8508

DC-50kHz Switch-Mode Amplifier

8508

8 kW (up to 100 kVA), up to 400A continuous, three-phase

Key Performance Capabilities:

Bandwidth: DC to 50 kHz
Voltage: 0 to 260 V_RMS; 0 to 400 VDC
Slew rate: Up to 60 V/µs
Current: Up to 160 A_RMS*
Distortion: <0.2%
Power: 8 kW*
Power levels up to 5X rated power when driving reactive loads
High power efficiency and density

*Models available with output power from 4 kW to 24 kW (capable of up to 100 kVA).

SKU: N/A Category: Amplifiers

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OVERVIEW

8508 amplifiers are 400Vp, low-noise, DC-to-50-kHz switch-mode amplifiers. 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. 1.1 Features Wide Bandwidth and Flexible The 8508 amplifier is capable of reproducing AC, DC and AC+DC waveforms into loads from a dead short to high impedance. It can be used to simulate a battery at 13.5 VDC or be an AC source with a L-N potential of up to 140 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 260 VRMS are available with no changes in configuration.

The 8508 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 8508 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 10 kVA+ output while drawing less than 8 kW of AC mains power.

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: Correction to voltage drops to the load

OUTPUT CHART

Output

CONTINUOUS AC OUTPUT CURRENT							CONTINUOUS DC OUTPUT CURRENT*
VOLTS RMS	8504	8508	8512	8516	8520	8524	VOLTS DC	8504	8508	8512	8516	8520	8524
60	60	120	180	240	300	360	13.5	80	160	240	320	400	480
120	32	64	96	128	160	192	24	80	160	240	320	400	480
230	10	20	30	40	50	60	48	75	150	225	300	375	425

Note: 8504 power ratings shown are for unit configured for 240VAC. At output voltages above 90VAC, units configured for 120VAC mains input may be breaker limited. Contact AE Techron for 120VAC performance ratings. Performance data is for a purely resistive load; performance will be improved into loads that are partially or completely reactive.

PERFORMANCE

SPECIFICATIONS

Performance Specifications

Operating Modes: AC, DC and AC + DC
Frequency, AC Mode Output (-3 dB): DC – 50 kHz
Max Voltage Ranges (no load):
- AC: 0 – 260 VRMS
- AC + DC: 0 – ±400 VP
Max Continuous Output Current: 160A RMS
Surge Rating: 2X power at up to 400Vp or 300A
Apparent Power Rating: Up to 5X continuous power rating at up to 400 Vp or 300A
Supply Voltage: Three-phase, 208V ±10%, 30A, 50/60 Hz; 400V ±10%, 30A version available
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 sense line
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: <0.2%
Voltage Slew Rate: Load dependent; up to 60V per µs, typically 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: 3/8-inch high-current post connectors

Operating Environment

Temperature: 5 °C to 50 °C (41 °F to 122 °F);
- Maximum output power derated above 30 °C (86 °F)
Humidity: Maximum relative humidity 80% for temperatures up to 31 °C decreasing linearly to 50% relative humidity at 40 °C
Altitude: 3000 m Maximum
Environment: Indoor Use Only, Pollution degree 2
Equipment Class: Group 1 Class A
Transient Overvoltage: Overvoltage Category II
Dimensions (HxWxD): 35.05 x 22.56 x 31.56 inches (89.03 x 57.3 x 80.16 cm)
Weight (approx): 290 lbs. (131.5 kg)