Ametek / Elgar 501SX-14T AC Power Supply

The Ametek Elgar 501SX-14T is a programmable AC power source delivering 500 VA continuous output across selectable voltage ranges of 0–65 VAC, 0–130 VAC, or 0–260 VAC. Engineered for laboratory, manufacturing, and research environments, this SX Series unit operates from 45 Hz to 1000 Hz at full rated power, with standard 47–63 Hz input and optional 400 Hz capability. Manual or IEEE-488 programmable control via front panel or Plug-in Programmer oscillators enables precise voltage, frequency, and phase adjustment.

The supply handles non-linear rectifier loads and switch-mode DC power supply testing with crest factor capability of 4:1 or greater, delivering repetitive peak currents to 70 A.

Technical Specifications

• Output Power: 500 VA minimum, continuous duty at 100% rated capacity; 150% rated capacity into linear resistive loads


• Output Voltage: 0–65 VAC, 0–130 VAC, or 0–260 VAC; nominal outputs at 28 VAC, 115 VAC, 230 VAC; full rated VA from 55–65 VAC, 110–130 VAC, or 220–260 VAC


• Frequency Range: 45 Hz to 1000 Hz at full rated power; standard 47–63 Hz; optional 400 Hz


• Load Regulation: ±1% (45 Hz to 450 Hz, pulsed load); ±1% (45 Hz to 1000 Hz, linear load)


• Line Regulation: ±0.25% at rated load for ±10% input variance


• Gain Stability: ±0.25% over 24 hours at constant line, load, and temperature post warm-up


• Crest Factor: 4:1 or greater (repetitive peak current to 70 A); 3.5:1 to 6:1 for firing angles <10° from voltage peak


• AC Noise: 70 dB below full output voltage (grounded input)


• Power Factor Range: Unity to ±0.7

Key Features

• Selectable three-range output voltage configuration for flexible test scenarios


• Extended frequency operation from 45 Hz to 1000 Hz enables diverse power condition simulation


• High crest factor performance suits rectifier and switch-mode load testing


• ±0.25% line and gain regulation ensures repeatable test conditions


• 100% continuous duty rating at full 500 VA capacity

Typical Applications

• Switch-mode DC power supply qualification and verification


• Rectifier load testing with high inrush current demands


• AC power condition simulation across standard and 400 Hz frequencies


• Precision voltage and frequency adjustment for component and system-level testing

Compatibility & Integration

• Input: 115 VAC, 208 VAC, 230 VAC single phase; optional three-phase and 400 Hz configurations


• Programmable via IEEE-488 (GPIB) or manual front panel controls


• Rear panel connectors: INPUT POWER and OUTPUT POWER terminal blocks; SYNC IN/OUT BNC connectors


• Output available at front and rear panels