Eaton Cutler-Hammer Digitrip RMS 310 Instructions Manual

Also see for Digitrip RMS 310: Instruction leaflet Instruction manual

Instructions for the Digitrip RMS 310 3 -Pole and 4-Pole Trip Unit Installationand Operation with L-Frame and MDL -Frame Series C Circuit BreakersTable of ContentsDescription Page1.O General Information ............................................... 11.1 Protection .............................................................. 12.0 UL Listed Devices .................................................. 23.0 Installation ............................................................. 23.1 Preparation (All Trip Units) ..................................... 23.2 4-Pole Trip Unit Installation ..................................... 23.3 Ground Fault Trip Unit Installation .......................... 33.3.1 General .................................................................. 33.3.2 Installation ............................................................. 33.43.54.04.14.24.34.45.05.15.25.35.45.55.66.06.16.23-Pole (Non-Ground Fault) Trip Unit Installation ..... 5Final Installation Instructions (All Trip Units) ...........6Principle of Operation ............................................ 6General .................................................................. 7Overload Trip ......................................................... 7Short Delay/lnstantaneousTrip .............................. 7Ground Fault Protection ......................................... 7Protection Settings ................................................. 7General .................................................................. 7Short Delay Pick -up Settings ................................. 7Short Delay Time Settings ..................................... 7Instantaneous Pickup Setting ................................ 7Ground Fault Pick -up Setting ................................. 7Ground Fault Time Settings ................................... 8Testing ................................................................... 8Functional Field Testing ......................................... 8PerformanceTesting for Ground Fault Trip Units .... 8-6.2.1 Code Requirements ............................................... 86.2.2 Standards Requirements ....................................... 96.2.3 General Test Instructions ....................................... 97.0 Rating Plug .......................................................... 128.0 References .......................................................... 128.1 Series C L -Frame Molded CaseCircuit Breakers ................................................... 128.2 Internal Accessories ............................................ 12PRESENT BEFORE PROCEEDING WITHTHETASK,AND ALWAYS FOLLOW GENERALLY ACCEPTEDSAFETY PROCEDURES.MISAPPLICATION OR MISINSTALLATION OF ITSPRODUCTS.CUTLER - HAMMER IS NOT LIABLE FORTHEThe user is cautioned to observe all recommendations,warnings, and cautions relating to the safety of personneland equipment as well as all general and local health andsafety laws, codes, and procedures.The recommendations and information contained hereinare based on Cutler-Hammer experience and judgement,but should not be considered to be all -inclusive or cover-ing every application or circumstance which may arise. Ifany questions arise, contact Cutler -Hammer for furtherinformation or instructions.Fig. 1 Digitrip RMS 310 Trip Unit for 3-Pole L-Frame &MDL Frame Series C Circuit Breaker1.O GENERAL INFORMATIONAA WARNINGDEATH, SEVERE PERSONAL INJURY, ORSUBSTANTIAL PROPERTY DAMAGE CAN RESULTFROM CONTACT WITH ENERGIZED EQUIPMENT. DONOT ATTEMPT INSTALL OR PERFORMMAINTENANCE ON EQUIPMENT WHILE IT ISENERGIZED. ALWAYS VERIFY THAT NO VOLTAGE IS1.1 ProtectionThe Digitrip RMS 310, illustrated in Figure 1, is an elec -tronic trip unit that incorporates a microprocessor -basedcustom application specific integrated circuit design foruse with Series C L -Frame and MDL Frame Molded CaseCircuit Breakers.The Digitrip RMS 310 provides true RMS current sensingfor proper correlation with thermal characteristics ofconductors and equipment. Interchangeable rating plugsEffective March 2003 Supersedes I.L. 29C615D dated July 1998 EATONI.L. 29C615E