Product Name: SPM-A Synchronizer
Brand Name: WOODWARD
Model Number: 9905-003
Country of Origin: USA
Warranty: 12 Months
Whatsapp：+86 18159889985
Email：[email protected]
Brand Name: |
WOODWARD |
Model Number: |
9905-003 |
Country of Origin: |
USA |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
Delivery time in stock |
Payment Terms: |
T/T |
Supply Ability: |
in stock |
|
Sales Manager: |
Stella |
|
Send an email: |
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Contact in Whatsapp: |
| Woodward Part Numbers: | |
| 9905-003 | 50/60 Hz, ±10° phase angle, 5% voltage matching |
| Inputs | |
| Voltage (bus and generator) | 115 or 230 Vac rms, 50/60 Hz |
| Voltage Tolerance | ±10% |
| Power Consumption | 5 W maximum |
| Outputs | |
| Control Compatibility | high impedance output for 2301 load sharing controls low impedance output for 2301A, EPG, and 2500 load sharing controls; and EGA, and EGM controls with external resistor EPG output for EPG controls without load sharing |
| Breaker Close Relay Breaker Close Relay |
normally open contact provided |
| Contact Ratings | Resistive Loads: 10 A at 28 Vdc 3 A at 120 Vac, 50/60 Hz Inductive Loads: 6 A at 28 Vdc 2 A at 120 Vac, 50/60 Hz |
| Breaker Close | |
| Command Duration | approx. 1 second |
| Selections and Adjustments | |
| Operating Modes | RUN, CHECK, PERMISSIVE, OFF |
| Synchronizer Reset | automatic reset |
| Phase Match Window | ±5° , ±10° , ±15° available |
| Match-up Time | 1/8, 1/4, 1/2, 1 second field-selectable internally (factory default is 1/2 second) |
| Voltage Matching Range | 0.5%, 1%, 5%, 10% available |
| Physical Installation | |
| Location | mount with switch gear |
| Weight | 2.2 kg (5 lbs) |
| Maximum Operating | |
| Temperature Range Optimal Operating |
–45 to +70 °C (–49 to +158 ° F) |
| Temperature Range | +10 to +30 °C (+50 to +86 ° F) |
| Dimension | 3.7 x 1.7 inches (94.0 x 43.2 mm) |
| Weight | 0.75 lbs (0.340 kg) |
The Woodward 9905-003 SPM-A Synchronizer is a phase-locked-loop device designed to match generator frequency, phase, and voltage with a utility bus or another generator. It automatically initiates breaker closure when synchronization conditions are met, ensuring precise, reliable, and efficient generator paralleling in industrial power systems.
This module is primarily used in generator control systems where multiple power sources must be synchronized for parallel operation.
Industrial Power Plants: Used to synchronize large diesel or gas engines and turbomachinery with the utility grid or other local power sources.
Marine & Offshore Systems: Ensuring stable power distribution on ships and offshore platforms by managing multiple generator sets.
Backup & Emergency Power: Automating the connection of emergency generators to a facility's power bus during utility failure.
Engine Control Integration: Often paired with other Woodward controls like the 2301, 2301A, or EPG (Electrically Powered Governor) systems for complete load sharing and speed control.
Phase-locked loop (PLL) synchronization
Provides precise matching of generator frequency and phase for accurate paralleling.
Integrated voltage matching (5% tolerance)
Ensures generator voltage aligns with bus voltage before breaker closure.
Multiple output signal options
Supports high impedance, low impedance, and EPG outputs for different governor/control systems.
Wide input compatibility
Accepts 115 or 230 Vac (50/60 Hz) for both generator and bus sensing.
Adjustable synchronization parameters
Features selectable phase window, match-up time, and voltage matching ranges for flexible applications.
Multiple operating modes
Includes RUN, CHECK, PERMISSIVE, and OFF modes for commissioning and operation control.
Automatic synchronization
Automatically synchronizes an off-line generator with a live bus or another generator by comparing voltage, frequency, and phase.
Speed (frequency) bias control
Adjusts generator speed via governor output to achieve frequency matching with the system.
Phase angle matching
Continuously monitors and aligns phase angle within a selectable window before allowing connection.
Voltage matching (for 9905-003: 5%)
Ensures generator voltage matches bus voltage within preset tolerance prior to breaker closure.
Automatic breaker closure control
Issues a relay contact signal to close the circuit breaker once synchronization conditions are satisfied.
Out-of-limit protection (synchronizing check)
Blocks breaker closing if frequency, phase, or voltage are outside safe limits, preventing unsafe paralleling.
Adjustable synchronization parameters
Allows configuration of phase window, voltage window, slip frequency, and match-up time to suit different generator dynamics.
Multi-mode operation
Supports RUN, CHECK, PERMISSIVE, and OFF modes for flexible commissioning and operation.
Q1: What is the main function of the Woodward 9905-003?
A1: The 9905-003 is an SPM-A synchronizer used to automatically match generator frequency, phase, and voltage with the utility bus or another generator before breaker closure.
Q2: Does the Woodward 9905-003 support voltage matching?
A2: Yes, this model includes voltage matching with a 5% tolerance, ensuring safe and accurate generator paralleling.
Q3: When does the 9905-003 close the circuit breaker?
A3: It automatically issues a breaker close relay signal only after frequency, phase angle, and voltage are all within preset synchronization limits.
Q4: What input voltage does the Woodward 9905-003 support?
A4: The unit supports 115 Vac or 230 Vac RMS, 50/60 Hz input for both bus and generator signals.
Q5: Which control modes are available on the 9905-003?
A5: The synchronizer supports RUN, CHECK, PERMISSIVE, and OFF operating modes for flexible commissioning and normal operation.
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