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IEEE Recommended Practice for General Principles for Temperature Limits in the Rating of Electrical Equipment and for the Evaluation of Electrical Insulation
Revision Standard - Active.
The preparation of standards that are principally concerned with the thermal endurance of electrical insulating materials and simple combinations of such materials is intended to be served by this recommended practice;
the establishment of limiting temperatures of electrical insulation systems is intended to be supported; and
general principles for the thermal classification of electrical insulation systems are intended to be provided.
Guiding principles are included for the development of test procedures for the following:
The principles are presented in the following order:
In the application of these principles, variations are necessary to suit the widely different types of equipment and service conditions that are considered in equipment standards.
When specific equipment, IEEE, or other recognized standards based on these principles are available, they should take precedence over this recommended practice.
This recommended practice is intended to serve in the preparation of standards that are principally concerned with the thermal endurance of EIM and simple combinations thereof, with the establishment of limiting temperatures of EIS, and with the provision of general principles for thermal classification of EIS.
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Version 1 - 2026-06-22
These Terms and Conditions (the “Terms”) consist of four parts that together form a single, integrated agreement governing access to the Nimonik Online Store and the purchase and use of Products from Nimonik:
Part A — Terms and Conditions of Sale, which governs the purchase of the Product;
Part B — End Customer Licence Agreement, which governs the use of the Product;
Part C — Use of the Website and Account, which governs use of the Nimonik Online Store and applies to all users, whether or not a purchase is made; and
Part D — General Terms, which applies to Parts A, B, and C.
By placing an order for, or accessing, downloading, printing, installing, or otherwise using, a Product or the Nimonik Online Store, you accept and agree to be bound by these Terms.
The following definitions apply throughout this document, including Part A and Part B:
”Nimonik” means Document Center Inc., a California corporation, with its registered office at 401 Roland Way, Ste#224, Oakland, CA, 94621, United States.
”Nimonik Online Store” means Nimonik’s online standards store at https://standards.nimonik.com, through which Products are offered, ordered, accessed, and delivered.
”Licensee” or “you” means the purchaser or end-user of the Product.
”Product” means the standard, publication, document, or other content supplied by Nimonik, whether in electronic format or in hard-copy printed format. Any reference to the Product includes the Product in its entirety or any part thereof, as applicable.
”Owner” means the copyright holder of the Product identified on or within the Product.
”Licence Fee” means the amount paid by the Licensee for the Product.
”T&Cs” means the Terms and Conditions of Sale set out in Part A.
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By placing an order for a Product, or by accessing, downloading, installing, or otherwise using the Product, the Licensee accepts and agrees to be bound by these T&Cs and by the End Customer Licence Agreement set out in Part B. The Licensee shall ensure that it has read and understood all applicable terms before completing the purchase.
Any questions regarding these Terms may be addressed to Nimonik via https://standards-nimonik.freshdesk.com/support/tickets/new
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In the event of any inconsistency, the End Customer Licence Agreement shall prevail with respect to the use of Products.
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IMPORTANT — READ CAREFULLY BEFORE DOWNLOADING, PRINTING, ACCESSING, OR OTHERWISE USING THE PRODUCT.
This agreement (the “Agreement”) sets out the terms on which the Licensee may use the Product. This Agreement is entered into together with, and forms part of the same overall agreement as, the T&Cs.
By placing an order for a Product, or by accessing, downloading, printing, installing, or otherwise using the Product, the Licensee accepts and agrees to be bound by this Agreement and the T&Cs. The Licensee shall ensure that it has read and understood all applicable terms before completing the purchase.
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The licence granted under this Agreement applies only to the specific edition of the Product purchased or downloaded by the Licensee. It does not include any previous or subsequent edition. Unless expressly agreed otherwise in writing, Nimonik does not provide document updates, maintenance, or support services for the Product.
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(b) Permitted use includes the right to access, read, consult, and internally reference the Product, and to understand, evaluate, and apply its content within the Licensee’s own internal operations, processes, and management systems.
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Where the Product is provided as a view-only PDF, the Licensee, as a single named user, may access and view the Product online as an authenticated user through the Licensee’s Nimonik Online Store account, but may not download, store, print, or otherwise reproduce the Product.
In all cases, concurrent use by two or more users, and any access to or storage of the Product on shared systems, networks, intranets, or shared drives, is not permitted.
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All right, title, and interest in and to the Product, together with any updates, corrections, derivative works, or ancillary materials, and all intellectual property rights therein, are and shall remain with the Owner. Where a Product is supplied in physical form, ownership of that physical medium may transfer to the purchaser; however, all intellectual property rights in the content of the Product remain with the Owner. Nothing in this Agreement assigns, transfers, or grants the Licensee any intellectual property rights in the Product, except for the limited rights expressly set out herein.
If Nimonik or its licensors are no longer authorized to license a Product, or if a claim of infringement arises or in Nimonik’s opinion is likely to arise, Nimonik may withdraw access to the Product temporarily or permanently, and the Licensee shall promptly suspend or cease all use of such Product. Nimonik may also, in its sole discretion, discontinue or withdraw any Product.
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training, fine-tuning, or evaluating language models, machine-learning systems, generative AI models, or similar models or systems;
embedding, prompting, querying, comparing, or otherwise enabling an AI or ML model or system to ingest, reproduce, restate, summarize, translate, reformulate, or generate outputs derived from the Product;
structured extraction, text and data mining, harvesting, or processing of the text, structure, logic, metadata, or other elements of the Product for model training, dataset creation, benchmarking, or automated knowledge extraction; or
any other activity intended to enable an AI or ML system to ingest, analyze, internalize, or generate content based on the Product.
The Licensee may not rely on any statutory text-and-data-mining or similar exception to justify AI- or ML-related use of the Product.
The Licensee shall maintain accurate, complete, and up-to-date records relevant to its use of the Product and its compliance with this Agreement. If Nimonik has reasonable grounds to believe that the Licensee is not complying with this Agreement, Nimonik may, upon written notice, conduct an audit or require that an audit be carried out by an independent third-party auditor, during normal business hours at the Licensee’s premises or through remote access, as appropriate. Any underpayment of Licence Fees identified through an audit shall be invoiced to the Licensee and paid in full; if the audit reveals an underpayment, the Licensee shall also bear the reasonable costs of the audit and reimburse Nimonik within thirty (30) days of written notice.
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(a) Nimonik warrants for your benefit alone that, unless disclosed in the Product to the contrary, Nimonik and the Owner can license the Product and all copyright and trademarks related thereto or therein.
(b) THE EXPRESS WARRANTIES SET FORTH IN THIS SECTION 7 CONSTITUTE THE ONLY WARRANTIES WITH RESPECT TO THE PRODUCT, AND NIMONIK AND THE OWNER MAKE NO OTHER REPRESENTATION OR WARRANTY OR CONDITION OF ANY KIND, WHETHER EXPRESS OR IMPLIED (EITHER IN FACT OR BY OPERATION OF LAW), WITH RESPECT TO ANY OF THE PRODUCT, INCLUDING, WITHOUT LIMITATION, WITH RESPECT TO THE SUFFICIENCY, ACCURACY, OR UTILIZATION OF, OR ANY INFORMATION OR OPINION CONTAINED OR REFLECTED IN, ANY OF THE PRODUCT. NIMONIK AND THE OWNER EXPRESSLY DISCLAIM ALL WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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(a) Whether or not Nimonik or the Owner has been advised of their possibility, neither Nimonik nor the Owner nor any of their representatives, agents, directors, officers, employees, or members shall be liable, whether under contract, tort (including negligence), or otherwise, for any indirect, special, punitive, incidental, or consequential loss, damage, cost, or expense of any kind whatsoever and howsoever caused that may be suffered by you or any third party. You are responsible for the consequences of any use of any of the Product.
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(c) TO THE MAXIMUM EXTENT PERMITTED BY LAW, AND NOTWITHSTANDING ANYTHING TO THE CONTRARY IN THIS AGREEMENT, THE TOTAL AGGREGATE LIABILITY OF NIMONIK AND THE OWNER ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT OR ANY PRODUCT SHALL NOT EXCEED THE LICENCE FEE PAID BY THE LICENSEE FOR THE PRODUCT GIVING RISE TO THE CLAIM. NOTHING IN THIS AGREEMENT EXCLUDES OR LIMITS LIABILITY THAT CANNOT BE EXCLUDED OR LIMITED UNDER APPLICABLE LAW, INCLUDING LIABILITY FOR DAMAGE CAUSED BY GROSS NEGLIGENCE OR INTENT.
This licence is granted only for the edition of the Product confirmed in Nimonik’s order confirmation and does not grant any rights to revisions or new editions of the Product. This Agreement may be terminated immediately by the Owner or Nimonik upon breach of any provision by you. Upon any expiration or termination of this Agreement, you shall immediately discontinue all use of the Product and shall, within ten (10) days, either return any hard-copy Product to Nimonik or certify in writing to Nimonik that all electronic copies of the Product (including any printed copy and any backup copy) have been permanently deleted from your devices and eliminated from your premises. Provisions that by their nature are intended to survive termination shall so survive.
You may not load, export, or re-export any of the Product, or any underlying information or technology, except in full compliance with all United States and other applicable laws and regulations.
BY ACCESSING, DOWNLOADING, PRINTING, OR OTHERWISE USING THE PRODUCT, YOU ACKNOWLEDGE THAT YOU HAVE READ THE TERMS OF THIS LICENCE AGREEMENT AND AGREE TO BE BOUND BY ITS TERMS.
This section applies to everyone who accesses or uses the Nimonik Online Store, whether or not a purchase is made. In this section, “you” means any such user.
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Acceptable Use. You shall not use the Nimonik Online Store in any unlawful manner; attempt to gain unauthorized access to, interfere with, or disrupt the Nimonik Online Store or its underlying systems; introduce any malware or other harmful code; or use any robot, spider, scraper, or other automated means to access, harvest, index, or copy the Nimonik Online Store or its catalogue, except for standard search-engine indexing. You shall not resell, or provide commercial access to, the Nimonik Online Store. You shall not circumvent, disable, or interfere with any security, access control, or digital rights management (DRM) or other technical protection measure applied to the Nimonik Online Store or any Product.
Website Intellectual Property. The Nimonik Online Store, including its design, layout, text, graphics, logos, and trademarks is owned by Nimonik or its licensors and is protected by applicable laws. Accessing the Nimonik Online Store grants you no rights in it other than the limited right to access and use it to browse and purchase Products. Use of the Products themselves is governed by Part B.
Website Availability. The Nimonik Online Store is provided on an “as is” and “as available” basis. Nimonik does not warrant that it will be uninterrupted, error-free, or secure, and may modify, suspend, or discontinue all or part of it at any time without notice. The disclaimers and limitations of liability in Part A, Section 7 apply equally to your access to and use of the Nimonik Online Store.
This Part D applies to Parts A, B, and C and to all access to and use of the Nimonik Online Store and the Products.
Governing Law and Dispute Resolution. These Terms are governed exclusively by the laws of the State of California, United States, without reference to its conflict of laws principles and to the exclusion of the United Nations Convention on Contracts for the International Sale of Goods. The parties consent to the exclusive jurisdiction of the state and federal courts located in California, United States. In any action to enforce these Terms, the prevailing party shall be entitled to recover its reasonable attorneys’ fees and costs.
Changes to these Terms. Nimonik may amend or update these Terms at any time by posting the revised Terms in the Nimonik Online Store. The version of these Terms in effect at the time an order is placed governs that order, and the version in effect at the time the Nimonik Online Store is used governs that use. Continued use of the Nimonik Online Store or any Product following any change constitutes acceptance of the revised Terms.
Order of Precedence. Parts A, B, and C are to be read together as a single agreement. In the event of any inconsistency concerning the use of a Product, Part B prevails; in the event of any inconsistency concerning use of the Nimonik Online Store, Part C prevails.
Customer Terms Excluded. Any terms and conditions proposed by the Licensee, whether referenced in an order or contained in any other document, are expressly excluded and shall have no effect.
No Trademark Rights. Nothing in these Terms grants the Licensee any right to use Nimonik’s or the Owner’s trademarks, logos, or other brand identifiers. Any such use requires separate written authorization, and any unauthorized use constitutes a breach of these Terms.
Electronic Communications. By using the Nimonik Online Store or placing an order, the Licensee consents to receive communications from Nimonik electronically, including invoices, notices, and other records, and agrees that such electronic communications satisfy any legal requirement that a communication be in writing.
Force Majeure. Nimonik shall not be liable for any failure or delay in performance resulting from causes beyond its reasonable control, including acts of God, natural disasters, labor disputes, carrier delays, failures of telecommunications or internet services, governmental action, or other events of force majeure.
Assignment. The Licensee may not assign or transfer these Terms, or any rights or obligations under them, without Nimonik’s prior written consent. Nimonik may freely assign these Terms. These Terms are binding upon and inure to the benefit of the parties and their permitted successors and assigns.
Waiver. No failure or delay by Nimonik in exercising any right under these Terms shall operate as a waiver of that right, and no single or partial exercise of any right shall preclude any further exercise of that or any other right.
Severability. If any provision of these Terms is held to be invalid, illegal, or unenforceable, it shall be limited or reformed only to the minimum extent necessary to make it enforceable, and the remaining provisions shall remain in full force and effect.
Entire Agreement. These Terms (Parts A, B, C, and D), together with the applicable order confirmation, constitute the entire agreement between Nimonik and the Licensee with respect to the Nimonik Online Store and the Products, and supersede all prior or contemporaneous understandings or agreements, whether written or oral. Headings are for convenience only and do not affect interpretation.
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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.
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