IEEE-C93.5-1997.pdf
《IEEE-C93.5-1997.pdf》由会员分享,可在线阅读,更多相关《IEEE-C93.5-1997.pdf(42页珍藏版)》请在三一文库上搜索。
1、The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2004 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Printed in the United States of America. IEEE is a registered trademark in the U.S. Patent their
2、existence does not in any respect preclude anyone, whether he has approved the standards 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
3、 circumstances give an interpretation of any American National Standard. Moreover, no person 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 shall be addressed to the
4、secretariat or sponsor whose name appears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time.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 to reaffirm, revise, or withdraw this standa
5、rd no later than five years from the date of approval. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Published by National Electrical Manufacturers Association 1300 N. 17th Street, Rosslyn,
6、Virginia 22209 Copyright O 1997 National Electrical Manufacturers Association All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission o f the publisher. Printed in the United States of America Co
7、pyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 03:16:28 MDTNo reproduction or networking permitted without license from IHS -,-,- ANSI C93.5-1997 Copyright The Instit
8、ute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 03:16:28 MDTNo reproduction or networking permitted without license from IHS -,-,- Clause 1 2 3 4 5 6 STDeNEMA C93-5-ENGL 1997 = 6470247
9、0514365 I197 ANSI C93.5-1997 CONTENTS Page Foreword . v Scope . 1 Definitions 1 Referenced American National Standards . 1 Service Conditions . 4 4.1 Usual Service Conditions i . 4 4.2 Unusual Service Conditions 5 4.2.2 Vibration, Shock Requiremenis for Power-Line Carrier Line Tuning Equipment, ANSI
10、 C93.4-1984. Suggestions for improvement of this standard are welcome. They should be sent to Secretary, ASC C93, c/o NEMA, 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209. This standard was processed and approved for submission to ANSI by Accredited Standards Committee, C93, on Power-Line Car
11、rier Equipment and Coupling Capacitor Voltage Transformers. Committee approval of the standard does not necessarily imply that all committee members voted for its approval. At the time it approved this standard, the ASC C93 Committee had the following members: Waiter Seamon, Chairman Christopher F.
12、Merther, Secretaw Organization Represented Edison Electric Institute Institute of Electrical 100 watt units from 1 O watts to 1 O0 watts). Record the level measured at 30 kHz on the selective level meter. The 2000 ohm potentiometer should be set to maximum resistance. Reduce the potentiometer resist
13、ance until there is a change in the isolation voltage reading. If the voltage decreases (more isolation), the transmitter output is greater than R,. If the voltage increases, the transmitter output is less than R, Reset the potentiometer to the maximum value. Disconnect the transmitter from the hybr
14、id. Connect a multi-turn potentiometer of 1 O0 to 200 ohms to the common hybrid port. Vary the resistance until the selective level meter reading is the same as that recorded in step g. Check the value of this resistance to determine that it agrees with the findings of step g. concerning R,. This va
15、lue of resistance is the transmitter output impedance for the selected power level at 30 kHz. The output power can be increased to the rated value and the output impedance determined at the rated output level. The frequency of generator #2 shall be changed to other selected frequencies and the serie
16、s circuit capacitance values selected to resonate at these frequencies. Repeat steps b. through g. for frequencies up to 300 kHz (see table 4 ) . 12 Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=NASA Technical Standards 1/997254
17、5001 Not for Resale, 04/25/2007 03:16:28 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-MENA C93-5-ENGL 1997 m 6470247 0534383 102 W 75 150 ANSI C93.5-1997 3.0 1.5 3.0 0.375 j. Change the frequency of generator #1 to about 100 kHz to determine the transmitter output im
18、pedance at 350 kHz to 500 kHz. 300 500 k. The test specified above assumes a nominal transmitter output impedance of 50 ohms. For a 75 ohm transmitter, the values of all impedances in the test circuit shall be changed to 75 ohms. The hybrid shall also be changed to a 75 ohm unit. 1.5 0.187 1 .o 0.10
19、1 Table 4 - Transmitter Output Impedance Test Values I I 1- I I Capacitance I (mH) I (nF) Inductance Frequency ( k W I 30 I 3.0 I 9.38 -1 6.3.5 Return loss (RL) Using the values of the transmitter output impedance, z, measured in 6.3.4, the calculated return loss shall meet the rated return loss req
20、uirements: where: ZT= either 50 or 75 ohms 6.3.6 Load variations Set up the transmitter circuit to operate at rated output level into the nominal impedance. Change the load to one-half nominal load and check operation at 30, 100, 200, and 500 kHz. There shall be no clipping of the output signal and
21、the system shall meet the noise output specification across the entire carrier- frequency range. No damage shall result when the load is replaced with a short circuit and then an open circuit. 6.3.7 Carrier-frequency stability The purpose of this test is to check the stability of the transmitter out
22、put frequency during variations in temperature and supply voltage. These tests are specified in 6.3.23. 6.3.8 Transmitter noise emissions The purpose of this test is to check the noise emissions from the transmitter. The test circuit required for this test is shown in figure 5 and is pari of the tes
23、t circuit shown in figure 15. In this test circuit the noise emissions are measured using a spectrum analyzer. The spectrum analyzer may be replaced by a frequency selective voltmeter if desired. 13 Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license w
24、ith IEEELicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 03:16:28 MDTNo reproduction or networking permitted without license from IHS -,-,- STP.MEMA C93.5-ENGL 1997 AlTE N UATOR TRANSMITTER ANSI C93.5-1997 SPECTRUM ANALYZER ATTENUATOR TRANSMITTER . R= RATED TRANSMiTTER IMPED
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- IEEE C93 1997
链接地址:https://www.31doc.com/p-3770027.html