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AE Techron 7224RLY Power Amplifier/Current Source

AE Techron 7224RLY Power Amplifier/Current Source is designed to meet the demanding requirements of the power utility industry. Capable of outputting a 40 mSec pulse with up to 52 amperes peak current, the 7224RLY is powerful enough to put protection relays, fuses and other critical components through a full range of tests. The low noise floor, low distortion and minimal phase error of the 7224RLY make it the ideal amplifier for power grid modeling.

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Feature Specification

Up to 50 Ap (35A RMS) output power at 0.5 ohms
Up to 158 Vp output voltage
Standard transconductance of 20 ±0.2% from short to 1-ohm load
Residual noise of less than 2.5 mA peak, from 40 Hz to 600 Hz

Performance
Controlled-Current Bandwidth (0.25Î© load)	DC to 10 kHz
Maximum Output Current (0.5Î© load)	35A RMS (50 Ap)
Maximum Output Voltage	158 Vp
Maximum Output Power	Dependent on load and frequency
Load Constraint for Maximum Output	0.5 ohms + 200 mH (Note: all loads from 8-ohm to short are stable with 2 mH in series)
Output Offset Current	Less than 10.0 mA DC peak
Standard Transconductance (from short to 1Î© load)	20 ±0.2%
Common Mode Rejection Ratio (40 to 600 Hz)	-58 dB minimum
Unit-to-Unit Phase Error (60 Hz)	±0.1 degrees
Residual Noise (40 to 600 Hz)	Less than 2.5 mA peak
Input-to-Output Phase Delay	-0.2 degrees
Out Accuracy	Less than ±1%
Input Characteristics
Balanced with ground	Three terminal barrier block connector, 20k ohm differential
Unbalanced	BNC connector, 10k ohm single ended
Gain (variable or fixed)
Voltage Mode	20 volts/volt
Current Mode	5 amperes/volt
Max Input Voltage	±10V, balanced or unbalanced
Common Mode Rejection	-58 dB with 5V input
Display, Control, Status, I/O
Front Panel LED Displays indicate	Ready, Standby, Fault, Over Temp, Over Voltage, Overload
Soft Touch Switches for	Run, Stop, Reset
Gain Control, when enabled	Voltage gain adjustable from 20 to 0
On/Off Breaker
Back Panel Power Connection	25 Amp IEC (with retention latch)
Signal Output	Three-position terminal strip (OUTPUT/COM/CHASSIS GROUND); resistor between COM and CHASSIS GROUND terminals is a 2.7-ohm, 2W, 5%, metal-oxide resistor
Signal Input	User-selectable BNC or Barrier Strip, Balanced or Unbalanced
Communication Capabilities
Current Monitor	5A/V ± 1%; 2.5A/V ± 1% (differential configuration)
Reporting	System Fault, Over Temp, Over Voltage, Over Load
Remote Control via Interlock Connector	Force to Standby, Reset after a Fault
Protection
Over/Under Voltage	± 10% from specified supply voltage amplifier is forced to Standby
Over Current	Breaker protection on both main power and low voltage supplies
Over Temperature	Separate output transistor, heat sink, and transformer temperature monitoring and protection
Physical Characteristics
Chassis	The Amplifier is designed for stand- alone or rack-mounted operation. The Chassis is black aluminum with a powder coat finish. The unit occupies two EIA 19-inch-wide units.
Weight	41 lbs (18.6 kg), Shipping 51 lbs (23.2 kg)
AC Power	Single phase, 120 VAC, 60 Hz, 20A service; (220-240 VAC, 50-60 Hz, 10A service model available)
Operating Temperature	10°C to 50°C (50°F to 122°F), maximum output Power de-rated above 30°C (86°F)
Humidity	70% or less, non-condensing
Cooling	Forced air cooling from front to back through removable filters.
Airflow	180CFM
Dimensions	19 in. x 22.75 in. x 3.5 in. (48.3 cm x 57.8 cm x 8.9 cm)