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Electrical Sub Station Equipments PDF Print E-mail
Sunday, 10 May 2009 15:06
Introduction
PowerCom is a professional manufacturer of electrical & electronic equipments with proven design. PowerCom boasts a highly professional R & D team comprising of senior engineers & experienced technologist which enables the company to apply the most advanced technologies to its production of high performance Sub-station equipment. The company is committed to meeting requirements from all kinds of customers, redesigning and tailor-making its products. PowerCom products are well-known on the markets and have been widely meet with the requirement in such fields as all types of Industries, Apartment, Defence, Bangladesh Power Development Doard (BPDB), Dhaka Electric Supply Authority (DESA ) & Rural Electrification Board ( REB ). Meeting Your Needs With Our Technological Co-Operation.

A World Class Sub Station
D e s i g n e d F o r H o s t i l e
Bangladesh Power Conditions

Corporate ActivitieCorporate Activities
Design, Procurement and Production of Sub-station equipment with service, operation and maintenance. Manufacturing of power & electronic product for regulated & back up power supply. Import, Distribution, Service with spare parts of low voltage, medium voltage & high voltage switchgear, control and protection equipment.
Transformer
PowerCom Transformers are naturally self cooled or forced air/oil cooled, suitable for outdoor or indoor, core type or shell type both for single phase/three phase. Our transformers are of rated voltage 11/0.415KV, 6.35/0.24KV & 11/0.24KV have passed the impules withstand voltage test successfully at Bangladesh University of Engineering & Technology (BUET)
Capacity
1-Phase, up to 150 KVA, 50Hz
3-Phase, 50KVA to 10MVA, 50Hz
System Voltage :
Generally 11/0.415KV, 6.35/0.24KV& 33/0.415KV
As per customer requirement.
Standard :
Manufactured & Tested as to Iec-76, Bs 171, Ansi, C 57.12 Or Vde-0532
Accessories :
High/Low tension bushing with connectors
Tap changer (off load/on load)
Conservator
Radiator
Oil level indicator
Lifting lug
Temperature Meter
Silicagel Breather
Name plate with connection diagram
Earthing Bolts
Drain Valve
Buchholz Relay for higher capacity

High Tension (Ht) Switchgear

PowerCom High Tension Switchgear equipped with Minimum Oil Circuit Breaker (MOCB), Vacuum Circuit Breaker (VCB) & Load Break Switch ( LBS ), and confirm to IEL, BS, VDE, DIN & ANSI standard. They are designed in co-ordination to over voltage due to lightning & transients for highest system voltage of 12 KV & current rating from 630A to 1250A. The Panel Boards are made of strong sheet steel at all sides with iron angles & channels weded together. They are painted in accordance with general practice and recognized methods to meet the tropical conditions at site. Potential transformer (PT), Current Transformer (CT), Earthing Switch, The main unit & other components are imported from America, Germany, France, Italy, UK & Japan or as per the choice of the valued customers.
Technocal Specifications
 
 
LOW TENSION (LT) SWITCHGEAR
PowerCom Low Tension Switchgear (415V,30, 50HZ ) equipped with Circuit Breaker, Hard Drawn Electrolytic Copper Busbar, Ammeter, Voltmeter, Selector Switch & Indicating Lamps & confirm to IEC-947-2, BS, DIN & ANSI standard. Totally enclosed the cubicle will be painted with corrosion,chemical resistant & anti rust paint panels are designed to withstand the mechanical & thermal stress produced by current. All live parts are adequately protected against accidental touching, interior wiring with minimum cross sectionl area of 0.75 mm2 is accommodated in plastic conduits.
POWER FACTOR IMPROVEMENT PLANT (PFI PLANT)
PowerCom Power Factor Improvement Plant conforming to IEC-439-2, VCK, DIN & ANSI tandards is of sheet steel clad, dust & vermin proof, free standing, floor mounting indoor ype. The centrally controlled automatic PFl plant is of compact design and suitable for operation in 6/9/12 steps in the system for automatic control of the reactive power.
The control unit is an integral part of the PFI plant comprising of Current Transformer of dequate rating. Automatic Power Factor Correction Relay to keep the power factor almost constant at 0.99 & independent of load fluctuations having in built digital power factor meter, indicating lamps, ON/OFF switches, switching step, indicators etc are included. It also have an option of manual control of power factor at a target value.
All components are shipped from Germany, America, France, Italy, Uk & Japan or as per our valued customers
requirement.
 
Shielded Isolation Transformer PDF Print E-mail
Sunday, 10 May 2009 15:06
Introduction
Isolation Transformers have primary and secondary windings that are physically separated from each other. It offers hundred percent isolation from the input AC line. It reduces the cumulative leakage current of the isolator and connected equipment. Secondary neutral to ground bonding virtually eliminates common mode noise, providing an isolated neutral- ground reference for sensitive equipment. This is also known as 'insulated' because the windings are insulated from each other. Isolation transformers remove EMI/RFI noise, utility switching transients, and harmonics generated by other onsite loads and utility or lightning related surge conditions.
Uninterruptible Power Supply (UPS)


Hundred Percent Isolation
Built-In Electrostatic Shield
Eliminates Common Mode Noise
Removes Transient Noise
Attenuates Voltage Spike & Surge
Reduces Leakage Current
Improves Power Quality

Shielded isolation transformers have all the feature of the standard isolation transformers
plus it also incorporates a full metallic shield between the primary and secondary windings.
This electrostatic shield 'faraday shield' is connected to earth ground. It attenuates (filters)
voltage transients (voltage spikes) and filters common mode noise. The shielded isolation
transformer is preferred over a standard isolation transformer because it provides protection for sensitive and critical equipment and vastly improves power quality. Additional surge suppression components placed at the line input and output combined with full line
isolation offers continuous filtering of a full range of power line noise in all modes.
Technocal Specifications
 
 
OTHER TRANSFORMER : » SINGLE PHASE TRANSFORMER » THREE PHASE TRANSFORMER
» BUCK BOOST TRANSFORMER » STEP DOWN TRANSFORMER » STEP UP TRANSFORMER
» HIGH VOLTAGE TRANSFORMER » AUTO TRANSFORMER » INSULATION TRANSFORMER
» DISTRIBUTION TRANSFORMER.
 
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Products Gallery

  • Automatic Voltage Stabilizer (AVS)
  • Uninterruptible Power Supply (UPS)
  • Instant Power Supply (IPS)
  • True On-Line UPS
  • Automatic Battery Charger/Rectifier
  • Automatic Industrial Voltage Stabilizer
  • Network CCTV
  • Shielded Isolation Transformer
  • Electrical Sub Station Equipments