Benshaw SPD Series Digital Protection Relay Instruction Manual

This instruction manual provides complete setup, programming, and wiring information for the Benshaw SurProtex Digital Protection Relay (SPD Series). It explains configuration of overload class, current settings, protection parameters, and alarm/trip functions for reliable motor protection in industrial applications.

Key Points

  • Advanced Motor Protection: Provides overload, undercurrent, phase reversal, phase loss, and ground fault protection (optional).
  • Wide Current Range: Covers 0.5–60A operation without external current transformers (CTs).
  • Customizable Parameters: Programmable O/L class, CT ratio, start delay, and protection trip points.
  • Optional Ground Fault Detection: Zero-sequence CT input available on SPD-XXSZ-X models.
  • Digital Display: 4-segment LED display with a thermal bar graph for real-time motor monitoring.
  • Flexible Mounting Options: Supports both DIN rail and panel mounting configurations.
  • Simple Interface: User-friendly buttons and dials for TEST/TRIP, FUNC, SEL, CURRENT, and TIME adjustments.
  • Global Compliance: Meets IEC60947, UL508, and other international standards.