Eaton IZM20 Manual

Also see for IZM20: Manual Operation and Maintenance Instructional Manual Instructions

Effective May 2010 2A10996H0105/10 AWA1230-2437IZM20 and IZM93 frame cassetterejection bracket kit warning(1) Only qualified electrical persOnnel shOuldbe permitted tO wOrk On the equipment.(2) always de-energize primary andsecOndary circuits if a circuit breakercannOt be remOved tO a safe wOrk lOcatiOn.(3) drawOut circuit breakers shOuld belevered (racked) Out tO the discOnnectpOsitiOn.(4) all circuit breakers shOuld be switchedtO the Off pOsitiOn and mechanism springsdischarged.failure tO fOllOw these steps fOr allprOcedures described in this instructiOnleaflet cOuld result in death, bOdily injury,Or prOperty damage. warningthe instructiOns cOntained in this awa and OnprOduct labels have tO be fOllOwed. Observethe five safety rules:– discOnnecting– ensure that devices cannOt beaccidentally restarted– verify isOlatiOn frOm the supply– earthing and shOrt-circuiting– cOvering Or prOviding barriers tOadjacent live partsdiscOnnect the equipment frOm the supply.use Only authOrized spare parts in the repairOf the equipment. the specified maintenanceintervals as well as the instructiOns fOrrepair and exchange must be strictly adheredtO prevent injury tO persOnnel and damage tOthe switchbOard.Section 1: General informationIZM drawout circuit breakers come in a varietyof continuous current and interrupting ratings. Toprevent the insertion of a drawout circuit breakerinto a cassette with which it is incompatible,rejection interlock key plates are provided forboth the circuit breaker and the cassette. As thebreaker is pushed into the cassette, the interlockpins on the breaker move past the pins in thecassette if they are compatible.Section 2: Installation ofrejection bracketTo install the rejection bracket, proceed with thefollowing three steps:Step 1: Align the supplied bracket as shown,and fasten to the floor of the cassette withtwo supplied M6 x 10 thread-forming screws.Torque to 8–10 ft-lbs (10.5–13 Nm). Refer toStep 2 for a three-pole cassette or Step 3 for afour-pole cassette).Nte:N Do not install the bracket for the 40/42 kA rating.Figure 1. Step 1Align withRight Side HoleAlign with RearHole for 50 kAor Basic Ratingfor IZM20_and IZM93_Align with FrontHole for 65 kAor Normal Ratingfor IZM20_and IZM93_

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