American SEL-587 protection device current differential relay
LEHIY item code: LH-SEL-0035
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This page helps you check American SEL-587 protection device current differential relay before you ask for a quote.
Confirm the brand, model number, part number, and quantity. Share a clear nameplate photo when the old item has close variants.
LEHIY can check stock, lead time, packing, shipping documents, and safe replacement options for maintenance orders.
We can provide remote or on-site installation and commissioning services for the American SEL-587 current differential relay! Product models: 058710CX5X1 058710C2532, widely used in the power industry.
The American SEL-587 current differential relay, a current differential/overcurrent relay, provides protection for any dual-input device, such as transformers, motors, generators, and reactors. Apply it for differential and overcurrent protection and use event reporting for rapid post-event analysis.
Features of the SEL-587 include: Dual-winding differential protection—Provides current differential protection with programmable single-slope or dual-slope percentage limits for dual-winding transformers, reactors, generators, large motors, and other two-terminal devices. Automatic tap calculation simplifies setup.
Comprehensive overcurrent protection—Extends basic transformer protection by applying individual winding phase, residual, and negative sequence overcurrent elements. Furthermore, backup overcurrent protection uses SEL adaptive overcurrent elements to provide high-speed operation, even under severe CT saturation.
Differential Component Monitoring – Monitors differential components under transformer energized conditions using second and fourth harmonic blocking or suppression along with DC blocking. The calculated fifth harmonic can be used to monitor differential component operation during transformer overexcitation events.
Serial Data Communication – Communicates with ASCII terminals, local HMIs, SCADA, or DCS systems using a serial port. The SEL-587 comes standard with a front EIA-232 serial port. As an ordering option, an EIA-232 or EIA-485 serial port can be selected for the rear.
Ports can be selected and configured for SEL ASCII and interleaved SEL Fast binary messages or the Modbus RTU Slave protocol via settings. Our company offers a superior supply of American SEL-587 protection device current differential relays.
To meet different needs, SEL offers a variety of models to choose from: SEL-551, SEL-551C, SEL-851, SEL-710, SEL-710-5, SEL-734, SEL-734P, SEL-735, SEL-751, SEL-751A, SEL-787, SEL-787-2-3-4, SEL-487E, SEL-387E, SEL-387, SEL-387A,.
SEL-587, and SEL-2414.
For product details, please contact our sales department.
Plain language sourcing guide for American SEL-587 protection device current differential relay
Start with the full model name. Check the brand name. Check the part number. Check the code on the old unit. These small checks help you avoid a wrong order.
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| Brand Name: | SEL | Certification: | ISO9001, CE |
|---|---|---|---|
| Place of Origin: | China | Condition: | New |
| Warranty: | 1 year | Customized sourcing: | available |
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American SEL-587 protection device current differential relay
Send the brand, model, part number, quantity, nameplate photos, and application requirements. LEHIY will check availability, suitable alternatives, packing details, and delivery options before quoting.
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Use this page as a practical sourcing note for engineers, buyers, and maintenance teams comparing automation components. Check the model name, brand, LEHIY code, application, and replacement requirements before sending an inquiry.
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