Key facts
- Brand
- Siemens
- Model
- 8DN9
- Industry
- Industrial
- Documents
- 2
- Languages
- EN · ZH
- Last added
- 2012-03-16
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SIEMENS Gas-Insulated Switchgear up to 245 kV 50 kA 3150 A Type 8DN9 Manual
The 8DN9 gas‑insulated switchgear combines a compact design with high reliability, low operating costs and a long service life. It uses SF6 gas for insulation and arc‑quenching, offers modular construction, and can be installed in sensitive environments such as residential areas.
The document describes the modular system, circuit‑breaker and interrupter units, disconnecting and earthing switches, instrument transformers, and termination modules. Technical data for voltage, current, impulse withstand ratings, leakage rate, temperature range and expected lifetime are provided.
Siemens 8DN9 specifications
| Rated voltage | up to 245 kV |
|---|---|
| Rated frequency | 50/60 Hz |
| Power frequency withstand voltage (1 min) | 460 kV |
| Lightning impulse withstand voltage (1,2/50 µs) | 1,050 kV |
| Switching impulse withstand voltage (250/2500 µs) | 850 kV |
| Rated normal current (busbar) | up to 3,150 A |
| Rated normal current (feeder) | up to 3,150 A |
| Rated short‑breaking current | up to 50 kA |
| Rated peak withstand current | up to 135 kA |
| Leakage rate per year and gas compartment | ≤ 0.5 % |
| Ambient temperature range | –25 °C to +40 °C |
| Expected lifetime | > 50 years |
| Switchgear type | 8DN9 |
Source: SIEMENS Gas-Insulated Switchgear up to 245 kV 50 kA 3150 A Type 8DN9 Manual
All Siemens 8DN9 documents by type
Disassembly, diagnostics and part numbers, for repair.
Questions answered in these manuals
What is the rated voltage of the Siemens 8DN9 gas‑insulated switchgear?
It is rated for voltages up to 245 kV.
From: SIEMENS Gas-Insulated Switchgear up to 245 kV 50 kA 3150 A Type 8DN9 Manual
What short‑circuit breaking current can the 8DN9 handle?
The switchgear can break short‑circuit currents up to 50 kA.
From: SIEMENS Gas-Insulated Switchgear up to 245 kV 50 kA 3150 A Type 8DN9 Manual
What is the rated voltage of the 8DN9 GIS?
The 8DN9 GIS is rated for 252 kV.
From: SIEMENS gas Insulation metal Seal Close Switch equipment to 252kV 50kA 3150A Number 8DN9 Manual