- Inactive-Withdrawn.
This Guide presents general recommendations for determining, by approximate methods from nameplate data and by more exact methods from design data, the short-circuit characteristics of direct-current motors and generators. Both methods are applicable to General Purpose, General Industrial Mill Motors, and Special Purpose direct-current machines. This includes constant-speed and adjustable-speed motors and machines with and without compound windings, and with and without compensating windings. 1.0.2 This Guide is intended to help those concerned with the transient characteristics of directcurrent machines and direct-current systems and the effects of these transients on their operation. The calculated values of rate of rise and peak armature current will facilitate the proper selection of system components which will safely withstand the mechanical and thermal stresses during fault. When only nameplate data is available, the approximate methods presented will yield results sufficiently accurate for estimates. Values computed by this method will be high, in general, thus on the safe side. Additional data from machine design sheets, or tests, will permit use of the more exact methods of computation with the view of minimizing the size of components and circuit protective equipment
The purpose of this Guide is to:
(a) Review the factors that affect the short circuit characteristics of direct-current machinery.
(b) Recommend equations for calculating the transient armature and field current from design parameters.
(c) Recommend methods for approximating the rate of rise and peak value of armature current from nameplate data.
(d) Discuss the causes of flashover and its effect on short-circuit current and effective armature-circuit resistance.
| SDO | IEEE: Institute of Electrical and Electronics Engineers |
| Document Number | 66 |
| Publication Date | June 30, 1957 |
| Language | en - English |
| Page Count | 8 |
| Revision Level | |
| Supercedes | |
| Committee |
Please enter your email address to continue ...
Have an account?
IMPORTANT - READ CAREFULLY BEFORE DOWNLOADING OR COPYING TO YOUR COMPUTER ANY FILE(S) CONTAINED HEREWITH.
BY ACCESSING THE PRODUCT, YOU ACKNOWLEDGE THAT YOU HAVE READ THE TERMS OF THIS LICENSE AGREEMENT AND AGREE TO BE BOUND BY ITS TERMS.
We're glad to see you again! Please enter your email and password to continue
Need an account?
Register for an account to join our community! Gain access to exclusive content, participate in discussions, and stay updated on the latest news.
Have an account?
Forgot your password? No worries! Please enter your email to reset your password. If your email exists in our system, you will receive a password reset link.
Have an account?
We've sent an email to reset your password if an account with that email exists. Please check your inbox and follow the instructions in the email. If you don't see the email, please check your spam folder.
Please read these terms of service ("terms", "terms of service") carefully before using Document-Center/Nimonik website (the "service") operated by Nimonik ("us", 'we", "our").
We will provide their services to you, which are subject to the conditions stated below in this document. Every time you visit this website, use its services or make a purchase, you accept the following conditions. This is why we urge you to read them carefully.
Before you continue using our website we advise you to read our Privacy Policy regarding our user data collection. It will help you better understand our practices.
Content published on this website (digital downloads, images, texts, graphics, logos) is the property of Nimonik and/or its respective licensors and protected by international copyright laws. The entire compilation of the content found on this website is the exclusive property of Nimonik and its respective licensors, with copyright authorship for this compilation by Nimonik and its respective licensors.
The entire communication with us is electronic. Every time you send us an email or visit our website, you are going to be communicating with us. You hereby consent to receive communications from us. If you subscribe to the news on our website, you are going to receive regular emails from us. We will continue to communicate with you by posting news and notices on our website and by sending you emails. You also agree that all notices, disclosures, agreements and other communications we provide to you electronically meet the legal requirements that such communications be in writing.
This privacy policy will explain how our organization uses the personal data we collect from you when you use our website.
Topics:
Our Company collects the following data:
Your data protection rights:
We have sent a verification email to you. Please check your inbox and follow the instructions in the email to verify your account. If you don't see the email, please check your spam folder.
We use cookies to enhance your browsing experience and analyze our traffic. By clicking "Accept All", you consent to our use of cookies.
These cookies are always on, as they're essential for making this website work, and making it safe. Without these cookies, services you've asked for can't be provided.
Remembers your cookie preferences and consent choices. Required for GDPR compliance. Duration: 1 year. Purpose: Legal Compliance
Protects against Cross-Site Request Forgery attacks. Required for form submissions and security. Duration: Session (expires when browser closes). Purpose: Security
Maintains your login session and authentication state. Essential for security and user experience. Duration: Session (expires when browser closes). Purpose: Authentication
These cookies help us analyse how many people are using this website, where they come from and how they're using it. If you opt out of these cookies, we can't get feedback to make this website better for you and all our users.
Google Analytics 4 cookie that maintains session state and tracks page views within a session. Duration: 2 years. Purpose: Website Analytics
Domain: localhostGoogle Analytics cookie that distinguishes unique users by assigning a randomly generated number as a client identifier. Duration: 2 years. Purpose: Website Analytics
Domain: localhostYou have been redirected from document-center.com to our new store, run by the same great Document Center team.
If you had a Document Center account, please check your email for instructions from standards@nimonik.com to reset your password with us.
For any questions or assistance, visit our Support Portal or email us at standards@nimonik.com