REG NASA-LLIS-0774-2000 Lessons Learned - Electrical Isolation Verification (DC).pdf
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REG NASA-LLIS-0774-2000 Lessons Learned - Electrical Isolation Verification (DC).pdf
1、Best Practices Entry: Best Practice Info:a71 Committee Approval Date: 2000-04-11a71 Center Point of Contact: JPLa71 Submitted by: Wil HarkinsSubject: Electrical Isolation Verification (DC) Practice: Direct current (DC) electrical isolation verification tests are made as part of the EMC test of hardw
2、are prior to final spacecraft assembly. Flight acceptance isolation retest is required after any hardware rework of subsystems with electrical interfaces that utilize system wiring.Abstract: Preferred Practice for Design the only requirement is that it exceed 1 megohm per circuit (0.5 megohm for two
3、 circuits, etc.).This is a relatively simple measurement which can be made with minimum impact on other activities during spacecraft assembly. A number of problems, such as inadvertent grounds have been detected by this test which may have passed the normal checkout test operations.Impact of Non-Pra
4、ctice: Erratic or uncontrolled performance may occur which could compromise or abort the mission.Related Practices: N/AAdditional Info: Approval Info: a71 Approval Date: 2000-04-11a71 Approval Name: Eric Raynora71 Approval Organization: QSa71 Approval Phone Number: 202-358-4738Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
