Eaton IZM97 Instruction Manual

Also see for IZM97: Operation and Maintenance Instructional Manual Instructions Installation guide

81New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cnSection 6: Protective characteristic curvesIZM97(99)...V(U)...PXR20/25 Ground(G) CurvesG: Ground fault protection - Flat characteristic curveNotes:1. Ground PU setting from 0.2 to 1.0 of In with steps of 0.2 , have tolerance of 100% ± 10%.2. Ground Flat time from 0.1s to 0.5s, with 0.1s increments.3. Ground slope: Flat, trip time tolerance is +0 / -80ms for all settings except 0.1s setting is 0.06s to 0.1s.4. The curve is shown as a multiple of the Current Rating (In ).5. The end of the curve is determined by the interrupting rating of the circuit breaker.6. Curves applies from -20°C to +50°C ambient. Temperatures above +85°C will cause over temperature trip.7. This curve is for 50Hz, 60Hz applications.8. These curves are comprehensive for series IZM97/99 breakers including all frame sizes, ratings, and constructions.The total clearing times shown include the response time for trip unit, the breaker opening and the interruption of the current..1.2.3.4.5.6.7.8.9.01.02.03.04.05.06.07.08.09.1.2.3.4.5.6.7.8.9123456789102030405012345678910203040506070809010020030040050060070080090010002000300040005000600070008000900010000Time in SecondsCurrent in Multiples of Rating(In)0.20.20.40.60.81.00.10.30.40.5