{"id":82280,"date":"2024-10-18T03:03:29","date_gmt":"2024-10-18T03:03:29","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-iec-60076-21-2011\/"},"modified":"2024-10-24T19:49:41","modified_gmt":"2024-10-24T19:49:41","slug":"ieee-iec-60076-21-2011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-iec-60076-21-2011\/","title":{"rendered":"IEEE IEC 60076 21 2011"},"content":{"rendered":"

– Active. Adoption of IEEE Std C57.15-2009. Description of design types, tables of 50 Hz and 60 Hz ratings, supplementary ratings, construction, and available accessories are provided. Methods for performing routine and design tests applicable to liquid-immersed single and three-phase step-voltage regulators are described. Winding resistance measurements, polarity tests, insulation power factor and resistance tests, ratio tests, no load loss and excitation current measurements, impedance and load loss measurements, dielectric tests, temperature tests, routine and design impulse tests, short-circuit tests, control tests, calculated data, and certified test data are covered.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nIEC 60076-21:2011(E) Front cover <\/td>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
6<\/td>\nFOREWORD <\/td>\n<\/tr>\n
14<\/td>\n1. Overview
1.1 Scope
1.2 Purpose
1.3 Word usage <\/td>\n<\/tr>\n
15<\/td>\n2. Normative references <\/td>\n<\/tr>\n
16<\/td>\n3. Definitions <\/td>\n<\/tr>\n
21<\/td>\nFigures
Figure 1 \u2014Schematic diagram of single-phase, Type A, step-voltage regulator
Figure 2 \u2014Schematic diagram of single-phase, Type B, step-voltage regulator <\/td>\n<\/tr>\n
22<\/td>\n4. Service conditions
4.1 Usual service conditions <\/td>\n<\/tr>\n
23<\/td>\n4.2 Loading at other than rated conditions
4.3 Unusual service conditions <\/td>\n<\/tr>\n
24<\/td>\nTables
Table 1 \u2014Dielectric strength correction factors for altitudes greater than 1000 m (3300 ft) <\/td>\n<\/tr>\n
25<\/td>\n4.4 Frequency
5. Rating data
5.1 Cooling classes of voltage regulators <\/td>\n<\/tr>\n
26<\/td>\n5.2 Ratings
Table 2 \u2014Limits of temperature rise <\/td>\n<\/tr>\n
27<\/td>\nTable 3 \u2014Preferred ratings for liquid-immersed 60 Hz step-voltage regulators (single phase) <\/td>\n<\/tr>\n
28<\/td>\nTable 4 \u2014Preferred ratings for liquid-immersed 50 Hz step-voltage regulators (single phase) <\/td>\n<\/tr>\n
29<\/td>\nTable 5 \u2014Preferred ratings for liquid-immersed 60 Hz step-voltage regulators (three phase) <\/td>\n<\/tr>\n
30<\/td>\n5.3 Supplementary continuous-current ratings
Table 6 \u2014Preferred ratings for liquid-immersed 50 Hz step-voltage regulators (three phase)
Table 7 \u2014Supplementary voltage ratings for 60 Hz voltage regulators <\/td>\n<\/tr>\n
31<\/td>\n5.4 Taps
5.5 Operating voltage limits
Table 8 \u2014Supplementary continuous-current ratings for single-phase voltage regulators
Table 9 \u2014Supplementary continuous-current ratings for three-phase voltage regulators <\/td>\n<\/tr>\n
32<\/td>\nTable 10 \u2014Typical examples of operating voltage limits including all operating voltage tolerances <\/td>\n<\/tr>\n
33<\/td>\n5.6 Voltage supply ratios
5.7 Insulation levels
Table 11 \u2014Values of voltage supply ratios
Table 12 \u2014Interrelationships of dielectric insulation levels for voltage regulators used on systems with BIL ratings of 200 kV and below <\/td>\n<\/tr>\n
34<\/td>\n5.8 Losses <\/td>\n<\/tr>\n
35<\/td>\n5.9 Short-circuit requirements
Table 13 \u2014Values of K <\/td>\n<\/tr>\n
36<\/td>\n5.10 Tests <\/td>\n<\/tr>\n
37<\/td>\n6. Construction
6.1 Bushings <\/td>\n<\/tr>\n
38<\/td>\n6.2 Terminal markings
Figure 3 \u2014Single-phase voltage regulators
Table 14 \u2014Electrical characteristics of voltage regulator bushings (kV) <\/td>\n<\/tr>\n
39<\/td>\n6.3 Diagram of connections
6.4 Nameplates
Figure 4 \u2014Three-phase voltage regulators <\/td>\n<\/tr>\n
40<\/td>\n6.5 Tank construction <\/td>\n<\/tr>\n
42<\/td>\nFigure 5 \u2014Support lugs B <\/td>\n<\/tr>\n
43<\/td>\nFigure 6 \u2014Support lugs C <\/td>\n<\/tr>\n
44<\/td>\n6.6 Components and accessories <\/td>\n<\/tr>\n
45<\/td>\n7. Other requirements
7.1 Other supplementary continuous-current ratings
7.2 Other components and accessories
Table 15 \u2014Bushing terminal applications
Table 16 \u2014Other supplementary continuous-current ratings for three-phase voltage regulators <\/td>\n<\/tr>\n
46<\/td>\n8. Test code <\/td>\n<\/tr>\n
47<\/td>\n8.1 Resistance measurements <\/td>\n<\/tr>\n
48<\/td>\nFigure 7 \u2014Connections for voltmeter-ammeter method of resistance measurement <\/td>\n<\/tr>\n
49<\/td>\n8.2 Polarity test <\/td>\n<\/tr>\n
50<\/td>\n8.3 Ratio tests
Figure 8 \u2014Voltage regulator connected for polarity testing; voltage regulator in neutral position <\/td>\n<\/tr>\n
52<\/td>\nFigure 9 \u2014Voltmeter arranged to read the difference between the two output side voltages
Figure 10 \u2014Voltmeters arranged to read the two series winding voltages <\/td>\n<\/tr>\n
53<\/td>\n8.4 No-load losses and excitation current
Figure 11 \u2014Basic circuit of ratio bridge <\/td>\n<\/tr>\n
54<\/td>\nFigure 12 \u2014Connection for no-load loss test of single-phase voltage regulator without instrument transformers <\/td>\n<\/tr>\n
55<\/td>\nFigure 13 \u2014Connections for no-load loss test of a single-phase voltage regulator with instrument transformers <\/td>\n<\/tr>\n
57<\/td>\nFigure 14 \u2014Three-phase voltage regulator connections for no-load loss and excitation current test using three-wattmeter method <\/td>\n<\/tr>\n
58<\/td>\n8.5 Load losses and impedance voltage
Table 17 \u2014Requirements for phase-angle error correction <\/td>\n<\/tr>\n
61<\/td>\nFigure 15 \u2014Single-phase voltage regulator connections for load loss and impedance voltage test without instrument transformers
Figure 16 \u2014Single-phase voltage regulator connections for load loss and impedance voltage test with instrument transformers <\/td>\n<\/tr>\n
62<\/td>\nFigure 17 \u2014Three-phase voltage regulator connections for load loss and impedance voltage test using the three-wattmeter method <\/td>\n<\/tr>\n
64<\/td>\n8.6 Dielectric tests <\/td>\n<\/tr>\n
76<\/td>\nTable 18 \u2014Measurements to be made in insulation power factor tests <\/td>\n<\/tr>\n
77<\/td>\n8.7 Temperature-rise tests <\/td>\n<\/tr>\n
79<\/td>\nFigure 18 \u2014Example of loading back method: Single phase <\/td>\n<\/tr>\n
80<\/td>\nFigure 19 \u2014Example of loading back method: three phase <\/td>\n<\/tr>\n
86<\/td>\n8.8 Short-circuit tests <\/td>\n<\/tr>\n
90<\/td>\n8.9 Calculated data <\/td>\n<\/tr>\n
94<\/td>\n9. Control systems
9.1 General
9.2 Control device construction <\/td>\n<\/tr>\n
95<\/td>\n9.3 Control system requirements <\/td>\n<\/tr>\n
96<\/td>\n9.4 Tests <\/td>\n<\/tr>\n
97<\/td>\nTable 19 \u2014Voltage-level values for select line-drop compensation settings <\/td>\n<\/tr>\n
100<\/td>\nAnnex A (informative) Unusual temperature and altitude conditions <\/td>\n<\/tr>\n
102<\/td>\nAnnex B (informative) Field dielectric tests <\/td>\n<\/tr>\n
103<\/td>\nAnnex C (informative) Bibliography <\/td>\n<\/tr>\n
105<\/td>\nAnnex D (informative) IEEE List of Participants <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Power Transformers Part 21: Standard Requirements, Terminology, and Test Code for Step-Voltage Regulators<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IEEE<\/b><\/a><\/td>\n2011<\/td>\n108<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":82281,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2644],"product_tag":[],"class_list":{"0":"post-82280","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\/82280","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\/82281"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=82280"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=82280"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=82280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}