IEC/TS 61851-3-2 Ed. 1.0 en:2023 PDF

This part of IEC 61851, which is a Technical Specification, applies to the portable and mobile DRI EV supply equipment where the protection against electric shocks relies on double or reinforced insulation, and with double or reinforced insulation between all AC and DC inputs and outputs with a rated input voltage being not more than 250 V AC and output voltages not more than 120 V DC.

NOTE 1 In the following countries, the acceptable nominal supply voltage is up to 600 V AC: CA, US.

NOTE 2 These specified rated input and output voltages supersede all references.

This document applies to
• VCUs intended to be a part of portable and mobile DRI EV supply equipment,
• portable and mobile DRI EV supply equipment according to the IEC 61851-3 series intended to be installed and/or used at an altitude of up to 2 000 m, and
• portable and mobile DRI EV supply equipment for the conductive transfer of electric power between the supply network and an electric road vehicle/RESS according to the IEC 61851-3 series intended to be connected to vehicles where the vehicle power supply circuit is protected against electric shock by double or reinforced insulation.

NOTE 3 For information regarding protection against electric shock by double or reinforced insulation of the EV or of the vehicle power supply circuit, see ISO 18246:2023, 6.1.1 b) and Table 3.

The aspects covered in this document include
• the characteristics and operating conditions of the portable and mobile DRI EV supply equipment,
• the specification for required level of electrical safety for the portable and mobile DRI EV supply equipment,
• requirements for bidirectional power transfer from DC to DC, and
• requirements for command and control basic communication for safety and process matters, if required.

This document does not apply to
• safety aspects related to maintenance, and
• electrical devices and components, which are covered by their specific product standards.