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.

Key Features of Fluke 52120A Transconductance Amplifier

• High - Current Output: It can supply up to 100 A of DC current and 120 A of AC current. When using accessory coils, it can generate 3000 A or 6000 A of current. With three 52120As connected in parallel, it can output up to 360 A.

• High - Accuracy Calibration: The accuracy can reach up to 140 ppm, ensuring precise calibration of various high - current working load devices, including power and energy meters, clamp meters, and current transformers.

• Wide Frequency Range: The frequency range is from DC to 10 kHz, meeting the calibration requirements of different frequencies.

• Multiple Operating Modes: It supports parallel operation of 2 or 3 amplifiers up to 360 A in a single - phase, or up to 10 amplifiers and 1200 A in standalone mode. It can also operate in a closed - loop mode, communicating seamlessly with the Fluke Calibration 6105A or 6100B electrical power standard to improve accuracy.

52120A performance at a glance

• Industry-leading amplifier accuracy:

• - 140 ppm ac (used with 61XXA Electrical Power Standard)

• - 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 with 61XXX, 2 or 3 amplifiers, up to 360 A in a single phase

• Parallel operation: Standalone operation, 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

• GPIB remote operation

Technical Specifications

• Input and Output Ranges: The input current ranges are 200 mA, 200 mA, 120 mA (100 mA DC), and the input voltage ranges are 2 V, 2 V, 1.2 V (1.0 V DC). The output ranges are 2 A, 20 A, 120 A (100 A DC), with current gains of 10, 100, 1000, and transconductances of 1, 10, 100 siemens.

• Output Compliance Voltage and Isolation: The output compliance voltage is 4.5 Vrms (6.4 Vp). The output isolation from the current terminal to the ground is 600 Vrms, 850 Vp, DC up to 850 Hz.

• Other Parameters: The operating temperature is 5 °C to 35 °C, and the calibration temperature range is 16 °C to 30 °C. The warm - up time is 1 hour, the power consumption is less than 1500 VA, and the weight is 25 kg.

Design Standards and Compliance

Designed in accordance with EN 61010 - 1:2010, CAN/CSA 22.2 No 61010.1 - 04, ANSI/UL 61010 - 1:2004, and EN 61326 - 1:2006, with CE marking and CSA certification.