{"id":82347,"date":"2024-10-18T03:04:17","date_gmt":"2024-10-18T03:04:17","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-389-1990\/"},"modified":"2024-10-24T19:49:53","modified_gmt":"2024-10-24T19:49:53","slug":"ieee-389-1990","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-389-1990\/","title":{"rendered":"IEEE 389 1990"},"content":{"rendered":"

Revision Standard – Inactive – Superseded. A number of tests are presented for use in determining the significant parameters and performance characteristics of electronics transformers and inductors. These tests are designed primarily for transformers and inductors used in all types of electronics applications, but they may apply to the other types of transformers of large apparent-power rating used in the electric power utility industry. Some of the tests are intended for qualifying a product for a specific application, while others are test practices used widely for manufacturing and customer acceptance testing. A guide for particular application categories is included.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
5<\/td>\nMeasurement <\/td>\n<\/tr>\n
10<\/td>\n1 Scope
Recommended Practice Is Applicable
1.2 References <\/td>\n<\/tr>\n
11<\/td>\n2 Definitions
How to Specify Electronic Transformers
Insulation and Corona Tests
4.1 General
4.2 Electric Strength Test (Also Known as Hi-Pot Test) <\/td>\n<\/tr>\n
12<\/td>\nTypical High-Potential Test Showing Sec 1 Under Test
Typical High-Potential Test of Inductor <\/td>\n<\/tr>\n
13<\/td>\nGroups <\/td>\n<\/tr>\n
15<\/td>\nInduced Potential Test
Fig 3 Block Diagram of Induced Voltage Surge Test <\/td>\n<\/tr>\n
17<\/td>\n4.4 Corona Tests
Resistance Tests
5.1 General <\/td>\n<\/tr>\n
18<\/td>\nTypical Circuit for Corona Measurement Circuit
Typical Circuit for Corona Measurement Circuit <\/td>\n<\/tr>\n
19<\/td>\n5.2 Resistance Values Under 1 Ohm
Measurement of Low Resistance
Kelvin Double-Bridge Method of Measuring Low Resistance <\/td>\n<\/tr>\n
20<\/td>\nResistance Values from 1 Ohm to Many Kilohms
Ammeter and Voltmeter Method of Resistance Measurement <\/td>\n<\/tr>\n
21<\/td>\nMeasurement of Resistance by Substitution <\/td>\n<\/tr>\n
22<\/td>\nResistance Values from Under 1 Ohm to Many Kilohms
Principle of Series Ohmmeter
Digital Ohmmeter Method of Resistance Measurements <\/td>\n<\/tr>\n
23<\/td>\nLoss Measurements
6.1 No-Load Loss <\/td>\n<\/tr>\n
24<\/td>\nTriangular Flux-Density Variation in Transformer Core
Suggested Values for Specifying No-Load Tests <\/td>\n<\/tr>\n
25<\/td>\nTest Circuit for Transformer No-Load Losses <\/td>\n<\/tr>\n
26<\/td>\nExcitation Apparent-Power Measurements
6.3 Stray-Load Losses <\/td>\n<\/tr>\n
27<\/td>\nShort-circuit Power Test
Simplified Diagram for Short-circuit Power Test <\/td>\n<\/tr>\n
28<\/td>\nEfficiency and Power Factor
Ratio of Transformation
7.1 General <\/td>\n<\/tr>\n
29<\/td>\n7.2 Measurement Methods <\/td>\n<\/tr>\n
30<\/td>\n7.3 Impedance Unbalance
Resistive Ratio Bridge
Bridge with Ratio Transformer
Ratio of Transformation from Voltage Measurements <\/td>\n<\/tr>\n
31<\/td>\n7.4 Balance Tests
Bridge Circuit for Measurement of Impedance Unbalance <\/td>\n<\/tr>\n
32<\/td>\nTest Circuits for Balance Tests <\/td>\n<\/tr>\n
33<\/td>\n7.5 Polarity Tests
8 Transformer Capacitance
8.1 General
8.2 Interwinding Capacitance
Polarity Test Using Voltage Measurements <\/td>\n<\/tr>\n
34<\/td>\nMeasuring Techniques for Transformer Capacitance
Simplified Circuit for Transformer Capacitance Measurement
Test Circuit for Interwinding Capacitance Measurement <\/td>\n<\/tr>\n
35<\/td>\n8.3 Distributed Capacitance
8.4 Bridge Methods
9 Inductance Measurements by Impedance Bridge Method
9.1 General
Test Circuit for Distributed Capacitance Measurement
Circuit for Bridge Method <\/td>\n<\/tr>\n
36<\/td>\nMethod of Measurement <\/td>\n<\/tr>\n
37<\/td>\nTypical Bridge Circuits for Inductance Measurements <\/td>\n<\/tr>\n
39<\/td>\n10 Transformer Response Measurements
Transformer Frequency Response
Test Circuit for Frequency Response Measurements <\/td>\n<\/tr>\n
40<\/td>\nTest Circuit for Frequency Response Measurements with DC CurrenW <\/td>\n<\/tr>\n
41<\/td>\nTransformer Pulse Response
Alternate Method for Frequency Response Measurements
Measurement of Transformer Loss <\/td>\n<\/tr>\n
42<\/td>\nTest Circuit for Low-Level Pulse Response <\/td>\n<\/tr>\n
43<\/td>\nNoise Tests
Test Conditions for Audible Noise
Measurement of Audible Noise
11.3 EM1 Noise
Terminated Impedance Measurements
12.1 General
Sound-Level Corrections for Noise Tests <\/td>\n<\/tr>\n
44<\/td>\n12.2 Return-Loss Method
Return-Loss Bridges <\/td>\n<\/tr>\n
45<\/td>\nReturn-Loss Measurement <\/td>\n<\/tr>\n
46<\/td>\nTemperature Rise Tests
13.1 Test Methods
Determination of Resistance at Zero Time <\/td>\n<\/tr>\n
47<\/td>\n14 Self-Resonance
14.1 General
14.2 Measurement
Measurement of Self-Resonance <\/td>\n<\/tr>\n
48<\/td>\nVoltage-Time Product Rating
15.1 General
Product Test Method
Waveforms for Voltage-Time Product Test Method <\/td>\n<\/tr>\n
49<\/td>\n16 Shielding
16.1 Electronic Shielding
Test Circuit for Rectangular Pulse Excitation
Basic Electrostatic Symbol
Shielded Single Winding Core Floating
Multiple Shielded Single Winding Core Terminal (Lead) Provided <\/td>\n<\/tr>\n
50<\/td>\nShielded Two.Winding Secondary Core Grounded
Shielded Group of Windings Core Floating
Multiple Shielded Group of Windings Core Terminal (Lead) Provided
Combination of Shielding Conditions
Typical Two-Winding Shielded Transformer
Simplified Representation of Fig <\/td>\n<\/tr>\n
51<\/td>\n16.2 Magnetic Shielding
Indirect Measuring Method for Electronic Shielding <\/td>\n<\/tr>\n
52<\/td>\nMeasurement of Quality Factor Q
17.1 Definition
17.2 Methods
17.3 Bridge Measurements <\/td>\n<\/tr>\n
53<\/td>\n17.4 &-Meter Measurements
17.5 Transmission Method
Circuit Magnification for Basic Method <\/td>\n<\/tr>\n
54<\/td>\nDamped Oscillation Method
Transmission Method <\/td>\n<\/tr>\n
55<\/td>\nDamped Oscillation Method <\/td>\n<\/tr>\n
56<\/td>\nOscilloscope Sweep for Damped Oscillation Method <\/td>\n<\/tr>\n
57<\/td>\nCommon-Mode Rejection Test
Inrush-Current Evaluation and Measurement
19.1 Measurement
19.2 Calculation
Common-Mode Rejection Test <\/td>\n<\/tr>\n
58<\/td>\n19.3 Other Considerations
Current Transformer Test
20.1 General <\/td>\n<\/tr>\n
59<\/td>\nRatio and Phase Angle
21 Bibliography
Test Circuit for Current Transformers <\/td>\n<\/tr>\n
60<\/td>\nInductors and Transformers
General
True rms Measurements <\/td>\n<\/tr>\n
61<\/td>\nFlux Voltage Measurements
Applications
High-Potential Dielectric Testing
General
Leakage Current <\/td>\n<\/tr>\n
62<\/td>\nCorona
Test Equipment Requirement <\/td>\n<\/tr>\n
63<\/td>\nAn AC Magnetic Field Pickup Probe <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IEEE Recommended Practice for Testing Electronic Transformers and Inductors<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n1990<\/td>\n64<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":82348,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-82347","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\/82347","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\/82348"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=82347"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=82347"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=82347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}