LDS-6

The LDS-6 is a highly sophisticated digital measuring system for the Partial Discharge (PD)detection according to the standard IEC 60270, VDE 0434 as well as various IEEE and other standards for the High Voltage Test and Measurement Technology. It meets also ICEA T-24-380 standardof theCable Industry.

• PD quality tests on high voltage equipment
• PD diagnosis on developing insulating materials
• Designed for on-site PD diagnosis tests as well as for manufacturing and research
• PD commissioning tests and maintenance tests on HV equipment
• PD fault location for power cables

Application fields:

• Rotating machines (e.g. motors, generators)
• Transformers
• MV and HV cable systems
• Switchgears (e.g. gas-insulated, air-insulated)
• other HV accessories / insulating materials

• Well-known Lemke Noise Gating Technology. The LDS-6 provides two separate channels for real hardware gating. The noise suppression of external noises happens via a separate antenna (gating sensor). These features are already included in the standard LDS-6 delivery volume. No other units are needed and thus no extra costs will apply.

• Highly-sophisticated PD statistics, diagnosis and analysis software to evaluate the PD in the most convenient and expert manner. The LDS-6 software also includes a comprehensive reference database. This helps to analyze your partial discharge measurement results quickly and easily.

• Well-established technology due to hundreds of LDS-6 systems in daily use. The LDS-6 is thus field-proven and got high acceptance in the industry (e.g. manufacturers, universities, OEM's). Due to its rugged housing and its reliable software, the LDS-6 is the perfect day-to-day tool under all conditions.

• Modular design of the LDS-6 allows a variety of measurements. The LDS-6 is expandable with:
  • RIV pulse processing unit (for transformer testing)
  • UHF processing unit
  • Narrow Band processing unit
  • DC processing unit
  • Cable Fault Location Unit

• The LDS-6 is optimal for HV test set solutions due to its 19" Rack-version and software interface.

• Report generator for creating customized test reports is optional available.

• Sensitivity range: 1pC to 100,000pC (Autoranging 0-93db)
• Upper limited frequency: 20 MHz
• Digital input of signals: 12 bit
• Partial Discharge Location (Reflectometer method, Enhancement of the location sensitivity), optional available
• Computer-based, phase resolved PD data acquisition, storage, analyzing and post-processing
• Simultaneous PD data and test voltage acquisition
• Diagnostic tools for PD failure recognition/statistical data evaluation
• Hardware settings completely software controlled
• Polarity recognition of the PD pulses
• Double pulse resolution 10 ms
• Minimal Superposition error and single pulse recognition capability up to 100 kHz pulse repetition rate
• Ethernet connection between measuring system and computer
• UHF-Frequency Range, bandwith 110MHz - 1700 MHz, optional available

Accesories for all application fields:

• LDC-5 - Calibrator for external calibration of the PD measuring circuit in pC of apparent charge up to 500 pC

• LDM-5 orLDM-5/U - Measuring impedance for signal and test voltage decoupling (bandwidth 20 MHz, maximum current 5 A, optional 50 A)

• LDB-5 - Bridge impedance for PD detection on the basis of balanced bridge (IEC 60270)
  
• LDF-5 - Filter for suppression of radio interferences

• LDM-5/E - Extension unit for matching the voltage measuring adjustment of LDM-5/U to several ranges and different coupling capacitors

• LDM-5/M6 - Switching box for channel switching of the PD- and voltage channels (software-controlled), more channels on request available

Accessories for measurements on cables:

• HFCT Sensors
• PD Fault Location Unit (Reflectometry method)

Accessories for measurements on rotating machines:

• PDDC-24 for decoupling PD pulses (with integrated measuring impedance and high-voltage fuse)
• PDDC-17 for decoupling PD pulses (with integrated measuring impedance)
• calibrator LDJ-5 with higer pulse charges

Accessories for measurements on transformers:

• Measuring Adaptor LDM-6/U: PD Measuring Impedance with voltage decoupling for power transformer bushings
• Measuring impedance LDM-5/U5 with add. 2 switches for 4 Cu's
• Software Automation "LDC-TR"

• Prospect LDS-6