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Run this list top to bottom on every Kent hybrid installation, then the platform list. Field order: environment → electrical pre-checks → power-up → function tests → documentation.
For trained/authorized installers only. Isolation rules from Isolation & Shutdown apply throughout.

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A. Environment

  • Site & environment photo audit — canopy/shade, clearances, glands + drip loops, no drip sources above. Pass: full set per the photo checklist. 📷
  • Wall/mount integrity — anchor pull-check, bracket level, unit secured. Pass: no movement, level true.
  • Clearances measured per platform figures. Pass: at or above minimums. 📷

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B. Electrical pre-checks (everything OFF)

  • Earth continuity + pit resistance — PE continuity to the inverter earth point(s); earth tester at the pit, reading photographed. Pass: continuity good; reading logged. 📷 [KNB-VAL-14 — apply the interim rule: measure, photograph, escalate poor soil]
  • PV string open-circuit voltage + polarity — meter every string before DC ON. Pass: below the platform limit, polarity correct, values logged.
  • Battery polarity + terminal torque — check before closing the battery breaker. Pass: polarity correct; torqued to the platform-page value.
  • Grid vs Backup port verification — trace and label both AC runs; continuity test. Pass: grid on Grid port, essential loads on Backup only. 📷
  • Kent Lithium Battery comm cable — confirm the labelled Kent F1 comm cable (pins 4-5 crossover) is fitted between battery and inverter; a straight patch lead will not communicate. Pass: labelled cable in place, photographed. 📷
  • SPDs fitted — Type II on AC and DC sides, earthed. Pass: fitted, flags healthy.

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C. Power-up

  • Official power sequence followed — AC breaker first → PV DC → battery last; power-off is the exact reverse, battery first. Pass: clean boot, no sequence faults.

Power sequences per platform — figures KNB-SVG-02 and KNB-SVG-03

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D. Function tests

  • BMS handshake (closed loop) — inverter shows the battery model and a live SOC % that updates. Pass: exact SOC visible and moving. If it fails, check the crossover comm cable before touching settings.
  • Battery charge AND discharge test — drive both directions; watch current against the platform limits. Pass: both directions work within limits.
  • CT/meter sanity (direction + phase) — with grid ON and PV OFF the display must read import; then step loads per phase. Pass: signs and phases correct. [KNB-VAL-08 — read the ratio off the shipped CT nameplate and set exactly that]
  • Zero-export configuration + witness test (export-limited sites) — configure per the platform page; then with PV high and site load minimized, watch the utility meter. Pass: no sustained export above the set limit. 📷
  • Black-start / backup transition — with real essential loads connected, open the grid breaker. Pass: loads ride through; clean return on grid restore; no RCD trip.
  • N-E voltage in backup — measure neutral-to-earth during the simulated outage and record the value. [KNB-VAL-04 — record for Kent review; do not improvise bonds]

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E. Documentation

  • Datalogger stick fitted (physical fitting only) — activated with Kent Central Command — documentation to follow. Pass: stick seated and photographed. 📷
  • Settings snapshot — photograph every settings screen after final configuration. 📷
  • Handover + sign-off — walkthrough done, DO/DON’T card left, customer signature captured. Pass: signed record with the photo set attached.

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Common mistakes

  • Blaming settings for a BMS comm failure that is the cable — crossover check comes first.
  • Running the backup test with a lamp instead of the real essential loads.
  • Leaving zero-export “configured” but never witnessed against the utility meter.

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When to escalate