GB 3906-1991
A.C.metal-enclosed switchgear for rated voltages of 3~35kV
- Standard No.
- GB 3906-1991
- Language
- Chinese
- Release Date
- 1991
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2007-03
- Replace By
- GB 3906-2006
- GB/T 3906-2006
- Latest
- GB/T 3906-2020
- Scope
- This standard specifies the requirements for the service conditions, ratings, design and structure, type test and delivery test of metal-enclosed switchgear. This standard applies to indoor or outdoor metal-enclosed switchgear with a rated voltage of 3-35kV and a frequency of 50Hz. This standard applies to metal-enclosed switchgear with atmospheric insulation (including composite insulation), and also to metal-enclosed switchgear with a design pressure of the air-filled compartment not exceeding 0.3MPa (gauge pressure); for design pressure exceeding 0.3MPa ( Gauge pressure) inflated compartments shall be designed and tested according to the provisions of GB7674; for metal-enclosed switchgear of 35kV above 63kV and below which are insulated by the atmosphere and the design pressure of the inflatable compartments does not exceed 0.3MPa (gauge pressure), it can be Follow this standard. Metal-enclosed switchgear for special purposes shall comply with the provisions of this standard, and the items of special requirements shall be negotiated between the user and the manufacturer.
GB 3906-1991 history
- 2020 GB/T 3906-2020 Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6 kV and up to and including 40.5 kV
- 2006 GB 3906-2006 Alternating-current metal-enclosed switchgear and controlgear for rated voltages above 3.6kV and up to and including 40.5 kV
- 1991 GB 3906-1991 A.C.metal-enclosed switchgear for rated voltages of 3~35kV