SE-GRM150

Protection Relays and Controls Ungrounded DC System SE-601 SERIES (PGR-2601) DC Ground-Fault Monitor Description The 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. Features & Benefits FEATURES Adjustable pickup (1 - 20 mA) Adjustable time delay (50 ms - 2.5 s) Selectable contact operating mode BENEFITS Ten settings provide a wide range of low-level protection Adjustable trip delay allows quick protection or delayed response Form A and Form B output contacts for operation of separate annunciation and trip circuits Provides means for connecting to a meter (PGA-0500) or a control system Retains trip state when de-energized to simplify troubleshooting Selectable fail-safe or non-fail-safe operating modes allow connection to shunt or undervoltage breaker coil Microprocessor based No calibration required saves on maintenance cost Output contacts Simplified Circuit Diagram + A SE-GRM SERIES UNGROUNDED SUPPLY GROUND-REFERENCE MODULE Analog output (0 - 5 V) Non-volatile trip Memory Accessories - A SE-601 L1 (DC Ground-Fault Monitor) SE-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. L2 Specifications Ordering Information ORDERING NUMBER CONTROL POWER SE-601-OU 120/240 Vac/Vdc SE-601-OD 12/24 Vdc SE-601-OT 48 Vdc ACCESSORIES REQUIREMENT SE-GRM SERIES Required PGA-0500 Optional PMA-55 Optional PMA-60 Optional Note: For optional conformal coating please consult factory. © 2018 Littelfuse Protection Relays & Controls Littelfuse.com/se-601 IEEE Device Numbers DC Overcurrent Relay (76G) Input Voltage See ordering information Dimensions  H 75 mm (3.0”); W 55 mm (2.2”); D 115 mm (4.5”) Trip Level Settings 1-20 mA Trip Time Settings 0.05 -2.5 s Output Contacts Isolated Form A and Form B Contact Operating Mode Selectable fail-safe or non-fail-safe Test Button Local Reset Button Local and remote Analog Output 0-5 V Conformally Coated Consult factory Approvals CSA certified, UL Listed (E340889), CE (European Union), C-Tick (Australian) Warranty 5 years Mounting DIN, Surface (standard) Panel (with PMA-55 or PMA-60 adapter) Rev: 4-C-050213 Based on Manual Rev 2-A-041913