Elgar 501A Linear AC Power Source 500VA

The Elgar 501A is a 500 VA AC power source designed for precision testing and power applications. It offers programmable AC power with controlled voltage and frequency, enabling the simulation of various AC line conditions. This unit is suitable for testing electronic equipment and general-purpose power needs.

### Technical Specifications

**Electrical Characteristics:**

* **AC Output Power:** 500 VA
* **Output Voltage Ranges:**
* 0-65 VAC
* 0-130 VAC
* 0-260 VAC
* Adjustable nominal output voltages of 0-65, 0-130, and 0-260 VAC
* Can provide 0-32, 0-130, and 0-260 VAC, with nominal outputs of 28, 115, and 230 VAC (Note: This appears to be a specification for the Model 251, but sometimes specifications are listed together).
* 55 VA – 260 VA (This range appears to be a typo or a partial range from the source).
* **Output Frequency Range:**
* 45 Hz to 5 KHz at full power
* 45 Hz to 5000 Hz
* The output is derated to half power at frequencies above 5 KHz.
* Can support 47 to 63 Hz or 47 to 425 Hz for military-specification testing.
* Can support up to 10,000 Hz with derating.
* **Input Power Requirements:**
* 115 or 230 VAC ±10%, 47-53 Hz
* 50 or 60 Hz
* Units with 400 Hz input power are available on special order.
* **Harmonic Distortion:** Typically better than 0.4%, typically 0.6% THD worst case. Figure 1-2 in several sources shows a typical harmonic distortion curve.
* **Line Regulation:** +0.25% at full load vs. ±10% change of input line voltage.
* **Load Regulation:** +1% from no load to full load over the full frequency range and ±10% input range. Adjustable to better than 0.1% for specific load conditions.
* **Gain Stability:** ±0.25% for 24 hours at constant line, load, and temperature.
* **Response Time:** Less than 50 µsec.
* **Noise Level:** 70 dB below full output.

**Oscillator and Frequency Control:**

* **Frequency Establishment:** Output frequency is established by a plug-in oscillator module.
* **Oscillator Options:** A variety of fixed and variable frequency plug-in oscillator modules are available.
* **Frequency Tolerance:** Up to 0.0001%.
* **External Programming:** Connector J1 can be used for external amplitude programming and synchronization of the internal oscillator to an external timing source. Input impedance must be matched for a gain of 1.

**Output Characteristics:**

* **Waveform Quality:** Clean, stable AC power with excellent waveform quality.
* **Load Power Factor:** +0.7 at full VA.
* **Output Impedance:** Low effective output impedance.
* **Current Limiting:** Features current-limiting circuitry for protection. Full power can be obtained at 28 volts or less (up to 18 amperes) via a dedicated 28-volt tap on the output transformer.

**System Configurations:**

* **Single Phase:** The basic power source output is single phase.
* **Multi-Phase Capability:** Two or three power sources can be stacked and driven by a common multi-phase plug-in oscillator module to provide two-phase or three-phase power. Standard system models exist for two-phase and three-phase configurations, such as System 500-2 and System 500-3Y.

**Interfaces:**

* **Front Panel:** Voltmeter, voltage amplitude control, power circuit breaker, and indicator lights.
* **Rear Panel:** Output power terminal block. Connector J1 for external programming and synchronization.

**Physical Characteristics:**

* **Enclosure:** All-steel enclosure designed for standard 19-inch rack-mounting and slide-out capability.
* **Cooling:** Air drawn through a front panel grill and exhausted at the rear.

**Environmental:**

* **Operating Temperature:** -20° to +50°C.
* **Storage Temperature:** -40° to +80°C.

### Why Choose Aumictech for the Elgar 501A?

At Aumictech, we specialize in supplying high-end AC power source equipment. Whether you need reliable simulation of various AC line conditions, precise voltage and frequency control for critical testing, or robust power for R&D applications, our team ensures the Elgar 501A delivers maximum performance for your application.