52120A Transconductance Amplifier

52120A Transconductance Amplifier

Expand the workload capability of your power and electrical calibrators
The Fluke Calibration 52120A Transconductance Amplifier supplies dc current up to 100 amps and ac current up to 120 amps, at accuracies to 140 ppm. Using accessory coils, it can generate 3,000 or 6,000 amps. Three 52120As connected in parallel can output up to 360 amps. Inductive drive capability of 1 mH and compliance voltage of 4.5 volts support a wide range of applications.

52120A performance at a glance

  • Industry-leading amplifier accuracy:
  • 140 ppm ac (used with 61XXA Electrical Power Standard or 5730A)
  • 350 ppm ac (used with dc/lf calibrator
  • 160 ppm dc (used with dc/lf calibrator
  • Frequency: DC to 10 kHz
  • Burden voltage (compliance): 4.5 V @ 120 A
  • Inductive drive capability: 1 mH load
  • Output ranges: 2 A, 20 A, 120 A
  • Input ranges: 2 V or 200 mA F.S. for 2 A and 20 A ranges, 1.2 V or 120 mA F.S. for 120 A range
  • Parallel operation: (Closed loop mode with 61XXX or 5730A) 2 or 3 amplifiers, up to 360 A in a single phase
  • Parallel operation: (Standalone mode), up to 10 amplifiers, up to 1200 A in a single phase
  • Accessory coils: 25-turn coil supports 3000 A, 50-turn coil supports 6000 A
  • Control communication with 6105A/6100B Electrical Power Standards or 5730A
  • GPIB remote operation



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