Testing Methodology for AC and DC EV Charging Stations
Explore the comprehensive testing procedures for AC and DC Electric Vehicle Supply Equipment (EVSE) to ensure accurate measurement of energy delivered and cost charged. Includes details on testing at various current levels and voltage points, along with performance verification in the field.
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Presentation Transcript
HB44 Section 3.4 N.5 N.5. N.5.1. Testing of an AC EVSE compares the total energy delivered in a transaction and the total cost charged as displayed/reported by the EVSE with that measured by the measurement standard. Each test shall be performed for at least the minimum measured quantity (MMQ). Accuracy tests shall be performed at the following current levels: (i) A point between 4 A and 10 A; and (ii) A point between 40 % and 60 % of the maximum deliverable amperes; and (iii) A point between 70 % and 100 % of the maximum deliverable amperes. Test of an EVSE System. The testing methodology
HB44 Section 3.4 N.5 N.5.2. total energy delivered in a transaction and the total cost charged as displayed/reported by the EVSE with that measured by the measurement standard. Each test shall be performed for at least the minimum measured quantity (MMQ). N.5.2.1. Type Evaluation Testing of a DC EVSE Tests shall be performed at two voltage points one between 350 VDC and 450 VDC and if supported by the EVSE a second at between 700 VDC and 900 VDC: Accuracy tests shall be performed at the following current levels: (i) A point between 10% and 20% of the maximum deliverable amperes but not less than 30 amperes; (ii) A point between 40 % and 60% of the maximum deliverable amperes; and (iii) A point between 70 % and 100 % of the maximum deliverable amperes. Testing of an DC EVSE The testing methodology compares the
HB44 Section 3.4 N.5 N.5.2.2.Performance Verification in the Field of a DC EVSE Accuracy tests shall be performed at the following current levels: (i) A point between 10% and 20% of the maximum deliverable amperes but not less than 30 amperes; (ii) A point between 25 % and 100 % of the maximum deliverable amperes with the recommendation to test at the maximum power level within that range that is possible using the test equipment available. Note: The test points (i) and (ii) above must not be at the same current level. It is recommended that the current levels should be separated to the extent that the test equipment will allow. Note: For DC systems it is anticipated that an electric vehicle may be used as the test load. That is permissible provided that the requirements of N.5.2.2 are met.
HB44 Section 3.4 N.5 AC Type Test and Field DC Type Test DC Field 4 A to 10A (3) 10% to 20% (30 A min) 10% to 20% (30 A min) 40% Imax to 60% Imax 40% Imax to 60% Imax 70% Imax to 100% Imax 70% Imax to 100% Imax 25% Imax to 100% Imax (1,2) Note 1: Testing recommended to be done at the highest level possible with the field test equipment. Note 2: A vehicle may be used for this test provided that the current is 100A. Note 3: IEC 61851 sets a lower limit for AC chargers of 6 A.
HB44 Section 3.4 N.5 OIML G22 (2022) Mandatory test points: AC EVSE: Tests shall be conducted at unity power factor at Imin, Itr , 50 % Imax and Imax for a delivered energy of at least the minimum measured quantity at each Unom. If an EVSE is rated for multiple frequencies it shall be tested at all nominal frequencies. DC EVSE: Tests shall be conducted at Imin , Itr , 50 % Imax and Imax for a delivered energy of at least the minimum measured quantity at Umin, Umax, and the midpoint between. The total quantity of energy delivered shall be sufficient such that at least 90 % of the energy delivered is delivered at intended level.
HB44 Section 3.4 N.5 30A@400V
HB44 Section 3.4 N.5 30A@400V
