Products Description
| Company Information | |||
| [email protected] | |||
| Mobile | +8613950166376 | ||
| +8613950166376 | |||
| 13950166376 |
Technical Specifications
| Parameter | Description |
|---|---|
| Product Name | Automatic Synchronizer |
| Model Number | 9905-946 |
| Brand | Woodward |
| Product Type | Digital Automatic Synchronizer |
| Function | Automatically synchronizes generator frequency, voltage, and phase with the utility or another generator before connection |
| Synchronizing Range | ±10% frequency and ±15% voltage difference |
| Phase Matching Accuracy | ±1° typical |
| Frequency Range | 45–65 Hz |
| Voltage Input Range | 90–480 VAC |
| Control Output | Raise/lower speed and voltage contact outputs |
| Operating Modes | Automatic and manual synchronization |
| Communication Interface | RS-232 for configuration and diagnostics |
| Indicators | LED indicators for synchronization status and system faults |
| Protection Features | Over-voltage, under-voltage, over-frequency, phase error, and relay protection |
| Response Time | < 1 second (typical for stable frequency conditions) |
| Power Supply | 18–32 VDC nominal |
| Power Consumption | 15 W typical |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -55°C to +105°C |
| Humidity | Up to 95% non-condensing |
| Mounting Type | Panel mount |
| Enclosure Rating | IP54 |
| Dimensions | 300 x 200 x 250 mm |
| Weight | 0.8 kg |
FAQ
FAQ
Q1: What is the main function of the Woodward 9905-946 Automatic Synchronizer?
A1: The 9905-946 automatically matches the generator’s frequency, voltage, and phase angle with the bus or another generator, ensuring safe and smooth synchronization before circuit breaker closure.
Q2: How does the 9905-946 achieve synchronization accuracy?
A2: It uses digital phase-locking algorithms to continuously compare the generator and bus parameters, adjusting speed and excitation until the phase difference is within ±1°.
Q3: What type of systems can this synchronizer be used with?
A3: The module is suitable for use with diesel and gas engine-driven generators, turbine systems, and marine power management systems requiring automatic synchronization.
Q4: Can the 9905-946 be integrated with external control systems?
A4: Yes, it includes an RS-232 communication interface allowing integration with Woodward governors, voltage regulators, and supervisory control systems.
Q5: What happens if the synchronizer detects unsafe synchronization conditions?
A5: If voltage, frequency, or phase deviation exceeds preset limits, the unit blocks breaker closure and indicates a synchronization fault to prevent equipment damage.
Q6: How does the device handle dual or parallel generator operation?
A6: It can manage parallel operation by automatically synchronizing multiple generators sequentially to a common bus, ensuring balanced load sharing after synchronization.
Q7: Is there a manual synchronization option available?
A7: Yes, the 9905-946 supports manual control through front panel switches or remote operator panels for field calibration or emergency operation.
Q8: What are common applications of the Woodward 9905-946 Automatic Synchronizer?
A8: It is commonly used in power plants, industrial generator systems, marine vessels, and backup power installations where precise and safe generator synchronization is essential.
Tags
Packing & Delivery
We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.
For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.
Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.
