2820a - Precision C, L & tan delta (Power Factor) Measuring Bridge

Additional Product Information

Features & Benefits


  • Accuracy capacitance 0.02%, tan  d 1×10-4
  • Additional signal analysis capabilities like Spectrum Analyser, Digital Scope and Data Logger are integrated
  • Advanced, well-engineered test equipment, optimized to the specific application
  • Compact, reliable and EMC hardened design
  • Integrated solution with built-in industrial computer


  • Easy to operate with manual and automated test modes, software assisted test preparation, execution and trend analysis.
  • Complete Measuring System including power supplies, standard capacitors, current comparators, test cells, application support and calibration from one supplier.
  • Wide Application Range. Losses of all types of insulation including shunt reactors under unstable power frequency can be measured.
  • Upgrade – Outdated Tettex bridge models (e.g. 2877, 2801, 2821, etc.) can be easily replaced, with existing cable sets.

Routine and type tests of:

  • Power Cables & Accessories
  • Shunt Reactors
  • Capacitors
  • Liquid or Solid Insulations
  • Instrument Transformers
  • Bushings
  • Reference Laboratories
  • 28xx CAB 10: Cable set, 10 m
  • 28xx CAB 20: Cable set, 20 m
  • 28xx OFFICE: Application software for 2820a/2840 for PC installation
  • 28xx/WE2: Warranty Extenstion to 2 years
  • 28xx/WE3: Warranty Extenstion to 3 years
  • 4762: Range extender, 400 A