Eaton IZM97 Instruction Manual

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

36 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cnSection 4: Accessory devicesScrewlabelingStep 3: Move the lock of the closing coil to the “unlocked”(upper) position, and install the hook foot into the slot asshown. Slide the spring release device forward to make thehook foot fully fit into the slot of the mounting panel. Movethe lock down to the “locked” position.Figure 2. Step 3Step 4: Re-install the front cover removed in Step 1.IZM9 low voltage circuit breaker undervoltagereleaseWARNING(1) Only qualified electrical personnel should be permit-ted to work on the equipment.(2) Always de-energize primary and secondary circuitsif a circuit breaker cannot be removed to a safe worklocation.(3) Drawout circuit breakers should be levered (racked)out to the DISCONNECT position.(4) All circuit breakers should be switched to the OFFposition and mechanism springs discharged.Failure to follow these steps for all procedures describedin this instruction leaflet could result in death, bodilyinjury, or property damage.Section 1: General informationThe undervoltage release (UVR) opens the circuit breakerwhen its supply voltage falls to between 35–60% of ratedvoltage. If the release is not energized to 85% of its supplyvoltage, the circuit breaker cannot be closed electrically ormanually.Section 2: Installation of undervoltage releaseProceed with the following 5 steps to install the undervolt-age release:Step1: Remove the inner hexagonal mounting screws (fourfor 3 pole breakers and six for 4 pole breakers) from thecircuit breaker’s front cover using a 10 mm 1/4-inch socketwrench. Then pull down on the charging handle (by about45° angle) to remove the front cover.Step 2: Attach the corresponding label under “Accessories”on the cover nameplate.Figure 1. Step 1 and 2Mounting panelHook footSlide forward Closing coilClosing coilcan only beinstalled in themiddle slotLock