Diagnostic Transformer Monitor, DTM

The DTM (Diagnostic Transformer Monitor) is a microprocessor-based device that continuously monitors bushing insulation based on the sum of currents method and partial discharges that may be produced due to bushing and transformer insulation defects. With additional load current signals it allows the detection of critical winding deformation resulting from short circuits.

The basic standalone unit shown in the picture consists of four modules (from the left to the right):

• Power Supply
• Main CPU module
• Bushing Health
• Winding Module (BHWM)
• A 15 channel partial discharge module (PDM)

The basic unit may be extended with additional modules allowing for more economical or accurate way of monitoring multiple objects. The DTM can have up to six BHWM or PDM modules allowing monitoring several transformers/metering transformers (within allowable signal cable distance) with one monitor.
 

Product Link:

• Diagnostic Transformer Monitor, DTM
• Switchgear and Cable Diagnostic Monitor, SCM
• Rotating Machine (Motor & Generator) Diagnostic Monitor, RMM
• Continuous Bushing and Winding Distortion Monitor, BHWM

 
Technical Paper

• The Future of Predictive Technologies is Here Now
• On-Line Transformer Diagnostics
• Can PD occur at 3.3KV motor ?

 
Application Note

• Periodic Testing or Continuous Monitoring ?
• Best practice of measurement bandwidth
• Installation Diagram of the online continuous PD monitoring system

   
Contact our application engineers for further details click here.