29.080.01 – Electrical insulation in general – PDF Standards Store

JIS C 4003:2010

Wed, 06 Nov 2024 02:00:53 +0000

This Standard distinguishes between the thermal class for electrical insulation system (EIS) and the thermal class for electrical insulating material (ElM), and establishes the procedures for designating the criteria for the thermal evaluation and also the thermal class for both the electrical insulating material and the electrical insulation system.

This Standard is applicable to the cases where the thermal factor is the dominant ageing factor.

NOTE 1 A thermal class of a certain electrical insulation system cannot be assigned to the electrical insulating material which is used therein solely because of its use in the electrical insulation system.

NOTE 2 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

IEC 60085 : 2007 Electrical insulation – Thermal evaluation and designation (MOD)

The symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.

JIS C 1302:2018

Wed, 06 Nov 2024 01:58:11 +0000

This Standard specifies portable insulation resistance testers of built-in battery type, having a rated output voltage not exceeding 1000 V, which are used for the measurements of the following a) to e).

a) Insulation measurement of low voltage distribution path The insulation measurement of paths and devices which are powered off in a distribution system up to 1 000 V a.c. and 1 500 V d.c.

b) Insulation measurement of device, appliance, component, etc.

NOTE: The photovoltaic array not in power generating state corresponds to an appliance or a component.

c) Insulation measurement of high-voltage equipment

d) Insulation measurement of photovoltaic array in power generating state by short-circuiting P-N terminals

e) Insulation measurement of photovoltaic array in power generating state without short-circuiting P-N terminals

NOTE: The International Standards corresponding to this Standard and the symbol of degree of correspondence are as follows.

IEC 61557-1: 2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c.-Equipment for testing, measuring or monitoring of protective measures-Part 1: General requirements

IEC 61557-2: 2007 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c.-Equipment for testing, measuring or monitoring of protective measures-Part 2: Insulation resistance (overall evaluation: MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.

JIS C 1302:2014

Wed, 06 Nov 2024 01:58:10 +0000

This Standard specifies the portable insulation resistance testers with a rated measuring voltage not exceeding 1000 V incorporating batteries therein to be used for the following a) to c) as the target of measurement

a) Insulation measurement of low voltage distribution line which is the insulation measurement of lines and devices in a distribution system not exceeding a.c. 1 000 V and d.c. 1 500 V where the power supply is interrupted

b) Insulation measurement of device, appliance, components, etc.

c) Insulation measurement of high-voltage equipment

NOTE: The International Standards corresponding to this Standard and the symbol of degree of correspondence are as follows:

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standards and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/ IEC Guide 21-1.

IEC TS 61936-2:2015

Tue, 05 Nov 2024 20:10:28 +0000

Power installations exceeding 1 kV a.c. and 1,5 kV d.c. - Part 2: d.c.

Published By	Publication Date	Number of Pages
IEC	2015-03-05	42

IEC 61936-1:2021

Tue, 05 Nov 2024 19:35:20 +0000

IEC 61936-1:2021 provides requirements for the design and the erection of electrical power installations in systems with nominal voltages exceeding 1 kV AC and nominal frequency up to and including 60 Hz, so as to provide safety and proper functioning for the use intended.
This document does not apply to the design and erection of any of the following:
– overhead and underground lines between separate electrical power installations;
– electrified railway tracks and rolling stock;
– mining equipment and installations;
– fluorescent lamp installations;
– installations on ships according to IEC 60092 (all parts) and offshore units according to IEC 61892 (all parts), which are used in the offshore petroleum industry for drilling, processing and storage purposes;
– electrostatic equipment (e.g. electrostatic precipitators, spray-painting units);
– test sites;
– medical equipment, e.g. medical X-ray equipment.
This document does not apply to the design of prefabricated, type-tested switchgear and high voltage/low voltage prefabricated substation, for which separate IEC standards exist.

This edition includes the following significant technical changes with respect to the previous edition:

introduction has been rewritten to reflect the status when this document is produced;
the scope has been improved to clarify the application of this document;
missing and obsolete terms and definitions have been updated including improvement of existing terms;
Table 1 has been updated where agreements between supplier and user are needed;
requirements of electromagnetic compatibility have been clarified;
insulation coordination clause (Clause 5) has improved wording for better clarity and the technical content has an updated coordination to the latest versions of the insulation coordination standards;
wording regarding electrical equipment has been improved and made clearer;
subclause for fuses has been improved and reworded;
requirements have been added for labelling when multiple sources are required to be disconnected;
missing requirements for GIS have been reintroduced;
subclause regarding ventilation (HVAC) has been improved;
figures in Clause 7 have been updated and moved to the corresponding subclause;
requirements for transformer installations have been improved including adjustment of editorial typing-errors;
clause on protection, automation and auxiliary systems has been restructured and improved;
protection against lightning strokes has been extended;
clarification of content due to the distinction between erection (and providing electrical safety for the intended use of the electrical power installation) and subsequent activities such as maintenance and repair with safe working procedures;
where no provincial, national or regional regulations are available for safe working procedures, an informative guideline is provided in Annex F. This replaces the former parts of Figure 3 in Clause 7.

IEC 61936-1:2010

Tue, 05 Nov 2024 19:35:19 +0000

Installations électriques en courant alternatif de puissance supérieure à 1 kV – Partie 1: Règles communes

Published By	Publication Date	Number of Pages
IEC	2010-08-31	214

IEC 61557-8:2014

Tue, 05 Nov 2024 19:27:57 +0000

IEC 61557-8:2014 specifies the requirements for insulation monitoring devices (IMD) which permanently monitor the insulation resistance RF to earth of unearthed a.c. IT systems, of a.c. IT systems with galvanically connected d.c. circuits having nominal voltages up to 1 000 V a.c., as well as of unearthed d.c. IT systems with voltages up to 1 500 V d.c. independent from the method of measuring. IT systems are described in IEC 60364-4-41 amongst other literature. Additional data for the selection of devices in other standards should be noted. IMDs according to this part of IEC 61557 can also be used for de-energized TT, TN and IT systems or appliances. This third edition cancels and replaces the second edition published in 2007. This edition constitutes a technical revision which includes the following significant technical changes with respect to the previous edition:
– terms and definitions have been complemented;
– abbreviations are listed and explained;
– requirements have been revised;
– mandatory and optional functions and their terminology have been adapted from IEC 61557-15;
– mechanical requirements have been added;
– information on operating instructions has been added;
– type tests and routine tests have been complemented;
– an Annex C: 'Insulation monitoring devices for photovoltaic systems (PV-IMD)' has been added; and
– an Annex D: 'Insulation monitoring function of a photovoltaic inverter (PV-IMF) or in a charge controller' has been added.

This publication is to be read in conjunction with IEC 61557-1:2007. The contents of the corrigendum of May 2016 have been included in this copy.

IEC 61557-8:2007

Tue, 05 Nov 2024 19:27:56 +0000

This part of IEC 61557 specifies the requirements for insulation monitoring devices (IMD) which permanently monitor the insulation resistance to earth of unearthed IT a.c. systems, for IT a.c. systems with galvanically connected d.c. circuits having nominal voltages up to 1 000 V a.c., as well as of unearthed IT d.c. systems with voltages up to 1 500 V d.c. independent from the method of measuring.

This second edition cancels and replaces the first edition published in 1997. This edition constitutes a technical revision.

The following changes were made with respect to the previous edition:

a) definitions complemented;

b) revision of some requirements;

c) addition of information on operating instructions;

d) sections "type tests" and "routine tests" complemented;

e) modification of Table 1;

f) addition of Annexes A and B.

The contents of the corrigendum of May 2007 have been included in this copy.

IEC 61557-7:2019

Tue, 05 Nov 2024 19:27:54 +0000

IEC 61557-7:2019 specifies the requirements applicable to measuring equipment for testing the phase sequence in three-phase distribution systems. Indication of the phase sequence can be mechanical, visual and/or audible. This document does not apply to additional measurements for other quantities. It does not apply to monitoring relays. IEC 61557-7:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following changes with respect to the previous edition:
a) alignment of the structure with that of the whole IEC 61557 series;
b) updated requirements in 4.3 in accordance with new editions of IEC 61010-1 and IEC 61010-031;
c) the information on markings was extended;
d) the information on the operating instructions was extended;
e) complement to the information on the testing of leads;
f) test leads for insulated conductors were introduced;
g) Annex B was added with information on phase sequence tests and indications.

IEC 61557-6:2007

Tue, 05 Nov 2024 19:27:54 +0000

Sécurité électrique dans les réseaux de distribution basse tension de 1000 V c.a. et 1500 V c.c. – Dispositifs de contrôle, de mesure ou de surveillance de mesures de protection – Partie 6: Efficacité des dispositifs à courant résiduel (DCR) dans les réseaux TT, TN et IT

Published By	Publication Date	Number of Pages
IEC	2007-07-16	28