VLF sine wave 45 kV Test and diagnostic system for commissioning testing and condition analysis of medium-voltage cables

2021-12-28
●DESCRIPTION
■The VLF sine wave 45 kV with in teg rated tan Delta is a compact, robust, and portable high-performanee test and diagnostic system for medium voltage cables
■The 45 kV tester is a multifunctional tool: apart from VLF and DC testing, it also performs sheath testing and sheath fault pinpointing (in combination with the step voltage probe ESG NT). Moreover, the optional internal tan Delta expa nds the system to assess both cable integrity and condition.
■The smart VLF system automatically adjusts the test frequency to the cable length, making even tests on 25 kV rated cables (up to 25 km) easy and reliable.
Earth loop monitoring and automatic discharge eliminate hazards to the user. The automatic discharge functionality makes the use of an external safety stick no longer necessary.
■In the event of excessive charge current, the integrated breakdown detector shuts down the test voltage, preventing extensive damage to the cable.
■Field operations require no external computer. Equipped with intuitive operating software and a large internal memory, the VLF 45 kV evaluates and stores all data automatically. Via the USB port, datasets can be easily exported and processed for report generation via the PC software MeggerBookRE(ind. in delivery) The user can review all performed measurements either immediately or at a later point in time (internally).
■The well thought-out operating principle combined with simple visual commands guide the user th rough the entire measurement process, keeping training time to a minimum even for advanced cable diagnosis.
■The system can also be used as a voltage source for the optional PD attachement and can be easily expanded to a universal testing and diagnostic system.
●FEATURES
■High test capacity of up to 10 μF
■Continuous test cycle
(testing without operational interruptions)
■AC7DC testing in compliance with DIN VDE, ENJEEE
■Intuitive user software with large internal memory
■Leakage current measurement in DC and VLF rectangular mode
■Optional internal tanDelta with automatic evaluation acc. to IEEE
■Maximum user safety through automatic discharge of the test object and earth loop ground monitoring
■Breakdown detection and load recognition (R, C)
■Quick, easy logging and updates via USB port
■Sheath testing and sheath fault pinpointing acc. to IEC 60229
●Performs cable withstand testing, cable diagnosis and sheath fault pinpointing
●Automatically adjusts the test frequency to the cable length
●Eliminates hazards to the user and prevents extensive damage to the cable
●Easy field operation with no need for external computer

Megger

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2021/08/22

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