1、 AMERICAN NATIONAL STANDARD FOR TELECOMMUNICATIONS ATIS-0600015.04.2017 Energy Efficiency for Telecommunication Equipment: Methodology for Measurement and Reporting DC Power Plant Rectifier Requirements As a leading technology and solutions development organization, the Alliance for Telecommunicatio
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5、e, a member of the International Telecommunication 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
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11、ican National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Notice of Disclaimer 2) controlled ferroresonant rectifiers; and 3) switchmode rectifiers (newest). This standard includes the most common North American single p
12、hase and three phase 120, 208, 240, 277, 480 Vac inputs and +/- 24, 48, 380 Vdc outputs. There are additional standard voltages used internationally. 5 Metric Definition 5.1 Preamble For the evaluation of power plant rectifiers, it is necessary to consider normal operating conditions over the life c
13、ycle of the rectifier(s). A rectifier in a DC power plant can be expected to operate between 30% and 80% of rated capacity, depending on the application. In telecommunication power plants, variables include: Power forecasts. Engineering planning cycle. Redundancy. Recharge requirements. Rectifier ef
14、ficiency varies by utilization level as shown in Figure 5.1. Efficiency will be 0% at no load, achieve peak efficiency, and drop off at max load. The rise to peak efficiency varies by technology. Power plant control and energy management are beyond the scope of this standard. ATIS-0600015.04.2017 4
15、Figure 5.1 Sample Switchmode Rectifier Efficiency Curve 5.2 Rectifier TEER If we define the efficiency as the ratio of power dissipated by a specific load and power drawn from the source, then it is straightforward to calculate the Rectifier TEER from the equation below. Efficiency: null nullnullnul
16、lnullnullnullnullWhere: is efficiency. POUT is simply the DC output power in Watts as shown below. PIN is the AC input real power in Watts as shown below. DC Output Power in Watts: nullnullnullnull nullnullnullnullnull nullnullnullnullnull Where: VOUT = Output Voltage. IOUT = Output Current. ATIS-06
17、00015.04.2017 5 AC Input Real Power in Watts: nullnullnull nullnullnullnull nullnullnullnull nullnullnullnullnullnull Where: VIN = Input RMS Voltage (line-to-neutral voltage for 1 input, line-to-line voltage for 3 and split phase 240 VAC input). IIN = Input RMS Current. PF = Power Factor. PM = Phase
18、 Multiplier: 1 for 1 input, 3 for 3 input5. The rectifier TEER is a summation of the efficiency measurements at 10% intervals from 30% to 80% of the EUT rated power divided by the number of samples and multiplied by 1000. The TEER has a maximum value of 1000. TEER Formula: nullnullnullnull null null
19、 nullnull null10%nullnullnullnullnull6null1000 Where: = efficiency at a particular load point as defined above. i = index from three (3) to eight (8) in steps of one (1) corresponding to measurements of efficiency at percentage of loads from 30% to 80% of rectifier output power rating (in 10% increm
20、ents). 6 Test Procedure 6.1 Measurements The test methodology and test conditions used to independently verify the power consumption shall meet the requirements and utilize the test procedures and conditions called out in ATIS-0600015, as well as this document. Where conflicts occur, this document s
21、upersedes other standards. 6.2 Test Conditions The EUT shall be evaluated with a source providing the following conditions: A power source with a rating of at least two times the maximum input power rating of the rectifier and a Total Harmonic Distortion of 2% (up to and including the 13thharmonic)
22、shall be used for the tests. AC input voltage shall be the specified nominal voltage 5% and frequency 1%. Rectifiers designed to operate at multiple input voltages shall be tested at the minimum and maximum supported nominal operating input voltage from Table 6.1. Equipment may be tested at intermed
23、iate voltages from Table 6.1. 5Note that the power in for 3 systems can also be construed as the sum of three 1 inputs. When equally balanced across three phases, this is 3 times the power in for any one feed. However, since the line-to-neutral voltage for a 1 input is 1/3 times the line-to-line vol
24、tage, the 3 PM = 3 / 3 = 3. ATIS-0600015.04.2017 6 Table 6.1 Common AC Input Voltages in North America 1 Split phase 3 120LN 240LL 208 208LL 480 277LN During testing of three phase systems, a three phase meter shall be used. The AC voltage measured at the input of the rectifier shall not vary more t
25、han 5% over the load range. A variable resistive load bank with sufficient capacity for at least 110% of the maximum output rating of the rectifier shall be connected to the load terminals. In order to allow for precise selection of DC load current, a precision electronic load bank is recommended. S
26、ince a telecommunications facility is expected to be operating off mains or generator voltage 99% of the time, it is important to measure the output voltage at the float voltage of the rectifier. For example, a -48 Vdc system usually runs at -53 1 Vdc. Similarly, a 24 Vdc system typically runs at 26
27、.5 0.5 Vdc. Therefore, rectifiers for standard voltages shall be tested at the corresponding test voltage shown in Table 6.2. Table 6.2 Test Voltages for Common Nominal Output Voltages Nominal Voltage (Vdc) Float Voltage (Vdc) Test Voltage (Vdc) 24 26.5 0.5 26.5 0.5 -48 -53 1 -53 1 336/380 378 7 378
28、 7 For other output voltages, the test voltage shall be the nominal voltage multiplied by 1.1 2%. A power analyzer shall be connected at the output terminals and the following measurements shall be recorded simultaneously as required in Table 7.1 for each supported combination of input voltages, inp
29、ut phases, and output voltages: o Input RMS Voltage (VIN) o Input RMS Current (IIN) o Input Real Power (PIN) o Input Apparent Power (SIN) o Input Power Factor (PF) o Output Voltage (VOUT) o Output Current (IOUT) o Output Power (POUT) NOTE: a calibrated shunt and meter may be used to record the outpu
30、t current and calculate the output power. 7 Reporting & Documentation 7.1 Power Measurement Data All products claiming compliance with this specification shall provide the information as defined in ATIS-0600015. In addition, the report shall include the following nameplate rating information plus Ta
31、ble 7.1 and ATIS-0600015.04.2017 7 Table 7.2 for each supported combination of input voltages, input phases, and output voltages: Input Voltage(s) Number of Phases Total Harmonic Distortion Maximum Input Current(s) Output Voltage(s) Maximum Output DC Current The efficiency () and TEER for each table
32、 shall be calculated for each table as defined in Section 5.2 and called out in Table 7.1 and Table 7.2. Table 7.1 Power Measurement Report VIN IIN PIN SIN PF VOUT IOUT POUT Load (% of Rated Power) VRMS ARMS kW kVA - Vdc Adc kW % % 30 40 50 60 70 80 Table 7.2 TEER Calculation TEER nullnullnullnull null nullnullnull%nullnullnullnull%nullnullnullnull%nullnullnullnull%nullnullnullnull%nullnullnullnull%6null1000 Value
