ANSI C78.42-2004 电灯 高压钠灯.pdf

ANSI C78.42-2004
Revision of ANS.42-2001
American National Standard
Approved: December 30, 2004 Secretariat: ANSLG-NATIONAL Electrical Manufacturers Association
or electric lamos
High-pressure Sodium Lamps
Copyright 2004 by American National Standard Lighting Group- NEMA
ANSI C78.42-2004
American
Approval of an American National Standard requires verification
Nationa
by ANSI that the requirements for due process, consensus, and
Standard
other criteria for approval have been met by the standards
developer. An American National Standard implies a consensus
of those substantially concerned with its scope and provisions
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
necessarily unanimity. Consensus requires that all views and
objections be considered, and that a concerted effort be made
oward their resolution. The existence of an American Nationa
Standard does not in any respect preclude anyone, whether s/he
has approved
the standard or not, from manufacturing, W
marketing, purchasing, or using products, processes, o
procedures not conforming to the standards. It is intended as a T
guide to aid the manufacturer, the consumer, and the general
public
The American National Standards Institute does not develop
standards and will in no circumstances give an interpretation of
any American National Standard. Moreover, no person shall
have the right or authority to issue an interpretation of an m-
American National Standard in the name of the American
National Standards Institute. Requests for interpretations should
be addressed to the Committee Secretariat referred to on the title
page
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revised or Withdrawn at any time.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 periodically to reaffirm, revise, or withdraw this standard
Purchasers of American National Standards may receive current
information on all standards by calling or writing the American
National Standards Institute
Printed and distributed by
Information Handling Services/Global Engineering Documents
15 Inverness Way East, Englewood, CO 80112-5776
Under Contract with National Electrical Manufacturers Association
Copyright @2004 by American National Standard Lighting Group
In Affiliation with 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 of the publisher
rinted in the United States of America
Copyright @2004 by American National Standard Lighting Group- NEMA
National Electrical Manufacturers Association It is illegal to resell or modify this publication
TheSlandardisdownloadedfromwww.bzlxw.comSlandardSharing