Complete Substation
Transformer
Transformer being one of the most important equipment used in power lines to ensure uninterrupted core activities of nearly every business and factory otherwise they would come to a standstill with serious financial consequences. In concert with the transformer; HT Switchgear, LT Switchgear & PFI helps step up or step down the voltages wherever necessary. All these equipment are manufactured with high quality material in a latest technological environment that meets the national and international standards.
The transformers are designed, manufactured and tested in accordance with IEC 60076, ANSI C57.12, VDE 0537, BS-171 & HD428 standards. The Oil type Transformers range from 50 KVA to 5000KVA with primary voltage 11kV/33kV. The technical data are as follows:
HT SWITCHGEAR: High Tension Switchgear
Basic Function:
- High Voltage (11KV) Controlling or Switching
- Protection (Over Load , Short Circuit, Earth Fault or any Electrical Fault
- Status reading (current ,voltage ,frequency)
Main Features:
- VCB, LBS, SF6 circuit breaker and switchboards are of optimized design considering
- Bangladeshi supply condition and ambient.
- The Breaker and switchboard is of compact design , sturdy construction and simple in operation with a proven motorized spring operated mechanism.
- Design ensures ease of operation, low cost maintenance and higher longevity.
- Very high quality ring main unit (RMU) suitable for highly populated city like Dhaka for multiple feeders in incoming and outgoing are used.
- Equipped with built-in mechanical interlocks for safety and the breaker compartment is so designed, that it ensures the inter chargeability with the identical circuit breakers .
- The panels are fully compartmentalized and extensible on both sides
Adequate air clearance - FIXED TYPE & DRAW-OUT TYPE.
LT Switchgear Low Tension Switchgear
Basic Function:
- Controlling Or Switching
- Protection (Over Load, Short Circuit , or Any Electrical Fault)
- Status reading (Current ,Voltage ,Frequency)
- Power Distribution
Main Features:
- Readymade & Customized Solutions for load management.
- Modular construction & compact size provides economy of space, time & cost.
- In single door & double door version.
- Designed for floor mounting /wall mounting.
- Specially designed shrouded bus bar provides safety.
- Number of ways option permits future system expansion.
- Use of quality raw materials & sourcing from reputed manufacturers.
- Elegant & sleek in appearance.
PFI (Power Factor Improvement)
The Automatic Power Factor Correction Panel with 30 sensing and correction is the ideal solution for larger loads and accurate correction to maintain high Power Factor, reduce KVA requirement and save Power.
Special Features
- Sturdy Powder coated panel for long life.
- MCCB Incomer, each stage provided with MCB and Contractor and efficient design to limit inrush currents.
- Heavy Duty Capacitors with long life and minimum losses.
- Easy and efficient installation for good energy savings.
- Available from 25 Kvar at 440V onwards to 3000 Kvar at 440 volts from 3 stage up to 12 stages.
What is Power Factor Correction, and why might you need it?
Put simply, Power factor is the ratio of “usual power” to “total power” consumed by electrical equipment. Any electrical equipment requiring the creation of a magnetic field to operate – such as AC motors, induction heaters and other transformer applications – will draw a current which is said to lag behind the voltage, thus producing a “lagging” power factor. On the other hand, capacitors, contained in most power factor correction equipment, draw current that is said to lead the voltage, thus producing a “leading” power factor. If capacitors are connected to a circuit that operates at a nominally lagging power factor, the extent that the circuit lags is reduced proportionately to the amount the capacitors lead. Circuits having no resultant leading or lagging component are said to operate at a unity power factor – where the total energy consumed is equal to the usual energy. Most commercial electricity users are also subjected to an additional charge for reactive energy – generally referred to as an “availability” charge. Reactive energy is effectively the power used to energize the magnetic fields in motors, inductive heaters and so on. While the useful energy is measured in kilowatts (kW), the reactive part is measured in kilovoltampsreactive (kVAr). It is the aim when specifying and installing power factor correction equipment to reduce the reactive energy drawn from the system. It is not uncommon for industrial installations to be operating at power factor between 0.7 and 0.8 (that is between, 70% and 80% efficiency) – clearly there would be cost & efficiency benefits from installing power factor correction measure.
