Power Control Centers
These Panels distribute the Transformer /DG supplied Power to various Load Centers Form as Master Controls to such Distribution and Sub-Distribution Board.
Some types of PCC are as:
• Circuit breaker Panel in single or Two tier Formation
• SFU/MCCB’s in multi tier Formation
• Combination of both.
They are provided with suitable mechanically and/ or electrically interlocks to achieve various complicated forms of supplies.
Some types of PCC’s are illustrated in the accompanying photographs.
Most important of the lot could be double bus bar Panel which is very versatile in the use of DG/EB supply very effectively at will. Such Panels can be offered as manually/remote operation by use of motorized changeover switches, electrically operated ACB/MCCB/Contactors. This entire Panel uses changeover arrangement for pickup of supply from EB to DG or vice versa. Here some of the load could be running on EB and some on DG at the same time. This may help for specialized Load to run on DG and others on
EB. When Power cuts are instituted by electricity authorities such Panels help a lot. We manufacture Duplex and Walk way Panels and
Metering of such Panels with feeder interlocking can be done as per customer needs.
For Details of Interlocks, we may be personally contacted. Any type Castell Interlock or Rope Type Interlock or Self-Contained Mechanical Interlocks could be instituted.
The mimic diagrams of PCC/MCC could also be developed using Semaphores/lamps. We always use Class 1 CT’s for metering with adequate VA capacity depending upon the meters put in series. We use 5P10 or 10P10 CT’s for protection of relays. Where restricted Earth Fault or Differential Relays are concerned, we use Class PS CT’s wherein mention of knee point voltage and the no load current at knee point voltage will become mandatory.