ABB REM630 Product Manual

Also see for REM630: Applications manual Applications manual

Contents

ABB REM630 Product Manual Manual pdf 9 page image

4. Protection functionsREM630 offers all the functionality needed tomanage motor starts and normal driveoperations also including protection and faultclearance in abnormal situations. The motormanagement IED features motor run-up timesupervision, locked rotor protection andprotection against too frequent motor starts.Furthermore, the IED offers thermal overloadprotection, phase unbalance protection,stabilized differential protection for motors,high-impedance or flux-balance-basedprotection, three-phase directional overpowerprotection, underexcitation protection, load-based motor jam protection, loss of loadsupervision, and phase-reversal protection.REM630 also incorporates non-directionaland directional earth-fault protection, rotorearth-fault protection and back-upovercurrent protection. The IED also offersoptional negative and positive phasesequence overvoltage protection, positivephase sequence undervoltage protection,underfrequency and overfrequency protection.In certain motor drives of special importancethere must be a possibility to override themotor thermal overload protection to performan emergency start of a hot motor. To enablean emergency hot start, REM630 offers aforced start feature.GUID-79E59A23-7C6B-4EF4-AEAD-D077F425C7A9 V2 ENFigure 2. Protection function overview of preconfiguration AMotor Protection and Control 1MRS756977 DREM630Product version: 1.1 Issued: 2011-05-18ABB 9