GB/T 18487.5-2024: Electric vehicle conductive charging system - Part 5: DC charging system for GB/T 20234.3

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Scope

This document specifies the general requirements, control guidance circuit, charging control
process and charging connection control sequence of electric vehicle DC charging systems used
for the DC charging couplers in GB/T 20234.3, as well as other requirements for the charging
system, such as. insulation monitoring device, additional protective measures and power outage
protection, etc.
This document is applicable to the DC charging system composed of electric vehicles (which
may be referred to as “vehicles”) and off-board conductive chargers (which may be referred to
as “off-board chargers” or “chargers”) whose digital communication protocols comply with
GB/T 27930.2.
This document is applicable to off-board conductive chargers using an isolated system, the rated
voltage on the power supply grid side does not exceed AC 1,000 V or DC 1,500 V, and the
maximum operating voltage on the vehicle side does not exceed DC 1,500 V.
NOTE 1.the recommended DC operating voltage range at the vehicle coupler for off-board
conductive chargers in non-restricted places is 200 V ~ 1,000 V.
This document is applicable to DC charging system whose charging power supply circuit is
Class B voltage. The DC charging system whose charging power supply circuit is Class A
voltage may take it as a reference.
NOTE 2.for the definition of voltage class, see GB 18384.
NOTE 3.when the DC charging system specified in this document is used in other fields, such as.
electric industrial vehicles and electric construction machinery, etc., the charging system
usually requires additional requirements, for example, re-evaluating important features
of the charging system, such as. short-circuit protection, Y capacitance, insulation
resistance and insulation monitoring device, etc.

Basic Data

Standard ID	GB/T 18487.5-2024 (GB/T18487.5-2024)
Description (Translated English)	Electric vehicle conductive charging system - Part 5: DC charging system for GB/T 20234.3
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	T35
Classification of International Standard	43.120
Word Count Estimation	53,583
Date of Issue	2024-12-31
Date of Implementation	2024-12-31
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration