Substation Design Indoor And Outdoor Lighting Standard 2r134p
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TS 317: Substation Design – Indoor and outdoor lighting standard
Technical Standard - TS 317 Substation Design – Indoor and outdoor lighting standard Published: 30 September 2014
SA Power Networks www.sapowernetworks.com.au TS 317: Substation design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
Page 1 of 12
TS 317: Substation Design – Indoor and outdoor lighting standard
Revision Notice: Date
Details
Author
Authorised
30 September 2014
New document.
F. Hall
J. Ali
SA Power Networks: SA Power Networks, ABN 13 332 330 749, a partnership of: Spark Infrastructure SA (No.1) Pty Ltd, ABN 54 091 142 380 Spark Infrastructure SA (No.2) Pty Ltd, ABN 19 091 143 038 Spark Infrastructure SA (No.3) Pty Ltd, ABN 50 091 142 362 each incorporated in Australia CKI Utilities Development Limited, ABN 65 090 718 880 PAI Utilities Development Limited, ABN 82 090 718 951 each incorporated in The Bahamas
1 Anzac Highway, Keswick, South Australia, 5035.
SA Power Networks Disclaimer: 1. The use of the information contained in this document is at your sole risk. 2. The Information within this document is subject to change without notice. 3. SA Power Networks, its agents, instrumentalities, officers and employees: Make no representations, express or implied, as to the accuracy of the information contained within this document; Accept no liability for any use of the said information or reliance placed on it; and Make no representations, either expressed or implied, as to the suitability of the said information for any particular purpose. 4. SA Power Networks and its agencies and instrumentalities do not endorse or in any respect warrant any third party products or services by virtue of any information, material or content referred to or included on, or linked to this document.
SA Power Networks Copyright©2014: This publication is copyright protected. SA Power Networks reserves to itself all rights in such material. You shall not reproduce any content of this document by any process without first obtaining SA Power Networks’ permission, except as permitted under the Copyright Act 1968. All rights reserved.
TS 317: Substation Design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
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To obtain an electronic copy of this technical standard document, please click here to get to our website: http://www.sapowernetworks.com.au/centric/industry/contractors_and_designers/technical_standards.js p.
TS 317: Substation Design – Indoor and outdoor lighting standard
1.
Purpose .......................................................................................................4
2.
Scope ..........................................................................................................4
3.
Indoor lighting design ..................................................................................4
4.
5.
3.1
General ............................................................................................................... 4
3.2
Luminaires ........................................................................................................... 4
3.3
Ballasts ................................................................................................................ 4
3.4
Switches/Controls ............................................................................................... 4
Lighting mounted on outer walls of building ...............................................5 4.1
General ............................................................................................................... 5
4.2
Luminaires ........................................................................................................... 5
4.3
Ballasts ................................................................................................................ 5
4.4
Switches/Controls ............................................................................................... 5
Outdoor floodlighting ..................................................................................6 5.1
General ............................................................................................................... 6
5.2
Illumination levels ............................................................................................... 6
5.3
Illumination quality and obtrusive light prevention .............................................. 7
5.4
Luminaires ........................................................................................................... 7
5.5
Lighting columns.................................................................................................. 8
5.6
5.5.1
General............................................................................................................ 8
5.5.2
Preferred locations .......................................................................................... 8
Luminaires not on lighting columns ...................................................................... 8 5.6.1
Preferred locations .......................................................................................... 8
5.7
Illuminating access stairs and ramps .................................................................... 8
5.8
Lighting activation ............................................................................................... 9 5.8.1
5.9
General............................................................................................................ 9
Lighting design..................................................................................................... 9
Appendices ....................................................................................................... 10 Appendix A: Definitions ............................................................................................... 10 Appendix B: References ............................................................................................... 11
TS 317: Substation design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
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CONTENTS
TS 317: Substation Design – Indoor and outdoor lighting standard
1.
Purpose This technical standard specifies the indoor and outdoor lighting standard for new and/or upgraded SA Power Networks substations.
Scope This technical standard is applicable for all parties involved in the design and construction of substations. The Electricity Act 1996 and Electricity (General) Regulations 2012, other statutory authority requirements and relevant AS/NZS standards are the basis of TS 317. For any situation that is not covered in this standard, the requirements of current standards including the Building Code of Australia apply. There may be additional requirements and specifications which are project specific. This document does not include emergency indoor lighting for substations, which is covered in technical standard TS 318 – Substation Design - Emergency indoor lighting.
3.
Indoor lighting design
3.1
General The purpose of indoor lighting is to provide sufficient light within the substation building for normal work activities. However, for specific activities eg working in s, additional directional lighting may be required. The following general design principles shall apply: Lighting within substation buildings shall provide an average illuminance of 160 lx at floor level, as outlined in table 3.1 of AS/NZS 1680.1. Typically indoor light fittings shall consist of standard single or double fluorescent tubes light fittings. Light fittings should be positioned such that the illuminance is spread evenly across the building. Due to the substation building usually being separated into three distinct, relatively narrow ‘corridors’ by the control s, each corridor can be considered a separate ‘room’ to be illuminated. Light fittings must be ceiling or wall mounted and must not be located over HV switchgear, transformers, LV switchboards, protection s, telecommunication cubicles or other equipment. Hanging light fittings with chain s or similar are permitted when cable trays obscure light from ceiling mounted lights. The minimum mounting height is to be no lower than the bottom of the cable tray.
3.2
Luminaires The luminaires chosen to provide the required illuminance level should be chosen on the basis of minimum whole of lifecycle cost. There is a preference to utilise fluorescent lamps. Any fluorescent lamp used shall comply with AS/NZS 4782.1, AS/NZS 4782.2 and IEC 60061 – 1.
3.3
Ballasts If fluorescent tubes are being used, the ballast used in the lighting control circuit shall be electronic and comply with the requirements of AS/NZS 4783.1 and AS/NZS 4783.2.
3.4
Switches/Controls All light switches shall comply with AS/NZS 3133. The switches shall be placed in a location such that personnel can open the door and locate the light switch on the wall in no more than two paces from the door frame.
TS 317: Substation design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
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2.
TS 317: Substation Design – Indoor and outdoor lighting standard
4.
Lighting mounted on outer walls of building
4.1
General This section refers to luminaires mounted on the outside walls of the substation building itself ONLY. It does not include outdoor/switchyard lighting.
Figure 1: Fluoro with weatherproof enclosure
4.2
Luminaires The luminaires chosen to provide the required illuminance level should be chosen on the basis of minimum whole of life cost. Any fluorescent lamp used shall comply with AS/NZS 4782.1, AS/NZS 4782.2 and IEC 60061 – 1. Typical outdoor lighting consists of standard fluorescents globes with weatherproof enclosure (IP rating 54 or higher), mounted on a wall of the control building.
4.3
Ballasts If fluorescent tubes are being used, the ballast used in the lighting control circuit shall be electronic and comply with the requirements of AS/NZS 4783.1 and AS/NZS 4783.2.
4.4
Switches/Controls All light switches that are installed to control the lighting system shall comply with AS/NZS 3133.
TS 317: Substation Design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
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When required as part of the yard lighting then these shall comply with the paragraphs below. The preferred location is shown in Figure 1:
TS 317: Substation Design – Indoor and outdoor lighting standard
5.
Outdoor floodlighting
5.1
General Outdoor lighting of any SA Power Networks substation must fulfil the following objectives: Provide area lighting illumination in substation switchyard access areas
o
Hazards at ground level, on equipment and overhead bus and conductor,
o
Location of vehicle access barriers, and
o
HV areas, and safe movement around HV areas.
Minimise adverse environmental impact Please note that the outdoor lighting levels are not intended to provide sufficient lighting to perform works in the area. If required, temporary lighting will have to be brought on site for prolonged tasks.
5.2
Illumination levels Illumination levels must accord with lighting to AS/NZS 1158.3.1:
Switchyard area lighting targets
Illuminance (lx)
HV areas including any overhead line road crossings and any access path zone type infrastructure
10
Non-HV areas and general open areas
5
Isolated areas such as back of buildings, corners of switchyards away from HV Equipment
2
Table 1: Illumination levels in switchyard area Please note:
The values above are indicative only, and can be adjusted on a case-by-case basis if deemed necessary. AS 2067 Section 5.1.6 suggests that ‘in some cases, in small distribution substations, a lighting installation may not be required’, and ‘can be agreed on between the supplier and the ’. However, SA Power Networks uses the values in the table above for health and safety reasons.
The levels above are maintenance levels, taking into maintenance factors for diminishing illuminance due to aging luminaires, dirty conditions and other factors detrimental to the operating ability of the lighting system.
Many luminaires have a warm-up period before reaching full light output. Allow five minutes for warm-up before checking lux levels.
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Provide illumination levels of sufficient intensity and clarity for safe movement of personnel and their vehicles. Aid identification of:
TS 317: Substation Design – Indoor and outdoor lighting standard
5.3
Illumination quality and obtrusive light prevention The outdoor lighting design must effectively light the substation switchyard area, taking into consideration the following aspects: White light (colour temperature 5,000-5,500K) emission characteristic of lamp type selected: To obtain a natural light source, ensure that the spectral power distribution is as continuous as possible. White light emission creates optimal lighting for viewing colours within everyday colour range. Obtrusive light prevention in accordance with Table 2.1 of AS 4282: To avoid the impacts of obtrusive light, inspect the lighting design in accordance with Figure 3.1 of AS4282 and consider the installation of prevention methods outlined in Table 2.1 of AS 4282. Vertical lux levels at neighbouring property borders to be a maximum of 10 lux. Lux level is to be validated at the boundary fence, and to be measured at 100% spill light, rather than 70% maintenance level. Spill light (stray light) prevention: To avoid spill light entering neighbouring properties, direct light downwards and inwards from the substation boundary. To help with reducing spill light to a minimum, shields and baffles may be considered, taking into insect attraction and photometric data availability. Glare prevention supplemented by diffs, louvres, or screens: Ensure that the main beam angle of all lights directed toward any potential observer is kept below 70°. For additional prevention, diffs, louvres or screens can be installed. Use luminaires whose characteristics match that of a Type 5, 4, or 3 in table 2.10 of AS/NZS 1158.3.1. Upward light waste prevention: Use specifically designed lighting equipment that, once installed, minimises the spread of light near to, or above the horizontal. Additional diffs, louvres, or screens secured to luminaire body to withstand wind force test to clause 5.5 of AS/NZS 1158.6. Security lighting design considerations of clause 5.5.3 in ENA Doc 015-2006. The main considerations include: o o o o o
5.4
The boundary of the illumination area Providing safe illumination levels of the area The direction of the lights Housing surrounding the lighting Correct lamp selection
Luminaires The luminaires chosen must have low energy consumption at an optimum efficiency, be wastefree, provide quality illumination properties that have inherent long lifetime, minimise lamp disposal environmental risk and adhere to clause 3.3 Design Guidelines of AS/NZS 4282. Floodlights are either column-mounted or attached to the building. Luminaires must adhere to AS/NZS 1158.6. The degree of ingress protection to be provided is IP55.
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Refer to AS/NZS 1158.3.1 Sections 2.7.1 and 2.7.2 for more details.
TS 317: Substation Design – Indoor and outdoor lighting standard
Lighting columns 5.5.1
General
5.5.2
Minimum distances to power lines as per AS 2067 must be adhered to at all times. For more information, please also refer to Technical Standard TS 301 – Substation Design – General. Both tilt poles and frangible poles are not permissible unless approval has been obtained by Network Standards and Performance Equipment Group, and an appropriate Risk Assessment has been carried out. If approval has been given to use tilt poles, both current and future site layouts have to be considered to avoid interference with current/future equipment. Drawings shall note the direction of the swing. Electrically conductive poles must be earthed as per TS 320 – Substation Design – Earthing.
Preferred locations Preferred locations for lighting poles are around the perimeter of the substation – inside the substation fence. Poles shall be far enough away from the fence to not aid as a climbing device for intruders. Earthing design (avoidance of possible step and touch potential breach) shall also be considered when choosing locations of poles.
5.6
Luminaires not on lighting columns 5.6.1
Preferred locations Preferred locations for luminaires not mounted on lighting columns are attached to the substation building, as shown in the pictures below.
Figure 2: Floodlight attached to substation building
5.7
Illuminating access stairs and ramps Access stairs and ramps shall be illuminated as for the highest lighting subcategory applying to areas that abut the connecting element, as they can be classified as lighting subcategory P9. Please refer to AS/NZS 1158.3.1, Tables 2.4 and 2.8 for further information.
TS 317: Substation Design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
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5.5
TS 317: Substation Design – Indoor and outdoor lighting standard
5.8
Lighting activation 5.8.1
General The design must ensure automatic switching facility; switch on at sunset and switch off at sunrise via integral photo-electric sensor mechanisms. Manual switching facility must ensure lighting circuits can be conveniently switched on and off by hand, overriding automatic switching mode provision.
Light switches must be located to remove the need for a person to traverse under HV conductors to operate any such switch. In order of preference, light switches must be located in one of the following positions: 1. On the inside of the main entrance gate to substation; or 2. On the exterior of the control building at the closest point to the main gate entrance; or 3. Inside the control building on the substation main AC SWITCHBOARD. Clear signage must indicate the switching location for area lighting at any particular substation.
5.9
Lighting design Light structures (columns and luminaires) should be positioned with regard to both the current and future layout of the substation. The following should be considered when placing lights: Ensure that the desired light level will be obtained. This should be modelled using appropriate software packages. Ensure that they are not placed in a location that will interfere with lines or proposed future line routes. Columns must be positioned outside Vehicle Access Barriers, unless approval in writing has been given by Manager Network Standards and Performance. Trenching shall be reduced as much as possible, using existing ducts. Alternative design methods shall be considered first. All lighting shall be clearly labelled for easy identification within the switchboard. Lighting can be powered by a mobile generator to provide lighting in the case of a power outage where the substation is provided with a generator changeover switch and connection if required. The design option providing the lowest whole-of-life cost is preferred to options which provide short-term savings but higher maintenance costs. Where practical, lights to be operated by one switch only. Minimise the use of complicated wiring setups (involving relay switches etc) where possible. Provide surge arrestor in the AC supply to ensure lightning and other surges will not cause damage to the .
TS 317: Substation Design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
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The outdoor lighting design must include the requirement for the installation of clear signage, and ensure that the normal mode of operation is MANUAL mode.
TS 317: Substation Design – Indoor and outdoor lighting standard
Appendices
AS/NZS:
Australia and New Zealand Standards published by Standards Australia.
Ingress Protection
Classifies and rates the degree of protection provided against the intrusion (including body parts such as hands and fingers), dust, accidental , and water by mechanical casings and electrical enclosures
Lamp:
A light source.
Lighting column:
A rigid style lighting column without luminaire.
Luminaire:
An apparatus which distributes, filters or emits light from one or more lamps. It contains all the parts necessary for fixing and protecting the lamp and circuit auxiliaries.
LV (Low voltage):
Exceeding 50 volts ac or 50 volts ripple free dc but not exceeding 1,000 volts ac or 1,500 volts dc.
LV cables:
Cables where the primary voltage is exceeding 50V ac but less than 1,000V ac
Manager (NSP):
SA Power Networks Manager Network Standards and Performance.
Must:
Is to be understood as mandatory.
Shall:
Is to be understood as mandatory.
Should:
Is to be understood as non–mandatory, ie advisory or recommended.
Substation:
Part of a power system, concentrated in a given place, including mainly the terminations of transmission or distribution lines, switchgear and housing and which may also include transformers. It generally includes facilities necessary for system security and control (eg protective devices).
Suitable (or suitably):
To the satisfaction of the relevant SA Power Networks Manager.
TS 317: Substation Design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
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Appendix A: Definitions
TS 317: Substation Design – Indoor and outdoor lighting standard
Appendix B: References
South Australian Legislation: This technical standard is based on AS/NZS Standards Australia Publications. SA Electricity Act 1996 Electricity (General) Regulations 2012 WH&S Regulations 2012
Energy Networks Association (AUS) Publications:
ENA NENS 03 - 2006 ENA Doc 015 – 2006
National guidelines for safe access to electrical and mechanical apparatus National guidelines for prevention of unauthorised access to electricity infrastructure
Standards Australia Publications:
AS 4282-1997 Control of the obtrusive effects of outdoor lighting AS/NZS 1158.3.1:2005 Lighting for roads and public spaces – Pedestrian Areas (Category P) lighting AS/NZS 1158.6:2010 Lighting for roads and public spaces – Tunnels and underes AS/NZS 1680.0-2009 Interior Lighting - Safe Movement AS/NZS 1680.1-2006 Interior and Workplace Lighting - General Principles and Recommendations AS/NZS 1680.2.4-1997 Interior Lighting - Industrial tasks and Processes AS 2067-2008 Substations and high voltage installations exceeding 1kV a.c. AS/NZS 3000:2007 Electrical Installations (known as the AS/NZ Wiring Rules) AS/NZS 3133-2013 Approval and Test Specification – Air-break Switches AS/NZS 1158.3.1:2005 Lighting for roads and public spaces – Pedestrian Areas (Category P) Specifications – General (IEC 60081:2000 MOD) AS/NZS 4782.2-2004 Double-capped Fluorescent Lamps – Performance Specifications Minimum Energy Performance Standard (MEPS) AS/NZS 4783.1-2001 Performance of Electrical Lighting Equipment – Ballasts for Fluorescent Lamps - Method of Measurement to Determine Energy Consumption and Performance of Ballast Lamp Circuits AS/NZS 4783.2-2002 Performance of Electrical Lighting Equipment – Ballasts for Fluorescent Lamps - Energy Labelling and Minimum Energy Performance Standards Requirements
IEC Standards:
IEC 60061
Lamp caps and holders
TS 317: Substation Design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
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The following listed documents are for additional information but may not be a conclusive list and other documentation may be required on a project specific basis. Refer to the following SA legislative acts and regulations, SA Electricity Code, SA Power Networks’ publications, relevant AS/NZS and ENA standards for more detail. Please note: It is your responsibility to ensure you have complied with all relevant standards and that you have used the latest version.
TS 317: Substation Design – Indoor and outdoor lighting standard
SA Power Networks documents: Manual 14 TS 101 TS 105 TS 301 TS 318 TS 320
Safety, Reliability, Maintenance & Technical Management Plan Public lighting standard for overhead and underground networks Testing standard for underground and overhead cable networks Substation Design – General Substation Design – Emergency indoor lighting Substation Design – Earthing
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TS 317: Substation Design – Indoor and outdoor lighting standard
Technical Standard - TS 317 Substation Design – Indoor and outdoor lighting standard Published: 30 September 2014
SA Power Networks www.sapowernetworks.com.au TS 317: Substation design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
Page 1 of 12
TS 317: Substation Design – Indoor and outdoor lighting standard
Revision Notice: Date
Details
Author
Authorised
30 September 2014
New document.
F. Hall
J. Ali
SA Power Networks: SA Power Networks, ABN 13 332 330 749, a partnership of: Spark Infrastructure SA (No.1) Pty Ltd, ABN 54 091 142 380 Spark Infrastructure SA (No.2) Pty Ltd, ABN 19 091 143 038 Spark Infrastructure SA (No.3) Pty Ltd, ABN 50 091 142 362 each incorporated in Australia CKI Utilities Development Limited, ABN 65 090 718 880 PAI Utilities Development Limited, ABN 82 090 718 951 each incorporated in The Bahamas
1 Anzac Highway, Keswick, South Australia, 5035.
SA Power Networks Disclaimer: 1. The use of the information contained in this document is at your sole risk. 2. The Information within this document is subject to change without notice. 3. SA Power Networks, its agents, instrumentalities, officers and employees: Make no representations, express or implied, as to the accuracy of the information contained within this document; Accept no liability for any use of the said information or reliance placed on it; and Make no representations, either expressed or implied, as to the suitability of the said information for any particular purpose. 4. SA Power Networks and its agencies and instrumentalities do not endorse or in any respect warrant any third party products or services by virtue of any information, material or content referred to or included on, or linked to this document.
SA Power Networks Copyright©2014: This publication is copyright protected. SA Power Networks reserves to itself all rights in such material. You shall not reproduce any content of this document by any process without first obtaining SA Power Networks’ permission, except as permitted under the Copyright Act 1968. All rights reserved.
TS 317: Substation Design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
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TS 317: Substation Design – Indoor and outdoor lighting standard
1.
Purpose .......................................................................................................4
2.
Scope ..........................................................................................................4
3.
Indoor lighting design ..................................................................................4
4.
5.
3.1
General ............................................................................................................... 4
3.2
Luminaires ........................................................................................................... 4
3.3
Ballasts ................................................................................................................ 4
3.4
Switches/Controls ............................................................................................... 4
Lighting mounted on outer walls of building ...............................................5 4.1
General ............................................................................................................... 5
4.2
Luminaires ........................................................................................................... 5
4.3
Ballasts ................................................................................................................ 5
4.4
Switches/Controls ............................................................................................... 5
Outdoor floodlighting ..................................................................................6 5.1
General ............................................................................................................... 6
5.2
Illumination levels ............................................................................................... 6
5.3
Illumination quality and obtrusive light prevention .............................................. 7
5.4
Luminaires ........................................................................................................... 7
5.5
Lighting columns.................................................................................................. 8
5.6
5.5.1
General............................................................................................................ 8
5.5.2
Preferred locations .......................................................................................... 8
Luminaires not on lighting columns ...................................................................... 8 5.6.1
Preferred locations .......................................................................................... 8
5.7
Illuminating access stairs and ramps .................................................................... 8
5.8
Lighting activation ............................................................................................... 9 5.8.1
5.9
General............................................................................................................ 9
Lighting design..................................................................................................... 9
Appendices ....................................................................................................... 10 Appendix A: Definitions ............................................................................................... 10 Appendix B: References ............................................................................................... 11
TS 317: Substation design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
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CONTENTS
TS 317: Substation Design – Indoor and outdoor lighting standard
1.
Purpose This technical standard specifies the indoor and outdoor lighting standard for new and/or upgraded SA Power Networks substations.
Scope This technical standard is applicable for all parties involved in the design and construction of substations. The Electricity Act 1996 and Electricity (General) Regulations 2012, other statutory authority requirements and relevant AS/NZS standards are the basis of TS 317. For any situation that is not covered in this standard, the requirements of current standards including the Building Code of Australia apply. There may be additional requirements and specifications which are project specific. This document does not include emergency indoor lighting for substations, which is covered in technical standard TS 318 – Substation Design - Emergency indoor lighting.
3.
Indoor lighting design
3.1
General The purpose of indoor lighting is to provide sufficient light within the substation building for normal work activities. However, for specific activities eg working in s, additional directional lighting may be required. The following general design principles shall apply: Lighting within substation buildings shall provide an average illuminance of 160 lx at floor level, as outlined in table 3.1 of AS/NZS 1680.1. Typically indoor light fittings shall consist of standard single or double fluorescent tubes light fittings. Light fittings should be positioned such that the illuminance is spread evenly across the building. Due to the substation building usually being separated into three distinct, relatively narrow ‘corridors’ by the control s, each corridor can be considered a separate ‘room’ to be illuminated. Light fittings must be ceiling or wall mounted and must not be located over HV switchgear, transformers, LV switchboards, protection s, telecommunication cubicles or other equipment. Hanging light fittings with chain s or similar are permitted when cable trays obscure light from ceiling mounted lights. The minimum mounting height is to be no lower than the bottom of the cable tray.
3.2
Luminaires The luminaires chosen to provide the required illuminance level should be chosen on the basis of minimum whole of lifecycle cost. There is a preference to utilise fluorescent lamps. Any fluorescent lamp used shall comply with AS/NZS 4782.1, AS/NZS 4782.2 and IEC 60061 – 1.
3.3
Ballasts If fluorescent tubes are being used, the ballast used in the lighting control circuit shall be electronic and comply with the requirements of AS/NZS 4783.1 and AS/NZS 4783.2.
3.4
Switches/Controls All light switches shall comply with AS/NZS 3133. The switches shall be placed in a location such that personnel can open the door and locate the light switch on the wall in no more than two paces from the door frame.
TS 317: Substation design – Indoor and outdoor lighting standard Issued - September 2014 The use of this document is subject to the conditions stated in SA Power Networks disclaimer at the front of this document. SA Power Networks 2014
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2.
TS 317: Substation Design – Indoor and outdoor lighting standard
4.
Lighting mounted on outer walls of building
4.1
General This section refers to luminaires mounted on the outside walls of the substation building itself ONLY. It does not include outdoor/switchyard lighting.
Figure 1: Fluoro with weatherproof enclosure
4.2
Luminaires The luminaires chosen to provide the required illuminance level should be chosen on the basis of minimum whole of life cost. Any fluorescent lamp used shall comply with AS/NZS 4782.1, AS/NZS 4782.2 and IEC 60061 – 1. Typical outdoor lighting consists of standard fluorescents globes with weatherproof enclosure (IP rating 54 or higher), mounted on a wall of the control building.
4.3
Ballasts If fluorescent tubes are being used, the ballast used in the lighting control circuit shall be electronic and comply with the requirements of AS/NZS 4783.1 and AS/NZS 4783.2.
4.4
Switches/Controls All light switches that are installed to control the lighting system shall comply with AS/NZS 3133.
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When required as part of the yard lighting then these shall comply with the paragraphs below. The preferred location is shown in Figure 1:
TS 317: Substation Design – Indoor and outdoor lighting standard
5.
Outdoor floodlighting
5.1
General Outdoor lighting of any SA Power Networks substation must fulfil the following objectives: Provide area lighting illumination in substation switchyard access areas
o
Hazards at ground level, on equipment and overhead bus and conductor,
o
Location of vehicle access barriers, and
o
HV areas, and safe movement around HV areas.
Minimise adverse environmental impact Please note that the outdoor lighting levels are not intended to provide sufficient lighting to perform works in the area. If required, temporary lighting will have to be brought on site for prolonged tasks.
5.2
Illumination levels Illumination levels must accord with lighting to AS/NZS 1158.3.1:
Switchyard area lighting targets
Illuminance (lx)
HV areas including any overhead line road crossings and any access path zone type infrastructure
10
Non-HV areas and general open areas
5
Isolated areas such as back of buildings, corners of switchyards away from HV Equipment
2
Table 1: Illumination levels in switchyard area Please note:
The values above are indicative only, and can be adjusted on a case-by-case basis if deemed necessary. AS 2067 Section 5.1.6 suggests that ‘in some cases, in small distribution substations, a lighting installation may not be required’, and ‘can be agreed on between the supplier and the ’. However, SA Power Networks uses the values in the table above for health and safety reasons.
The levels above are maintenance levels, taking into maintenance factors for diminishing illuminance due to aging luminaires, dirty conditions and other factors detrimental to the operating ability of the lighting system.
Many luminaires have a warm-up period before reaching full light output. Allow five minutes for warm-up before checking lux levels.
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Provide illumination levels of sufficient intensity and clarity for safe movement of personnel and their vehicles. Aid identification of:
TS 317: Substation Design – Indoor and outdoor lighting standard
5.3
Illumination quality and obtrusive light prevention The outdoor lighting design must effectively light the substation switchyard area, taking into consideration the following aspects: White light (colour temperature 5,000-5,500K) emission characteristic of lamp type selected: To obtain a natural light source, ensure that the spectral power distribution is as continuous as possible. White light emission creates optimal lighting for viewing colours within everyday colour range. Obtrusive light prevention in accordance with Table 2.1 of AS 4282: To avoid the impacts of obtrusive light, inspect the lighting design in accordance with Figure 3.1 of AS4282 and consider the installation of prevention methods outlined in Table 2.1 of AS 4282. Vertical lux levels at neighbouring property borders to be a maximum of 10 lux. Lux level is to be validated at the boundary fence, and to be measured at 100% spill light, rather than 70% maintenance level. Spill light (stray light) prevention: To avoid spill light entering neighbouring properties, direct light downwards and inwards from the substation boundary. To help with reducing spill light to a minimum, shields and baffles may be considered, taking into insect attraction and photometric data availability. Glare prevention supplemented by diffs, louvres, or screens: Ensure that the main beam angle of all lights directed toward any potential observer is kept below 70°. For additional prevention, diffs, louvres or screens can be installed. Use luminaires whose characteristics match that of a Type 5, 4, or 3 in table 2.10 of AS/NZS 1158.3.1. Upward light waste prevention: Use specifically designed lighting equipment that, once installed, minimises the spread of light near to, or above the horizontal. Additional diffs, louvres, or screens secured to luminaire body to withstand wind force test to clause 5.5 of AS/NZS 1158.6. Security lighting design considerations of clause 5.5.3 in ENA Doc 015-2006. The main considerations include: o o o o o
5.4
The boundary of the illumination area Providing safe illumination levels of the area The direction of the lights Housing surrounding the lighting Correct lamp selection
Luminaires The luminaires chosen must have low energy consumption at an optimum efficiency, be wastefree, provide quality illumination properties that have inherent long lifetime, minimise lamp disposal environmental risk and adhere to clause 3.3 Design Guidelines of AS/NZS 4282. Floodlights are either column-mounted or attached to the building. Luminaires must adhere to AS/NZS 1158.6. The degree of ingress protection to be provided is IP55.
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Refer to AS/NZS 1158.3.1 Sections 2.7.1 and 2.7.2 for more details.
TS 317: Substation Design – Indoor and outdoor lighting standard
Lighting columns 5.5.1
General
5.5.2
Minimum distances to power lines as per AS 2067 must be adhered to at all times. For more information, please also refer to Technical Standard TS 301 – Substation Design – General. Both tilt poles and frangible poles are not permissible unless approval has been obtained by Network Standards and Performance Equipment Group, and an appropriate Risk Assessment has been carried out. If approval has been given to use tilt poles, both current and future site layouts have to be considered to avoid interference with current/future equipment. Drawings shall note the direction of the swing. Electrically conductive poles must be earthed as per TS 320 – Substation Design – Earthing.
Preferred locations Preferred locations for lighting poles are around the perimeter of the substation – inside the substation fence. Poles shall be far enough away from the fence to not aid as a climbing device for intruders. Earthing design (avoidance of possible step and touch potential breach) shall also be considered when choosing locations of poles.
5.6
Luminaires not on lighting columns 5.6.1
Preferred locations Preferred locations for luminaires not mounted on lighting columns are attached to the substation building, as shown in the pictures below.
Figure 2: Floodlight attached to substation building
5.7
Illuminating access stairs and ramps Access stairs and ramps shall be illuminated as for the highest lighting subcategory applying to areas that abut the connecting element, as they can be classified as lighting subcategory P9. Please refer to AS/NZS 1158.3.1, Tables 2.4 and 2.8 for further information.
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5.5
TS 317: Substation Design – Indoor and outdoor lighting standard
5.8
Lighting activation 5.8.1
General The design must ensure automatic switching facility; switch on at sunset and switch off at sunrise via integral photo-electric sensor mechanisms. Manual switching facility must ensure lighting circuits can be conveniently switched on and off by hand, overriding automatic switching mode provision.
Light switches must be located to remove the need for a person to traverse under HV conductors to operate any such switch. In order of preference, light switches must be located in one of the following positions: 1. On the inside of the main entrance gate to substation; or 2. On the exterior of the control building at the closest point to the main gate entrance; or 3. Inside the control building on the substation main AC SWITCHBOARD. Clear signage must indicate the switching location for area lighting at any particular substation.
5.9
Lighting design Light structures (columns and luminaires) should be positioned with regard to both the current and future layout of the substation. The following should be considered when placing lights: Ensure that the desired light level will be obtained. This should be modelled using appropriate software packages. Ensure that they are not placed in a location that will interfere with lines or proposed future line routes. Columns must be positioned outside Vehicle Access Barriers, unless approval in writing has been given by Manager Network Standards and Performance. Trenching shall be reduced as much as possible, using existing ducts. Alternative design methods shall be considered first. All lighting shall be clearly labelled for easy identification within the switchboard. Lighting can be powered by a mobile generator to provide lighting in the case of a power outage where the substation is provided with a generator changeover switch and connection if required. The design option providing the lowest whole-of-life cost is preferred to options which provide short-term savings but higher maintenance costs. Where practical, lights to be operated by one switch only. Minimise the use of complicated wiring setups (involving relay switches etc) where possible. Provide surge arrestor in the AC supply to ensure lightning and other surges will not cause damage to the .
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The outdoor lighting design must include the requirement for the installation of clear signage, and ensure that the normal mode of operation is MANUAL mode.
TS 317: Substation Design – Indoor and outdoor lighting standard
Appendices
AS/NZS:
Australia and New Zealand Standards published by Standards Australia.
Ingress Protection
Classifies and rates the degree of protection provided against the intrusion (including body parts such as hands and fingers), dust, accidental , and water by mechanical casings and electrical enclosures
Lamp:
A light source.
Lighting column:
A rigid style lighting column without luminaire.
Luminaire:
An apparatus which distributes, filters or emits light from one or more lamps. It contains all the parts necessary for fixing and protecting the lamp and circuit auxiliaries.
LV (Low voltage):
Exceeding 50 volts ac or 50 volts ripple free dc but not exceeding 1,000 volts ac or 1,500 volts dc.
LV cables:
Cables where the primary voltage is exceeding 50V ac but less than 1,000V ac
Manager (NSP):
SA Power Networks Manager Network Standards and Performance.
Must:
Is to be understood as mandatory.
Shall:
Is to be understood as mandatory.
Should:
Is to be understood as non–mandatory, ie advisory or recommended.
Substation:
Part of a power system, concentrated in a given place, including mainly the terminations of transmission or distribution lines, switchgear and housing and which may also include transformers. It generally includes facilities necessary for system security and control (eg protective devices).
Suitable (or suitably):
To the satisfaction of the relevant SA Power Networks Manager.
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Appendix A: Definitions
TS 317: Substation Design – Indoor and outdoor lighting standard
Appendix B: References
South Australian Legislation: This technical standard is based on AS/NZS Standards Australia Publications. SA Electricity Act 1996 Electricity (General) Regulations 2012 WH&S Regulations 2012
Energy Networks Association (AUS) Publications:
ENA NENS 03 - 2006 ENA Doc 015 – 2006
National guidelines for safe access to electrical and mechanical apparatus National guidelines for prevention of unauthorised access to electricity infrastructure
Standards Australia Publications:
AS 4282-1997 Control of the obtrusive effects of outdoor lighting AS/NZS 1158.3.1:2005 Lighting for roads and public spaces – Pedestrian Areas (Category P) lighting AS/NZS 1158.6:2010 Lighting for roads and public spaces – Tunnels and underes AS/NZS 1680.0-2009 Interior Lighting - Safe Movement AS/NZS 1680.1-2006 Interior and Workplace Lighting - General Principles and Recommendations AS/NZS 1680.2.4-1997 Interior Lighting - Industrial tasks and Processes AS 2067-2008 Substations and high voltage installations exceeding 1kV a.c. AS/NZS 3000:2007 Electrical Installations (known as the AS/NZ Wiring Rules) AS/NZS 3133-2013 Approval and Test Specification – Air-break Switches AS/NZS 1158.3.1:2005 Lighting for roads and public spaces – Pedestrian Areas (Category P) Specifications – General (IEC 60081:2000 MOD) AS/NZS 4782.2-2004 Double-capped Fluorescent Lamps – Performance Specifications Minimum Energy Performance Standard (MEPS) AS/NZS 4783.1-2001 Performance of Electrical Lighting Equipment – Ballasts for Fluorescent Lamps - Method of Measurement to Determine Energy Consumption and Performance of Ballast Lamp Circuits AS/NZS 4783.2-2002 Performance of Electrical Lighting Equipment – Ballasts for Fluorescent Lamps - Energy Labelling and Minimum Energy Performance Standards Requirements
IEC Standards:
IEC 60061
Lamp caps and holders
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The following listed documents are for additional information but may not be a conclusive list and other documentation may be required on a project specific basis. Refer to the following SA legislative acts and regulations, SA Electricity Code, SA Power Networks’ publications, relevant AS/NZS and ENA standards for more detail. Please note: It is your responsibility to ensure you have complied with all relevant standards and that you have used the latest version.
TS 317: Substation Design – Indoor and outdoor lighting standard
SA Power Networks documents: Manual 14 TS 101 TS 105 TS 301 TS 318 TS 320
Safety, Reliability, Maintenance & Technical Management Plan Public lighting standard for overhead and underground networks Testing standard for underground and overhead cable networks Substation Design – General Substation Design – Emergency indoor lighting Substation Design – Earthing
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