Accumetrics - Model AT-830 - Rotor Health Monitor

Non-Contact Temperature Measurements

The Rotor Health Monitor AT-8300 can monitor up to 12, 3-wire RTDs (PT100 style), with readings updated every 10 seconds. Up to 24 of 2-wire RTD’s can alternatively be measured (contact Accumetrics at time of order). If a current shunt is installed at the field negative potential, then the system can measure field current. Using the ratio of the field voltage to the field current, a calculated average copper temperature is then provided (shunt not included).

Field Ground Fault Resistance Measurements 

By using 16-bit digital rotor telemetry technology, the Rotor Health Monitor AT-8300 allows users to monitor fault resistance trends over time and track the progression of ground faults from their onset. This provides the possibility of early warning of impending failure and allows for predictive maintenance. Two adjustable-threshold 4-20 mA alarm relay contacts and digital data output of all measured parameters are provided, allowing warning, shutdown, and predictive maintenance tracking for ground faults.

• Continuous ground fault resistance measurements 
• Dual alarm relay contact outputs 
• 4-20 mA output log of ground fault resistance and other parameters 
• Fault location indication 
• Field voltage level and current monitoring 
• RTD monitoring for specific location temperatures

• Rotor protection through condition based maintenance 
• Predictive maintenance for large motors and generators 
• Increasing production throughput control by improved over-temperature monitoring