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Ten questions from the CT, Meter & Zero Export group. Attempt all ten before checking the key. Suggested pass mark: 8/10.

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Questions

1. The universal Kent CT rule on both platforms is:
  • A. Arrow toward the loads, clamped anywhere convenient
  • B. Arrow toward the grid, clamped at the grid connection point
  • C. Arrow toward the inverter, on the backup feed
  • D. Direction is irrelevant — software corrects it
2. The CT ratio setting comes from:
  • A. The platform default
  • B. The DISCOM’s standard table
  • C. The meter’s LCD
  • D. The nameplate of the shipped CT — set exactly that, never assume
3. Fast power fluctuation on the display with steady loads points at:
  • A. A failing battery
  • B. Wrong CT direction — the control loop is chasing itself
  • C. Grid frequency drift
  • D. A firmware bug
4. The manual-anchored way to kill a residual trickle export on the Kent G3 is:
  • A. A small negative Export calibration
  • B. Turn the inverter off at high PV
  • C. Doubling the CT ratio
  • D. Selecting “No Meter”
5. For zero-export intent on the Kent M1:
  • A. Solar Sell stays ON with Max sell power high
  • B. Solar Sell OFF — and the zero-export witness test is mandatory before sign-off
  • C. Remove the CT
  • D. Only the meter setting matters
6. On a Kent G3 site with no feed-in permission:
  • A. Max export power is set to 0
  • B. Allow Export is set to maximum
  • C. Export settings are left at default
  • D. The grid code is changed instead
7. If the supplied CT lead cannot reach the grid connection point:
  • A. Extend it with matching twisted pair
  • B. Extend it with any shielded cable up to 10 m
  • C. Do not extend it — use the platform’s meter scheme instead
  • D. Move the inverter
8. The Kent G3 smart meter connects to the inverter over:
  • A. CAN on pins 4/5
  • B. WiFi pairing
  • C. RS485 A/B per the pin map — polarity matters
  • D. A current loop
9. The CT clamps around:
  • A. Live and neutral together
  • B. The grid main live conductor only
  • C. The earth conductor
  • D. The backup feed
10. A Kent M1 export-limit alarm (E105) calls first for:
  • A. A grid-code change
  • B. Battery replacement
  • C. Ignoring it — cosmetic only
  • D. Checking the meter/CT communication and installation per the fault guidance

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Answer key

  1. B
  2. D
  3. B
  4. A
  5. B
  6. A
  7. C
  8. C
  9. B
  10. D