Key facts
- Brand
- Siemens
- Model
- 8DN8
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-03-16
Start here
SIEMENS HIS Highly Integrated Switchgear up to 145 kV 40 kA 3150 A Type 8DN8 Manual
The HIS (Highly Integrated Switchgear) 8DN8 is a compact, gas‑insulated solution for indoor and outdoor substations. It occupies less than half the space of comparable air‑insulated switchgear, making it ideal for space‑constrained projects and for upgrades while the system remains in service.
The switchgear uses SF6 gas for insulation, features corrosion‑resistant aluminum castings, and includes integrated circuit‑breakers, disconnectors, and earthing switches. Technical data include a rated voltage up to 145 kV, short‑breaking current of 40 kA, and an expected service life of over 50 years.
Siemens 8DN8 specifications
| Rated voltage | up to 145 kV |
|---|---|
| Rated frequency | 50/60 Hz |
| Rated lightning impulse withstand voltage | 650 kV (1.2/50 µs) |
| Rated short‑breaking current | 40 kA |
| Rated short‑time withstand current | 40 kA |
| Expected lifetime | > 50 years |
| Standards | IEC/HEEE |
Source: SIEMENS HIS Highly Integrated Switchgear up to 145 kV 40 kA 3150 A Type 8DN8 Manual
All Siemens 8DN8 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the rated voltage of the 8DN8 HIS switchgear?
It is rated for up to 145 kV.
From: SIEMENS HIS Highly Integrated Switchgear up to 145 kV 40 kA 3150 A Type 8DN8 Manual
How much space does the HIS switchgear save compared to air‑insulated switchgear?
It requires less than half the space of a comparable air‑insulated switchgear.
From: SIEMENS HIS Highly Integrated Switchgear up to 145 kV 40 kA 3150 A Type 8DN8 Manual
What is the rated voltage of the 8DN8 switchgear?
It is rated for up to 145 kV (with a lower version at 72.5 kV).
From: SIEMENS Gas-Insulated Switchgear up to 145 kV 40 kA 3150 A Type 8DN8 Manual
What gas is used as the insulating medium?
Sulphur hexafluoride (SF6) is used as the insulating and arc‑quenching medium.
From: SIEMENS Gas-Insulated Switchgear up to 145 kV 40 kA 3150 A Type 8DN8 Manual