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Provides the future purchaser with information allowing him to prepare the required documents, from the call for tenders up to acceptance tests and operation of electromechanical equipment. Applies to installations having outputs of less than 5 MW and turbines with diameters less than 3 m.
The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on. They have the form of recommendations for international use and they are accepted by the National. In order to promote international unification, the IEC expresses the wish that all National Committees. Any divergence between the IEC recommendation and the corresponding national rules should, as.
In the. For low head plants with short intakes, care must be taken in the design of the intake in order to obvi-. Describes an architectured application layer used for communication with metering equipment. The associated physical medium and lower layer protocols in a collapsed three-layer model are unspecified. This is a Technical Report type 2. IEC specifies the requirements of paper tape covered rectangular aluminium winding wires.
This covering consists of two or more layers of paper tape and is primarily intended for winding coils for oil immersed transformers. The range of nominal conductor dimensions covered by this document is: — width: min. IEC specifies the requirements of paper tape covered round copper winding wires. The range of nominal conductor diameters covered by this document is: — 0, mm up to and including 5, mm. The nominal conductor diameters are specified in Clause 4 of IEC The paper tapes included in this document are restricted to those specifie IEC E specifies the dimensions of magnetic powder cores.
This document also gives guidelines on the allowable limits of surface irregularities of magnetic powder cores. It is considered as a general specification useful in the dialogue between magnetic powder core manufacturers and users about surface irregularities. It is intended that this document will include magnetic powder cores which are widely used and referenced in industry, either because they are included in national st IEC is available as IEC RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
It specifies the requirements for type CATV drop cables. Series Q4. This type of Your shopping cart is empty!
Back Dec Abstract French Slovenian Provides the future purchaser with information allowing him to prepare the required documents, from the call for tenders up to acceptance tests and operation of electromechanical equipment. Electromechanical equipment guide for small hydroelectric installations. Publication Date.
Technical Committee. Current Stage. Completion Date. Ref Project. Buy Standard. They have the form of recommendations for international use and they are accepted by the National Committees in that sense. In order to promote international unification, the IEC expresses the wish that all National Committees should adopt the text of the IEC recommendation for their national rules in so far as national conditions will permit. Any divergence between the IEC recommendation and the corresponding national rules should, as far as possible, be clearly indicated in the latter.
The text of this standard is based on the following documents: Six Months' Rule Repo rt on Voting 4 CO 51 4 CO 46 Full information on the voting for the approval of this standard can be found in the Voting rt indicated in the above table. Repo Annex A is for information only. These figures do not represent absolute limits. This guide deals only with the direct relations between the purchaser or the consulting engineer and the supplier. It does not deal with civil works, administrative conditions or commercial conditions.
This guide is intended to be used by all concerned in the installation of electromechanical equipment for small hydroelectric plants. This guide, based essentially on practical information, aims specifically at supplying the purchaser of the equipment with information which will assist him with the following: preparation of the call for tenders; - evaluation of the tenders; - contact with the supplier during the design and manufacture of equipment; - quality control during the manufacture and shop-testing; - follow-up of site erection; - commissioning; - acceptance tests; - operation and maintenance.
The guide comprises the following: a general requirements for the electromechanical equipment of small hydroelectric installations; b technical specifications for the electromechanical equipment, excluding its dimen- sioning and standardization; c requirements for acceptance, operation and maintenance. Bearing in mind the type of installation considered, the documents shall be as simple as possible but must satisfactorily define the particular operation conditions.
Over-speci- fication is harmful to the economy of the project. At the time of publication of this standard, rties to the editions indicated were valid. All standards are subject to revision, and pa agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
IEC , Rotating electrical machines - Pa rt 2: Methods for determining losses and IEC , Rotating electrical machines - Pa efficiency of rotating electrical machinery from tests excluding machines for traction vehicles. First supplement: Measurement of losses by the calorimetric method. Field acceptance tests to determine the hydraulic performance of hydraulic IEC , turbines, storage pumps and pump-turbines. High-voltage alternating-current circuit-breakers.
IEC , Power capacitors. IEC , rt 1: General. IEC , Power transformers - Pa Alternating current disconnectors isolators and earthing switches. IEC , Current transformers. IEC , Voltage transformers.
IEC , International code for model acceptance tests of hydraulic turbines. IEC , Amendment No. First supplement to IEC Guide for commissioning, operation and maintenance of hydraulic turbines. Considering the scope of this guide, it does not cover the initial stage of investigations, that is to say the preliminary study and feasibility study. Neither does it deal with the economic study concerning the supply and demand of energy. It is intended only to make the purchaser aware of the important points and data to be furnished, specified and kept in due consideration in the construction of small hydroelectric plants.
In the case of small hydro developments, the necessary simplification relevant to the type of installation shall be made. It principally covers the preparation of technical specifications, the examination of tenders, the manufacture, and finally the commercial operation and maintenance of equipment. This sequence also shows the relationship between the different phases and areas of responsibility of all the parties concerned consulting engineer, chief resident engineer, and users.
In some cases, all these data are not always readily available. Nevertheless, it must be emphasized that the more information that is given the better will the project be understood and therefore the better the technical solution which will result. Indicate the foundation conditions sand, rock, soft ground, etc. Indicate the presence of any living organisms or floating debris, etc. Indicate if there exist any particular operational constraints: e. State and describe with drawings those elements of the plant which are part of an exist- ing installation which it is foreseen will eventually be put back into use.
The net heads are defined as in IEC The crossflow turbines with diffusers being considered as reaction turbines. The weight to be given to a particular efficiency or overload depends on the time of utilization at the point of operation considered and the energy thus recovered from the installation. For general instructions to tenderers see clause 3. NOTES For low head plants with short intakes, care must be taken in the design of the intake in order to obvi- ate hydraulic problems such as vortices and air admission.
The plant is intended to operate in isolated network 2. Voltage regulator characteristics distribution of reactive power. Active loads electric motors Total In order to decide the method of regulation and the design of the governor, it is necessary to give an indication of the load variations load curve : daily; b weekly; seasonal.
Indicate the priority and non-priority loads load shedding as this is useful for designing the governor. The plant is intended to operate in parallel with a grid which imposes the frequency 2. The layout should also show the main centres of energy consumption and supply.
Also provide information on any possible developments of the grid. For units with low output and where hydraulic energy is abundant, simplified governors could also be used by producing a constant output at full load and dumping the unused power. If this is so, the turbine opening must then be governed with level feedback. This is generally the case with run-of-river plants in the river itself or in a bypass channel or when linked to an irrigation canal. NOTE - On isolated load, level or frequency may be controlled but not both.
NOTE - On isolated load, flow or frequency may be controlled but not both. The supplier should inform the purchaser of the necessary civil work data at an early stage so that the civil work can be designed in accordance with the requirements of the equipment.
Verification of the compatibility between the civil work and the electro- mechanical equipment overall dimensions, floor loads, supply and verification of the preliminary civil work layout drawings, etc. It should be checked that no equipment has been excluded. On the downstream side the limit could be defined as the end of the draft tube or of the stop-logs or gate, or any other suitable section.
Elements not normally included in the supply 3. Specify that the racks should be able to suppo rt the loads which can be produced when they are completely obstructed.
Covers units to 5 MW, runner diameters to 3 M for tendering, supply, manufacture and commissioning excluding civil, administrative and commercial conditions. Multi-user access to over 3, medical device standards, regulations, expert commentaries and other documents. Worldwide Standards We can source any standard from anywhere in the world. Learn more about the cookies we use and how to change your settings. Online Tools.
BS EN 61116:1995, IEC 61116:1992
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