Hardware Instructions
Overview
QUALITROL
509 Series Intelligent Transformer Monitor
The QUALITROL
509 Series Intelligent Transformer Monitor (509ITM) for Liquid-Filled
Transformers offers microprocessor technology and advanced digital signal processing to
accurately assess the health and performance of oil-filled transformers.
The 509ITM can be tailored to suit the application. This complete transformer monitoring
system can monitor up to eight total parameters (up to sixteen if an Expansion Module is
added), such as:
• Liquid Temperatures (Main Tank Top or Bottom, Load Tap Changer)
• Winding Temperatures
• Ambient Temperatures
• Winding Current
• Cooling Bank Currents
• A variety of parameters from transducers, such as Tank Pressure or Dissolved Gas in
Oil analysis
Available 509ITM inputs include:
• Resistance Temperature Detectors (RTDs)
• Current Transformers ( 0 – 5 A, 0 – 10 A, 0 – 20 A, 0 – 50 A, 0 – 100 A)
• AC Voltage (0 - 140 VAC or 0 - 320 VAC)
• Potentiometer (5K - 15K)
• Current Loops (0 - 1 or 4 - 20 mA DC)
• DC Voltage (0 - 100 mV or 0 - 10 V)
• Tap Position Resistor Bridge
• Switch Contact Closure (powered or dry)
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