ABB RELION Series Technical Manual page 415

1MRS758755 A
REC615 and RER615
Technical Manual
GUID-543D302D-0B91-4692-BAFE-4AB7B8BA08B6 V1 EN
Figure 212: Behavior of different IDMT reset modes. Operate signal is based on
settings Type of reset curve = "Def time reset" and Type of time
reset= "Freeze Op timer". The effect of other reset modes is also
presented
The Time multiplier setting is used for scaling the IDMT operate times.
The Minimum operate time setting parameter defines the minimum desired operate
time for IDMT. The setting is applicable only when the IDMT curves are used.
The Minimum operate time setting should be used with care because
the operation time is according to the IDMT curve, but always at least
the value of the Minimum operate time setting. For more information,
Section 4
Protection functions
409