8720
8720
AE Techron
DC-250kHz Switch-Mode Amplifier
20 kW (up to 120 kVA), up to 400A continuous, three-phase
8720 amplifiers are 400Vp, low-noise, DC-to-250-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. The 8720 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 250 kHz. Voltages from 0 to 260 VRMS are available with no changes in configuration.
The 8720 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 8720 is capable of receiving, reprocessing and returning to the load up to 4X its rated power. The result is a bench top system capable of 10 kVA+ output while drawing less than 20 kW of AC mains power.
Key Performance Capabilities:
- Bandwidth: DC to 250 kHz
- Voltage: 0 to 250 VRMS; 0 to 350 VDC
- Slew rate: Up to 300 V/µs
- Current: Up to 300 ARMS*
- Distortion: <0.8%
- Power: 20 kW*
- Power levels up to 4X 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 96 kVA).
Click below to request a quote for this item. Or for product advice, stock and lead time enquiries call our team on 0330 313 3220.
| Attribute | Value |
|---|---|
| Manufacturer | Bird |
| Protection | Over/under voltage, over current, over temperature |
| Bandwidth | DC – 250 kHz |
| Source Impedance | 2.7 mΩ + 1.25 µH |
| Supply Voltage | Three-phase, 208V ±10% 60A, 50/60 Hz, 400V ±10%, 60A version available |
| Cooling | Internal forced-air fans |
| Output | 3/8-inch high-current post connectors |
| Operating Environment |
Temperature: 5 °C to 50 °C (41 °F to 122 °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): 42.05 x 22.56 x 31.56 inches (106.81 x 57.3 x 80.16 cm) Weight (approx): 540 lbs. (244.9 kg) |
| Operating Modes | AC, DC and AC + DC |
| Max Voltage Ranges |
|
| Maximum Output Current | 300A RMS |
| Surge Rating | 2X power at up to 400Vp or 750A |
| Apparent Power Rating | Up to 4X continuous power rating at up to 400 Vp or 750A |
| Load Regulation | <0.025%, DC to 100 Hz; <0.05%, 10 Hz to 10 kHz |
| Line Regulation | <0.1% for 10% line change |
| External Sense | Voltage-drop compensation sense line |
| Total Harmonic Distortion (THD) |
|
| DC Offset | <10 mV |
| Distortion | <0.8% |
| Slew Rate | Load dependent; up to 300V per µs, typically 8 µs for 10% to 90% of full-scale change depending on load and power |
| Efficiency | 85%, typical |
| Power Factor | .72, typical |
| Input Characteristics |
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| Attribute | Value |
|---|---|
| Data Sheet | Click here to view |
