1、 AMERICAN NATIONAL STANDARD FOR TELECOMMUNICATIONS ATIS-0600010.01.2017 Temperature, Humidity, Altitude, and Salt Fog Requirements for Network Telecommunications Equipment Utilized in Outside Plant Environments ATIS-0600010.01.2017 ii Foreword The information contained in this Foreword is not part o
2、f this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. As such, this Foreword may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformanc
3、e to the Standard. The Alliance for Telecommunication Industry Solutions (ATIS) serves the public through improved understanding between providers, customers, and manufacturers. The Sustainability in Telecom: Energy and Protection (STEP) Committee formerly the Network Interface, Power, and Protectio
4、n (NIPP) Committee engages industry expertise to develop standards and technical reports for telecommunications equipment and environments in the areas of energy efficiency, environmental impacts, power, and protection. The work products of STEP enable vendors, operators, and their customers to depl
5、oy and operate reliable, environmentally sustainable, energy efficient communications technologies. STEP is committed to proactive engagement with national, regional, and international standards development organizations and forums that share its scope of work. ANSI guidelines specify two categories
6、 of requirements: mandatory and recommendation. The mandatory requirements are designated by the word shall and recommendations by the word should. Where both a mandatory requirement and a recommendation are specified for the same criterion, the recommendation represents a goal currently identifiabl
7、e as having distinct compatibility or performance advantages. Suggestions for improvement of this document are welcome. They should be sent to the Alliance for Telecommunications Industry Solutions, STEP, 1200 G Street NW, Suite 500, Washington, DC 20005. At the time of consensus on this document, S
8、TEP, which was responsible for its development, had the following roster: K. Biholar, STEP Chair (Alcatel-Lucent) J. Krahner, STEP Vice Chair (Cisco) C. Forbes, STEP NPP Chair (NTS) C. Von Hagel, STEP NPP Vice Chair (Intertek) The Network Physical Protection (NPP) Subcommittee was responsible for th
9、e development of this document. ATIS-0600010.01.2017 iii Table of Contents 1 Scope, Purpose, however, they are expected to remain within the Class 3 limits as specified in this standard. Examples of equipment that are likely to be located in a Class 3 Environment are similar to Class 2, but may also
10、 include an enclosure. While the Class 3 Environment is protected from direct precipitation, it depicts an environment that was not originally intended to protect active electronics. As such, high humidity and condensing moisture may occur in this environment. Class 3 Environments are considered ext
11、reme and thus only applicable in special applications where these extreme temperature and humidity limits are deemed necessary by the service provider. Class 4, Unprotected Environment: An environment where the equipment (electronics and cabinet/enclosure as a system) is directly exposed to the OSP
12、environment. The equipment may be exposed to a wide range of temperature and humidity conditions that are uncontrolled, and as a result the ambient temperature and humidity surrounding the equipment is expected to be within the Class 4 limits as specified in this standard. Examples of equipment syst
13、ems that might be exposed to Class 4 Environments are repeater housings, apparatus cases, OSP DSLAMs, cabinets, National Electrical Manufacturers Association (NEMA) enclosures, pedestals, Intelligent Network Interface Devices (INIDs), Network Interface Devices (NIDs), or similar types of exposed equ
14、ipment that includes the electronics and a known or integral enclosure that provides the protection from the elements. Exposure to all outside elements could occur in this environment. 4.1 Operating Temperature Humidity Environment Table 4.1 Operating Environment Classification Env. Class Temperatur
15、e Range1Humidity Range 2 -40 to 65C (-40 to 149F) 5 to 85% RH 3 -40 to 70C (-40 to 158F) 5 to 95% RH 4 -40 to 46C (-40 to 115F) plus solar loading 2 to 100% RH ATIS-0600010.01.2017 5 NOTE: These values represent the possible environmental extremes that may be encountered, not necessarily testing lim
16、its within this standard. 4.2 Operating Altitude Environment It is expected that network equipment may be routinely installed at elevations up to 1829 m (6000 ft) above sea level. In some cases, network equipment may be installed at elevations up to 3962 m (13,000 ft) above sea level. At high elevat
17、ions, the lower density of the air reduces its cooling capacity. Appropriate cooling capacity must therefore be provided. These criteria apply to all equipment. NOTE: For equipment with pressure sensitive components, the mechanical effects of reduced air density and pressure on components and assemb
18、lies must be considered. The high altitude environment is defined in Table 4.2. Table 4.2 High Altitude Environments Temp Altitude (Above Sea Level) Class 2 57C (135F) 1829 m (6000 ft) Class 3 62C (144F) Class 4 38C (100F) Plus Solar Loading Equipment intended for very high altitude installations, C
19、lass 2 40C (104F) 3962 m (13,000 ft) Equipment intended for very high altitude installations, Class 3 45C (113F) Equipment intended for very high altitude installations, Class 4 21C (70F) Plus Solar Loading 4.3 Storage Is rectangular in shape, allowing multiple units to be placed closely together fo
20、r a larger array of lights and for easy stacking of fixtures for a self-supporting configuration; The back of the fixture is removable allowing access to the bulb mounting and to provide additional cooling when the light is operated at high test temperatures; Includes a universal ballast that operat
21、es over a choice of voltages; and Accommodates a 1000W metal halide bulb and is suitable for vertical operation. In order to optimize the uniformity and intensity of the light, the bulb mounting location can be moved deeper into the fixture and 12.7 cm (5 inch) reflectors can be added to the perimet
22、er of the lights. The angle of the reflectors and the depth of the bulb mounting can be adjusted to provide the desired uniformity of the solar intensity. The metal halide light has a correlated color temperature of 5000K that provides an energy distribution close to natural light. The bulb is also
23、suitable for universal orientation (horizontal or vertical, base up or down). Intensity of solar flux: The intensity of the applied solar flux shall be measured normal to the gross surface contour illuminated at a minimum of six points per each surface. (It is recommended that the points be located
24、on a rectangular grid with a maximum grid spacing of 30.5 cm 12 inches.) The measured intensity of the solar flux shall not be lower than the average intensity by more than 15%. Conversely, the measured intensity of the solar flux may be higher than the average intensity by more than 15%, but the in
25、tensity value used for the average calculation shall be limited to 15%. Measured solar flux intensity shall include both direct radiation from the solar simulator and reflected radiation from the test specimen. Reflectors and other such devices may be used to adjust the intensity directed upon the e
26、nclosure surface. Calibration of Solar Simulator: An ideal light source will produce a parallel beam of light from a parabolic reflector which will have a uniform irradiation throughout the beam. For most of the possible choices for a lighting array, the intensity will not be very uniform. Measuring
27、 the intensity on a grid of no more than 30.5 cm (12 inches) is acceptable if the average intensity between the 30.5 cm (12 inch) grid is about the same as the desired intensity, but it is more likely to be much greater or much less depending on the choice of light fixture and how the grid is aligne
28、d with lights. For example, an array of small lights spaced ATIS-0600010.01.2017 13 on a 30.5 cm (12 inch) grid will have higher intensity directly under the light and much less in-between. A fixture with the bulb perpendicular to the face of the light fixture will have an area directly over the bul
29、b where the intensity is much less than the surrounding area. Also, a fixture with the bulb mounted parallel to the face of the light fixture will have a greater intensity in the center of the fixture and much less at the perimeter. Given the geometry of a typical fixture, a grid spacing of 15.2 cm
30、(6 inches) is a better choice to ensure an overall intensity closer to the desired level. Spectral Distribution: The spectral distribution of the solar simulator shall be reasonably close to that of natural sunlight, especially in the Visible and Near Infrared portions of the spectrum as indicated i
31、n Table 6.5. Table 6.5 Spectral Distribution of Solar Simulator Spectral Region Wavelength (nm) Percentage of Spectrum of Natural Sunlight Percentage of Total Spectrum Required for Solar Simulator Lower Limit Upper Limit Ultra-Violet B 280-320 0.45% Not Required Not Required Ultra-Violet A 320-400 5
32、.6% 2.0% 7.0% Visible 400-780 50.0% 45.0% 55.0% Near Infrared 780-3000 43.9% 35.0% 53.0% Solar flux intensity and spectral distribution of the solar simulators shall be checked periodically as recommended by the manufacturer but not less frequently than every 500 hours of operation or 6 months, whic
33、hever accumulates first. Instrumentation used to measure the solar flux intensity shall be accurate to within 10 W/m2(1 W/ft2) in the spectral region between 320-3000 nm. 7 Operating Temperature Humidity Test Methods R-3 (Required): Equipment intended for Class 2, 3, and 4 Environments shall be test
34、ed in accordance with the “Cold Start” test described in clause 7, and shall comply with the applicable conformance criteria of clause 7. R-4 (Required): Equipment intended for Class 2, 3, and 4 Environments shall be tested in accordance with the “Hot Start” Test described in clause 7, and shall com
35、ply with the applicable conformance criteria of clause 7. R-5 (Required): Equipment intended for Class 2, 3, and 4 Environments shall be tested in accordance with the applicable “Operational Temperature and Humidity Cycling” test(s) described in clause 7, and shall comply with the applicable conform
36、ance criteria of clause 7. R-6 (Required): Equipment intended for Class 2, 3, and 4 Environments shall be tested in accordance with the applicable “Fan Failure” test described in clause 7 and shall comply with the applicable performance criteria of clause 7. Test results shall be recorded in a test
37、report as described in clause 10 for requirements R-3, R-4, R-5, and R-6. NOTE: The Operational Temperature and Humidity Test is intended to demonstrate that the equipment is capable of operating and functioning as intended when temperature and humidity conditions are encountered as defined for a sp
38、ecific Environmental Class. It is not intended as an accelerated life or reliability test. Informative Annex B contains a 100-cycle accelerated life test that can be used by manufacturers as part of their internal reliability or quality program. 7.1 Description These test methods use test sequences
39、that validate proper equipment operation based on the environmental temperature and humidity parameters specified in Table 6.1. ATIS-0600010.01.2017 14 7.2 Test Apparatus however, actual production samples are not required. If testing is performed with pre-release hardware and changes occur prior to
40、 release, the changes must be analyzed to determine if they may reasonably impact the outcome of the tests. If a significant impact is indicated, the testing shall be repeated on released hardware. These simulations are “type tests” and are generally performed on a single equipment assembly or a sin
41、gle integrated system. For the purpose of this test, an equipment assembly is the smallest grouping of equipment sold by the manufacturer as a standalone piece of equipment. Examples of equipment assemblies typically installed in Class 2 or Class 3 Environments include equipment shelves, fuse and al
42、arm panels, multiplexers, etc. Examples of equipment assembles typically installed in Class 4 Environments include integrated electronics/cabinets/enclosures such as INIDs, apparatus cases, repeater housings, pad/pole mount EECs, etc., where the electronics and cabinet/enclosure are a defined or uni
43、que system. This list is not intended to be all-inclusive, but rather to provide guidance. When systems are marketed as integrated solutions, the tests shall be performed with the entire cabinet/enclosure populated with a representative deployment. The equipment under test shall be populated in a ma
44、nner that either provides or simulates the highest expected heat load, except for the cold start test. In some cases, it is impractical to monitor every function of a system. ATIS-0600010.01.2017 15 Monitoring of functional performance shall be reasonably practical with special emphasis on circuits
45、that provide or control network traffic. 7.4 Preconditioning The equipment under test shall be preconditioned and should be unpowered. The duration shall be at least 1 hour at the initial condition of 23C 3C (73.4F 5.4F) and 50% RH 10% RH. The equipment shall then be powered and enabled to provide i
46、ts defined functionality. The equipment shall be allowed to reach stable internal temperatures before beginning the functional checks. Stable temperature is when the internal air temperature of the product changes no more than 2C (3.6F) per hour. 7.5 Testing Note if conducting the following operatio
47、nal tests using the same equipment throughout, then it is recommended that the tests be conducted in the following sequence: 1. Hot Start. 2. Cold Start. 3. Operating Temperature, Humidity, Altitude, and Salt Fog. This sequence is intended to provide protection for the units under test. 7.5.1 Equipm
48、ent Operation The equipment under test shall be in its operational state throughout the tests. Input and load conditions shall be chosen to obtain full utilization of the equipment under test, except for the cold-start test where the load shall be minimized, as detailed in the test plan. The equipme
49、nt under test shall be installed in a physical configuration representative of its intended use. The following variables shall be considered and adjusted to give the most unfavorable conditions: Loads due to optional features, offered or provided by the manufacturer for inclusion in or with the EUT. Loads due to other units of equipment intended by the manufacturer to draw power from the EUT. Loads that could be connected to any standard supply outlets in operator access areas on the equipment, up to the marked rating. It is perm
