JIS C 4620:2018

Table of Contents

1 Scope
2 Normative references
3 Definitions
4 Service conditions
4.1 Standard service conditions
4.2 Special service conditions
5 Classification
6 Performances
6.1 Coordination of operation
6.2 Breaking performance
6.3 Operation
6.4 Temperature rise
6.4 Dielectric withstand voltages
6.6 Waterproof
7 Construction
7.1 Construction in general
7.2 Enclosure or the like
7.3 Configuration and mounting of equipments to be accommodated
7.4 Wiring and connection of equipments
7.5 Ventilation
8 Shapes and dimensions
8.1 Shapes
8.2 Dimensions
9 Equipments and materials
10 Tests
10.1 Classification of tests
10.2 Test items
10.3 Test methods
11 Designation of products
12 Marking
Annex 1 (normative) Current transformers
Annex 1A (informative) Method for obtaining rated instrument
limit primary current
Annex 2 (normative) High-voltage cutout
Annex 3 (normative) Wire supports
Annex 4 (normative) Waterproof test of cubicle type high
voltage power receiving units
Annex 5 (normative) Temperature rise test of cubicle type
high voltage power receiving units
Annex 6 (informative) Example of external dimensions of cubicle

Abstract

Specifies cubicle type high voltage receiving units not exceeding 4000 kVA in receiving capacity, intended for use in circuits at nominal voltage 6.6 kV, at a frequency of 50 Hz or 60 Hz with a system short circuit current not exceeding 12.5 kA by a consumer to receive electrical power from electrical utilities.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Japanese Standards Association
Pages
ISBN
Supersedes	JIS C 4620:2004