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

8500 Series
The First Wide-Bandwidth,
High-Power Digital Amplifiers
AE Techron’s 8500 Series amplifiers are the first wide-bandwidth, high-power digital amplifiers available from any manufacturer. They are fast enough for DC automotive dropout testing and capable of AC voltages required for ISO 61000 and Aviation testing. Plus, they have low enough noise and distortion specifications to be the reference power source in power quality measurements.
Key Performance Capabilities:
- Bandwidth: DC to 50 kHz
- Voltage: 0 to 250 VRMS; 0 to 350 VDC
- Current: 100 to 500 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 125 kVA).
Wide Bandwidth and Flexible
The 8500 Series of amplifiers are capable of reproducing AC, DC and AC+DC waveforms into loads from a dead short to high impedance. They can be used to simulate a battery at 13.5 VDC or be an AC source with a L-N potential of up to 250 VAC. Rated current, for a given voltage, is available for all waveform types (AC, DC or AC+DC) at frequencies from DC to 50 kHz. Voltages from 0 to 250 VRMS are available with no changes in configuration.
Reuses Energy from Reactive Loads
The 8500 Series excels when it comes to driving reactive loads. As frequencies increase, the effective-impedance of the load becomes a much larger part of the total load to be driven (especially with inductive loads like coils). However, when driving reactive loads, the 8500 Series is capable of receiving, reprocessing and returning to the load up to 5X its rated power. The result is a bench top system capable of 20 kVA+ output while drawing less than 4 kW of AC mains power!
Scalable
The 8500 Series is scalable, available in sizes from a 3U, single-phase, bench top model to mini rack systems that can deliver up to 125 kVA of power into reactive loads at currents of up to 500 ARMS.
Configurable
A key to everyday product usability is quick and easy
product (re)configuration. The 8500 Series provides all key configuration controls on either the front or back panels 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
Introducing the 8500 Series
Models

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 220/230V ±10%
Dimensions (HxWxD): 5.25 x 19 x 25.26 in. (613.34 x 48.26 x 64.16 cm)
Weight: 84 lbs. (38.1 kg)

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%
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
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%
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
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%
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
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%
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)
Output
Note: Higher voltages possible with optional step-up transformer.
CONTINUOUS AC OUTPUT CURRENT |
|||||
VOLTS RMS | 8405 | 8508 | 8512 | 8516 | 8520 |
120 | 30 | 60 | 90 | 120 | 150 |
230 | 15 | 30 | 45 | 60 | 75 |
277 | 13 | 26 | 39 | 52 | 65 |
CONTINUOUS DC OUTPUT CURRENT |
|||||
VOLTS DC | 8405 | 8508 | 8512 | 8516 | 8520 |
13.5 | 100 | 200 | 300 | 400 | 500 |
28 | 100 | 200 | 300 | 400 | 500 |
42 | 85 | 170 | 255 | 340 | 425 |
Performance

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: 10 µs to 30 µs for 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


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