Elgar 251C Linear AC Power Source 250VA

The Elgar 251C is a single-phase AC power source designed to provide a stable and reliable output for testing and simulation of AC power conditions. This unit is part of Elgar’s C Series AC Power Sources, which are characterized by their rack-mountable enclosures and direct output from the power amplifier. The 251C functions as a high-power linear amplifier driven by a precision oscillator, enabling precise control over output frequency and amplitude.

### Technical Specifications

**Electrical**

* **Output Power:** 250 VA at rated output voltages.
* **Output Voltage Ranges:**
* 0-32 VAC
* 0-130 VAC
* 0-260 VAC
(Nominal output voltages include 28, 115, and 230 VAC)
* **Output Frequency Range:**
* 45 Hz to 5 kHz at full power.
* 5 kHz to 10 kHz at rated half power.
* For C Series, the output frequency range is 15 Hz to 10 kHz.
* **Frequency Accuracy:** Achieved via plug-in oscillator modules, with accuracies available up to .0001%.
* **Input Voltage:**
* 115 VAC or 230 VAC ±10%.
* C Series units are wired for 117 VAC but can be jumpered for 234 VAC operation (47-63 Hz).
* **Input Frequency:** 47-63 Hz.
* **Line Regulation:** +0.25% at full load for a ±10% change in input line voltage.
* **Load Regulation:** +1% from no load to full load over the full frequency range. Adjustable to better than 0.1% for specific load conditions. For C Series, ±0.50% no load to full load, 45 to 5 kHz; ±2% for 5 kHz to 10 kHz & 15 Hz to 45 Hz.
* **Response Time:** Less than 50 µsec. For C Series, less than 20 µsec.
* **Harmonic Distortion:** A typical harmonic distortion curve is available for the frequency range. For the C Series, it is 2% max. from 5 kHz to 10 kHz & 15 Hz to 45 Hz.
* **AC Noise Level:** 70 dB below full output voltage with output grounded. For C Series, 70 dB below full output voltage with input grounded.

**Interfaces**

* **Plug-in Oscillator:** Requires a separate plug-in oscillator module to establish the output frequency. Various fixed and variable frequency oscillators are available.
* **Output Terminals:** Available at the rear panel terminal board and front panel binding posts.
* **Configuration for Multi-Phase Operation:** Can be interconnected with other Elgar power sources (e.g., two or three units) using signal routing plug-ins and a common multi-phase oscillator to achieve dual-phase or three-phase output.

**Physical**

* **Enclosure:** Standard 19-inch rack-mountable enclosure.
* **Cooling:** Features a wind tunnel for cooling.

### Why Choose Aumictech for Elgar 251C?
At Aumictech, we specialize in supplying high-end AC power source equipment. Whether you need a versatile single-phase AC power source for complex testing scenarios, reliable simulation of diverse power conditions, or a foundational component for multi-phase system configurations, our team ensures the Elgar 251C delivers maximum performance for your application.