7224 amplifier


Up to 200Apk current source, ideal for protection relay production testing and commissioning.

The 7796RLYwas created to meet the demanding requirements of the power utility industry. Capable of outputtingup to 200 amperes peak current, the 7796RLY is powerful enough to put protection relays, fuses and other critical components through a full range of tests. It is capable of a controlled-voltage bandwidth of DC - 100 kHz and a controlled-current bandwidth of DC - 10 kHz. The low noise floor, low distortion and minimal phase error of the 7796RLY make it the ideal amplifier for power grid modeling.


  • High compliance voltage allows the 7796RLY to drive electromechanical relays directly.
  • Maintains phase accuracy for any load from a dead short to 0.25 ohms.
  • Capable of a controlled-voltage bandwidth of DC – 100 kHz, and a controlled-current bandwidth of DC – 10 kHz.
  • Front panel indicators for rapid assessment of amplifier status.
  • Designed to survive input overloads, continuous operation under demanding conditions and improper output conditions – including improper loads.
  • Shipped ready to operate from three-phase, 208 VAC (±10%) 47-60 Hz, 30A service. 400 VAC (±5%), 15A model available on request.
  • Installs in a standard 19-inch rack; or stands alone for bench-top operation.
  • Backed with AE Techron’s application engineering, service facilities, complete technical information and a 1-year warranty.



Pulse/Burst Specifications



0.19 ohms 1 minute 60 Hz Sine 125A rms / 176A peak
DC 60A peak
0.5 second 60 Hz Sine 141A rms / 200A peak
DC 188A peak
0.2 second 60 Hz Sine 141A rms / 200A peak
DC 188A peak
0.53 ohms 1 minute 60 Hz Sine 91A rms / 128A peak
DC 100A peak
0.5 second 60 Hz Sine 137A rms / 193A peak
DC 164A peak
0.2 second 60 Hz Sine 139A rms / 196A peak
DC 164A peak
1.07 ohms 1 minute 60 Hz Sine 75A rms / 107A peak
DC 66A peak
0.5 second 60 Hz Sine 83A rms / 118A peak
DC 108A peak
0.2 second 60 Hz Sine 85A rms / 120A peak
DC 108A peak


Frequency Data

7224 Voltage Potential vs. Frequency



At 1V input, 20A output, amplifier transconductance set to 20.


Input Signal


1 kHz
100 Hz
2 ohms Sine 19.9 20
1 ohm Sine 20 20
1/2 ohm Sine 20 20
Short (unimpeded wire) Sine 20 20

Physical Characteristics

Indicators and Controls

Front Panel7796 amplifier front panel controls

LED Displays Indicate: Ready, Standby, and Fault Conditions in the output stage

LCD Display: Lists type of Fault Condition and gives suggested corrective action; User-configurable for up to four simultaneous displays reporting, one, two or all four of the following: Voltage Peak, Voltage RMS, Current Peak, and Current RMS

Soft Touch Switch: Places amplifier in Run or Standby mode

Back Panel

Signal Output: +/Common/Sampled Common

Signal Input: User Selectable BNC or Barrier Strip, Balanced

7548 amplifier back panelCommunication Capabilities

Current Monitor: +/- 1V / 20A +/- 1%

Input Signal Monitor: +/- 1V / 2V +/- 1%

Reporting: System Fault, Over Temp, Over Voltage, Over Load

Control: Force to Standby, Reset after a Fault

Physical Characteristics

Chassis: Black, all-aluminum chassis is designed for stand-alone or rack-mounted operation. The unit occupies five EIA 19-inch-wide units.

Weight: 160 lbs (72.5 kg)

AC Power: Three phase, 208 VAC (±10%), 47-60 Hz, 30A AC Service (400 VAC (±10%), 15A version available)

Cooling: Internal forced-air fans, 250 cfm.

Dimensions: 19 in. x 22.8 in. x 12.25 in. (48.3 cm x 57.8 cm x 31.1cm)