Description
1. Product Title
Woodward 8440‑2176 (SPM‑D2‑1040B/YB)‑ Microprocessor‑Based Generator Synchronizer Unit
2. Product Overview
The 8440‑2176 (SPM‑D2‑1040B/YB) is a panel‑mount digital three‑phase synchronizer from Woodward SPM‑D2‑10 series, designed for 400 VAC generator paralleling applications. It continuously measures generator and bus‑bar true‑RMS voltage, frequency and phase angle, and outputs discrete raise/lower bias signals to speed governor and AVR for automatic frequency, phase and voltage matching before circuit‑breaker closingWoodward. The integrated front‑panel LCD displays real‑time bus and generator parameters, built‑in synchroscope aids manual commissioning. Configuration can be done via local HMI or Woodward ToolKit software over USB interface, with multi‑level password protection for parameter security. It supports dead‑bus closure, breaker closing‑time compensation, synchronism‑check supervision, and can replace legacy SPM‑D10 synchronizer units directly. This device ensures safe and smooth generator synchronization, prevents out‑of‑phase closing damage to alternators and switchgear in power generation and co‑generation sites.
3. Technical Specifications
- Brand: Woodward
- Model: SPM‑D2‑1040B/YB, part number 8440‑2176Woodward G…
- Warranty: One Year
- Condition: 100% New & Original
- Measuring System: 3‑phase 4‑wire true‑RMS sensing, rated 400 VAC nominal system voltageWoodward
- Control Outputs: Discrete relay raise/lower outputs for speed and voltage adjustment
- Display: Dual‑line LCD, front‑panel synchroscope visual indicator, status LED lamps
- Configuration: Local front‑panel keypad; USB connection for Woodward ToolKit PC tool; password‑protected parameters
- Supported Functions: Auto‑synchronization, synchro‑check, dead‑bus close, breaker time compensation, slip‑frequency monitoring
- Auxiliary Power: Wide‑range power supply variant (‑YB type)
- Panel Cutout: Standard panel‑mount form factor for generator control cabinet doors
- Operating Temp: ‑20 °C ~ +70 °C
- Humidity: 5‑95 % RH non‑condensing
- Language: English / German built‑in firmware languages
- Compliance: CE, cUL‑UL certified
5. Application Scenarios
- Industrial Cogeneration Plant: Panel‑mounted synchronizer for diesel / gas‑engine gensets, performing automatic paralleling between on‑site generators and utility mains.
- Power‑House Emergency Generator System: Used for multi‑generator parallel operation, supervising phase‑frequency‑voltage matching to avoid destructive out‑of‑phase breaker closure.
- Marine & Off‑shore Power Cabinets: Deployed for on‑board generator synchronizing, working cooperatively with Woodward governors and automatic voltage regulators for island‑mode and grid‑connected power production.
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