Package substations
Compact substations are used for energy transfor-mation in secondary distribution network from MV to LV or LV to MV.
CSS is a comprising an enclosure containing medium voltage (MV) switchgear, distribution transformer, low voltage (LV) switchboard, connections and auxilia-ry equipment to supply low voltage energy from me-dium voltage systems. These substations are typically installed in locations accessible to the public and en-sure protection for all people according to specified service conditions.
Salient Features
- Easy to install , operate and maintain
- Tailored configuration to meet customers require-ment
- Compact and occupies less floor space
- Design to with stand electrical impulse and ther-mal and dynamic stress
- Fully compartmentalized design
Main Advantages
- Reduced Electrical Losses as CSS can be provided near load center.
- A high degree of safety and operational reliability is achieved by HT and LT switch gears and protection relays to avoid over-loading
- Low civil / foundation cost
- Reduction in logistic cost as CSS is deliv-ered as a single unit
This type of transformer is used in applications where the transformer is to be installed in harsh climatic conditions (smoke, pollution, dusty environment,etc.) or if the transformer is KNAN cooling type.
Auto Transformer
An autotransformer (sometimes called auto step down transformer) is an electrical transformer with only one winding. In an autotransformer, portions of the same winding act as both the primary and secondary sides of the transformer.
lightening transformers
Electrically isolating of the lighting load from main load. Better control on protection systems due to separation of neutral of lighting load & main load