IPS/WHMA-A is an individual level certification based on a standard published by IPC titled “Requirements and Acceptance for Cable and Wire Harness. The IPC/WHMA-A Standard Revision C remains the only industry-consensus standard for Requirements and Acceptance of Cable and Wire Harness. The IPC/WHMA-A, Requirements and Acceptance for Cable/Wire Harness Assemblies is a joint project of IPC (Institute of Printed Circuits) and WHMA (Wire .
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Additional languages are continuously being added. In addition, the energy levels are very low test current is measured in mA and performed under room temperature conditions.
Program Benefits Certification demonstrates commitment to customer requirements and greatly facilitates certification to ISO Certification or other quality assurance initiatives. A research project at Sandia National Labs tested aircraft wiring for degradation at thousands of volts without degradation.
Use of this standard requires agreement on the classes to which the product opc/whma-a-620. Revision C materials are not yet available. Typically, the end-use environment would not cause failures.
An Introduction to A Cable Testing Standard
This test must continue for some minimum time. The NEW AC optional hands-on training has been developed to help users become familiar with the basics of cable and wire harness fabrication. Not all modules have updated slides. Because of multiple parameters outside of IPC’s control: Longer times have better chances of detecting faults.
Space addendum for C course materials are available!
IPC-WHMA-A Training and Certification | IPC
This question most often arises from those doing work under military contracts where interpretations for different requirements may conflict. Revision C, developed by task group members from user and supplier companies, represents a consensus among industry leaders.
This means that the measured resistance starts lower and trends higher over time. The following paragraph was added. Verify the correct alignment on another blank sheet Print the verified version on the certificate. The A requirements specify that electrical tests should operate at such levels as not to degrade the electrical properties. Class 2 – Dedicated Service Electronic Products Includes products where continued performance and extended life is required, and for which uninterrupted service is desired but not critical.
None of the information on this page is a substitute for having a copy of the A Rev B standard. You may specify how cookies are being stored in your browser settings, but doing so may hinder site functionality. The Insulation Resistance test IR detects a more consistent current flow between insulated conductors, stated as a resistance, by factoring in the applied voltage.
You can purchase the current version A Rev B at whma. As a guide, you can see what problems you might encounter with your particular creepage distance using the Arc Gap Calculator. Am I caught in a double bind where these required test voltages are considered destructive and render the assembly unusable for service?
IPC/WHMA-A-620 Certification Definition
To shorten production test time without degrading the test, the IR ipc/whja-a-620 time ends as soon as the minimum resistance value is reached. Class 3 – High Performance Electronic Products Includes products where continued ipc/whma-z-620 or performance-on-demand is critical, equipment downtime cannot be tolerated, end-use environment may be uncommonly harsh, and the equipment must function when required, such as life support systems and other critical systems.
An optional eight-hour hands-on course is available.
Further details of these changes can be found at the bottom ipc/whma-z-620 this page. The following changes were implemented in A Rev B: Updates to Training Materials for Amendments These files are being made available to update existing training PowerPoints ipc/whms-a-620 each of the indicated courses with the changes in the Amendments for each course.
When testing at VDC the gap must be larger than. If the User and Manufacturer do not establish and document the acceptance class, ipc/whmq-a-620 Manufacturer may do so. Even wire for industrial and commercial applications is usually tested in the manufacturing process. Includes products suitable for applications where the major requirement is the function of the completed assembly. When tested, the voltage used is in the thousands of volts.
By having earned this portable credential, you’ll receive immediate recognition, legitimacy and value throughout the electronics industry.