> ## Documentation Index
> Fetch the complete documentation index at: https://learning.kent.co.in/llms.txt
> Use this file to discover all available pages before exploring further.

# Common Commissioning Checklist for Kent Hybrid Sites

> Every Kent hybrid site, both platforms: environment, electrical pre-checks, power-up, function tests, and documentation in field order.

Run this checklist top to bottom on every Kent hybrid installation — then follow with the platform-specific list. Field order is: environment → electrical pre-checks → power-up → function tests → documentation.

<Warning>
  **For trained and authorized installers only.** Isolation rules from [Isolation & Shutdown](/safety/isolation-and-shutdown) apply throughout this checklist.
</Warning>

## A. Environment

Work through the environment section with all power off and before any electrical connections are made.

* [ ] **Site and environment photo audit** — photograph canopy/shade, clearances, glands and drip loops, and confirm no drip sources above the unit. **Pass:** full set per the [Site Photo Checklist](/environment/site-photo-checklist). 📷
* [ ] **Wall/mount integrity** — pull-check every anchor, verify the bracket is level, and confirm the unit is fully secured. **Pass:** no movement under pull-check; level confirmed.
* [ ] **Clearances measured** per the platform figures. **Pass:** all measured clearances meet or exceed the platform minimums. 📷

## B. Electrical pre-checks (everything OFF)

Do not energise anything until every item in this section is ticked.

* [ ] **Earth continuity and pit resistance** — verify PE continuity to the inverter earth point(s); use an earth tester at the pit and photograph the reading. **Pass:** continuity confirmed; resistance reading logged and photographed. 📷 Escalate if soil resistance is poor.

<Note>**Pending Kent validation.** \[KNB-VAL-14] Minimum acceptable pit resistance is under confirmation. Until published here: measure, photograph, and escalate if soil resistance is poor — do not improvise an earth standard.</Note>

* [ ] **PV string open-circuit voltage and polarity** — meter every string before applying DC. **Pass:** Voc is below the platform limit, polarity is correct, and values are logged.
* [ ] **Battery polarity and terminal torque** — check polarity before closing the battery breaker; torque to the platform-page value. **Pass:** polarity confirmed correct; terminals torqued to spec.
* [ ] **Grid vs Backup port verification** — trace and label both AC runs; confirm by continuity test. **Pass:** grid supply lands on the Grid port; essential loads land on the Backup port only. 📷
* [ ] **Kent Lithium Battery comm cable** — confirm the labelled Kent F1 comm cable (pins 4–5 crossover) is fitted between the battery and the inverter. A straight patch lead will not communicate. **Pass:** labelled crossover cable in place and photographed. 📷
* [ ] **SPDs fitted** — Type II SPDs on AC and DC sides, correctly earthed. **Pass:** fitted and fault flags are healthy.

## C. Power-up

Apply power in the official sequence only. Do not deviate.

* [ ] **Official power sequence followed** — **AC breaker first → PV DC → battery last**. Power-off is the exact reverse: battery first. **Pass:** clean boot with no sequence faults.

<Note>
  The power-up sequence is the same for both platforms: AC first, battery last. The power-down sequence is the reverse: battery first, AC last. Both sequences are shown on the platform commissioning pages.
</Note>

## D. Function tests

Run every test in this section before completing documentation.

* [ ] **BMS handshake (closed loop)** — the inverter display must show the battery model name and a **live SOC percentage** that updates. **Pass:** exact SOC visible and updating. If this fails, check the crossover comm cable **before** touching any settings.
* [ ] **Battery charge and discharge test** — drive current in both directions and watch against the platform limits. **Pass:** both charge and discharge operate within limits.
* [ ] **CT/meter sanity — direction and phase** — with grid ON and PV OFF, the display must read **import**; then step known loads per phase and verify. **Pass:** signs and phases correct on the display. Read the CT ratio from the shipped CT nameplate and set exactly that value.

<Note>**Pending Kent validation.** \[KNB-VAL-08] The shipped CT scheme and ratio per Kent SKU are under confirmation. Until published here: read the ratio from the shipped CT's nameplate — never assume a default.</Note>

* [ ] **Zero-export configuration and witness test** (export-limited sites only) — configure per the platform page; then with PV generation high and site load minimised, watch the utility meter for sustained export. **Pass:** no sustained export above the configured limit. 📷
* [ ] **Black-start / backup transition** — with real essential loads connected, open the grid breaker. **Pass:** loads ride through the transfer; clean reconnect on grid restore; no RCD trip.
* [ ] **N–E voltage in backup** — measure neutral-to-earth voltage during the simulated outage and record the value. Do not improvise neutral–earth bonds.

<Note>**Pending Kent validation.** \[KNB-VAL-04] The N–E voltage specification in backup mode is under confirmation. Until published here: record the measured value for Kent review — do not improvise neutral–earth bonding.</Note>

## E. Documentation

* [ ] **Datalogger stick fitted** — seat the physical stick and photograph. **Pass:** stick seated in the correct port and photographed. 📷 Activation is completed with Kent Central Command — documentation to follow.
* [ ] **Settings snapshot** — photograph every settings screen after final configuration. **Pass:** every screen captured. 📷
* [ ] **Handover and sign-off** — complete the customer walkthrough, leave the DO/DON'T handover card on site, and capture the customer's signature. **Pass:** signed record with the full photo set attached.

## Common mistakes

* Blaming settings for a BMS comm failure that is actually the cable — the crossover check comes before any settings work.
* Running the backup test with a desk lamp instead of the actual essential loads — the test must reflect the real installation.
* Leaving zero-export "configured" but never witnessed against the utility meter — configuration without a witness test is not a pass.

## Related pages

* [Kent M1 Commissioning Checklist](/checklists/m1-commissioning)
* [Kent G3 Commissioning Checklist](/checklists/g3-commissioning)
* [Site Photo Checklist](/environment/site-photo-checklist)
* [Isolation & Shutdown](/safety/isolation-and-shutdown)
* [When to Escalate](/troubleshooting/when-to-escalate)