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What is the MTTF for the Tesys T Motor Management Relay?


We have the MTTF (Mean time to failure) value for this product. These values are provided by statistics regarding the experience of the product in industrial area.

The MTTF for the product Tesys T is 700 000 hours. This value is done by test and simulation. 
 
The calculated MTTF for various Tesys T part references are provided below and in attachment.
 
Surrounding temperature: 60°C   MTTF (in Hours)
    Contr. Power Supply Modbus Profibus DeviceNet CANopen Ethernet
  LTMR 24VDC 881924 883203 888920 888920 525956
    100-240VAC 862156 863377 868841 868841 515916
  LTMR+LTME 24VDC 701682 702491 706104 706104 456087
    100-240VAC 703945 704759 708395 708395 454756
               
Surrounding temperature: 15°C   MTTF (in Hours)
    Contr. Power Supply Modbus Profibus DeviceNet CANopen Ethernet
  LTMR 24VDC 2189252 2231027 2259601 2259601 1314890
    100-240VAC 2244059 2287979 2318034 2318034 1289790
  LTMR+LTME 24VDC 1670071 1694272 1710700 1710700 1140217
    100-240VAC 1754072 1780792 1798946 1798946 1136890
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