Medium Voltage Motor & Feeder Protection

Bulletin 857 Motor-Feeder Protection, Medium Voltage offers solutions for today’s motor and feeder protection requirements in one package. Our protection relay gives you flexible control to maximize your motor’s output capabilities, and provides current, voltage and motor protection functions. The protection relay can be integrated into a low voltage or medium voltage Motor Control Center, or can be purchased as an OEM component. Configure these relays using our bundled SetPointPS software.

Bulletin 857 Medium Voltage Motor & Feeder Protection
  • Overview
  • Product Selection
  • Specifications
  • Software
  • Documentation
  • Resources

Features

  • Provides fully digital signal handling
  • Includes powerful 16-bit microprocessor
  • Offers high measuring accuracy on all the setting ranges
  • Includes wide setting ranges for the protection function can reach a sensitivity of 0.5%
  • Offers flexible control and blocking possibilities
  • Adapts to various substations and alarm systems
  • Includes SetPointPS configuration softwar

To view commonly ordered and quickly available products, use the Product Configuration Assistant for our complete product offerings.

Specifications

TitleNumberDownload
Bullletin 857 Protection System User Manual857-UM001

Certifications

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Product Certifications

See our Product Certification site for Declarations of Conformity, certificates and other certification details.

SetPointPS Software

SetPointPS is a relay configuration tool for Bulletin 857 and 865 relays. The SetPointPS tool reads all information directly from the device, and it can be used to evaluate disturbance recordings from the relays. The built-in evaluator uses standard COMTRADE files for saving the records. SetPointPS is compatible with all Microsoft® Windows® systems (back to and including Windows 95).

Downloads

Learn More

Additional software products are available from Rockwell Software.

Documentation

TitleNumberDownload
Motor Protection Solutions Brochure193-BR029
Bulletin 857 Motor and Feeder Protection Relay Product Profile857-PP001
Bulletin 857 RAA/RAD RTD Scanner User Manual857-UM002
Bulletin 857 Protection System User Manual857-UM001
SetPointPS Configuration Software Programming Manual857-PM001
Bulletin 857 Motor/Feeder Protection Relay Quick Start Manual857-QS001
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Product Certifications

See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Configuration & Selection Tools

Other Resources

  • Knowledgebase — Visit our online resource for technical information, support chat and forums, software updates, and product safety advisories/notices.