SDEC
SDEC SC25K990D2
K Series
The SDEC SC25K990D2 is a 25-litre inline-6 diesel engine for generator sets, rated at 816 kVA / 653 kWe standby power at 1,500 RPM (50 Hz). It is a liquid-cooled engine built in China.
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- Manufacturer files
- 2 datasheets
- Last updated
- 2026-07-24
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 816 kVA
- Electrical Output
- 653 kWe
- Cylinders
- L6
- Displacement
- 25 L
- Rated Speed
- 1,500 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 660 | 594 | 742.5 |
| Standby Power | 726 | 653 | 816.3 |
SDEC SC25K990D2 generator set context
The SDEC SC25K990D2 is listed here as a diesel generator-drive engine for 50 Hz generator sets, with a headline 816 kVA / 653 kWe / standby rating. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.
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Technical Specifications
| Brand | SDEC |
| Model | SC25K990D2 |
| Series | K Series |
| Configuration | L6 |
| Cylinders | 6 |
| Displacement | 25 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | China National Stage II / Unregulated |
| Country of Origin | China |
Frequently asked questions
What is the power output of the SDEC SC25K990D2?
The SDEC SC25K990D2 is rated at 816 kVA standby / 743 kVA prime at 50 Hz (1,500 rpm).
Does the SC25K990D2 run at 50 Hz or 60 Hz?
The SDEC SC25K990D2 is rated for 50 Hz (1,500 rpm).
What fuel does the SDEC SC25K990D2 use?
The SDEC SC25K990D2 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the SC25K990D2?
The SDEC SC25K990D2 is an inline-6 (6-cylinder) engine with a displacement of 25 L.
Is the SDEC SC25K990D2 still in production?
Yes — the SDEC SC25K990D2 is a current production model.
Is a datasheet available for the SC25K990D2?
Yes — an official SDEC datasheet for the SDEC SC25K990D2 can be downloaded from this page.