Elgar 751B Linear AC Power Source 750VA

The Elgar 751B is a programmable AC power source designed to simulate and test various AC power conditions. It is part of Elgar’s SL and B Series of solid-state linear amplifiers, which convert incoming line power into a stable, low-distortion sine wave. These units are suitable for benchtop or 19-inch rackmount configurations and can be driven by fixed, variable, or programmable plug-in oscillators, or from an external source. The Elgar 751B offers overload and over-temperature protection and can operate continuously at up to 150% of its rated capacity into a linear resistive load for SL series models, while B series models are rated at 100% capacity.

### Technical Specifications

**Output Power:**
* 750 VA

**Output Voltage:**
* Adjustable ranges selectable by jumper change on the rear panel.
* Available ranges include 0-65 VAC, 0-130 VAC, and 0-260 VAC. Consult Elgar for other voltage ranges.

**Output Frequency Range:**
* 45 Hz to 5 kHz at full rated power.
* Optionally expandable to 10 kHz.

**Harmonic Distortion:**
* Typically below 0.3% midband, and below 0.6% over the full frequency range.
* Often specified as better than 0.4%.

**Regulation:**
* **Line Regulation:** ±0.25% at rated load for a ±10% input change at full scale output voltage.
* **Load Regulation:** ±1% from no load to full load over the full frequency range. Adjustable to ±0.1% for specific load conditions and to ±0.015% with a Plug-In Programmer (PIP). For fixed frequency outputs, load regulation is better than ±0.25%.

**Response Time:**
* Less than 2 microseconds
* Also specified as less than 50 µsec in some documentation.

**AC Noise Level:**
* 70 dB below full output voltage with input grounded.

**Continuous Duty Rating:**
* **SL Series:** Continuous duty at 150% of rated capacity into a linear resistive load. SL models are specified at 150% of nominal output current into a linear resistive load.
* **B Series:** Continuous duty at 100% of rated capacity.

**Metering:**
* **SL Series:** 0-300 VAC output voltmeter with ±3% accuracy.
* **B Series:** 0-150 VAC output voltmeter.

**Protection:**
* Overload protection.
* Over-temperature protection.
* Transformer coupled output is protected against overvoltage and overcurrent.

**Input Voltage:**
* 115/208/230 VAC, +10%. (208 VAC may not be available on certain models).
* Power Factor Corrected (PFC) universal input voltage allows maximum power delivery without manual range selection.

**Environmental:**
* **Operating Temperature Range:** 0° to +55°C. (Also specified as -20° to +50°C in some sources).
* **Operating Humidity Range:** Up to 95% non-condensing.

### Interfaces and Control

* **Programmable via IEEE-488 GPIB:** When used with an Elgar Plug-In Programmer (PIP), provides full GPIB control of voltage, frequency, phase angle, voltage dropouts, and test readback of output parameters.
* **Plug-In Programmer (PIP) Compatibility:** Compatible with various Elgar PIP models (e.g., PIP9012A, PIP9023, PIP704) which may offer advanced features like test options for reading RMS voltage, RMS current, frequency, phase angle, and true power in watts.
* **Front Panel Controls:** Includes an input power switch/circuit breaker and pilot light. A full-range, 10-turn output voltage control potentiometer is also present.
* **Range Change Relays:** Optional internal relays can switch between 130 VAC and 260 VAC ranges under GPIB or front panel local control when used with a PIP or modified oscillator.

### Physical

* **Configuration:** Benchtop/19-inch rackmount unit.
* **Height:** Specified as 7 inches for the SL series.

### Compatibility and Options

* **Configurable for Multi-Phase Operation:** SL and B Series components can be used as building blocks for creating a full range of single, dual, and three-phase AC power sources. Series and paralleling capabilities are available.
* **Plug-In Oscillators:** Can be driven by fixed, variable, or programmable plug-in oscillators to control voltage and frequency.
* **Optional Internal Range Change Relay:** Allows for switching between voltage ranges via GPIB or front panel control.

Why Choose Aumictech for the Elgar 751B?
At Aumictech, we specialize in supplying high-end AC power source equipment. Whether you need reliable power simulation, precise control for automated testing, or robust performance for avionics applications, our team ensures the Elgar 751B delivers maximum performance for your application.