IEC 61851-22:2001 pdf free download

IEC 61851-22:2001 pdf free download
IEC 61851-22:2001 pdf free download.Electric vehicle conductive charging system
9.2 Earthing electrode and continuity
The tests for a class I charging station earth electrode, where applicable, and earthing of the a.c. electric vehicle charging station shall be carried out in accordance with the national rules and safety requirements for earthing.
All exposed conductive parts of the a.c. electric vehicle charging station which could be connected to the supply voltage source, under fault conditions, shall be connected together in such a manner that they conduct electricity properly, so as to conduct potential fault currents to the earthed point of the a.c. supply network (mains).
Compliance is checked by testing the electrical continuity between exposed conductive parts and the earth circuit.
A current of 1 6 A, derived from a d.c. source having a no-load voltage not exceeding 1 2 V, is passed between any exposed conductive part and the earthing terminal of the charging station.For each exposed conductive part, the voltage drop is measured between these two points.
The resistance calculated from the current and measured voltage drop, between any exposed conductive part and the earth-circuit connection, shall not exceed 0,1 Ω.
For a class II charging station, there shall be a lead-through protective conductor.
9.3 Detection of the electrical continuity of the protective conductor
For mode 3 charging, the a.c. electric vehicle charging station shall monitor the electrical continuity of the protective conductor to the electric vehicle. If the a.c. electric vehicle charging station detects a loss of electrical continuity of the protective conductor, the electrical supply circuit to the vehicle shall be opened.
1 0.2 Touch current
The touch current shall be measured after the damp heat test (see 1 1 .1 .4), with the a.c.electric vehicle charging station connected to a.c. supply network (mains) in accordance with 5.1 of IEC 60950. The supply voltage shall be 1 ,1 times the nominal rated voltage.
The touch current between any a.c. supply network poles and the accessible metal parts connected with each other and with a metal foil covering insulated external parts, measured in accordance with IEC 60950, shall not exceed the values indicated in table 2.