Woodward 1751-147 | MPU Transformer | Speed Signal Isolation

Product Description

High-Integrity Speed Signal Isolation

The Woodward 1751-147 is a precision-engineered MPU Isolation Transformer Module designed to act as the critical interface between Magnetic Pickup (MPU) sensors and electronic control systems. In industrial turbine and engine governing, electrical noise and ground loops can severely distort speed signals, leading to erratic governing or false overspeed trips. The 1751-147 provides high-grade galvanic isolation, stripping away electromagnetic interference (EMI) and common-mode noise while transforming raw sinusoidal MPU pulses into clean, usable voltage levels for control processors.

Enhanced Signal Conditioning and Protection

This module is optimized for high-speed machinery where synchronization and precise frequency detection are paramount. By isolating the sensing circuit from the control backplane, the 1751-147 protects sensitive electronics from high-voltage transients that can occur in the event of an MPU cable fault or ground strike. Its passive design ensures minimal phase shift and high signal fidelity across a broad frequency spectrum, making it compatible with a wide range of gear tooth profiles and rotational speeds found in power generation and marine propulsion.

Detailed Technical Specifications

The following table details the mechanical and operational parameters for the 1751-147.