{"id":254177,"date":"2024-10-19T16:47:40","date_gmt":"2024-10-19T16:47:40","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-60044-11999\/"},"modified":"2024-10-25T12:11:24","modified_gmt":"2024-10-25T12:11:24","slug":"bs-en-60044-11999","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-60044-11999\/","title":{"rendered":"BS EN 60044-1:1999"},"content":{"rendered":"

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\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>\nBRITISH STANDARD <\/td>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
4<\/td>\nForeword
Foreword to amendment A1
Foreword to amendment A2 <\/td>\n<\/tr>\n
5<\/td>\nContents <\/td>\n<\/tr>\n
7<\/td>\n1 General <\/td>\n<\/tr>\n
8<\/td>\n2 Definitions
2.1 General definitions
2.1.1 instrument transformer
2.1.2 current transformer
2.1.3 primary winding
2.1.4 secondary winding
2.1.5 secondary circuit
2.1.6 rated primary current
2.1.7 rated secondary current
2.1.8 actual transformation ratio
2.1.9 rated transformation ratio <\/td>\n<\/tr>\n
9<\/td>\n2.1.10 current error (ratio error)
2.1.11 phase displacement
2.1.12 accuracy class
2.1.13 burden
2.1.14 rated burden
2.1.15 rated output
2.1.16 highest voltage for equipment
2.1.17 highest voltage of a system
2.1.18 rated insulation level <\/td>\n<\/tr>\n
10<\/td>\n2.1.19 isolated neutral system
2.1.20 solidly earthed neutral system
2.1.21 impedance earthed (neutral) system
2.1.22 resonant earthed (neutral) system
2.1.23 earth fault factor
2.1.24 earthed neutral system
2.1.25 exposed installation
2.1.26 non-exposed installation
2.1.27 rated frequency <\/td>\n<\/tr>\n
11<\/td>\n2.1.28 rated short-time thermal current
2.1.29 rated dynamic current
2.1.30 rated continuous thermal current
2.1.31 exciting current
2.1.32 composite error
2.1.33 rated resistive burden
2.1.34 secondary winding resistance
2.1.35 multi-ratio current transformer <\/td>\n<\/tr>\n
12<\/td>\n2.2 Additional definitions for measuring current transformers
2.2.1 measuring current transformer
2.2.2 rated instrument limit primary current
2.2.3 instrument security factor
2.2.4 secondary limiting e.m.f
2.3 Additional definitions for protective current transformers
2.3.1 protective current transformer
2.3.2 rated accuracy limit primary current
2.3.3 accuracy limit factor
2.3.4 secondary limiting e.m.f.
2.3.5 class PR protective current transformer
2.3.6 saturation flux <\/td>\n<\/tr>\n
13<\/td>\n2.3.7 remanent flux
2.3.8 remanence factor
2.3.9 rated secondary loop time constant
2.3.10 excitation characteristic
2.3.11 class PX protective current transformer
2.3.12 rated knee point e.m.f.
2.3.13 rated turns ratio
2.3.14 turns ratio error
2.3.15 dimensioning factor <\/td>\n<\/tr>\n
14<\/td>\n3 Normal and special service conditions
3.1 Normal service conditions
3.2 Special service conditions <\/td>\n<\/tr>\n
15<\/td>\n3.3 System earthing
4 Ratings
4.1 Standard values of rated primary currents
4.2 Standard values of rated secondary currents
4.3 Rated continuous thermal current <\/td>\n<\/tr>\n
16<\/td>\n4.4 Standard values of rated output
4.5 Short-time current ratings
4.6 Limits of temperature rise <\/td>\n<\/tr>\n
17<\/td>\n5 Design requirements
5.1 Insulation requirements <\/td>\n<\/tr>\n
18<\/td>\nTable 4 <\/td>\n<\/tr>\n
19<\/td>\nTable 5 <\/td>\n<\/tr>\n
21<\/td>\nTable 16
5.2 Mechanical requirements <\/td>\n<\/tr>\n
22<\/td>\n6 Classification of tests
6.1 Type tests
6.2 Routine tests
6.3 Special tests <\/td>\n<\/tr>\n
23<\/td>\n7 Type tests
7.1 Short-time current tests
7.2 Temperature-rise test
7.3 Impulse tests on primary winding <\/td>\n<\/tr>\n
24<\/td>\n7.4 Wet test for outdoor type transformers <\/td>\n<\/tr>\n
25<\/td>\n7.5 Radio interference voltage measurement <\/td>\n<\/tr>\n
26<\/td>\n8 Routine tests
8.1 Verification of terminal markings
8.2 Power-frequency withstand tests on primary windings and partial discharge measurement
8.3 Power-frequency withstand tests between sections of primary and secondary windings and on sec… <\/td>\n<\/tr>\n
27<\/td>\n8.4 Inter-turn overvoltage test
9 Special tests
9.1 Chopped impulse test on primary winding <\/td>\n<\/tr>\n
28<\/td>\n9.2 Measurement of capacitance and dielectric dissipation factor
Table 9
9.3 Mechanical tests <\/td>\n<\/tr>\n
29<\/td>\n9.4 Transmitted overvoltages measurement
10 Markings
10.1 Terminal markings \u2014 General rules <\/td>\n<\/tr>\n
30<\/td>\n10.2 Rating plate markings <\/td>\n<\/tr>\n
31<\/td>\n11 Additional requirements for measuring current transformers
11.1 Accuracy class designation for measuring current transformers
11.2 Limits of current error and phase displacement for measuring current transformers <\/td>\n<\/tr>\n
32<\/td>\n11.3 Extended current ratings
Table 11
Table 12
Table 13
11.4 Type tests for accuracy of measuring current transformers
11.5 Routine tests for accuracy of measuring current transformers <\/td>\n<\/tr>\n
33<\/td>\n11.6 Instrument security factor
11.7 Marking of the rating plate of a measuring current transformer
12 Additional requirements for protective current transformers
12.1 Standard accuracy limit factors
12.2 Accuracy classes for protective current transformer
12.3 Limits of errors for protective current transformers <\/td>\n<\/tr>\n
34<\/td>\n12.4 Type and routine tests for current error and phase displacement of protective current transf…
12.5 Type tests for composite error
12.6 Routine tests for composite error
12.7 Marking of the rating plate of a protective current transformer <\/td>\n<\/tr>\n
35<\/td>\nTable 14
13 Additional requirements for class PR protective current transformers
13.1 Standard accuracy limit factors
13.2 Accuracy classes for class PR protective current transformers
13.3 Limits of error for class PR protective current transformers
Table 15
13.4 Type and routine tests for current error and phase displacement of class PR protective curre… <\/td>\n<\/tr>\n
36<\/td>\n13.5 Marking of rating plate of class PR current transformers
14 Additional requirements for class PX protective current transformers
14.1 Specification of performance for class PX protective current transformers
14.2 Insulation requirements for class PX protective current transformers
14.3 Type tests for class PX protective current transformers <\/td>\n<\/tr>\n
37<\/td>\n14.4 Routine tests for class PX protective current transformers
14.5 Marking of rating plate of class PX current transformers <\/td>\n<\/tr>\n
38<\/td>\nFigure 1 <\/td>\n<\/tr>\n
39<\/td>\nFigure 2
Figure 3 <\/td>\n<\/tr>\n
40<\/td>\nFigure 4
Figure 5 <\/td>\n<\/tr>\n
41<\/td>\nFigure 6
Figure 7 <\/td>\n<\/tr>\n
42<\/td>\nFigure 8 <\/td>\n<\/tr>\n
43<\/td>\nFigure 9 <\/td>\n<\/tr>\n
44<\/td>\nAnnex A (normative)
Protective current transformers
A.1 Vector diagram
A.2 Turns correction
A.3 The error triangle
A.4 Composite error <\/td>\n<\/tr>\n
45<\/td>\nA.5 Direct test for composite error
A.6 Alternative method for the direct measurement of composite error <\/td>\n<\/tr>\n
46<\/td>\nA.7 Use of composite error <\/td>\n<\/tr>\n
48<\/td>\nAnnex B (informative)
Multiple chopped impulse test <\/td>\n<\/tr>\n
49<\/td>\nAnnex ZA (normative)
Normative references to international publications with their corresponding European … <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Instrument transformers – Current transformers<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2003<\/td>\n50<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":254183,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[285,2641],"product_tag":[],"class_list":{"0":"post-254177","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-220-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/254177","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\/254183"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=254177"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=254177"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=254177"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}