The Woodward 9907-1182B is a 505 Enhanced Digital Governor for steam-turbine control applications. Woodward documentation identifies 9907-1182 as the AC/DC version of the 505 Digital Governor, designed for single or split-range actuator applications. Its power input is 88–132 VAC or 90–150 VDC, corresponding to the commonly described 125 VAC/DC configuration. The 9907-1182 version incorporates enhanced functions including pressure compensation, improved redundant-operation features, and revised “In-Control” selection logic.
| Specification | Details |
|---|---|
| Brand | Woodward |
| Model | 9907-1182B |
| Base Part Number | 9907-1182 |
| Product Name | 505 Enhanced Digital Governor |
| Series | 505 |
| Product Type | Steam Turbine Digital Governor / Controller |
| Power Supply | 88–132 VAC or 90–150 VDC |
| Nominal Rating | 125 VAC/DC |
| Application | Steam Turbine Control |
| Actuator Support | Single or Split-Range Actuators |
| Display | LED Display |
| Control Functions | Speed, load, pressure and related turbine control functions |
| Conformal Coating | Polyacrylate conformal coating on applicable revisions |
| Condition | New Surplus / Original New |
| Discontinued | Manufacturer-discontinued / legacy product |
Recommended Related Woodward Models: 9907-1181 – 505 Enhanced Digital Governor, HVAC power version; 9907-1183 – 505 Enhanced Digital Governor, LVDC version; 8923-1704 – 505 Marine LVDC Controller; 9907-825 – Earlier 505 HVAC Governor; 9907-826 – Earlier 505 AC/DC Governor; 9907-827 – Earlier 505 LVDC Governor; 9907-163 – 505 Digital Governor; 9907-164 – 505 Digital Governor; 9907-165 – 505E Digital Governor, HVAC; 9907-166 – 505E Digital Governor, AC/DC. Woodward specifies that the 9907-1181/1182/1183 series replaced earlier part numbers and that these versions should not be mixed with the earlier part-number versions in applications requiring the specified configuration.
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