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General| Category | Relays |
|---|---|
| Manufacturer | Sel |
| Operating Temperature | -40 to 85 °C |
| Mounting | DIN Rail |
| Input Voltage | 24-48 VDC |
Protects generator against stator insulation degradation and ground faults.
Provides multiple methods for accessing the relay's operator interface via LEDs and pushbuttons.
Uses ACSELERATOR QuickSet for reduced engineering costs and simplified logic programming.
Features built-in metering for reduced device count and SER/oscillographic report analysis.
Offers two internally wetted control inputs and four contact outputs for control and status.
Utilizes multisine signal injection for 100% stator insulation monitoring, even during startup or shutdown.
Detects field ground faults using switched DC voltage injection via an SEL-2664 Field Ground Module.
Employs two elements (59N1, 59NRMS) to monitor neutral voltage magnitude for protection.
Monitors generator neutral grounding resistor (NGR) value and detects open or short circuits.
Provides metering for neutral voltage, current, injection source, insulation resistance, and NGR.
Figure 8 shows AC connections for SEL-2664S with neutral CT on the secondary side.
Figure 7 illustrates basic AC connections using the NGR tap for signal injection.
Provides detailed dimensions for wall-mounting the SEL-2664S relay.
Illustrates the connection diagram for the wall-mount option.
Describes the dual fiber-optic Ethernet ports for communication.
Details the fiber-optic EIA-232 serial port for communication.
Explains the EIA 232 serial port for communication.
Describes Terminal A with two digital inputs and four digital outputs.
Details Terminal B for power supply connections.
Covers Terminal C for neutral current IN connections.
Describes Terminal D for neutral voltage and injection source connections.
Lists the ratings for the High-Voltage Power Supply Fuse.
Describes the general characteristics of Form A and Form C output contacts.
Provides details on pickup/dropout time, mechanical durability, and breaking capacity.
Specifies operational voltage, current, make, and break current for AC outputs.
Provides dimensions for surface mounting the relay.
Lists the dimensions required for panel mounting the relay.
Details the dimensions for rack mounting the relay.
Covers enclosure protection, vibration, endurance, shock, seismic, cold, dry heat, and damp heat tests.
Specifies immunity levels for electrostatic discharge, radiated RF, fast transient, surge, and magnetic field.
Lists requirements for conducted and radiated emissions compliance.
Describes AC voltage/current input sampling and digital filtering.
Details the digital filtering specifications for analog quantities.
Specifies the processing interval for protection and control functions.
Outlines oscillography length, sampling rate, trigger, and format.
Details timestamp resolution and accuracy for the SER.
Provides pickup range, accuracy, and time delay for the 64S element.
Lists pickup ranges and accuracy for the NGR monitor.
Details pickup range, accuracy, and time delay for the 59N element.
Specifies pickup range, accuracy, and time delay for the 59NRMS element.
Provides pickup range, accuracy, and time delay for the 64F element.
Specifies the accuracy for measuring injection source current magnitude.
Details the accuracy for measuring neutral current.
Provides accuracy for stator ground insulation resistance metering.
Lists accuracy for rotor field insulation resistance metering.
Specifies the accuracy for measuring neutral voltage.
