9907-173
May 26, 2026

9907-173

Woodward 9907‑173 is a dedicated generator load‑sharing module matching 2301A series speed governors, used for parallel operation of multiple diesel/gas engine generator sets. It realizes precise real‑power load sharing between gensets, supports isochronous and droop control modes, and is widely applied in marine power stations, industrial backup power and off‑grid power generation systems。

Description

Core Functions

  1. Dual control modes: isochronous mode for isolated bus parallel load sharing; droop mode for grid‑connected load regulation.

  2. Real‑time load measurement via 3‑phase CT/PT inputs, output analog speed‑trim signal to adjust governor fuel output.

  3. Built‑in droop adjustment (0–10% speed droop), compatible with Woodward SPM‑A synchronizer for genset synchronization.

  4. Load‑sharing accuracy: ±5% of rated load between parallel‑connected generators.

  5. Perfectly matched with Woodward 2301A speed controllers for integrated parallel power management。

Electrical Specifications

  • Power Supply: 115/230 VAC (jumper‑selectable), 50–400 Hz, power consumption ≤5 W

  • Inputs: 3‑phase PT (95–130 VAC / 190–260 VAC); 3‑phase CT (3–7 Arms full‑load)

  • Output Signal: ±3 VDC analog speed‑trim signal for governor regulation

  • Operating Temperature: −40 °C ~ +70 °C; Storage Temperature: −40 °C ~ +85 °C

  • Certifications: CE compliant, industrial anti‑interference

Environmental & Mechanical Features

  • Dimensions: 273.6 mm × 59.2 mm × 214.1 mm

  • Weight: Approx. 1.4 kg

  • Mounting: Panel‑mount installation

  • Enclosure: Rugged metal housing, shock‑resistant (40 g impact resistance)

Typical Applications

  • Load sharing for marine parallel generator sets

  • Industrial off‑grid power station genset parallel control

  • Backup power system multi‑unit load distribution

  • Supporting control of Woodward 2301A series speed governors


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