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Woodward 9907-028 Generator Synchronizer
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Warranty：1 year
Condition：Brand new and factory sealed
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Detail
- Product NameWoodward 9907-028 Generator Synchronizer
- Item NO.9907-028
- Weight1.7400 kg = 3.8360 lb = 61.3767 oz
- CategoryOTHER
- BrandOTHER
- Creation Time2026-10-28
- Woodward 9907-028: Speed and phase synchronization for generator paralleling, without voltage matching.
9907-028
Speed and phase synchronization for generator paralleling, without voltage matching.
Contact info
Specifications
| Bus and generator voltage inputs | 115 or 230 VAC RMS |
| Input frequency | 50/60 Hz |
| Input voltage tolerance | ±10% |
| Power consumption | 5 W maximum |
| Phase-match window | ±10° |
| Voltage-matching configuration | No voltage matching |
| Resistive DC contact rating | 10 A at 28 VDC |
| Resistive AC contact rating | 3 A at 120 VAC, 50/60 Hz |
| Inductive DC contact rating | 6 A at 28 VDC |
| Inductive AC contact rating | 2 A at 120 VAC, 50/60 Hz |
| Breaker-close command duration | Approximately 1 second |
| Selectable match-up time | 1/8, 1/4, 1/2 or 1 second |
| Factory match-up time | 1/2 second |
| Operating temperature | -45 to +70 °C |
| Optimal operating temperature | +10 to +30 °C |
| Operating mode selections | RUN, CHECK, PERMISSIVE and OFF |
| Reset behavior | Automatic reset |
| Breaker-close contact | Normally open |
| High-impedance control interface | Woodward 2301 load-sharing controls |
| Low-impedance control interface | 2301A, EPG and 2500 load-sharing controls |
| Direct EPG control interface | EPG controls without load sharing |
| UL listing file | E97763; agency marking on unit required |
| Minimum signal-wire cross-section | 0.5 mm² (20 AWG), stranded twisted shielded wire |
| Generator PT phase terminal | Terminal 2 |
| Generator PT neutral terminal | Terminal 5 |
| Bus PT phase terminal | Terminal 6 |
| Bus PT neutral terminal | Terminal 9 |
| High-impedance output terminals | 20 (signal) and 21 (common) |
| Low-impedance output terminals | 22 (signal) and 21 (common) |
| EPG output terminals | 24 (signal) and 23 (common) |
| Breaker-close relay terminals | 14 and 15 |
Input taps, governor output interface and dwell settings must match the installation. Listed agency approvals apply only to units bearing the corresponding marking.
Description
Woodward 9907-028 provides speed and phase matching in the SPM-A synchronizer family. This configuration does not include voltage matching. It biases the off-line generator speed to align with the bus before issuing the breaker-close signal. Selectable dwell timing helps coordinate the synchronization sequence. The synchronizer can interface with appropriate Woodward load-sharing and governor controls. Generator installations require the correct output connection and system checkout.
Speed & Phase Matching
Match the off-line generator to the live bus before breaker closure.
This version performs speed and phase matching without voltage-matching outputs.
Generator Paralleling
Synchronize an off-line generator with a live bus before closing its circuit breaker.
Use an appropriately engineered SPM-A installation to synchronize paralleled generator units to another bus.
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