| Part Number |
9907-028 (Rev C / Rev E) |
| Official Product Name |
SPM-A Analog Speed & Phase Synchronizer Module |
| Core Function |
Generator genset frequency & phase matching for grid/paralleling breaker closing |
| Input Sensing Voltage |
115 / 230 VAC RMS, auto-adaptive |
| Voltage Tolerance Range |
±10% of rated AC input |
| Supported Grid Frequency |
50 Hz / 60 Hz dual universal |
| Frequency Synchronization Deviation Range |
±10% nominal frequency |
| Static Phase Matching Accuracy |
±5 electrical degrees |
| Max Allowed Phase Deviation Threshold |
±10 electrical degrees |
| Voltage Matching Function |
Not integrated (speed/phase only control) |
| Selectable Dwell Match-Up Time |
1/8 s, 1/4 s, 1/2 s, 1 s (factory default: 0.5 s) |
| Power Consumption |
≤ 5 W maximum |
| Built-in Control Output Channels |
High impedance output, Low impedance output, EPG dedicated output |
| Compatible Woodward Controllers |
2301, 2301A, 2500, EPG, EGA / EGM governor series |
| Operating Mode Selection |
OFF, RUN, CHECK, PERMISSIVE four switchable modes |
| Breaker Contact Resistive Rating |
10 A @ 28 VDC; 3 A @ 120 VAC (50/60 Hz) |
| Operating Temperature Range |
-45 °C ~ +70 °C |
| Optimal Stable Working Temp |
+10 °C ~ +30 °C |
| Storage & Transit Temperature |
-45 °C ~ +70 °C |
| Overall Dimension (W × H × D) |
292 mm × 171 mm × 57 mm |
| Net Unit Weight |
1.71 ~ 2.2 kg |
| Mounting Type |
Cabinet panel embedded mounting / DIN rail optional |
| Enclosure Protection Class |
IP20 (indoor switchgear cabinet installation) |
| Adjustment Potentiometers |
Phase Offset, Gain, Stability trimmers on front panel |
| Fail-Safe Logic |
Lockout circuit prevents breaker closing under out-of-sync condition |
| Manufacturing Origin |
United States |
| Typical Application Scenarios |
Diesel/gas generator grid paralleling, multi-genset bus synchronization, marine auxiliary power synchronization, industrial backup power transfer systems |
