Download MEW E101 April 2013 (pdf, 280kb) - NSW Public Works

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Part 2 - Switchboards and Associated Equipment • Disconnection of all live parts that can be unintentionally touched after the door has been opened. (Meet clause 7.4.2.2.3 b) of AS/NZS 3439.1:2002.) • Shielding all live parts in such a manner that they cannot be unintentionally touched when the door is opened or the cover is removed. (Meet clause 7.4.2.2.3 c) of AS/NZS 3439.1:2002.) For Common Control Compartments: • Requirement of a key or tool to gain entry into the switchboard. (Meet clause 7.4.2.2.3 a) of AS/NZS 3439.1:2002.) • Shielding all live parts in such a manner that they cannot be unintentionally touched when the door is opened or the cover is removed. (Meet clause 7.4.2.2.3 c) of AS/NZS 3439.1:2002.) For Distribution Compartments with one main protective device plus a number of subcircuit protective devices: • Requirement of a key or tool to gain entry into the switchboard. (Meet clause 7.4.2.2.3 a) of AS/NZS 3439.1:2002.) for the compartment door and for the escutcheon. 202.1.7 Custom-built Assembly Type “DTPLUS” The following details shall apply to Custom-built Assemblies Type “DTPLUS”: (a) A Type “DTPLUS” assembly shall be a stationary “cubicle-type assembly” or ‘multi-cubicle-type assembly” as defined in AS/NZS 3439.1:2002. (b) A Type “DTPLUS” assembly shall comply with AS/NZS 3439.1:2002 as defined by the following requirements: (i) Form of separation shall be Form 4b. (ii) The degree of protection after installation in accordance with the manufacturer’s instructions shall be IP51 for indoor installation and IP56 for outdoor installation. (iii) Assemblies shall be front access with top and/or bottom cable entry. (iv) Assemblies shall be floor mounted. (v) For outdoor switchboards containing busbars, pollution degree 3 shall apply at locations further than 1km in a direct line from the coast or at altitudes below 1000 metres. Otherwise, pollution degree 4 shall apply. For indoor switchboards, pollution degree 3 shall apply. (vi) The following safety measures against direct contact shall apply: For Main Incoming Supply Compartments, Motor Starter Compartments and Distribution Feeder Compartments with one feeder in the Distribution Feeder Compartment: • Requirement of a key or tool to gain entry into the switchboard. (Meet clause 7.4.2.2.3 a) of AS/NZS 3439.1:2002.) • Disconnection of all live parts that can be unintentionally touched after the door has been opened. (Meet clause 7.4.2.2.3 b) of AS/NZS 3439.1:2002.) • Shielding all live parts in such a manner that they cannot be unintentionally touched when the door is opened or the cover is removed. (Meet clause 7.4.2.2.3 c) of AS/NZS 3439.1:2002.) Page 32 MEW E101
Part 2 - Switchboards and Associated Equipment For Common Control Compartments: • Requirement of a key or tool to gain entry into the switchboard. (Meet clause 7.4.2.2.3 a) of AS/NZS 3439.1:2002.) • Shielding all live parts in such a manner that they cannot be unintentionally touched when the door is opened or the cover is removed. (Meet clause 7.4.2.2.3 c) of AS/NZS 3439.1:2002.) For Distribution Compartments with one main protective device plus a number of subcircuit protective devices: • Requirement of a key or tool to gain entry into the switchboard. (Meet clause 7.4.2.2.3 a) of AS/NZS 3439.1:2002.) for the compartment door and for the escutcheon. (vii) Assemblies shall be Partially Type Tested Assemblies or Type Tested Assemblies with type test certificates or satisfactory test reports for the type tests listed in clause 8 of AS/NZS 3439.1:2002. Documentation shall be available to demonstrate that the results of type tests were satisfactory. The testing facility shall be accredited by NATA or registered with the Association of Short-Circuit Testing Authorities. (viii) The special Internal Arcing-Fault Test (unlimited arc, initiated on the line side of the protective device within the functional unit being tested) required by Appendix ZD.6 of AS/NZS 3439.1:2002 shall be met and a test certificate demonstrating that the results of the type tests were satisfactory shall be available. Further to Clause ZD.2 (Relevance of Tests) of AS/NZS 3439.1:2002, the special internal arcing-fault test shall be applicable to all compartments. The duration of the test shall be chosen by the manufacturer according to the time response of the electrical protection devices. If details of these devices are not known, a power supply duration of at least 100 milliseconds shall apply. The testing facility shall be accredited by NATA or registered with the Association of Short-Circuit Testing Authorities. 202.1.8 Manufacturer of the Switchboard. (a) Custom-built Assemblies Type “DTPLUS” The firm in whose name the test certificates have been issued shall completely manufacture the switchboard at its workshop. (b) Other Custom-built Assemblies For Custom-built Assemblies, other than Type “DTPLUS”, where a proprietary modular switchboard system is offered, the switchboard builder shall have been appropriately trained and have the appropriate level of accreditation to build the switchboard from the manufacturer of the modular switchboard system. 203 FAULT LEVELS AND LIMITATION 203.1 Fault Levels and Time of Duration The indicated fault level shall apply. The fault level being the prospective symmetrical r.m.s. value at the switchboard input terminals. Conductors and equipment shall be suitable for a time not less than that determined in the following manner: (a) On any conductor or equipment:- one (1) second. (b) On any conductor or equipment protected by a consumer's line side fuse or fast acting circuit breaker: the actual cut-off time or trip out time at the indicated fault level where it is not less than 10 milliseconds. Where the actual cut-off time or trip out time of the consumer's line side fuse or fast acting circuit breaker is less than 10 milliseconds, then the conductors and MEW E101 Page 33
Page 1 and 2: ELECTRICAL SERVICES MINIMUM REQUIRE
Page 3 and 4: Part 0 - General PART Ø - GENERAL
Page 5 and 6: Part 0 - General AS 3190 AS 3191 AS
Page 7 and 8: Part 1 -Installation PART 1 - INSTA
Page 9 and 10: Part 1 -Installation 103.3.3 Crossa
Page 11 and 12: Part 1 -Installation Covers and fra
Page 13 and 14: Part 1 -Installation (c) Be either
Page 15 and 16: Part 1 -Installation 106.9.2 Teleph
Page 17 and 18: Part 1 -Installation This conduit s
Page 19 and 20: Part 1 -Installation directions and
Page 21 and 22: Part 1 -Installation 108.11 Wall Bo
Page 23 and 24: Part 1 -Installation Cables shall l
Page 25 and 26: Part 1 -Installation 12, round head
Page 27 and 28: Part 1 -Installation busway enclosu
Page 29 and 30: Part 2 - Switchboards and Associate
Page 33: Part 2 - Switchboards and Associate
Page 73 and 74: Part 3 - Accessories 303 WALL MOUNT
Page 75 and 76: Part 4 - Luminaires - Supply and In
Page 77 and 78: Part 4 - Luminaires - Supply and In
Page 79 and 80: Part 5 - Electrical Motors For vari
Page 81 and 82: Part 5 - Electrical Motors 507 EMBE
Page 83 and 84: Part 5 - Electrical Motors Each mot
Page 85 and 86:
Part 6 - Painting, Colour Coding an
Page 87 and 88:
Index TABLE OF CONTENTS PAGE PART
Page 89 and 90:
Index 107.2 Earthing Conductors for
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Index 201 SCOPE 27 202 GENERALLY 27
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Index 207.12.4 Reversing Starters 4
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Index 212.4 Drawings Produced by Mo
Page 97:
Index 601 PAINTING 82 601.1 General
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