Elgar EW371 AC Power Source

The Elgar EW371 is a programmable AC power source designed to provide stable and precise AC output for testing and simulating various power conditions. This unit utilizes Pulse Width Modulation (PWM) technology to achieve high efficiency and deliver its full rated current across its output voltage range. The EW371 incorporates Digital Signal Processing (DSP) for accurate measurement of operating values, reducing the need for external measurement instruments.

### Technical Specifications

**General**
* **Manufacturer:** Elgar
* **Model:** EW371
* **Product Type:** Programmable AC Power Source
* **Output Power:** 375 VA
* **Power Stage Technology:** Pulse Width Modulation (PWM)
* **Efficiency:** High efficiency compared to traditional supplies
* **Control:** Microprocessor-controlled
* **Measurement Capabilities:** Digital Signal Processing (DSP) for independent verification of operating values
* **Cooling:** Temperature-controlled fan speed

**Electrical Specifications**
* **Output Voltage Range:** Selectable full scale: 150V, 300V, or Auto. Also specified as 0-300V AC.
* **Output Frequency Range:** Minimum 45 Hz, Maximum 500 Hz. (Note: Other Elgar AC sources offer ranges up to 10 kHz)
* **Maximum Output Current:** 7.5A max. Also specified as 2.5A AC. (Discrepancy noted between sources, refer to manual for definitive spec)
* **Current Inrush:** 50A max
* **Input Voltage:** 110V to 120V / 60 Hz / 1 Phase. Also specified as 90-132 VAC / 180-250 VAC.
* **Accuracy (Voltage, Frequency, Current, Power, Power Factor, Crest Factor):**
* Voltage Accuracy: Not explicitly detailed in provided snippets, but specified with a resolution and temperature coefficient.
* Frequency Accuracy: Not explicitly detailed in provided snippets.
* Current Accuracy: Not explicitly detailed in provided snippets.
* Power Measurement Accuracy: Not explicitly detailed in provided snippets.
* Power Factor Measurement Accuracy: Not explicitly detailed in provided snippets.
* Crest Factor Measurement Accuracy: Not explicitly detailed in provided snippets.
* **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 full frequency range. Adjustable to better than 0.1% for specific load conditions.
* **Output Harmonic Distortion:** Minimum distortion. (Note: Other Elgar series, like SL/B, offer below 0.3% midband, 0.6% full range, and SW series offers THD 0.25% to 100 Hz).

**Interfaces and Control**
* **Local Operation:** Front panel keypad
* **Remote Operation:** GPIB or RS-232 interface
* **Front Panel Controls:**
* Alphanumeric LEDs for displaying setup messages and numeric values
* Numeric and Decimal keys for data entry
* V/F or I Limit Selection Key
* “OUT” and “SHIFT” LEDs
* **Connections:**
* Terminal Block for power line output
* Front panel outlet
* GPIB Connector (Optional)
* RS-232C Connector
* **Programmable Limits:** Programmable limit of output peak current (Ipk)

**Protection Features**
* Over-power protection
* Over-current protection
* Over-temperature protection
* Over-voltage protection
* Under-voltage protection
* Short circuit protection
* Fan failure protection

**Physical Characteristics**
* **Dimensions:** Considerably smaller and lighter than traditional supplies with similar output. (Specific dimensions not provided in snippets).
* **Form Factor:** Benchtop

**Compatibility**
* Designed for testing and simulating AC power conditions for a variety of electronic devices and systems [User provided description].
* Can be used for ATE (Automatic Test Equipment) systems.

Why Choose Aumictech for ELGAR EW371?
At Aumictech, we specialize in supplying high-end AC power source equipment. Whether you need reliable testing of electronic devices, precise simulation of power line disturbances, or robust performance for your laboratory applications, our team ensures the ELGAR EW371 delivers maximum performance for your application.