Continuously Monitors Bushing Health and Winding Distortion (BHWM)
Up to Six Combination of PDM and BHWM can be used with one system
USB, Ethernet and RS-485 ModBus communication Interfaces
Accept auxiliary inputs such as temperatures, humidity, tank vibration, etc.
Outputs include 4 dry contacts and a 4 - 20 ma signal.
Highly configurable
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 and Winding Module (BHWM) and 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.
