8500 Series: 4 kW to 20 kW (up to 125 kVA), up to 500A continuous, single-phase and three-phase

8504 ampliifer

8500 Series

The First Wide-Bandwidth,
High-Power Digital Amplifiers

AE Techron’s 8500 Series amplifiers are the first (and only) wide-bandwidth, high-power digital amplifiers available from any manufacturer. An 8500 series amplifier has a collection of advantages: wide bandwidth, very low noise, high efficiency and the ability to safely drive a wide variety of load types and impedances.

Key Performance Capabilities:

  • Bandwidth: DC to 50 kHz
  • Voltage: 0 to 250 VRMS; 0 to 350 VDC
  • Current: 60 to 300 ARMS
  • Distortion: 0.1%
  • Power: 4 kW to 20 kW*
  • Power levels up to 5X rated power when driving reactive loads
  • High power efficiency and density

*Models available with output from 4 kW to 20 kW (capable of up to 100 kVA).

Introducing the 8500 Series

 


Flexible and Powerful
The 8500 Seriesof amplifiers are very signal- and application-versatile, able to reproduce AC, DC and AC+DC wave forms at rated power into loads from a dead short to high impedance without re-configuring or selecting different operational modes.

8500 series amplifiers pack a lot of power into a small package. They are able to produce surge power ratings at up to 2.5X continuous and process apparent power at levels up to 5X the continuous power ratings. This makes an 8500 series amplifier an ideal choice for many difficult-to-drive reactive loads.

This combination of abilities, flexibility, and ease-of-use makes 8500 series amplifiers a singular solution for many common and some previously unsolvable amplifier applications. 8500 series amplifiers can be used for EMC conducted immunity testing, MIL-PRF capacitor tests, DC automotive dropout testing and as a variable AC source for ISO 61000, Aviation and Power Quality Measurements.

The 8500 Advantage
Unlike tradition switch-mode amplifiers with a ripple frequency between 80 kHz and 100 kHz, the 8500 series has an effective switch frequency of 1 MHz. This ultra-high-frequency switching gives the 8500 amplifier many benefits over both linear (dissipative) amplifiers and traditional switch-mode amplifiers.

Bandwidth: The first and most obvious benefit from a higher switching frequency is wider bandwidth. The 8500 is the only high-power switch-mode amplifier with a bandwidth that extends to 50 kHz.

Smaller output filter: Switch-mode amplifiers, as a part of their basic design, have high-frequency, high-voltage switching at the heart of their operation. The last stage in any switch-mode amplifier is the low-pass filter that removes the high-frequency switching-noise artifacts from the output signal. Increasing the effective switching frequency by a factor of 10 allows us to reduce the size of these large L-C components used to create this low-pass filter by a similar amount, reducing amplifier size and cost.

Lower magnitude, higher frequency ripple noises: The reduction in output filter component size also makes it easier to implement more complex, higher-order low-pass filters, to greatly reduce output ripple noise. The 8500 series uses this advantage to create output voltages of up to 400 Vp with 1 MHz ripple noises that are less than 2 Vp, with in-band noise specifications similar to low-noise linear amplifiers. If even lower noise floors are needed, simple, small, external filtering can reduce this noise even further.

Optimized for transient waveforms and reactive loads: The 8500 Series of amplifiers are compact and capable. They are able to drive purely resistive loads, at rated power, continuously, but really excel when it comes to reproducing short-duration waveforms and/or driving reactive loads.

For periods of up to one minute, the 8500 series amplifier can exceed continuous power ratings by as much as 2.5X. When the load to be driven is reactive, and most of the energy sent into the load is returned to the amplifier, the 8500 can reuse this returned energy to produce apparent power levels that are as much as 5X that of the amplifier’s continuous power ratings.

Scalable: The 8500 Series is scalable, available in power levels from a 4 kW, 3U, single-phase, bench top model to mini rack systems that can deliver up to 100 kVA of power into reactive loads at currents of up to 300 ARMS.

Configurable
A key to everyday product usability is quick and easy product (re)configuration. The 8500 Series provides all key configuration controls on the back panel of the unit. Configuration options available include:

  • GAIN: Fixed or variable gain (0 to 40)
  • CURRENT LIMIT: From 5% to rated limit (to protect fragile DUTs or where specified in the Standard)
  • DC CONTROL: DC enabled or DC blocked and DC Servo (for driving transformer-coupled loads or coils)
  • INPUT: Balanced and/or unbalanced
  • MODE: Voltage source or current source
  • OUTPUT IMPEDANCE: Variable from 0 to 1 ohm (Voltage mode)
  • SENSE: Sense line with correction of up to 4 volts

Models

8504 amplifier

8504

Max Continuous Output Current: 100A
Surge Rating: 2X power or up to 400 VP, 150A
Apparent Power Rating: Up to 5X continuous power rating or up to 400 VP, 150A
Supply Voltage: Single-phase, 230V/240V*, 30A, 50/60 Hz
Dimensions (HxWxD): 5.25 x 19.0 x 25.26 in. (13.34 x 48.26 x 64.16 cm)
Weight: 84 lbs. (38.1 kg)

 

8508 amplifier

8508

Max Continuous Output Current: 200A
Surge Rating: 2X power or up to 400 VP, 300A
Apparent Power Rating: Up to 5X continuous power rating or up to 400 VP, 300A
Supply Voltage: Three-phase, 208V ±10%, 30A, 50/60 Hz; 400V ±10%, 15A version available. .
Dimensions (HxWxD): 36.5 x 21.0 x 30.75 inches (92.7 x 53.3 x 78.1 cm)
Weight: Appx. 290 lbs. (131.5 kg)

8512 amplifier

8512

Max Continuous Output Current: 300A
Surge Rating: 2X power or up to 400 VP, 450A
Apparent Power Rating: Up to 5X continuous power rating or up to 400 VP, 450A
Supply Voltage: Three-phase, 208V ±10%, 30A, 50/60 Hz; 400V ±10%, 15A version available.
Dimensions (HxWxD): 36.5 x 21.0 x 30.75 inches (92.7 x 53.3 x 78.1 cm)
Weight: Appx. 370 lbs. (167.8 kg)

8516 amplifier

8516

Max Continuous Output Current: 400A
Surge Rating: 2X power or up to 400 VP, 600A
Apparent Power Rating: Up to 5X continuous power rating or up to 600 VP, 300A
Supply Voltage: Three-phase, 208V ±10%, 60A, 50/60 Hz; 400V ±10%, 15A version available.
Dimensions (HxWxD): 36.5 x 21.0 x 30.75 inches (92.7 x 53.3 x 78.1 cm)
Weight: Appx. 460 lbs. (208.7 kg)

8520 amplifier

8520

Max Continuous Output Current: 500A
Surge Rating: 2X power or up to 400 VP, 750A
Apparent Power Rating: Up to 5X continuous power rating or up to 400 VP, 750A
Supply Voltage: Three-phase, 208V ±10%, 60A, 50/60 Hz; 400V ±10%, 15A version available.
Dimensions (HxWxD): 36.5 x 21.0 x 30.75 inches (92.7 x 53.3 x 78.1 cm)
Weight: Appx. 540 lbs. (244.9 kg)

*Other voltages available. Contact AE Techron for details.

Output

 

Note: Higher voltages possible with optional step-up transformer.

 

CONTINUOUS AC OUTPUT CURRENT

VOLTS RMS 8504 8508 8512 8516 8520
120 33 66 99 132 165
230 17 34 51 68 85
277 14 28 42 56 70
CONTINUOUS DC OUTPUT CURRENT
VOLTS DC 8504 8508 8512 8516 8520
13.5 50 100 150 200 250
28 50 100 150 200 250
42 50 100 150 200 250

Performance

8500 Series Voltage vs. Current

Common Data (all models)

Operating Modes: AC, DC and AC + DC
Frequency, AC Mode Output (-3 dB): DC - 50 kHz
Max Voltage Ranges (no load),
   AC:
0 - 277 VRMS
   AC + DC: 0 - ±400 VP
Load Regulation (full scale): <0.025%, DC to 100 Hz; <0.05%, 10 Hz to 10 kHz
Line Regulation (full scale): <0.1% for 10% line change
External Sense: Voltage-drop compensation (up to ±4 VP)
Harmonic Distortion (80 kHz, low-passed): Less than 0.3% from 10 Hz to 30 kHz; 0.5% up to 50 kHz

Harmonic Distortion (30 kHz, low-passed): Less than 0.1% from 10 Hz to 50 kHz
DC Offset: <10 mV
Distortion: <1.0%
Voltage Slew Rate: Load dependent; up to 60V per µs, typically 10 µs to 30 µsfor 10% to 90% of full-scale change depending on load and power
Efficiency: 85%, typical
Power Factor: .72, typical
Source Impedance: 3 mΩ + 3 µH
Cooling: Internal forced-air fans
Protection: Over/under voltage, over current, over temperature

Input, Signal In,
   Unbalanced:
BNC connector
   Balanced: Terminal strip
Output: High-current connectors
Operating Environment,
   Temperature:
10°C to 50°C (50°F to 122°F);
   Maximum output power derated above 30°C (86°F)
   Humidity: 70% or less, non-condensing
   Atmospheric Pressure: 86 kPa (860 mbar)
   to 106 kPa (1,060 mbar)

Controls, Indicators, and Connectors

8504 Front Panel
8504 Back Panel

Downloads

8500 Series Datasheet

Complete technical specifications

 

 

 

 

 

 

 

 

 

 

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