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Symptom: the grid fails and the essential loads go dark — or the backup trips within seconds of every outage.
For trained/authorized installers only. Simulated-outage testing opens live breakers with the customer’s loads attached — brief them first.

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Check first

  1. What was on the backup at the moment of failure? Peak load history and the customer’s account — one appliance too many is the leading cause.
  2. Battery state at the time — an empty or threshold-parked bank has nothing to give; that branch is Battery Not Discharging.
  3. Which device tripped — inverter alarm, backup MCB, or an RCD? An RCD points to Nuisance Tripping.

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Prove the fix

Re-run the black-start test with the real essential loads: open the grid breaker, loads ride through, clean return on restore, no RCD trip. 📷

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Escalate when

  • Overload trips repeat with measured load inside the platform’s ratings — hardware check.
  • Any suspicion the Grid supply ever reached the Backup port.
  • Transfer behaviour is erratic after the above causes are cleared.

Escalate to Kent New Energy service only — through your registered Kent partner channel or the Kent service desk details on your work order. Do not contact any third-party or component-manufacturer support line for a Kent-branded system: tickets outside the Kent channel are not tracked, not covered, and can void warranty handling.