Can someone please tell me what the lower time limit is for the normal range of IDMT curves? I.e. for higher MPS ratios (I actual / I set) where the operating time decrease there is some value of t below which one should ignore the calculated time value and use a fixed value representing the minimum time that an IDMT relay requires to operate? (This is where the curve in practice becomes horizontal)
Also how do these cutoff time values vary for:
(a) the different curves (standard inverse; very inverse, extremely inverse, etc.);
(b) electromechanial relays (eg. CDG12) vs. static vs. numerical?
Minimum Operating Time (Lower Limit) for IDMT Curves
Re: Minimum Operating Time (Lower Limit) for IDMT Curves
