SEL-501
Dual Universal Overcurrent Relay
The SEL-501 Dual Universal Overcurrent Relay is two complete sets of protection; both can be configured as one of five basic relays.
Starting At
$1,320Universal Protection—Provide simple and economical protection for transformers, breakers, motors, capacitor banks, feeders, and other apparatus, with two independent three-phase overcurrent relays in a single compact package. The relay provides numerous protection schemes that are enabled by user settings.
Application Versatility—Set each side of the dual relay to correspond to a different application. For example, set one side for a feeder application and the other side for a breaker failure application.
Complete Feeder Protection—Install two SEL-501/501-2 Dual Universal Overcurrent/Dual Overcurrent Relays in two-high breaker switchgear to protect two separate feeders. This provides primary and backup protection for each feeder.
Transformer Protection—Connect one side of the dual relay to the transformer high-side CTs for transformer overload and overcurrent protection. Connect the other side of the relay to the neutral CT on the wye side of a delta-wye transformer for sensitive internal ground fault protection and backup external fault protection.
Details
Compact Package
Two independent three-phase relays (X and Y) in a single compact package simplify two-high switchgear installations with reduced wiring, enhanced protection, and simplified settings. Each relay is configurable for one of several relay applications.
Flexible Applications Eliminate Settings
Complexity Settings menu includes individual selections for Feeder (FDR), Overcurrent (OC1), Motor (MOT), Breaker Failure (BFR), and Timer (TMR) relay applications. Feeder and overcurrent applications include phase, negative-sequence, and residual ground instantaneous, definite-time, and time-overcurrent elements. The breaker failure application includes breaker failure initiate, retrip, and breaker failure time-delayed operation. The timer relay application includes independent pickup and dropout settings for two outputs driven from a single control input.
Motor Protection Application
The motor relay application includes a motor thermal model for applications not requiring resistive temperature device (RTD) inputs. The motor thermal model automatically switches between starting and running conditions, and requires only basic information about the motor.
Event Reporting
The relay stores 20 event report summaries and 5 fifteen-cycle event reports. The event summaries and the last event report are stored in nonvolatile memory.
Configuration and Control
The SEL-501 is easily configured and controlled from the local front panel or through the front or rear EIA-232 serial port ASCII/binary interface using off-the-shelf terminal emulation software.
Dual three-phase overcurrent relays for transformers, breakers, motors, capacitor banks, and feeders.
Minimum Software Version
Latest Firmware Versions
There are no firmware versions available for this product.
| Product | Revision | Firmware ID | Date Available | Serial Number | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SEL-501-0 | R950 | SEL-501-R950-Z001001-D20210406 | 4/23/21 | ~1211130001 | ||||||||||||||||||||
| Conventional Terminal Blocks | ||||||||||||||||||||||||
| SEL-501-0, 1 | R902 | SEL-501-R902-V65X1XXp2-D20111101 | 11/8/11 | ~1113120001 | ||||||||||||||||||||
Plug-In Connectors (Connectorized®) Please contact Application Engineer for firmware related to your hardware platform. The current revision does not apply to all hardware. The firmware revision number follows the “R” and the release date follows the “D.” The version number follows the “V” as follows: V[VS] = V[abxxcxdx]
| ||||||||||||||||||||||||
| SEL-501-2 | R950 | SEL-501-2-R950-Z001001-D20210406 | 4/23/21 | ~1211130001 | ||||||||||||||||||||
| Conventional Terminal Blocks | ||||||||||||||||||||||||
| SEL-501-2 | R902 | SEL-501-2-R902-V65X1XXp2-D20111101 | 11/8/11 | ~1113120001 | ||||||||||||||||||||
Plug-In Connectors (Connectorized®) Please contact Application Engineer for firmware related to your hardware platform. The current revision does not apply to all hardware. V[VS] = V[abxxcxdx]
| ||||||||||||||||||||||||
The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.
Minimum Software Version
Instruction Manuals
501 551 551C 587Z - Software Tab
Configuration
acSELerator QuickSet SEL-5030 Software
QuickSet is a tool for engineers and technicians to quickly and easily configure, commission, and manage power system devices. QuickSet includes a Graphical Logic Editor and a device template tool to reduce configuration time and streamline deployment.
Learn more and download on the SEL-5030 software page.
Visualization & Analysis
SEL-5601-2 synchroWAVe Event Software
synchroWAVe Event helps engineers diagnose a protective relay’s behavior during a power system fault. It is a powerful and easy-to-use solution for displaying and analyzing SEL relay event reports and COMTRADE files.
Learn more and download on the SEL-5601-2 software page.
Product Certifications
