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Field Testing & Twin SaaS
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#13EV Charger (EVSE) Station Inspection

Project Framework (report reference): IEC 60364-4-41Applicable Standard: IEC 61851 / BS 7671
Module Field Guides, Standard Selection & Tutorials (3)Browse All 93+ Guides →
1 · Field Measurement ProcedureHow to Measure & Test EV Charger (EVSE) on Site: Step-by-Step Field Procedure (IEC 61851 / BS 7671)2 · Standards & Limit TablesWhich Standard Applies to EV Charger (EVSE)? Acceptance Limits, Annex Tables & Regional Equivalents (IEC 61851 / BS 7671)3 · OhmCert Tutorial & Case StudyHow to Complete a EV Charger (EVSE) Certificate in OhmCert: Worked Case Study & Troubleshooting

Multi-Asset / Multi-Point Equipment Schedule

Inspect multiple transformers, panels, rooms, motors, or RCDs in this module without overwriting previous assets. Each item receives a permanent QR Sticker UID preserved across annual audits.

Sticker UID: OC-EVSE-7B6C
Plant & SLD (Auto-SLD)

Standard Limits, Equations & Space Presets

IEC 61851-1 and BS 7671 Section 722 EV Charging requirements: loop impedance Zs, Type A + 6 mA DC RDC-DD (IEC 62955) vs Type B RCD trip windows, and TT earth resistance.

One-Click Normative Presets (Auto-fills Target Limits)

Measured Inputs

Uo is synced from project settings (230 V).

Calculated / Evaluated Results

Zs is validated with the same parametric engine as the loop impedance module: Zs_limit = (0.95 x Uo) / Im, then Zs_max_site = 0.8 x Zs_limit for conductor temperature. RCD, DC fault detection and insulation limits follow BS 7671 Section 722 and IEC 61851-1.

  • Design Charging Current Ib (from Power & Uo)

    -

    Calculated continuous EVSE load current Ib per IEC 61851-1 / BS 7671 Section 722.

    Pending

  • Calculated Base Limit & Prospective Fault Current

    - Ohm

    Zs_limit = (0.95 x Uo) / Im; Prospective Earth Fault Current Ipf = (0.95 x Uo) / Zs.

    Pending

  • Max Allowable On-Site Limit (0.8x Temp Corrected)

    - Ohm

    Not tested - enter the measured value. Acceptance: Zs_max_site = 0.8 x Zs_limit; the measured 0.000 Ohm must be at or below this value [BS 7671 §722.411 / IEC 60364-4-41]

    Pending

  • RCD Trip Time at 1x IΔn

    - ms

    Not tested - enter the measured value. Acceptance: <= 300 ms at rated residual current [BS 7671 §643.7 / BS EN 61008]

    Pending

  • RCD Trip Time at 5x IΔn

    - ms

    Not tested - enter the measured value. Acceptance: <= 40 ms where a 30 mA RCD provides additional protection [BS 7671 §415.1 / Table 3A]

    Pending

  • 6 mA DC Fault Detection (RDC-DD)

    - mA

    Not tested - enter the measured value. Acceptance: 3.0 mA <= I_dc <= 6.0 mA smooth DC trip window (Type B RCD or Type A + IEC 62955 RDC-DD) [IEC 62955 Table 1 / BS 7671 §722.531.3.101]

    Pending

  • Insulation Resistance

    - MOhm

    Not tested - enter the measured value. Acceptance: >= 1 MOhm at 500 V DC on a 230 / 400 V circuit [BS 7671 Table 64]

    Pending

  • Earth Electrode Resistance

    - Ohm

    Not tested - enter the measured value. Acceptance: TT supply: Ra x Ia <= 50 V, with 200 Ohm as the practical stability limit [BS 7671 §411.5.3]

    Pending

Verification Checklist (0 / 16)

Pending

  • 1EVSE charging mode (Mode 3 AC / Mode 4 DC), connector type (Type 2 / CCS2), and rated kW nameplate documented [IEC 61851-1]

  • 2Dedicated final circuit installed with zero diversity factor (1.0 continuous load factor) per BS 7671 §722.311

  • 3Individual 30 mA RCD protection verified per charging point: Type B RCD or Type A + 6 mA RDC-DD [BS 7671 §722.531.3.101 / IEC 62955]

  • 4PME / TN-C-S open-PEN fault protection device (< 70 V / > 253 V disconnection within 5 s) or TT earth separation verified [BS 7671 §722.411.4.1]

  • 5Earth fault loop impedance Zs verified <= 0.8 x Zs_limit (or TT electrode Ra x I_delta_n <= 50 V)

  • 6RCD trip times verified with EVSE test adapter at 1x I_delta_n (<= 300 ms), 5x I_delta_n (<= 40 ms), and 6 mA smooth DC injection

  • 7Circuit insulation resistance verified >= 1.0 MOhm at 500 V DC prior to energising charger electronics

  • 8Protective Earth continuity verified from distribution board to EVSE chassis and Type 2 CP/PE socket pin

  • 9Control Pilot (CP) PWM states (State A 12V standby, State B +9V vehicle detected, State C +6V charging, State E 0V error) verified with EV simulator

  • 10Proximity Pilot (PP) cable current coding resistor detection and mechanical plug lock engagement proven

  • 11PE open-circuit fault simulation on EV tester immediately terminates charging output within <= 100 ms [IEC 61851-1]

  • 12Type 2 Surge Protective Device (SPD) installed upstream and status window healthy

  • 13Enclosure ingress and impact ratings (>= IP54 / IP65 and >= IK08 / IK10 for outdoor public spaces) intact

  • 14Physical vehicle impact protection (crash bollards / wheel stops) installed in parking bays [BS 7671 §722.512.2]

  • 15Dynamic Load Management (DLM) CT clamp and OCPP back-office communication telemetry operational

  • 16Emergency stop pushbutton, upstream lockable isolator, and user safety signage verified

General Notes

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Free plan: 5 of 5 inspections / calculations left this month.