NEW. The new Centrix 2.0 sets the standard for testing, diagnosis and fault location of power cables.
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- Blaise Cummings
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1 The new Centrix 2.0 sets the standard for testing, diagnosis and fault location of power cables. NEW 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
2 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 accompanying 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
3 10 good reasons for Centrix 2.0 Centrix 2.0 sets new standards regarding user friendliness and performance: System control based on Linux for the highest level of stability and security for the future Intuitive easygo operation using the 21.5 touch display and JogDiall Step-by-step operator guidance for inexperienced users Automatic storage and data recording in the history database Decay plus double impulse procedure up to 80 kv ARM live burning Highest level of safety standard with SafeDischarge technology Simultaneous inspection and diagnosis with new 50 Hz slope technology Li-ion battery-power supply for the measurement system Remote control of important system functions for fault location that is gentle to the cables Test van concepts from Megger tailored to the specifications of the customer Centrix
4 System control made simple 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 hardware 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 expensive antivirus programs and all completely free and without the need for licenses. ion rat e op Kn Touch dis pla y Strict separation of system control and office application along with graphic information systems (GIS) ensure optima system stability and security. On an optional additional monitor, office applications, the database software or the GeoMap software can be displayed. ob 04 e op on r a ti Centrix 2.0
5 Centrix 2.0 thinks ahead The system permanently determines the optimal measurement parameters for the corresponding operating mode. The next, logical operating step is automatically preselected by the system and the user only needs to confirm it, simply and directly! If necessary, fine adjustments can be made manually at any time. Reduction of the operating elements to a minimum provides optimum operating comfort for specialists. In addition, inexperienced users can also quickly locate cable faults with a high degree of accuracy. Automatic data recording All measurements are automatically saved as a database entry. This ensures that no measurement results are lost. Comments can be added to the measurements using an on-screen keyboard. A freely definable 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 file to a memory stick using the USB port. Printers can also be connected using the USB port. Core specifications for cable identification Card with cable routing and fault position Cable data Cable number A11 Location Baunach U o [kv rms] 6 Cable type Mixed cable run A Station A Name B08 Station B Name A19 Substation Air isolated Manufacturer ABB Terminator Plug on Substation Air isolated Manufacturer ABB Terminator Heat shrink B Cable overview PE NKBY NKBY PE L1 L2 220 m L3 8 m 322 m 320 m 10m B08 Cable lenght: 660 m A19 Graphic overview of all relevant information and results Centrix
6 Unique technologies that inspire Pre-location Low-resistance cable faults, breaks or the cable lengths are determined with the integrated pulse reflectometer (Teleflex ). Teleflex VX the most powerful reflectometer worldwide When using the reflection measurements, intelligent algorithms determine the necessary setting parameters and make possible Automatic configuration of the measurement range Automatic amplification control Automatic measurement of the cable end Automatic measurement of the fault location IFL IFL mode is used for intermittent faults. Using an envelope, even small changes in the impedance curve can be clearly shown. ICE / decay With the proven current pulse method (ICE) and for the decay travelling vibration method, the measurement of the fault location is also performed automatically. ProRange For 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-impregnated cable, crossbonding), this new feature is especially advantageous. without ProRange with ProRange (25%) with ProRange (75%) 930 m 0 km 0,5 km 1,0 km 1,5 km 2,0 km 2,5 km ProRange 06 Centrix 2.0
7 ARM -Plus / Decay-Plus Doppelstoßverfahren Double impulse procedure The 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-location can thus be performed successfully even in difficult conditions (oil-filled sleeves, humidity in sleeves, long cables) at any time. ARM live burning For ARM live burn down method, the arc burning process can be observed live at the fault location using the reflection measurement. This method is particularly useful for difficult faults in oil-filled joints. ARM -Multishot ARM multi-shot technology makes it possible to display 15 fault patterns per surge pulse. An automated analysis supports the user, immediately displaying the best result a very useful feature, in particular for wet and oil-filled joints. For ARM -Plus: Functional image pulse with 350 V or 1.5 kv Fault pattern pulse with up to 32 kv, additional 4 kv For Decay-Plus: Functional image pulse with 1.5 kv Fault pattern pulse with up to 80 kv, additional 4 kv 930 m Fault pattern Functional image ARM -Multishot images 1,0 km 2,5 km 0 km 0,5 km 1,5 km 2,0 km ARM -Multishot Centrix
8 A wide range of functionality for precise fault location Sheath testing and fault location Sheath testing Sheath fault testing on plastic-insulated medium-voltage and high-voltage cables can be performed up to 20 kv. Pre-location With up to 10 kv output voltage, highly sensitive measurement equipment and a fully automatic measurement procedure, even high-impedance 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 connection clamps Audio frequency output for line tracing 8.44 khz, 15 W (option) Acoustic pinpointing High-impedance and intermittent faults are precisely measured with the help of acoustic location. With controllable voltage levels of 4, 8, 16 and 32 kv, all requirements for low and medium voltage networks are covered. An additional, low-noise and wear-free thyristor surge level with 2 kv is available. Line tracing The audio frequency system controlled by the system is used to locate cable routes and for exact location of cable faults. The powerful audio frequency generators with up to 200 W transmission power support the patented SignalSelect process and the capacitive step voltage process. Pinpoint location Using 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 located with the help of earthing rods and the ESG NT earth leakage detector. 08 Centrix 2.0
9 Cable testing and diagnostics Insulation test Automatic measurement of insulation resistance and the test specimen capacity with up to 1,000 V test voltage. DC testing DC testing is possible with a voltage of up to 40 kv (optional 80 kv). VLF test according to DIN VDE 0276 The patented technology of the powerful VLF test attachment makes possible large sample capacities. It is thus possible to simultaneously test all three phases on long cable stretches as well without reducing the test frequency. This provides a time saving of two hours. Partial discharge diagnosis The new 50 Hz slope technology makes possible an accompanying PD diagnosis during commissioning testing of MSP cables. The PD diagnosis is performed during polarity reversal (slope) of the test voltage. The rapid change of polarity optimally represents the typical load at 50 Hz mains frequency. With the virtually power-frequency load of the test object, the measurement parameters such as PD inception voltage, frequency and level can be directly compared with the 50 Hz mains frequency. Alternatively, a VLF sinusoidal test attachment is available: For testing and as a voltage generator for the optional TanDelta diagnostics system (for assessment of age-related condition of MSP cables). Breakdown phase detection for three-phase testing With 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. 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 Centrix
10 Other additional equipment Self-contained power supply Synchronous generator 7 kva Suitable vehicle with auxiliary drive necessary. Travel power Electronic generator 5 KVA. Battery power Battery-operated self-contained power supply of the measurement system with lithium-ion batteries, charge electronics and display unit. Safety An essential part of Centrix 2.0 is the safety system, which monitors all safety-relevant parameters 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 ensures safe earthing conditions. SafeDischarge technology A unique feature is the high level of safety provided by a controlled forced discharge of all system components when an emergency stop is performed or a mains failure occurs. The energy stored in the system is thus no longer discharged into the cable. Remote control Important 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. 10 Centrix 2.0
11 Cleverly stowed Centrix 2.0 and quickly accessible 11
12 GERMANY / AUSTRIA Megger Dr.-Herbert-Iann-Str. 6 D Baunach Tel. +49 (0) Fax +49 (0) team.dach@megger.com SWITZERLAND Megger Schweiz AG Wallbach 13 CH-5107 Schinznach-Dorf Tel. +41 (0) Fax +41 (0) chanfrage@megger.com CENTRIX_BR_EN_V01.pdf
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