Partial Discharge Brochure
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Partial Discharge Monitoring and Diagnosic Solutions for Rotating Machines

Sensors for Partial Discharge Measurements General A Partial Discharge Sensor is used to separate the high frequency partial discharge signal from the line voltage and is in general a high pass filter in a frequency range several tenkilohertz up to several ten megahertz. Typically so called coupling capacitors are used, but other high frequency sensors as high frequency current transformers or antennas are available on the market. Whatever sensor is chosen, it must meet the requirements specified by the international standard and it must provide the partial discharge high frequency signal in...

Sensors for Partial Discharge Measurements Using Surge Capacitors for Partial Discharge Measurements Large generators are typically equipped with surge capacitors to protect the machine winding. Installing a coupling capacitor directly next to the surge capacitor would significantly reduce the measurement sensitivity. In case, the surge capacitors can be used to measure partial discharges by adding a high frequency current transformer on the ground lead. For this type of installation, the installation of the surge capacitor must be slightly modified, by insulating the body of the surge...

Standalone Basic Continuous PD Monitoring TMS-5041 measuring channel. Partial discharge results are shown as 8-bit phase resolved partial discharge patterns offering 256 amplitude windows and 256 phase windows. The TMS-5041 is a lightweight easy operable partial discharge monitoring system mainly designed for standalone operation with a simple interface to a third party system or software. The TMS-5041 measures sequentially 4 Partial Discharge Channels, The system has a 4-20mA analogue output per channel, one common alarm relay output and Modbus RTU interface for the communication the scada...

Standalone Portable Partial Discharge Analyzer General Partial discharge measurements are often acquired non continuous in a defined interval of around 3 to 12 months based on the condition of the stator insulation. The TMS-6141 is a portable partial discharge analyser especially designed for this type of application. The light weight system weights less than 3.5kg and can be easily be transported within the plant and also whenever measurements shall be performed in remote areas. The optional TMS-9441 Multiplexer extends the portable analyser to a 16 channel partial discharge acquisition...

Standalone Extended Continuous PD Monitoring TMS-5141 system is available in an integrated wallmount enclsosure. The TMS-5141 is an online partial discharge monitoring system with extended functionalities. It measures simultaneously 4 partial discharge Channels, allowing enhanced partial discharge analysis as the system is able to distinguish automatically discharges between the channels as e.g. discharges between phases. The system has for each channel one 4-20mA and one alarm relay output and a Modbus RTU interface for the communication the scada system or a third party plant monitoring...

Standalone Extended Continuous PD Monitoring Local Display Bargraph Display Trend Display Realtime 4 Channel Oscilloscope Display Realtime 4 Channel PRPD Display TMS-5441 16-Channel System Whenever it is required to use more than the standard 4 partial discharge channels, the TMS-5441 is an extension of the TMS-5141 offering the same functionalities but with a build in 4x4 multiplexer at the input. The TMS-5441 is acquiring sequentially 4 channels simultaneous. Analog outputs and relay contacts are grouped together where on the Modbus RTU interface all data is available individually. The...

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