.

Reduction of the operating elements to a mini-mum provides optimum operating comfort for specialists. In addition, inexperienced users can also quickly locate cable faults with a high de-gree of accuracy.

Automatic data recording

All measurements are automatically saved as a database entry. This ensures that no measure-ment results are lost. Comments can be added to the measurements using an on-screen key-board.

A freely defi nable input mask makes it possible to adapt to the internal documentation system of each cable operator. Results can be printed immediately or saved as a PDF fi le to a memo-ry stick using the USB port. Printers can also be connected using the USB port.

Centrix 2.0 05

L1

PE NKBY NKBY PE

8 m 322 m 320 m 10m

220 m

L2

L3

A

B

Cable data

Cable overview

Baunach

Location

Mixed cable run

Cable type

A11

Cable number

6

Uo [kV rms]

Plug on

Terminator

Heat shrink

Terminator

ABB

Manufacturer

ABB

Manufacturer

Air isolated

Substation

Air isolated

Substation

B08

Name

A19

Name

Station A Station B

Cable lenght: 660 m A19B08

Graphic overview of all relevant information and results

Card with cable routing and fault positionCore specifi cations for cable identifi cation

Pre-location

Low-resistance cable faults, breaks or the ca-ble lengths are determined with the integrated pulse refl ectometer (Telefl ex®).

Telefl ex® VX – the most powerfulrefl ectometer worldwide

When using the refl ection measurements, intel-ligent algorithms determine the necessary set-ting parameters and make possible

■ Automatic confi guration of the measurement range

■ Automatic amplifi cation control

■ Automatic measurement of the cable end

■ Automatic measurement of the fault location

06 Centrix 2.0

Unique technologies that inspire

0 km 0,5 km 1,5 km 2,0 km 2,5 km

ProRange

1,0 km

930 mwithout ProRange

with ProRange (25%)

with ProRange (75%)

IFLIFL mode is used for intermittent faults. Using an envelope, even small changes in the impedance curve can be clearly shown.

ICE / decayWith the proven current pulse method (ICE) and for the decay travelling vibration method, the measurement of the fault location is also perfor-med automatically.

ProRangeFor ProRange, the gain is adapted based on the distance. Distant joints, fault locations and cable ends are thus better detected. For cables with high attenuation (long cables, moist mass-imp-regnated cable, crossbonding), this new feature is especially advantageous.

Centrix 2.0 07

ARM® -Plus / Decay-PlusDoppelstoßverfahrenDouble impulse procedureThe patented double impulse procedure was specially developed for high voltage levels and long cables.

First, ignition of an arc is performed at the fault location with high voltage. The duration of the resulting arc is extended by a second discharge from a 4 kV pulse module. The arc is thus optimally stabilised and pre-loca-tion can thus be performed successfully even in diffi cult conditions (oil-fi lled sleeves, humidity in sleeves, long cables) at any time.

For ARM® -Plus:Functional image pulse with 350 V or 1.5 kVFault pattern pulse with up to 32 kV, additional 4 kV

For Decay-Plus:Functional image pulse with 1.5 kVFault pattern pulse with up to 80 kV, additional 4 kV

ARM® live burningFor ARM® live burn down method, the arc bur-ning process can be observed “live” at the fault location using the refl ection measurement. This method is particularly useful for diffi cult faults in oil-fi lled joints.

ARM®-MultishotARM® multi-shot technology makes it possi-ble to display 15 fault patterns per surge pulse. An automated analysis supports the user, imme-diately displaying the best result – a very useful feature, in particular for wet and oil-fi lled joints.

1,0 km

930 m

2,5 km

0,5 km 1,5 km 2,0 km

ARM®-Multishot

0 km

Fault patternFunctional imageARM®-Multishot images

Acoustic pinpointing

High-impedance and intermittent faults are pre-cisely measured with the help of acoustic loca-tion. With controllable voltage levels of 4, 8, 16 and 32 kV, all requirements for low and medi-um voltage networks are covered. An additio-nal, low-noise and wear-free thyristor surge le-vel with 2 kV is available.

Line tracing

The audio frequency system controlled by the system is used to locate cable routes and for ex-act location of cable faults.

The powerful audio frequency generators with up to 200  W transmission power support the patented SignalSelect® process and the capaci-tive step voltage process.

08 Centrix 2.0

Sheath testing and fault location

Sheath testingSheath fault testing on plastic-insulated medi-um-voltage and high-voltage cables can be per-formed up to 20 kV.

Pre-locationWith up to 10 kV output voltage, highly sensi-tive measurement equipment and a fully auto-matic measurement procedure, even high-impe-dance errors in long cables (e.g. offshore) are no problem.

Special features:

■ Bi-polar pre-location technology to eliminate thermoelectric offset voltages and galvanic effects (wet joints)

■ Independent of resistances of shield and conductor as well as auxiliary lines and con-nection clamps

■ Audio frequency output for line tracing 8.44 kHz, 15 W (option)

Pinpoint locationUsing four voltage levels from 5 to 20 kV at the fault location, Centrix 2.0 generates a safe step potential, potential gradient, which can be loca-ted with the help of earthing rods and the ESG NT earth leakage detector.

A wide range of functionality for precise fault location

Centrix 2.0 09

Cable testing and diagnostics

Insulation testAutomatic measurement of insulation resi-stance and the test specimen capacity with up to 1,000 V test voltage.

DC testingDC testing is possible with a  voltage of up to 40 kV (optional 80 kV).

VLF test according to DIN VDE 0276The patented technology of the powerful VLF test attachment makes possible large sample ca-pacities. It is thus possible to simultaneously test all three phases on long cable stretches as well without reducing the test frequency. This provi-des a time saving of two hours.

Alternatively, a VLF sinusoidal test attachment is available: For testing and as a voltage genera-tor for the optional TanDelta diagnostics system (for assessment of age-related condition of MSP cables).

Breakdown phase detection for three-phase testingWith simultaneous measurement of all three phases, it is possible to immediately display the  phase on which a  breakdown occurred. This saves time and protects the cable.

Partial discharge diagnosisThe new 50 Hz slope technology makes possible an accompanying PD diagnosis during commis-sioning testing of MSP cables. The PD diagno-sis is performed during polarity reversal (slope) of the test voltage. The rapid change of polari-ty optimally represents the typical load at 50 Hz mains frequency. With the virtually power-fre-quency load of the test object, the measure-ment parameters such as PD inception voltage, frequency and level can be directly compared with the 50 Hz mains frequency.

Unique testing and diagnostics system: TDM 45

Three voltage shapes in one device

■ VLF sin wave tandelta diagnosis and Monitored Withstand Test, PD diagnosis on short cables

■ VLF CR (50 Hz Slope) Commissioning testing with accompanying PD diagnosis at high test power

■ DAC (Damped AC) non-destructive PD diagnosis on cables that have aged

Other additional equipment

10 Centrix 2.0

Remote controlImportant functions can be controlled remotely. This makes it possible to trigger an emergency shutdown of the system in case of danger, for example. To reduce the load of the cable due to surge pulses, they can be triggered remotely.

Self-contained power supply

■ Synchronous generator 7 kVASuitable vehicle with auxiliary drive necessary.

■ Travel powerElectronic generator 5 KVA.

■ Battery powerBattery-operated self-contained power sup-ply of the measurement system with lithi-um-ion batteries, charge electronics and display unit.

SafetyAn essential part of Centrix 2.0 is the safety sys-tem, which monitors all safety-relevant parame-ters in accordance with current standards.

The following criteria are monitored:

■ Loop resistance: System earth to station earth, auxiliary earth to station earth

■ Step voltage: Earth to the vehicle chassis

■ Fast ramp voltages

■ Rear door switch

■ Safety key switch

■ Internal/external emergency switch (EN 50191)

Separation of operation and protective earth in connection with an isolating transformer en-sures safe earthing conditions.

SafeDischarge technologyA unique feature is the high level of safety pro-vided by a controlled forced discharge of all sys-tem components when an emergency stop is performed or a mains failure occurs. The energy stored in the system is thus no longer dischar-ged into the cable.

Centrix 2.0 11

Cleverly stowed … … and quickly accessible

www.megger.com

GERMANY / AUSTRIAMegger · Dr.-Herbert-Iann-Str. 6 · D-96148 BaunachTel. +49 (0) 95 44 - 680 · Fax +49 (0) 95 44 - 22 73team.dach@megger.com · www.megger.com

SWITZERLANDMegger Schweiz AG · Wallbach 13 · CH-5107 Schinznach-DorfTel. +41 (0) 62 - 768 20 30 · Fax +41 (0) 62 - 768 20 33chanfrage@megger.com · www.megger-swiss.ch

CENTRIX_BR_EN_V01.pdf