1、 AMERICAN NATIONAL STANDARD FOR TELECOMMUNICATIONS ATIS-0600315.2018 Voltage Levels for DC-Powered Equipment Used in the Telecommunications Environment As a leading technology and solutions development organization, the Alliance for Telecommunications Industry Solutions (ATIS) brings together the to
2、p global ICT companies to advance the industrys most pressing business priorities. ATIS nearly 200 member companies are currently working to address the All-IP transition, 5G, network functions virtualization, big data analytics, cloud services, device solutions, emergency services, M2M, cyber secur
3、ity, network evolution, quality of service, billing support, operations, and much more. These priorities follow a fast-track development lifecycle from design and innovation through standards, specifications, requirements, business use cases, software toolkits, open source solutions, and interoperab
4、ility testing. ATIS is accredited by the American National Standards Institute (ANSI). The organization is the North American Organizational Partner for the 3rd Generation Partnership Project (3GPP), a founding Partner of the oneM2M global initiative, a member of the International Telecommunication
5、Union (ITU), as well as a member of the Inter-American Telecommunication Commission (CITEL). For more information, visit www.atis.org. AMERICAN NATIONAL STANDARD Approval of an American National Standard requires review by ANSI that the requirements for due process, consensus, and other criteria for
6、 approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necess
7、arily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made towards their resolution. The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the standard
8、s or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no p
9、erson shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. CAUTION
10、NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current informa
11、tion on all standards by calling or writing the American National Standards Institute. Notice of Disclaimer Transient voltage tolerance requirements for TLE; Noise immunity for TLE; Limits for noise returned by the TLE; Voltage levels for uniform Mean-Time-Between-Failure (MTBF) calculations; Underv
12、oltage requirements; Overvoltage requirements; Test procedures; Personnel hazards; and Marking. This standard is intended to be applied to equipment designed and manufactured after the effective issue date of this standard. Nothing in this standard should be interpreted to require the retrofitting o
13、f existing TLE or power plants. This standard does not restrict the development or use of telecommunications architectures that use other voltage levels and ranges. 2 References The following standard contains provisions, which, through reference in this text, constitute provisions of this American
14、National Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below.
15、 ATIS-0600315.2018 2 As references are added to the documents, they are added to the end of the respective reference list using the next sequential reference number. Normative references are numbered 1-99 and informative references are numbered starting from 101 in order to distinguish the type of r
16、eference based on the number. 2.1 Normative References 1 ATIS-0600311, DC power systems Telecommunications Environment Protection.12 IEC 61000-4-11 Revision/Edition 2.0, Electromagnetic Compatibility (EMC) - Part 4-11: Testing and Measurement Techniques - Voltage Dips, Short Interruptions and Voltag
17、e Variations Immunity Tests.23 NEMA PE-7-1997 (R2003), Communications Type Battery Chargers.32.2 Informative References 101 ATIS-0600313, Electrical Protection for Telecommunications Central Offices and Similar Type Facilities.4102 ATIS-0600401, Network to Customer Installation Interfaces - Analog V
18、oicegrade Switched Access Lines Using Loop-Start and Ground Start Signaling.5103 ATIS-0600409, Networks to Customer Installation Interfaces - Analog Voicegrade Special Access Lines Using E John R. Whinnery; and Theodore Van Duzer. Fields and Waves in Communication Electronics; Third Edition. Wiley,
19、1994. 3 Definitions, Abbreviations, 2. Provides network-to-user interfaces that do not require dc signaling; and3. Does not provide network-to-user interfaces. 10The performance requirements of telecommunications load equipment that provides network-to-user interfaces with dc signaling are specified
20、 by other standards (such as the ATIS-0600401 series) and documents such as ACTA 968 (Administrative Council for Terminal Attachments) Part 68 of the FCC Rules and Regulations. These standards, rules, and regulations require a minimum open circuit voltage of 42.5 Vdc at the Network Interface. In add
21、ition, they require provision for a minimum dc current through the interface. Much of the telecommunications load equipment that provides Network-to-User interfaces with dc signaling has been designed assuming a minimum input voltage of 42.75 Vdc. Examples of dc signaling are loop start, ground star
22、t, and Ear or o No greater than .5 / 2.4H; or o The values in Table 5.3 (20%). The power delivery system output voltage overshoot should be less than 5% when connecting and disconnecting a 5 10 % resistor (see IEC 61000-4-11). These specifications shall apply whenever the test generator or power amp
23、lifier is calibrated in an open-circuit condition regardless of the type of test generator or power amplifier used. The waveform with the EUT connected shall not be required to meet the waveform parameters of Figure 5.1 or Figures 5.2 through 5.4. The voltage applied to components forming the input
24、circuit of the EUT will depend on the circuit parameters of these components, and may not be identical with the open-circuit waveform shown in Figure 5.1. Method 2: With the EUT connected to the circuit. If all parameters and tolerances measured at the EUT input are met, then additional calibration
25、is not required. Method 3: With the calibration resistive load specified in Table 5.3 in series with a 1700 F electrolytic capacitor. The capacitor shall have a tolerance of 20 %. The waveform with the EUT connected shall not be required to meet the waveform parameters of Figure 5.1 or Figures 5.2 t
26、hrough 5.4. Calibration with smaller capacitance is allowed if measurements of EUT show that this capacitance is equal to or greater than the EUT input capacitance. The test leads connecting to the EUT should be twisted such that their inductance at 10kHz is no greater than 2.4uH. ATIS-0600315.2018
27、15 Method 4: With the calibration resistive load specified in Table 5.3. The calibration resistive load shall have a tolerance of 20 %. In this case, the waveform with the EUT connected shall be measured and provided with the test report. The rise and fall times measured with the EUT connected are n
28、ot required to meet the waveform parameters of Figure 5.1 or Figures 5.2 through 5.4; however, for the overvoltage and the undervoltage transient, the duration of transient shall be increased by the value equal to the difference between the specified rise (fall) time and the measured times. This mea
29、ns, that if the rise time or the fall time measured with the EUT connected is longer that specified, the duration of the transient shall be adjusted to meet the duration requirement. The test leads connecting to the EUT should be twisted such that their inductance at 10kHz is no greater than 2.4uH.
30、Table 5.3 - Selection of Calibration Resistance or maximum Output Impedance EUT Rated Current (Amps) Maximum output impedance of the test generator Calibration resistance 100 Approximately 1.5/I Approximately 50/I 50 100 0.015 0.5 25 50 0.03 1 16 25 0.06 2 3 16 0.1 3 3 0.5 17 NOTE: “I” is the curren
31、t drawn by the EUT at -50 Vdc. Each calibration method is equally acceptable. It is permitted to use a different calibration method for each of the three protective device operation transient tests. Also, it is permitted to use a different calibration method for different parameters within the same
32、waveform. The current values used to determine the calibration resistance are the values for the EUT as configured for the test. Calibration of the test circuit is to be performed only for the resistance values relevant to the particular EUT. C. With the equipment configured with a representative co
33、nfiguration of cards and shelves, apply power to the equipment with a voltage of -50.0 Vdc (0.5 Vdc) at the input terminals. Install the recommended circuit breaker or fuse in series with the input power conductor based on the configuration of the system. If the system is not fully configured or if
34、an appropriate fuse or circuit breaker is not specified, install an appropriate fuse or circuit breaker that is rated at 1.5 times the measured current when -50 Vdc is applied at the input terminals. Allow the equipment to stabilize and verify normal operation of the equipment under test. D. Apply t
35、he transients as specified in Figure 5.1 or Figures 5.2 through 5.4 using one of the four characterization methods described above. 5.5.2 Protective Device Operation Transient Conformance Conformance shall be based on all of the following: The equipment was not damaged and performance was not degrad
36、ed or affected by the application of the transients in Figure 5.1, or optionally the equipment was not damaged and was unaffected by the application of the transients in Figures 5.2 and 5.3. Either method is equally acceptable. If using the transient in Figure 4, the equipment shall not suffer perma
37、nent damage following the application of the test wave form when the equipment power returns to a nominal 50 Vdc. The equipment shall automatically return to its operational specifications without manual intervention within 30 minutes when using Figure 5.4. External fuses or circuit breakers that ar
38、e recommended or that are sized appropriately shall not operate as a result of the test. ATIS-0600315.2018 16 The equipment did not have its software or hardware provisioning affected by the application of the overvoltage transient as specified in and 5.5.1. 5.5.3 Protective Device Operation Transie
39、nt Test Report The test report shall specify all of the following in addition to the general items in 4.3: If the equipment complies with R-5. Characterization plots of the transient waveform(s). The actual dwell times at -5 Vdc and -75 Vdc. If the system was damaged, affected, required manual inter
40、vention, or operated the recommended fuse or circuit breaker, including details describing these events if they occurred. 5.6 Electrical Noise Requirements 5.6.1 Noise Immunity Telecommunications load equipment shall not be permanently damaged or permanently have its performance degraded in the pres
41、ence of electrical noise as specified in Tables 5.1 and 5.2 for any period of time.6Equipment software/firmware provisioning shall not be changed or lost as a result of the electrical noise. Figure 5.5 illustrates a suggested test circuit for performing this test. Requirement R-6: Equipment shall op
42、erate properly when exposed to electrical noise as described in 5.6.1.1 and shall comply with the conformance criteria as described in 5.6.1.2. Test results shall be recorded in a test report as described in 5.6.1.3. The analog voiceband tests shall apply only to equipment with analog voiceband (e.g
43、., POTS, modems) ports. 5.6.1.1 Noise Immunity Test Procedure A. The equipment under test and the test generators shall be configured according to Figure 5.5. This test does not require a fully populated system. Apply power to the equipment and set the voltage at -50.0 Vdc (0.5 Vdc) at the input ter
44、minals. Allow the equipment to stabilize and verify normal operation of the equipment under test. B. Depending upon the type of noise and frequency being generated, connect either the RF or the VF white noise generator. C. VF generators shall produce a reasonably flat response between 100 Hz and 10
45、kHz for the analog voiceband test, with the EUT disconnected. With the equipment under test connected, the dBrnc level shall be adjusted per Table 5.1 or Table 5.2, as appropriate. D. Record whether the equipment performance was affected by the presence of the analog voiceband noise. E. RF generator
46、s shall produce a reasonably flat response between 10 kHz and 20 MHz for the wideband test with the EUT disconnected. With the EUT disconnected, adjust the level such that all 3 kHz bands are 100 mVrms. If the frequency response with the EUT connected is not flat and has areas of over application of
47、 the noise, and the equipment performance is adversely affected, it is permissible to apply discrete 3 kHz bands of RF noise and sweep the entire frequency range with a dwell of at least 10 seconds at each band. This can be performed with the equipment connected, or can be performed by storing the a
48、ppropriate levels based on open circuit measurements. F. Record whether the equipment performance was affected by the presence of the wideband noise. G. For performing broadband testing based on peak to peak levels as specified in Table 5.1 and Table 5.2 as appropriate, an RF generator shall be used
49、. It shall be swept from 10 kHz to 20 MHz logarithmically, in 1% increments with a 3 s dwell. If EUT response time is longer than 3 s, then the minimum dwell time at each frequency shall be extended to allow EUT performance to be properly monitored. ATIS-0600315.2018 17 H. Record whether the equipment performance was affected by the presence of the broadband noise. Symbol Description Tolerance C1 100 F Bi-directional Capacitor +/-20% C2 100 F Bi-directional Capacitor +/-20% C3 1000 F Bi-directional
