Protective Elements
in the »
UTC
« value to 2 times of »
Ib«
(FLA)
If stator temperature measurements are available, the algorithm may keep from tripping, even if the effective
current is above the ultimate trip current setting, depending on stator temperature reports. It is still important to
set a correct ultimate trip current so that the motor is well protected. If the RTDs, the module, or its
communications to the relay fail, the algorithm falls back to use of »UTC«. Also, note that if all RTD channels
are set to »
OFF
«, the algorithm reverts to the non-RTD calculation, which is based strictly on »
UTC
« .
EN MRM4 01/11
Page 393
Summary of Contents for MRM4
Page 1: ...MRM4 HighPROTEC Motor Protection Device Manual DOK HB MRM4E...
Page 3: ...Order Code EN MRM4 01 11 Page 3...
Page 18: ...Important Definitions Page 18 EN MRM4 01 11 41 SG Prot ON 42 SG ON Cmd SG Prot ON SG ON Cmd...
Page 115: ...Navigation Operation Navigation Operation EN MRM4 01 11 Page 115 1 2 3 5 7 6 8 10 9...
Page 162: ...Recorder Name Description I 2 TripCmd Signal Trip Command Page 162 EN MRM4 01 11...
