DC Ground-Fault Monitor SE-601

Protection Relays © May 2012 Littelfuse Protection Relays & Controls www.littelfuse.com/Protection Relayswww.littelfuse.com/se-601Ungrounded DC system DescriptionThe SE-601 is a microprocessor-based ground-fault relay for ungrounded dc systems. It provides sensitive ground-fault protection without the problems associated with nuisance tripping. Ground-fault current is sensed using an SE-GRM Series Ground-Reference Module—a resistor network that limits ground-fault current to 25 mA. The SE-601 is used on ungrounded dc systems ranging from industrial 24-Vdc control circuits to 1000-Vdc solar and transportation systems.se-601 series (PGr-2601)DC Ground-Fault MonitorSpecificationsIEEE Device Numbers dC overcurrent Relay (76g)Input Voltage See ordering informationDimensions H 75 mm (3.0"); W 55 mm (2.2"); D 115 mm (4.5")Trip Level Settings 1-20 maTrip Time Settings 0.05 -2 .5 sOutput Contacts isolated Form a and Form BContact Operating Mode Selectable fail-safe or non-fail-safeTest Button LocalReset Button Local and remoteAnalog Output 0-5 VConformally Coated Consult factoryApprovals CSa certified, uL Listed, Ce (european union), C-tick (australian)Warranty 5 yearsMounting din, Surface (standard) Panel (with PMa-55 or PMa-60 adapter) orDerinG nUmber ConTrol PoWerSe-601-od 24 VdcSe-601-ot 48 VdcSe-601-ou 120/240 Vac/VdcaCCessories reqUiremenTSe-gRM SeRieS RequiredPga-0500 optionalPMa-55 optionalPMa-60 optionalNote: For optional conformal coating please consult factory.Ordering InformationSimplified Circuit DiagramSE-GRM Series Ground-Reference Module Required accessory, used to connect the SE-601 DC Ground-Fault Monitor to the DC bus. PGA-0500 Analog % Current Meter Optional panel-mounted analog meter displays ground-fault current as a percentage of 22 mA.feaTUres benefiTsAdjustable pickup (1 - 20 mA)ten settings provide a wide range of low-level protection Adjustable time delay (50 ms - 2.5 s)adjustable trip delay allows quick protection or delayed responseOutput contacts Form a and Form B output contacts for operation of separate annunciation and trip circuitsAnalog output (0 - 5 V)Provides means for connecting to a meter (Pga-0500) or a control systemNon-volatile trip MemoryRetains trip state when de-energized to simplify troubleshootingSelectable contact operating modeSelectable fail-safe or non-fail-safe operating modes allow connection to shunt or undervoltage breaker coilMicroprocessor based no calibration required saves on maintenance costFeatures & BenefitsAccessoriesAGROUND-REFERENCE MODULEUNGROUNDEDSUPPLYL2SE-601SE-GRM SERIESL1+-(DC Ground-Fault Monitor)A