vùng lpzoa lightning protection zone oa

... Lightning Protection Modules P3M – Protector DS3 Modules Ordering Information Dimensions Catalog Number ... 10-position mounting chassis 3.50" x 23.0" x 25" (8.89 x 58.42 x 64 cm) P3C-350010 Description Protection module Web Site: www.adc.com From North America, Call Toll Free: 1-800-366-3891 • Outside...

Ngày tải lên: 27/10/2013, 01:15

... of lightning protection system Any metals within hazardous atmospheres having connections to other metals within 10 feet of lightning protection system will be bonded to the nearest lightning protection ... other protection system, separate lightning protection will not be required b Protection not included in other protection systems When external grounding system design does not include EMP protection, ... contact with earth to dissipate each lightning discharge without damage to the protected facility 2–2 Limitations in use of lightning protection a General Lightning protection will be installed as...

Ngày tải lên: 07/11/2013, 06:15

... [The author has patented this lightning protection system connector in the U.K and is pursuing similar protection and sales in the U.S. DJF] Final Tree Protection Lightning System Details Once ... lightning activity It could be said that the approach to lightning protection and trees described here is over engineered but, unlike a nondynamic structure, we cannot re-point or replace a lightning- damaged ... For evaluation only Recommendations for Installation of Lightning Protection Systems on Trees Having established the need for lightning protection and designed the earth (ground) termination we...

Ngày tải lên: 14/12/2013, 08:15

... increase the zone of protection provided by the lightning rod Unfortunately, the efficacy of radioactive lightning has been shown to be less than that of regular lightning rods, as the radioactive ... touched by the sphere is considered to be under a "zone of protection" Using this method, a properly designed lightning protection system will have lightning rods installs such that when the sphere ... Franklin lightning rod systems [edit] Radioactive rod systems Radioactive rod systems' main differentiating feature from traditional Franklin type systems is the use of radioactive materials in the lightning...

Ngày tải lên: 14/12/2013, 08:15

... A lightning protection system does not prevent lightning from striking; it provides a means for controlling it and preventing damage by providing a low resistance path for the discharge of lightning ... receptacles to protect computers and other office equipment UL's Role in Lightning Protection: UL's Master Label Program for lightning protection involves periodic factory testing and inspection of system ... Reconditioned Lightning Protection Program Under this program, the entire system must comply with the current UL Standards How You Can Protect Your Building: Install a UL Master Label Lightning Protection...

Ngày tải lên: 14/12/2013, 08:15

... and disregard content 1.5 The Cognitive Approach: 11 The Cognitive Approach, which emerged as a reaction against the defects of the Audio-lingual Approach and its behavioristic features at the ... productively and receptively, in unrehearsed contexts 1.5 The Lexical Approach The Lexical Approach was developed by Lewis in 1993 This approach stresses the importance of vocabulary as being basic to communication ... teaching approaches, task-based learning and communicative approach Among 120 staff and teachers of all subjects, there were English-language teachers working for the school The approach to English...

Ngày tải lên: 19/03/2015, 10:23

... be done Earthing, Lightning & Surge Protection Forum – IDC Technologies Session Ten: Lightning Protection for Industrial Plants RCD N E Figure All mode protection for a sub board Inductance too ... cabinet Whatever Earthing, Lightning & Surge Protection Forum – IDC Technologies Session Ten: Lightning Protection for Industrial Plants it represents we need to provide protection such that everything ... effective protection Whilst AS3000 clearly shows the recommended connection method and the need for overcurrent Earthing, Lightning & Surge Protection Forum – IDC Technologies Session Ten: Lightning Protection...

Ngày tải lên: 20/09/2015, 17:38

Ngày tải lên: 08/11/2012, 10:31

... Manage Acronis Secure Zone Cửa sổ Acronis Secure Zone Wizard ra: The image part with relationship ID rId6 was not found in the file Ấn Next, cửa sổ Create Acronis Secure Zone: The image part with ... lượng phân vùng bảo mật cho đủ (tất nhiên sau file lưu tạo nén nhỏ hơn) Cũng đừng tạo phân vùng bảo mật lớn chiếm nhiều ổ cứng gây lãng phí Sau bạn chuyển lại dung lượng cho phân vùng bảo mật, ... rId8 was not found in the file Kéo trượt để xác định cỡ cho phân vùng bảo mật, bạn gõ trực tiếp vào ô Partition size Chú ý phân vùng bảo mật bạn tạo phải đủ lớn để chứa file lưu bạn, tức bạn nên...

Ngày tải lên: 26/01/2014, 04:20

... oak acorns, Proceedings of the Fifth Central Hardwood Forest Conference, Urbana-Champaign, Illinois, USA-April 15–17, 1985, pp 222–227 [10] Boese S.R., Physical aspects of freezing in black oak ... resistance The aims of this study are the comparison of lethal temperatures for seeds of mediterranean oak species with different leaf phenology (evergreen and semideciduous) so as the establishment ... Medio Ambiente) at Serrania de Cuenca (Cuenca province) Seeds were selected and rehydrated by the floating method in tap water for 24 h Afterwards they were disinfected by inmersion in a 5% sodium...

Ngày tải lên: 08/08/2014, 01:22

... due to lightning 12 Type of loss 14 Need for lightning protection 14 Protection measures 15 Basic design criteria 15 Lightning Protection Level (LPL) 16 Lightning Protection Zone (LPZ) 18 Protection ... lightning Type of loss Need for lightning protection Protection measures Basic design criteria Lightning Protection Level (LPL) Lightning Protection Zone (LPZ) Protection of structures BS EN 62305-2 ... 62305:2006 Protection Against Lightning www.furse.com Theory of lightning Theory of lightning Characteristics of lightning Transient overvoltages (surges) www.furse.com Theory of lightning Theory of lightning...

Ngày tải lên: 08/08/2014, 13:21

... www.furse.com Lightning Protection Level (LPL) | BS EN 62305-1 BS EN 62305-1 General principles Lightning Protection Zone (LPZ) The general principle is that the equipment requiring protection should ... ds Figure 2.4: LPZ defined by protection measures against LEMP 19 www.furse.com Lightning Protection Zone (LPZ) | BS EN 62305-1 BS EN 62305-1 General principles Protection of structures An LPS ... by the lightning protection designer Details of the methodology and criteria for deciding the most suitable protection measures is given in BS EN 62305-2 Risk management 15 www.furse.com Protection...

Ngày tải lên: 08/08/2014, 13:21

... readers interpretation and understanding BS EN 62305-3 | Lightning Protection System (LPS) Lightning Protection System (LPS) Lightning Protection Level (LPL) has been designated and identified ... BS EN 62305-1, the Lightning Protection Level (LPL) is defined between a set of maximum and minimum lightning currents This is explained in depth on pages 16 – 17, Lightning Protection Level (LPL) ... D2 By Class of lightning protection system (LPS) installed BS EN 62305-2 Table NB.2 PC S1 D3 By coordinated SPD protection BS EN 62305-2 Table NB.3 PM S2 D3 By adopted lightning protection measures...

Ngày tải lên: 08/08/2014, 13:21

... 30m radius would leave the upper 20m needing lightning protection If an air rod or a conductor on the edge of the roof was installed then a zone of protection angle could not be claimed because ... effective zone of protection using the protective angle method See Figure 4.21 Figure 4.20a: Application of the protection angle method to catenary conductors forming an isolated system Protection ... 46 BS EN 62305-3 | Protective angle method www.furse.com Varying the protection angle is a change to the simple 45º zone of protection afforded in most cases in BS 6651 Furthermore this standard...

Ngày tải lên: 08/08/2014, 13:21

... earth electrode seals ● BS EN 50164-6 Lightning protection components (LPC) Part 6: Requirements for lightning strike counters ● BS EN 50164-7 Lightning protection components (LPC) Part 7: Requirements ... series These are: ● BS EN 50164-1:2000 Lightning protection components (LPC) Part 1:Requirement for connection components ● BS EN 50164-2:2002 Lightning protection components (LPC) Part 2: Requirements ... group in CENELEC These are: ● BS EN 50164-4 Lightning protection components (LPC) Part 4: Requirements for conductor fasteners ● BS EN 50164-5 Lightning protection components (LPC) Part 5: Requirements...

Ngày tải lên: 08/08/2014, 13:21

... Protective Devices Zoned protection concept Protection against LEMP is based on a concept of the Lightning Protection Zone (LPZ) that divides the structure in question into a number of zones according ... zonal approach referred to as Lightning Protection Zones (LPZ) It provides information for the design, installation, maintenance and testing of a Lightning Electromagnetic Impulse (LEMP) protection ... LEMP protection measures in existing structures LPZ Equipment Critical equipment Equipment LPZ Telecoms line Water pipe Gas pipe SPD 0/1 - Lightning current protection SPD 1/2 - Overvoltage protection...

Ngày tải lên: 08/08/2014, 13:21

... bonded to the structural lightning protection For example CCTV cameras should be safely positioned within the zone of protection provided by the structures lightning protection It may be necessary ... of lightning, but also from direct strikes A direct lightning strike must be prevented if at all possible This can typically achieved by ensuring that external equipment is within a zone of protection ... distribution board As the main distribution board falls within overvoltage impulse category III (see Table 5.5), the installed Type I SPD must ensure that during lightning activity, the voltage protection...

Ngày tải lên: 08/08/2014, 13:21

... structural Lightning Protection System and so reduce PB from to a lower value depending on the Class of LPS (I to IV) that we choose By the introduction of a structural Lightning Protection System, ... Characteristics of Zone Z1 (Entrance area) 102 Parameter People potentially in danger in the zone Table 6.15: Characteristics of Zone Z4 (Offices) Table 6.13: Characteristics of Zone Z2 (Garden) ... people are at risk outside the building, risk R1 for zone Z1 may be disregarded and the risk assessment performed for zone Z2 only Characteristics of zone Z2 are reported in Table 6.4 Parameter A l(P)...

Ngày tải lên: 08/08/2014, 13:21

... earth consisting of one or more strokes Lightning protection designer Specialist competent and skilled in the design of a Lightning Protection System Lightning protection installer Person competent ... by lightning Interconnected reinforcing steel Steelwork within a concrete structure, which is considered electrically continuous Internal lightning protection system Part of the Lightning Protection ... elements, metal ducts, etc which may carry a part of the lightning current External lightning protection system Part of the Lightning Protection System consisting of an air termination system,...

Ngày tải lên: 08/08/2014, 13:21