SE-704-0D

Protection Relays & Controls Ground-Fault Protection–Grounded Systems SE-704 SERIES (PGR-4704) Earth-Leakage Monitor Description The SE-704 is a microprocessor-based ground-fault relay for resistanceand solidly-grounded systems. It offers very sensitive ground-fault detection as low as 10 mA and can be used on systems with significant harmonic content. The SE-704 provides feeder-level protection or individual-load protection. The output contacts can be connected for use in protective tripping circuits or in alarm indication circuits. The analog output can be used with a PLC or a meter. Features & Benefits FEATURES Adjustable pickup (10 mA - 5 A) Adjustable time delay (30 ms - 2.0 s) Analog output (0-5 V & 0-1 mA) CT-Loop monitoring BENEFITS Adjustable trip setting provides a wide range of low-level protection and system coordination Adjustable trip delay allows quick protection and system coordination Form A and Form B ground-fault output contacts for operation of separate annunciation and trip circuits Allows for connecting an optional meter (PGA-0500) or control system Alarms when CT is not connected Selectable contact operating mode Selectable fail-safe or non-fail-safe operating modes allows connection to shunt or undervoltage breaker coil Harmonic filtering Non-volatile trip memory Microprocessor based Universal power supply Eliminates nuisance tripping Retains trip state when de-energized to simplify troubleshooting No calibration required saves maintenance cost Allows operation in application where one side of PT is faulted, provides flexibility for numerous applications Output contacts Simplified Circuit Diagram CT A A GROUNDED SUPPLY B C Accessories A SE-704 SERIES L1 (Earth-Leakage Monitor) L2 B SE-CS30 Series Ground-Fault Transformer Required zero-sequence current transformer specifically designed for low level detection. Flux conditioner is included to prevent saturation. PGA-0500 Analog % Current Meter Optional panel-mounted analog meter displays groundfault current as a percentage of the set-point or 5 A. Specifications Ordering Information ORDERING NUMBER CONTROL POWER SE-704-0U 120/240 Vac/Vdc SE-704-0D 12/24 Vdc SE-704-0T 48 Vdc SE-704-03 24 Vac ACCESSORIES REQUIREMENT SE-CS30 Series Required PGA-0500 Optional PMA-55, PMA-60 Optional Note: For optional conformal coating please consult factory. © 2015 Littelfuse Protection Relays & Controls Littelfuse.com/se-704 IEEE Device Numbers Ground fault (50G/N, 51G/N) Input Voltage See ordering information Dimensions  H 75 mm (3.0"); W 55 mm (2.2"); D 115 mm (4.5") Trip Level Settings 10 mA-5.0 A Trip Time Settings 30-2000 ms Contact Operating Mode Selectable fail-safe or non-fail-safe Harmonic Filtering Standard feature Test Button Standard feature Reset Button Standard feature CT-Loop Monitoring Standard feature Output Contacts Isolated Form A and Form B Approvals UL Listed (E340889), CSA, CE (European Union) C-Tick (Australian) Analog Output 0-5 V & 0-1 mA Conformally coated Optional Warranty 5 years Mounting DIN, Surface (standard) Panel (with PMA-55 or PMA-60 adapter) Rev: 4-B-032515 Based on Manual Rev 7-C-082814 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Littelfuse: SE-704-0U SE-704-03 SE-704-03-CC SE-704-0D-CC SE-704-0T SE-704-0D SE-704-0T-CC SE-704-0U-CC