{"id":82449,"date":"2024-10-18T03:05:22","date_gmt":"2024-10-18T03:05:22","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-469-1988\/"},"modified":"2024-10-24T19:50:13","modified_gmt":"2024-10-24T19:50:13","slug":"ieee-469-1988","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-469-1988\/","title":{"rendered":"IEEE 469 1988"},"content":{"rendered":"

Revision Standard – Inactive – Withdrawn. Instruction for the testing of distribution transformers as sources of voice-frequency noise for communication circuits is provided. The tests measure the degree to which a transformer may contribute to electrical noise in communication circuits that are physically paralleling the power-supply circuits feeding the transformer. They provide a standard method for use by the transformer manufacturer, user, and others in the industry for the purpose of better evaluating the design choices that are available and moving toward industry objectives with regard to levels of harmonic exciting current.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nTitle page <\/td>\n<\/tr>\n
3<\/td>\nForeword
Participants <\/td>\n<\/tr>\n
5<\/td>\nCONTENTS <\/td>\n<\/tr>\n
7<\/td>\n1. Introduction and References
1.1 General
1.2 References <\/td>\n<\/tr>\n
8<\/td>\n2. Definition of Terms
2.1 Inductive Influence (Electric Supply Circuit With Its Associated Apparatus)
2.2 c-Message Weighting.
2.3 Telephone Influence Factor <\/td>\n<\/tr>\n
10<\/td>\n2.4 I \u00b7 T Product (As Applicable to the Electrical Supply Circuit).
2.5 kV \u00b7 T Product (As Applicable to Inductive Coordination).
3. Purpose of Tests
3.1
3.2 <\/td>\n<\/tr>\n
11<\/td>\n3.3
4. Test Facilities <\/td>\n<\/tr>\n
12<\/td>\n4.1 Power Source
4.2 Instrumentation <\/td>\n<\/tr>\n
14<\/td>\n4.3 Transformer Under Test
4.4 Circuit Evaluation <\/td>\n<\/tr>\n
15<\/td>\n5. Measurements
5.1
5.2
5.3
5.4
5.5
6. Calculation of I \u00b7 T Results
6.1 <\/td>\n<\/tr>\n
16<\/td>\n6.2 <\/td>\n<\/tr>\n
17<\/td>\n6.3
6.4
6.5 <\/td>\n<\/tr>\n
18<\/td>\n7. Calculation of kV \u00b7 T Results
7.1 <\/td>\n<\/tr>\n
19<\/td>\n7.2
7.3
8. Examples <\/td>\n<\/tr>\n
20<\/td>\n9. Limit Criteria
9.1
9.2
9.3
9.4
9.5 <\/td>\n<\/tr>\n
21<\/td>\n9.6
9.7
9.8
9.9 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Recommended Practice for Voice-Frequency Electrical-Noise Tests of Distribution Transformers<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n1988<\/td>\n21<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":82450,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-82449","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ieee","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/82449","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/82450"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=82449"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=82449"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=82449"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}