GE Hydran 201Ti transformers

GE Hydran 201Ti transformers

DESCRIPTION

Transformers are key and expensive components of the electrical grid and knowledge of their  health condition is essential to having a reliable network. When a transformer’s insulation system is  overstressed, gases are produced that dissolve in the oil. Dissolved Gas-in-oil Analysis (DGA) is recognized  as the best indicator of developing faults.

The Hydran™ 201Ti is a small and easy to setup continuous Dissolved Gas-in-oil Analysis (DGA) monitor.  It provides the basic information used by IEEE® Standard C57.104 and can be used as an essential first  line of defence for the transformers in your fleet to obtain advance warning of a failure condition and  minimize the risk of an unplanned outage.The 201Ti uses fuel cell technology (described as fixed instruments - method 3 in the standard) and is  now available with a choice of either the world renown “Hydran Composite Gas” sensor which responds  100% to Hydrogen and is also sensitive to Carbon Monoxide, Acetylene and Ethylene or the more basic  “Hydrogen Only” sensor which focuses purely on Hydrogen gas generation.

Key Benefits

• Continually measures key fault gas to give you an insight into the transformer’s condition 

• Choice of gas sensor: traditional “Composite gas” or more basic “Hydrogen only” 

• Communicates gas ppm and gas rate of change values remotely to avoid site visits and enable  remote supervision 

• Fourth generation of this continuously improved design, with over 25,000 units sold worldwide

Applications

Power Utilities

• Simple and effective solution for less-critical transformers 

• Focuses and prioritizes asset replacement strategy

Industrial Plants 

• Reduces the risk of process interruption due to power failure 

• Minimizes costly production downtime

Easy Asset Supervision

• Permanently mounts on a single transformer oil  valve. No extra piping or pump required 

• "Composite gas" sensor responds 100% to  Hydrogen (general fault gas) and is also sensitive  to Carbon Monoxide (overheated paper)  Acetylene (arcing) and Ethylene (overheated oil)  thus covering main failure root causes 

• "Hydrogen only" gas sensor is simpler and  responds 100% to Hydrogen gas only, the  general fault gas

Configurable Alarms 

• An alarm is raised when an abnormal level of  fault gas is detected 

• Two alarm levels (one for Alert and one for Alarm)  can be set to show increasing severity 

• Alarms can be set on gas ppm levels or on gas  rate of change (ROC) over an hour or a day 

• Automatic self-test every 15 days will trigger  service alarm if it detects a fault, including power  failure, oil valve closed, sensor or battery needing  replacement

Human Interface 

• Backlit LCD display of gas information 

• Keypad to stop unit and acknowledge alarms 

• Compatibility with GE’s acclaimed Perception™ software to download, trend and analyze  transformer data

Mark IV Improvements 

• Completely overhauled with improved sensor  durability, new electronic boards and power  supply to make it RoHS compliant while  increasing device reliability and capabilities 

• Local USB port to replace the RS-232 port no  longer found on most field laptops 

• Digital output of registers using Modbus® protocol communication over isolated RS-485