WOODWARD-9907-028
WOODWARD-9907-028
WOODWARD-9907-028
WOODWARD-9907-028
WOODWARD-9907-028
WOODWARD-9907-028
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9907-028

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The Woodward 9907-028 is a high-performance SPM-A synchronizer/speed and phase matching control module with power consumption as low as 5W.
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Technical specifications for 9907-028

  • Manufacturer:
    Woodward
  • Part Number:
    9907-028
  • Product Family:
    Woodward SPM-A Synchronizer
  • Synchronization time:
    Less than 5.5 seconds
  • Speed ​​offset:
    ±1.5Hz adjustable range
  • Input voltage:
    115 or 230VAC RMS, 50/60Hz
  • Voltage tolerance:
    +1.0%
  • Power consumption:
    Maximum 5 W
  • Phase matching window:
    ±10°
  • Weight:
    1.74 kg
  • Estimated shipping dimensions:
    31.4x21x4.7cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.
Description
The Woodward 9907-028 is a high-performance SPM-A synchronizer/speed and phase matching control module designed for parallel operation of multiple generators or turbines. It ensures precise phase, speed, and frequency matching between units, improving system stability and safety. The module supports standard AC voltage input (115/230VAC, 50/60Hz), with a typical synchronization time of less than 5.5 seconds and a ±10° phase matching window. It features a speed bias output, enabling ±1.5Hz frequency adjustment at 50 or 60Hz generator frequencies, and supports various electronic load sharing control systems, including high-impedance, low-impedance, and EPG outputs.

The 9907-028 consumes as little as 5W, features an indicator light to show its active status, and supports remote mode switching (run, check, enable, and shut-off modes). Its compact size and approximately 2kg weight allow for installation within switchgear. Operating in a temperature range of -54°C to +66°C, it ensures long-term reliable operation in industrial environments. Its design facilitates the installation, maintenance, and safe operation of power plants, industrial automation, and multi-machine parallel control systems.
Alternative Names
9907-173 9905-068 5462-758B 5461-650 8271-467 5502-282
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the module synchronization time?
Typical synchronization time is less than 5.5 seconds (from standstill, assuming an acceleration rate of 55%/second and optimal governor settings).
Input voltage and frequency range?
Supports 115 or 230VAC, 50/60Hz, voltage tolerance +1%.
What are the output options?
Compatible with high impedance output (2301 system), low impedance output (2301A, EPG, 2500 system), and EPG output.
How does the module achieve phase matching?
The module provides a ±10° phase angle matching window and can compensate for ±15° phase offset between the generator and synchronizer.
Does it support voltage matching?
Standard provides a 1% or 5% voltage matching range; customization is available for special requirements.
What are the operating modes?
The run, check, allow, and shut-down modes can be remotely switched via an external switch.