AE Techron 7548 Power Amplifier DC – 100 kHz 12kW

Description

AE Techron 7548 Power Amplifier DC – 100 kHz 12kW is a DC-enabled, high-powered unit designed to provide very low noise and fast slew rates. A single 7548 has an output capability of 100 amperes peak and 200 volts peak when driving typical MRI gradient coil loads. It can output a 40 mSec pulse with up to 105 amperes peak current into a 1- ohm load. If more current is needed, up to four amplifiers can be combined in series or parallel and operate as a single system.

The 7548 can operate in either voltage or current mode and features robust output devices and a power range of over 3300 watts RMS. It can safely drive a wide range of resistive, inductive loads.

Typical use includes as a power source for EMC testing in applications that require both continuous AC or DC signals and significant short term (burst) signals. It can be combined in a three-phase system ideal for MIL-STD- 704F (AC and 28 VDC tests).

Features

Over 12,000 watts peak for 40 mSec and 5,500 watts peak continuous into a 1-ohm load
40 mSec pulses of up to 105 amperes peak into a 1-ohm load.
Frequency bandwidth of DC to 50 kHz at rated power; DC to 100 kHz at reduced power
Continuous system output of 800 Vp and 170 Ap maximum are possible with multiple, interconnected amplifiers

Download Data Sheet

Specifications

AC Specification
Frequency Response		DC – 30 kHz, +0.1, –0.5 dB
8 ohm Power Response	DC-40 kHz	± 180 Vpk
	DC-50 kHz	± 150 Vpk
	DC-150 kHz	± 50 Vpk
	DC-200 kHz	± 25 Vpk
Maximum Continuous Output Power		3300 watts RMS
Power Sinking		1.2 kVA at 120VAC
Slew Rate		41 V/μSec
Phase Response		± 5 degrees (10 Hz – 10 kHz)
Unit to Unit Phase Error		+/- 0.1 degrees at 60Hz
Output Offset:	7548	Less than 5 mV, field adjustable to less than 1 mV
	7548P	Less than 200 μV
Output Offset Current		Less than 10 mill amperes DC
DC Drift	7548	±1.5 mV
	7548P	± 400 μV (from cold to maximum operating temperature); ±200 μV (after 20 minutes of operation)
Residual Noise	Unfiltered	Less than 75 μV
	Filtered	(400 Hz – 30 kHz): Less than 55 μV
THD		DC – 30 kHz less than 0.1%
Input Characteristics
Balanced with ground		Three terminal barrier block connector 20 k ohm differential
Unbalanced		BNC connector, 10 k ohm single ended
Gain	Voltage Mode	20 volts/volt
	Current Mode	20 amperes/volt
Max Input Voltage		± 10 V balanced or unbalanced
Input Impedance		20 kOhm differential
Input Sensitivity		3.0V input for 3800W output into 1 ohm (adjustable)
Common Mode Rejection Range		± 11 VDC maximum
Common Mode Rejection Ratio		70 dB
Display, Control, Status, I/O
Front Panel LED Displays indicate		Run, Ready, Standby, Stop, and Fault conditions in the output stage
LCD Display		Lists type of fault condition and gives suggested corrective action
Soft Touch Switches for		Run (Enable), Stop, Reset
User Configurable		LCD display can be configured for up to four simultaneous displays reporting one, two or all four of the following: Voltage Peak, Voltage RMS, Current Peak, and Current RMS
Back Panel
Power Connection		NEMA-style locking receptacle; matching AC connector also included
Signal Output		4-position terminal barrier block
Signal Input		User-selectable Unbalanced BNC or Balanced Barrier Strip
Interlock Connector		25-pin D-sub connector used for amplifier control and status applications; also used in multi-amplifier applications
Communication Capabilities
Current Monitor		± 1V / 20A ±1%
Voltage Monitor		± 1V / 1V ±1%
Reporting		System Fault, OverTemp, Over Voltage, Overload
Control		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		Black powder-coat chassis with all aluminum construction; designed for stand-alone or rack-mounted operation. The amplifier occupies five EIA 19-inch-wide rack units
Weight		103 lbs. (46.7 kg)
AC Power		Three-phase, 208 VAC ±10%, 47-60 Hz, 20A AC service (400 VAC ±10%, 15A version available). A toggle switch circuit breaker opens all legs of the AC mains on excess current demand.
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 via four 100 ft3/min. fans. No space is required between rack-mounted amplifiers. Air filters are removable from the rear via one fastener per side and may be eliminated if cabinet filtration is provided.
Dimensions		19 in. x 22.8 in. x 8.75 in. (48.3 cm x 57.9 cm x 22.3 cm). Unit occupies five EIA 19-inch-wide rack units.