Description
Manufacturer: Woodward
Part Number: 8440-2165
Model Alias: SPM-D2-1115B/LSXR
Product Type: Microprocessor Generator Synchronizer & Load Share Controller
Product Overview
The 8440-2165 is a digital synchronizer and load sharing unit from Woodward SPM-D2 series, designed for two-phase or three-phase AC generator sets. It continuously monitors voltage, frequency and phase angle between generator and busbar, automatically adjusting governor and AVR to match conditions and close the breaker at optimum synchronizing point. It also provides load sharing and power factor control for multiple paralleled generators in power plants and islanded power systems.
Technical Specifications
| Parameter | Value |
|---|---|
| Voltage Input | 100 V AC nominal generator / bus voltage sensing |
| Frequency Range | 40–70 Hz |
| Auxiliary Power Supply | 24 V DC |
| Contact Rating | AgCdO relay contacts; 2 A @24 V DC |
| Communication | RS232 / RS422, Modbus |
| Mounting | Panel flush mount, DIN 43700 standard cutout |
| Dimensions | 142 × 72 × 122 mm |
| Weight | Approx. 0.8 kg |
| Front Panel Rating | IP42; Rear terminal area IP20 |
| Operating Temperature | -20 °C ~ +70 °C |
| Humidity | 10–90% RH, non-condensing |
| Certification | CE, UL/cUL |
| Country of Origin | USA |
Key Features
- Automatic synchronizing, frequency matching and voltage matching for generator paralleling.
- Built-in load sharing and power factor regulation for multi-generator parallel operation.
- Multi-line LCD front panel with keypad for local parameter setup, measurement readout and status indication.
- Adjustable synchronizing window, phase angle and slip frequency limits with anti-sync blocking protection.
- Comprehensive alarms: out-of-limit voltage, frequency, phase, loss of sensing signal.
- Serial communication for SCADA integration, remote configuration and event logging.
- Robust EMC design to withstand high EMI environments in power generation facilities.
Application Scenarios
- Combined-cycle power plant generator paralleling control
- Industrial backup generator island & grid parallel systems
- Oil & gas offshore and on-site power generation
- Multi-engine generator stations with load sharing requirement
- Marine vessel main generator synchronization
Installation & Maintenance Notes
- Use separate voltage sensing wiring for generator and bus; maintain proper voltage transformer polarity.
- Isolate PT circuits before wiring to prevent dangerous secondary voltage exposure.
- Configure synchronizing limits and load sharing gains during commissioning, test close-on-sync function.
- Verify all alarm trips and inhibit logic before placing generator in auto parallel mode.
- Keep front panel display and keypad clean; avoid high moisture and dust ingress.
- Backup configuration parameters before unit replacement or firmware update.
- Check PT fuses and wiring terminals periodically during scheduled outages.
FAQ
Q: What is the full model alias of 8440-2165? A: SPM-D2-1115B/LSXR, supporting synchronizing plus load share and power factor control.
Q: Does this unit work for both grid-parallel and island mode? A: Yes, it handles generator synchronization to utility grid and load sharing for islanded multi-generator operation.
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