摘要:

Because of the risk of anchor damage by ships using the busy port of Surabaya, Indonesia, the two 150 kV 120 MVA oil-filled submarine cables installed to link the island of Madura with mainland Java had to be buried up to 5 m deep in the seabed

ISSN:1479-8344    

DOI:10.1049/pe:19900004

出版商:IEE    

年代:1990

数据来源: IET

摘要:

A simulation package for the assessment of overcurrent relay performance on interconnected distribution networks has been developed which gives a new approach to identifying isolated nodes or split networks and fast detection of fault isolation in fault-current calculation. Other types of relay characteristics can be included into the package by simple modification of the program

ISSN:1479-8344    

DOI:10.1049/pe:19900007

出版商:IEE    

年代:1990

数据来源: IET

摘要:

Habitational experience in an energy-efficient house confirms the potential for large-scale energy savings and supply load-factor improvement with a saving in overall building costs. This is achievable with ‘run-of-the-mill’ existing technology by: minimising heat loss through the building fabric; prevention of heat loss through draughts and air leakage; recovering the maximum practicable level of heat from the outgoing warm air; and using low-tariff ‘off’ peak electricity forallspace and hot-water heating

ISSN:1479-8344    

DOI:10.1049/pe:19900008

出版商:IEE    

年代:1990

数据来源: IET

摘要:

Earthquakes of any significance are rare in the UK. Nonetheless the nuclear industry is required to take this into account in the design of installations. BNFL Engineering has gained significant experience in qualifying equipment within the last decade

ISSN:1479-8344    

DOI:10.1049/pe:19900010

出版商:IEE    

年代:1990

数据来源: IET

摘要:

Despite the multi-disciplinary nature of electroheat, close scrutiny of the topics comprising it reveals the existence of unified themes which can be adapted with the view to teaching it as an undergraduate discipline. A case is presented, with raw statistical data, based on several years experience of teaching electroheat from its embryonic to a fully fledged stage as part of a third-year module

ISSN:1479-8344    

DOI:10.1049/pe:19900011

出版商:IEE    

年代:1990

数据来源: IET

摘要:

Overcurrent and earth fault protection by means of inverse definite minimum time lag (IDMTL) relay tripping has been a standard solution for many years. In this case study the author examines the application of IDMTL relays for the tripping of LV main incoming circuit breakers as applied to installations in Hong Kong. The requirements imposed by the local supply companies and the consequent difficulties in achieving discrimination between the MICB protection and that on outgoing circuits are discussed

ISSN:1479-8344    

DOI:10.1049/pe:19900012

出版商:IEE    

年代:1990

数据来源: IET

摘要:

This article, the first in a regular series of tutorial studies, describes in general terms the nature of explosive atmospheres, sources of ignition and electrical apparatus which can be safely used in explosion-hazardous areas. There are a number of different methods of designing electrical equipment to reduce the risk of ignition, each having a generic name such asflameproof, intrinsic safety, pressurisationetc. In later articles the philosophy and present state of development of these design concepts will be described in more detail with references to their respective applications

ISSN:1479-8344    

DOI:10.1049/pe:19900013

出版商:IEE    

年代:1990

数据来源: IET