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OhmCert2026
Field Testing & Twin SaaS
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#27RCD / Residual Current Device Trip Time & Ramp Test Report

Project Framework (report reference): IEC 60364-4-41Applicable Standard: IEC 60364-6 / EN 61008-1 / EN 61009-1

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-RCD0-A3A3

Standard Limits, Equations & Space Presets

IEC 60364-6 §6.4.3.7, EN 61008-1 (RCCB), and EN 61009-1 (RCBO) verify residual current devices across 0.5x non-trip hold, 1x IΔn (0° & 180°), 5x IΔn fast disconnection (<= 40 ms for 30 mA additional protection), sinusoidal ramp trip threshold (0.5-1.0 x IΔn), and contact voltage Uc <= 50 V.

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

Measured Inputs

Calculated / Evaluated Results

Evaluates Residual Current Devices (RCCB / RCBO / CBR) across 0.5x non-trip hold, 1x IΔn (0 deg / 180 deg), 5x IΔn fast disconnection, sinusoidal ramp threshold I_Δtrip, and contact voltage Uc per IEC 60364-6 §6.4.3.7, EN 61008-1 Table 1, and BS 7671 Regulation 643.8.

Pending / Not tested — results stay neutral until valid measured values are entered.

  • 0.5x IΔn Non-Operating Hold Verification

    -

    Not tested - enter the measured value. Acceptance: RCD must NOT trip at 0.5x IΔn test current [EN 61008-1 Table 1 / IEC 60364-6]

    Pending
  • Worst-Case Break Time at 1x IΔn (max of 0 deg / 180 deg)

    - ms

    Not tested - enter the measured value. Acceptance: t_trip <= 300 ms for General Non-Delayed RCD at 1x IΔn [EN 61008-1 Table 1 / EN 61009-1]

    Pending
  • Fast Disconnection Time at 5x IΔn (Additional Protection)

    - ms

    Not tested - enter the measured value. Acceptance: t_trip <= 40 ms at 5x IΔn (mandatory for IΔn <= 30 mA additional protection) [IEC 60364-4-41 §415.1 / EN 61008-1 Table 1]

    Pending
  • Sinusoidal Ramp Trip Threshold I_Δtrip

    -

    Not tested - enter the measured value. Acceptance: 0.50 x IΔn < I_Δtrip <= 1.00 x IΔn under sinusoidal AC ramp [EN 61008-1 §5.3.3]

    Pending
  • Fault Contact Voltage Uc at Rated IΔn

    - V

    Not tested - enter the measured value. Acceptance: Uc <= 50 V AC touch voltage safety limit [IEC 60364-4-41 §411.5.3]

    Pending

Verification Checklist (0 / 12)

Pending
  • 1RCD type (Type A / F / B) matches connected load harmonic & DC fault profile (no Type AC on VFD, EVSE, UPS or inverter loads!) [IEC 60364-5-53 §531.3.3]

  • 2Upstream Selective Type S RCD (>= 3x downstream IΔn and time-delayed) coordinated with downstream 30 mA RCDs for total vertical selectivity

  • 3Integral mechanical 'T' (Test) button actuated and verified to trip the breaker cleanly (user quarterly/6-monthly notice affixed)

  • 4RCD tested with downstream loads disconnected (or standing earth leakage current verified < 0.3 x IΔn to avoid false ramp readings)

  • 50.5x IΔn non-trip hold verified at both 0 deg and 180 deg half-cycles without nuisance tripping

  • 61x IΔn disconnection time verified at both 0 deg and 180 deg phase angles (worst-case value recorded)

  • 75x IΔn fast disconnection time (<= 40 ms) verified for all <= 30 mA socket-outlet and personal-protection RCDs [IEC 60364-4-41 §415.1]

  • 8Pulsating DC (0 deg / 180 deg) test verified on Type A / F RCDs and smooth DC (<= 2x IΔn or 6 mA RDC-DD) verified on Type B RCDs

  • 9Neutral (N) and Protective Earth (PE) strictly isolated downstream of every RCD (zero N-PE bridges causing parallel return paths)

  • 10Multi-pole RCD neutral pole verified as early-make / late-break (closes before and opens after phase contacts)

  • 11Short-circuit backup protection (gG fuse / upstream MCCB Inc / IΔc coordination) verified against prospective fault current Ipf

  • 12Enclosure IP rating, DIN-rail clip locking, terminal torque, and circuit directory labeling verified

General Notes

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