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Monday, April 19, 2010

CE Marked Transformer

Mumbai, India based Hind Rectifiers Ltd offers High Voltage Transformer.


Hind Rectifiers offers the Hirect range of High Voltage Transformer rectifiers with CE certificate, or `CE markings’. This is an obligatory product mark for European economic area, which indicates compliance ‘certification’ according to the requirements formulated in the `CE Marking Directives’ of the European standards.

Therefore the CE mark in important for manufactures for placing products in European market. Hirect has obtained the `CE marking’ for ESP DC power supply consisting of High Voltage Transformer rectifier and SCR control panel with microprocessor controller. The DC power supply, manufactured for Nestle, Russia, has been designed for installation in sub zero temperatures. The transformer is filled with silicon oil and the control panel operates with Hirect’s proprietary microprocessor controller ACE-16. The CE certification testing was conducted by TUV Suddeutschland Group, Munich, Germany for compliance of the essential requirements under the EU directive 73/23 EEC.


Category : Power
J & P TRANSFORMER BOOKBy : Martin J Heathcote
ISBN: 978-0750681643
2007 , hard Cover , 0pp

Price: $ 265.00 INR 12,720.00

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Maintaining appropriate power systems and equipment expertise is necessary for a utility to support the reliability, availability, and quality of service goals demanded by energy consumers now and into the future. However, transformer talent is at a premium today, and all aspects of the power industry are suffering a diminishing of the supply of knowledgeable and experienced engineers.

Now in print for over 80 years since initial publication in 1925 by Johnson & Phillips Ltd, the J & P Transformer Book continues to withstand the test of time as a key body of reference material for students, teachers, and all whose careers are involved in the engineering processes associated with power delivery, and particularly with transformer design, manufacture, testing procurement, application, operation, maintenance, condition assessment and life extension.

Current experience and knowledge have been brought into this thirteenth edition with discussions on moisture equilibrium in the insulation system, vegetable based natural ester insulating fluids, industry concerns with corrosive sulphur in oil, geomagnetic induced current (GIC) impacts, transportation issues, new emphasis on measurement of load related noise, and enhanced treatment of dielectric testing (including Frequency Response Analysis), Dissolved Gas Analysis (DGA) techniques and tools, vacuum LTCs, shunt and series reactors, and HVDC Convertor transformers. These changes in the thirteenth edition, together with updates of IEC reference Standards documentation and inclusion for the first time of IEEE reference Standards, provide recognition that the transformer industry and market is truly global in scale.

Martin Heathcote is a consultant specializing in power transformers, primarily working for utilities.
In this context he has established working relationships with transformer manufactures on several continents. His background with Ferraanti and the UK’s Central Electricity Generating Board
(CEGB) included transformer design and the management and maintenance of transformer based systems.


CHAPTER 1 : TRANSFORMER THEORY – Introduction * The Ideal Transformer : Voltage
Ratio * Leakage Reactance : Transformer Impedance * Losses in Core and Windings * Rated Quantities * Regulation

CHAPTER 2 : DESIGN FUNDAMENTALS – TYPES OF Transformers * Phase Relationships : Phasor Groups * Volts Per Turn and Flux Density * Tappings * Impedance * Multi-Winding Transformers Including Tertiary Windings * Zero-Sequence Impedance * Double Secondary Transformers
* General Case of Three-Winding Transformer

CHAPTER 3 : BASIC MATERIALS – Dielectrics * Core Steel * Winding Conductors * Insulation
* Transformer Oil

CHAPTER 4 : TRANSFORMER CONSTRUCTION – Core Construction * Transformer Windings
* Dispositions of Windings * Impulse Strength * Thermal Considerations * Tappings and Tapchangers
* Winding Forces and Performance Under Short- Circuit * Tanks and Ancillary Equipment
* Processing and Dry Out

CHAPTER 5 : TESTING OF TRANSFORMERS – Testing and Quality Assurance during Manufacture * Final Testing * Possible additional Testing for Important Transformers * Transport, Installation and Commissioning

CHAPTER 6 : OPERATION AND MAINTENANCE – Design and Layout of Transformer Installations * Neutral Earthing * Transformer Noise * Parallel Operation * Transient Phenomena Occuring in Transformers * Transformer Protection * Maintenance in Service * Operation Under Abnormal Conditions * The Influence of Transformer Connections Upon Third-Harmonic Voltages
and Currents

Generator Transformers * Other Power Station Transformers * Transmission Transformers and Autotransformers * Transformers for HVDC Converters * Phase Shifting Transformers and
Quadrature Boosters * System Transformers * Interconnected Star Earthing Transformers * Distribution Transformers * Scott-and Le Blance-connected Transformers * Rectifier Transformers * AC arc Furnace Transformers * Traction Transformers * Generator Neutral Earthing Transformers * Transformers for Electrostatic Precipitators * Reactors

* Assessment of Tenders * Economics of Ownership and Operation


- Transformer Equivalent Circuit
- Geometry of The Transformer Phasor Diagram
- The Transformer Circle Diagram
- Transformer Regulation
- Symmetrical Components In Unbalanced Three-Phase Systems
- A Symmetrical Component Study o Earth Faults In Transformers In Parallel
- The Use of Finite Element Analysis In The Calculation of Leakage Flux And Dielectric Stress
- Distributions - List of National And International Standards Relating To Power Transformers
- List of Principal CIGRE reports and Papers Relating to Transformers
- List of Reports available from ERA Technology Ltd


© Copyright 2004. All Rights Reserved

Technical Bureau India Private Limited
E/261, Shastri Nagar,
Delhi-110052, India
Phone: 91-011-23649501, 23648477
Fax: 91-011-23648477



VPhase achieves CE Mark for smart voltage management device

Leading developer of energy saving products, VPhase, has achieved CE Certification for its new VX1 smart voltage management device, which is set to enhance energy efficiency in homes and SMEs as well as cut electricity bills, typically by 10% or more.

The CE Certification indicates that the VX1 product can now be legally placed on the market in the EU and that it complies with the relevant requirements of the European health, safety and environmental protection legislation.

VPhase CEO, Dr Lee Juby comments: "This is a major milestone for us at VPhase and we're extremely excited to have the green light to sell the VX1 to consumers. Although this technology has been established amongst large commercial energy users for some time, it has never been viable in domestic or small commercial premises until now. The VX1 allows smart voltage management to be cost effectively introduced into the home and we expect it will play a key role for all homes in the future, delivering significant reductions to electricity costs, energy wasting and carbon emissions."

VPhase is already working with two major UK utilities, Scottish & Southern Energy and British Gas, in preparation for what it anticipates will be a high demand from UK customers for the smart voltage management technology.

Tests have shown that the VX1 reduces the energy consumption of many household appliances by anything up to 20 per cent, which directly translates into an electricity cost saving as well as a reduction in carbon emissions. A typical house with gas heating could reduce the electricity consumption of the whole house by 10 per cent using the VX1.

The VX1 is expected to retail between £200 and £250. The costs of installation and the typical payback periods of between 3 and 5 years are similar to the upgrading of roof insulation from 50mm to 270mm.

Call 0845 003 8235

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