{"id":444099,"date":"2024-10-20T08:36:03","date_gmt":"2024-10-20T08:36:03","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-c37-60-2012-3\/"},"modified":"2024-10-26T16:02:42","modified_gmt":"2024-10-26T16:02:42","slug":"ieee-c37-60-2012-3","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-c37-60-2012-3\/","title":{"rendered":"IEEE C37.60-2012"},"content":{"rendered":"
Revision Standard – Superseded. This part of IEC 62271 applies to all overhead, pad mounted, dry vault and submersible single or multi-pole alternating current automatic circuit reclosers and fault interrupters for rated maximum voltages above 1 000 V and up to 38 kV.<\/p>\n
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
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1<\/td>\n | IEEE Std C37.60-2012 Front Cover <\/td>\n<\/tr>\n | ||||||
4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
16<\/td>\n | 1 Overview 1.1 Scope 1.2 Normative references <\/td>\n<\/tr>\n | ||||||
17<\/td>\n | 2 Normal and special service conditions 2.101 General <\/td>\n<\/tr>\n | ||||||
18<\/td>\n | 2.102 Normal service conditions 2.102.1 Indoor switchgear and controlgear 2.102.2 Outdoor switchgear and controlgear <\/td>\n<\/tr>\n | ||||||
19<\/td>\n | 2.103 Special service conditions 2.103.1 General 2.103.2 Altitude 2.103.3 Pollution <\/td>\n<\/tr>\n | ||||||
20<\/td>\n | 2.103.4 Temperature and humidity 2.103.5 Vibrations, shock, or tilting 2.103.6 Wind speed 2.103.7 Other special (unusual) service conditions 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
21<\/td>\n | 3.1 General terms <\/td>\n<\/tr>\n | ||||||
23<\/td>\n | 3.2 Assemblies of switchgear and controlgear 3.3 Parts of assemblies 3.4 Switching devices 3.5 Parts of switchgear and controlgear 3.6 Operation Figures Figure 1 \u2013 Unit operation <\/td>\n<\/tr>\n | ||||||
24<\/td>\n | 3.7 Characteristic quantities <\/td>\n<\/tr>\n | ||||||
25<\/td>\n | 3.8 Index of definitions 4 Ratings <\/td>\n<\/tr>\n | ||||||
26<\/td>\n | 4.1 Rated voltage (Ur) Tables Table 1 \u2013 Ratings for automatic circuit recloser, cutout mountedreclosers and fault interrupters <\/td>\n<\/tr>\n | ||||||
27<\/td>\n | 4.2 Rated insulation level Table 2 \u2013 Preferred voltage ratings and related test requirements applied on overhead line distribution circuits a <\/td>\n<\/tr>\n | ||||||
28<\/td>\n | 4.3 Rated frequency (fr) 4.4 Rated normal current and temperature rise 4.4.1 Rated normal current (Ir) Table 3 \u2013 Preferred voltage ratings and related test requirements for reclosers\/FIs applied on cable connected distribution circuits a <\/td>\n<\/tr>\n | ||||||
29<\/td>\n | 4.4.2 Temperature rise <\/td>\n<\/tr>\n | ||||||
30<\/td>\n | Table 4 \u2013 Limits of temperature and temperature rise for variousparts and materials of reclosers\/Fis (1 of 2) <\/td>\n<\/tr>\n | ||||||
31<\/td>\n | 4.4.3 Particular points of Table 4 <\/td>\n<\/tr>\n | ||||||
32<\/td>\n | 4.5 Rated short-time withstand current (Ik) <\/td>\n<\/tr>\n | ||||||
33<\/td>\n | 4.6 Rated peak withstand current (Ip) 4.7 Rated duration of short-circuit (tk) 4.8 Rated supply voltage of closing and opening devices and of auxiliary and control circuits (Ua) 4.9 Rated supply frequency of closing and opening devices and of auxiliary circuits 4.10 Rated pressure of compressed gas supply for controlled pressure systems 4.11 Rated filling levels for insulation and\/or operation 4.101 Rated minimum tripping current (I>min) <\/td>\n<\/tr>\n | ||||||
34<\/td>\n | 4.102 Rated symmetrical interrupting current (short-circuit breaking current) 4.103 Transient recovery voltage related to rated symmetrical interrupting current 4.103.1 General 4.103.2 Representation of TRV waves <\/td>\n<\/tr>\n | ||||||
35<\/td>\n | 4.103.3 Representation of TRV <\/td>\n<\/tr>\n | ||||||
36<\/td>\n | 4.103.4 Standard values of TRV related to the rated short-circuit breaking current 4.103.4.1 General Figure 2 \u2013 Representation of the specified TRV as a two-parameter line and a delay line <\/td>\n<\/tr>\n | ||||||
37<\/td>\n | 4.103.4.2 First-pole-to-clear factor (kpp) Table 5 \u2013 Listing of tables describing TRV values under different rating conditions <\/td>\n<\/tr>\n | ||||||
38<\/td>\n | 4.103.4.3 Rate of rise of recovery voltage (RRRV) <\/td>\n<\/tr>\n | ||||||
39<\/td>\n | Table 6 \u2013 Standard values of prospective transient recovery voltage representation by two parameters for three-phase reclosers with rated symmetrical interrupting currents > 4 000 A in overhead line connected circuits <\/td>\n<\/tr>\n | ||||||
40<\/td>\n | Table 7 \u2013 Standard values of prospective transient recovery voltage representation by two parameters for single-phase reclosers with symmetrical interrupting currents > 4 000 A in overhead line connected circuit <\/td>\n<\/tr>\n | ||||||
41<\/td>\n | Table 8 \u2013 Standard values of prospective transient recovery voltage representation by two parameters for three-phase reclosers with symmetrical interrupting currents > 4 000 A in cable connected systems <\/td>\n<\/tr>\n | ||||||
42<\/td>\n | Table 9 \u2013 Standard values of prospective transient recovery voltage representation by two parameters for single-phase reclosers with symmetrical interrupting currents > 4 000 A in cable connected systems <\/td>\n<\/tr>\n | ||||||
43<\/td>\n | Table 10 \u2013 Standard values of prospective transient recovery voltage representation by two parameters for three-phase reclosers with symmetrical interrupting currents \u2264 4\u00a0000 A in both overhead and cable connected systems and three-phase fault interrupters of all interrupting ratings in cable connected systems <\/td>\n<\/tr>\n | ||||||
44<\/td>\n | Table 11 \u2013 Standard values of prospective transient recovery voltage representation by two parameters for single-phase reclosers with symmetrical interrupting currents \u2264 4\u00a0000 A in both overhead and cable connected systems and single-phase fault interrupters of all interrupting ratings in cable connected systems <\/td>\n<\/tr>\n | ||||||
45<\/td>\n | 4.104 Rated symmetrical making current (short-circuit making current) <\/td>\n<\/tr>\n | ||||||
46<\/td>\n | Table 12 \u2013 Performance characteristics \u2013 Standard operating duty <\/td>\n<\/tr>\n | ||||||
47<\/td>\n | 4.105 Rated operating sequence 4.106 Rated line and cable charging interrupting currents 5 Design and construction 5.1 Requirements for liquids in switchgear and controlgear 5.1.1 Liquid level Table 13 \u2013 Preferred line and cable charging interrupting current ratings <\/td>\n<\/tr>\n | ||||||
48<\/td>\n | 5.1.2 Liquid quality 5.1.3 Oil sampling provision (submersible reclosers\/FIs) 5.2 Requirements for gases in switchgear and controlgear 5.3 Earthing of switchgear and controlgear 5.4 Auxiliary and control equipment 5.5 Dependent power operation 5.6 Stored energy operation 5.7 Independent manual operation or power operation (independent unlatched operation) <\/td>\n<\/tr>\n | ||||||
49<\/td>\n | 5.8 Operation of releases 5.8.1 Shunt closing release 5.8.2 Shunt opening release 5.8.3 Capacitor operation of shunt releases 5.8.4 Under-voltage release 5.9 Low- and high- pressure interlocking devices and monitoring devices <\/td>\n<\/tr>\n | ||||||
50<\/td>\n | 5.10 Nameplates <\/td>\n<\/tr>\n | ||||||
51<\/td>\n | 5.11 Interlocking devices Table 14 \u2013 Nameplate markings <\/td>\n<\/tr>\n | ||||||
52<\/td>\n | 5.12 Position indication 5.13 Degrees of protection provided by enclosures 5.13.1 Protection of persons against access to hazardous parts and protection of the equipment against ingress of solid foreign objects (IP coding) 5.13.2 Protection against ingress of water (IP coding) 5.13.3 Protection of equipment against mechanical impact under normal service conditions (IK coding) 5.13.101 Enclosure design and coating system requirements 5.14 Creepage distances for outdoor insulators 5.15 Gas and vacuum tightness <\/td>\n<\/tr>\n | ||||||
53<\/td>\n | 5.15.1 Controlled pressure systems for gas 5.15.2 Closed pressure systems for gas 5.15.3 Sealed pressure systems 5.15.101 Design and withstand 5.15.102 Leak rate 5.16 Liquid tightness <\/td>\n<\/tr>\n | ||||||
54<\/td>\n | 5.17 Fire hazard (flammability) 5.18 Electromagnetic compatibility (EMC) 5.19 X-ray emission 5.101 Tank construction: submersible or dry vault reclosers\/FIs 5.101.1 Tank material and finish 5.101.2 Water entrapment 5.101.3 Tank support 5.101.4 Lifting lugs 5.102 Counters 5.103 Conductor terminal sizes <\/td>\n<\/tr>\n | ||||||
55<\/td>\n | 5.104 Stored mechanism charge indicator 6 Type tests 6.1 General 6.1.1 Grouping of tests <\/td>\n<\/tr>\n | ||||||
56<\/td>\n | 6.1.2 Information for identification of specimens 6.1.3 Information to be included in type-test reports Table 15 \u2013 Example of grouping <\/td>\n<\/tr>\n | ||||||
57<\/td>\n | 6.1.101 Test conditions <\/td>\n<\/tr>\n | ||||||
58<\/td>\n | 6.2 Dielectric tests 6.2.1 Ambient air conditions during tests 6.2.2 Wet test procedure 6.2.3 Conditions of switchgear and controlgear during dielectric tests <\/td>\n<\/tr>\n | ||||||
59<\/td>\n | 6.2.4 Criteria to pass the test 6.2.5 Application of the test voltage and test conditions 6.2.6 Tests of switchgear and controlgear of Ur \u2264 245 kV <\/td>\n<\/tr>\n | ||||||
60<\/td>\n | 6.2.7 Test of switchgear and controlgear of Ur > 245 kV 6.2.8 Artificial pollution tests for outdoor insulators 6.3 Radio intereference voltage (r.i.v.) test 6.4 Measurement of the resistance of circuits 6.4.1 Main circuit <\/td>\n<\/tr>\n | ||||||
61<\/td>\n | 6.4.2 Auxiliary circuits 6.5 Temperature-rise tests 6.5.1 Condition of the switchgear and controlgear to be tested 6.5.2 Arrangement of the equipment Table 16 \u2013 Size of bare copper leads a <\/td>\n<\/tr>\n | ||||||
62<\/td>\n | 6.5.3 Measurement of the temperature and the temperature rise 6.5.4 Ambient air temperature 6.5.5 Temperature-rise test of the auxiliary and control equipment Table 17 \u2013 Size of bare aluminum leads a <\/td>\n<\/tr>\n | ||||||
63<\/td>\n | 6.5.6 Interpretation of the temperature-rise tests 6.6 Short time withstand current and peak withstand current tests 6.7 Verification of the protection 6.8 Tightness tests 6.8.1 Controlled pressure systems for gas 6.8.2 Closed pressure systems for gas Table 18 \u2013 Permissible temporary leakage rates for gas systems <\/td>\n<\/tr>\n | ||||||
64<\/td>\n | 6.8.3 Sealed pressure systems 6.8.4 Liquid tightness tests 6.9 Electromagnetic compatibility tests (EMC) 6.10 Additional tests on auxiliary and control circuits 6.11 X-radiation test procedure for vacuum interrupters 6.101 Line charging current and cable charging current interruption tests 6.101.1 Applicability <\/td>\n<\/tr>\n | ||||||
65<\/td>\n | 6.101.2 General 6.101.3 Characteristics of supply circuits 6.101.4 Earthing (grounding) of the supply circuit <\/td>\n<\/tr>\n | ||||||
66<\/td>\n | 6.101.5 Characteristics of the capacitive circuit to be switched 6.101.6 Waveform of the current 6.101.7 Test voltage <\/td>\n<\/tr>\n | ||||||
67<\/td>\n | 6.101.8 Test current 6.101.9 Test-duties Table 19 \u2013 Switching test duties <\/td>\n<\/tr>\n | ||||||
68<\/td>\n | Figure 3a \u2013 Three phase circuit Figure 3b \u2013 Single-phase circuit Figure 3 \u2013 Test circuits for cable-charging or line-charging switching tests (see 6.101.5) <\/td>\n<\/tr>\n | ||||||
69<\/td>\n | 6.101.10 Criteria to pass the test 6.102 Making current capability 6.102.1 Test procedure 6.102.2 Criteria for passing making current tests 6.103 Rated symmetrical interrupting current tests 6.103.1 General <\/td>\n<\/tr>\n | ||||||
70<\/td>\n | Figure 4 \u2013 Three-phase short-circuit representation <\/td>\n<\/tr>\n | ||||||
71<\/td>\n | 6.103.2 Interrupting performance 6.103.3 Verification of rated symmetrical interrupting current <\/td>\n<\/tr>\n | ||||||
72<\/td>\n | 6.103.4 Standard operating duty test; automatic operation <\/td>\n<\/tr>\n | ||||||
73<\/td>\n | 6.103.5 Operating duty test; non-reclosing fault interrupters 6.103.6 Condition of recloser\/FI after operating duty test 6.104 Critical current tests 6.104.1 Applicability 6.104.2 Test current 6.104.3 Critical current test-duty <\/td>\n<\/tr>\n | ||||||
74<\/td>\n | 6.105 Minimum tripping current tests 6.105.1 Test circuit 6.105.2 Test procedures 6.106 Partial discharge (corona) tests 6.106.1 Test voltages and limits 6.106.2 Conditioning of test sample 6.106.3 Test equipment and procedure <\/td>\n<\/tr>\n | ||||||
75<\/td>\n | 6.106.4 Partial discharge test report 6.107 Surge current test; series-trip reclosers\/FIs 6.107.1 General 6.107.2 Test conditions 6.107.3 Test procedure <\/td>\n<\/tr>\n | ||||||
76<\/td>\n | 6.107.4 Condition after test 6.108 Time-current tests 6.108.1 Test conditions 6.108.2 Test procedure 6.108.3 Presentation of data standard time-current curves <\/td>\n<\/tr>\n | ||||||
77<\/td>\n | 6.109 Mechanical duty test 6.109.1 General 6.109.2 Mechanical duty test 6.109.3 Condition of recloser\/FI following mechanical operation test <\/td>\n<\/tr>\n | ||||||
78<\/td>\n | 6.110 Ice loading test 6.110.1 General 6.110.2 Applicability 6.110.3 Ice formations 6.110.4 Test program <\/td>\n<\/tr>\n | ||||||
80<\/td>\n | 6.110.5 Acceptance criteria <\/td>\n<\/tr>\n | ||||||
81<\/td>\n | 6.111 Control electronic elements surge withstand capability (SWC) tests 6.111.1 General 6.111.2 Oscillatory and fast transient surge tests 6.111.3 Simulated surge arrester operation test Table 20 \u2013 Characteristics for electrical disturbance tests <\/td>\n<\/tr>\n | ||||||
83<\/td>\n | 6.112 Condition of recloser\/FI after each test of 6.101, 6.103 and 6.104 6.112.1 General requirements Figure 5 \u2013 Surge test circuit <\/td>\n<\/tr>\n | ||||||
84<\/td>\n | 6.112.2 Specific requirement for vacuum interrupters in SF6 insulated equipment 7 Routine tests <\/td>\n<\/tr>\n | ||||||
85<\/td>\n | 7.1 Dielectric test on the main circuit 7.2 Tests on auxiliary and control circuits 7.3 Measurement of the resistance of the main circuit 7.4 Tightness test 7.4.1 Sealed pressure systems 7.4.2 Liquid tightness tests <\/td>\n<\/tr>\n | ||||||
86<\/td>\n | 7.101 Reclosing and overcurrent trip calibration 7.102 Partial discharge test 7.103 Mechanical operations tests 8 Guide to the selection of switchgear and controlgear <\/td>\n<\/tr>\n | ||||||
87<\/td>\n | 9 Information to be given with enquiries, tenders and orders 10 Transport, storage, installation, operation and maintenance 11 Safety 12 Influence of the product on the environment 101 Additional application and test information 101.1 Field tests on units in-service, including d.c. withstand tests on cables <\/td>\n<\/tr>\n | ||||||
88<\/td>\n | 101.2 Internal arc classification <\/td>\n<\/tr>\n | ||||||
89<\/td>\n | Annex A (informative) X\/R Ratios A.1 General A.2 Time constant \u03c4 and X\/R ratio A.3 Asymmetrical fault current <\/td>\n<\/tr>\n | ||||||
90<\/td>\n | Table A.1 \u2013 X\/R ratios: peak factors and r.m.s. factors <\/td>\n<\/tr>\n | ||||||
91<\/td>\n | Annex B (informative) Simulated surge arrester operation test B.1 General B.2 Simulated surge arrester operation testing <\/td>\n<\/tr>\n | ||||||
93<\/td>\n | Figure B.1 \u2013 Surge test circuit <\/td>\n<\/tr>\n | ||||||
94<\/td>\n | Figure B.2 \u2013 Typical surge voltage and current waves <\/td>\n<\/tr>\n | ||||||
95<\/td>\n | Annex C (normative) Method of drawing the envelope of the prospective transient recovery voltage of a circuit and determining the representative parameters C.1 General C.2 Drawing the envelope C.3 Determination of parameters <\/td>\n<\/tr>\n | ||||||
96<\/td>\n | Figure C.1 \u2013 Representation by two parameters of a prospective transient recovery voltage of a test circuit <\/td>\n<\/tr>\n | ||||||
97<\/td>\n | Annex D (informative) Background basis of recloser TRV values D.1 General D.2 Two parameter TRV <\/td>\n<\/tr>\n | ||||||
98<\/td>\n | Figure D.1 \u2013 A TRV waveform as a 1-cosine function of time Figure D.2 \u2013 Representation of the specified TRV as a two-parameter line and a delay line <\/td>\n<\/tr>\n | ||||||
99<\/td>\n | D.3 uc (TRV peak) Figure D.3 \u2013 Representation of the specified TRV as a two-parameter line and a delay line compared to a 1-cosine TRV waveform <\/td>\n<\/tr>\n | ||||||
100<\/td>\n | D.4 Rate of rise of recovery voltage (RRRV) D.5 t3 (time to reach uc at the specified RRRV) D.6 Multipliers for TRV values at currents less than the rated short-circuit current Table D.1 \u2013 TRV peak multiplier <\/td>\n<\/tr>\n | ||||||
101<\/td>\n | Table D.2 \u2013 TRV multipliers for line-connected reclosers\/FI Table D.3 \u2013 TRV multipliers for cable-connected reclosers\/FI <\/td>\n<\/tr>\n | ||||||
102<\/td>\n | Annex E (normative) Tolerances for test values E.1 General E.2 Type test tolerances <\/td>\n<\/tr>\n | ||||||
103<\/td>\n | Table E.1 \u2013 Tolerances on test quantities for type tests <\/td>\n<\/tr>\n | ||||||
105<\/td>\n | Annex F (informative) Definition for the automatic circuit recloser F.1 Definition of a recloser F.2 Background F.3 Recloser classifications <\/td>\n<\/tr>\n | ||||||
106<\/td>\n | F.4 Recloser operating characteristics <\/td>\n<\/tr>\n | ||||||
107<\/td>\n | Annex G (informative) Definition for the fault interrupter G.1 Definition of a fault interrupter G.2 Background G.3 Fault interrupter application <\/td>\n<\/tr>\n | ||||||
108<\/td>\n | Annex H (informative) Basis of derivation of duty factors and standard operating duties H.1 General H.2 Standard operating duty Table H.1 \u2013 Apportionment of operating duty <\/td>\n<\/tr>\n | ||||||
109<\/td>\n | Table H.2 \u2013 Example of apportionment of operating duty factor Table H.3 \u2013 Example \u2013 Operating duty per interruption Table H.4 \u2013 Example \u2013 Unit operations at test current levels Table H.5 \u2013 Example \u2013 Duty Factor <\/td>\n<\/tr>\n | ||||||
110<\/td>\n | Figure H.1 \u2013 Recloser duty factors <\/td>\n<\/tr>\n | ||||||
111<\/td>\n | Annex I (normative) Ratings for oil interrupting reclosers and hydraulically controlled reclosers I.1 General I.2 Rating structure for hydraulically controlled series-trip and oil interrupting reclosers I.2.1 General I.2.2 Rated maximum voltage I.2.3 Rated continuous (normal) current (Ir) <\/td>\n<\/tr>\n | ||||||
112<\/td>\n | I.2.4 Rated minimum tripping current for hydraulically controlled series-trip reclosers I.2.5 Rated symmetrical interrupting current for hydraulically controlled series-trip reclosers and oil interrupting reclosers I.2.6 Rated symmetrical making current I.2.7 Rated operating sequence Table I.1 \u2013 Preferred continuous (normal) current ratings for hydraulically controlled series-trip and oil interrupting reclosers <\/td>\n<\/tr>\n | ||||||
113<\/td>\n | I.3 Special test considerations for hydraulically controlled series-trip reclosers \u2013 Measurement of resistance of main circuit <\/td>\n<\/tr>\n | ||||||
114<\/td>\n | Table I.2 \u2013 Preferred values for symmetrical interrupting current ratings of hydraulically controlled series-trip reclosers <\/td>\n<\/tr>\n | ||||||
115<\/td>\n | Table I.3 \u2013 Preferred values for symmetrical rated interrupting current, and performance characteristics of single-phase oil interrupting reclosers <\/td>\n<\/tr>\n | ||||||
116<\/td>\n | Table I.4 \u2013 Preferred values for rated symmetrical interrupting current, and performance characteristics of three-phase oil interrupting reclosers <\/td>\n<\/tr>\n | ||||||
117<\/td>\n | Annex J (normative) Standard methods for determining the values of a sinusoidal current wave and a power-frequency recovery voltage J.1 General J.2 Currents J.2.1 Significance of r.m.s. values used in the standards on a.c. high-voltage reclosers\/FIs J.2.2 Classification of current wave J.2.3 R.m.s. value of a symmetrical sinusoidal wave at a particular instant <\/td>\n<\/tr>\n | ||||||
118<\/td>\n | J.2.4 R.m.s. value of an asymmetrical sinusoidal wave at a particular instant Figure J.1 \u2013 Measurement of the r.m.s. value of a symmetrical wave <\/td>\n<\/tr>\n | ||||||
119<\/td>\n | J.2.5 Alternate methods of stating the making current Figure J.2 \u2013 Measurement of the r.m.s. value of an asymmetrical wave <\/td>\n<\/tr>\n | ||||||
120<\/td>\n | J.2.6 Measurement of the r.m.s. value of a current during a short circuit of several cycles duration Table J.1 \u2013 Asymmetrical currents tabulated values <\/td>\n<\/tr>\n | ||||||
121<\/td>\n | Figure J.3 \u2013 Determination of the equivalent r.m.s. value of a short-time current <\/td>\n<\/tr>\n | ||||||
122<\/td>\n | J.3 Power-frequency recovery voltage Figure J.4 \u2013 Determination of the power-frequency pole unit recovery voltage <\/td>\n<\/tr>\n | ||||||
123<\/td>\n | Annex K (normative) Altitude correction factors K.1 General K.2 Altitude correction factors Figure K.1 \u2013 Altitude correction factors <\/td>\n<\/tr>\n | ||||||
125<\/td>\n | Annex L (informative) Comparison of definitions related to the unit operation L.1 General L.2 Broader reclose operation <\/td>\n<\/tr>\n | ||||||
126<\/td>\n | Table L.1 \u2013 Comparison of terms <\/td>\n<\/tr>\n | ||||||
127<\/td>\n | Figure L.1 \u2013 Illustration of auto-reclose operation <\/td>\n<\/tr>\n | ||||||
128<\/td>\n | Annex M (informative) Corrosion protection M.1 General M.2 Reference documents M.3 Other considerations <\/td>\n<\/tr>\n | ||||||
129<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" IEEE\/IEC International Standard – High-voltage switchgear and controlgear – Part 111: Automatic circuit reclosers and fault interrupters for alternating current systems up to 38 kV (Superseded Redline)<\/b><\/p>\n |