AMETEK Solidstate Controls has been manufacturing the world’s most rugged Uninterruptible Power Supply (UPS) systems since 1962. We offer both Pulse Width Modulated (PWM) and Ferroresonant (Ferro) technologies. Every system is designed specifically to meet your needs, with completely customizable configurations.
Our UPS systems are true on-line double conversion Uninterruptible Power Supplies that provide continuous, clean, regulated power for critical AC loads. They have been designed specifically for process control and industrial applications, including, but not limited to nuclear, oil and gas, Liquefied Natural Gas (LNG), pipelines and power generation.
Both types of technologies feature digital control for enhanced communications, monitoring and diagnostics. They feature a user-friendly, full color LCD and touch screen user panel that includes switches and indicators. You can customize your panel’s switches and indicators to best fit your needs. The USB port on the panel offers easy access to download the system’s data.
As the only manufacturer to offer both technologies, we are often asked what the differences between PWM and Ferro systems are.
PWM System
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Ferroresonant System
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- Inverter bridge generates a series of pulses at high frequency (8 kHz or greater). Due to high frequency switching, less filtering is required
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- Inverter bridge generates a square wave at line frequency (typically 60 or 50 Hz)
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- Regulation is controlled by electronic feedback
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- Passive regulation – Doesn’t require voltage and current circuitry to maintain regulation
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- Magnetically creates a rock-solid, tight voltage regulation of 2%
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- Excellent dynamic response: 10% for first ½ cycle – full recovery within 3 cycles
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- Utilizes non-linear transformer (output voltage doesn’t vary with input)
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- Versatile – Multiple configurations are available
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- Can supply 500% of rated output current for fault clearing
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- Smaller footprint options
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Learn more about true on-line UPS systems here.