Skip to main content
Sixteen questions from the Kent M1 group, including its troubleshooting flows. Attempt all sixteen before checking the key. Suggested pass mark: 13/16.

​
Questions

1. The first step of the Kent M1 power-ON sequence is:
  • A. Turn on the battery switch
  • B. Close the inverter’s PV DC disconnect switch
  • C. Close the AC protection switch on the inverter’s AC output side
  • D. Press the battery button switch
2. On first commissioning, the Kent M1 LCD asks for settings in this order:
  • A. Grid standard → time → battery → meter/CT → mode
  • B. Time → meter/CT → grid standard → operation mode → battery type + BMS protocol
  • C. Battery → grid standard → time → mode → meter/CT
  • D. Meter/CT → mode → time → battery → grid standard
3. Acceptable Kent M1 mounting orientation is:
  • A. Vertical or back-tilted up to 15°; never forward-tilt, side-tilt or horizontal
  • B. Vertical only, no tilt
  • C. Any angle including horizontal
  • D. Vertical ±5°
4. Kent M1 AC terminal torque is:
  • A. 0.5 N·m
  • B. 2.5 N·m
  • C. 4–5 N·m
  • D. 1.2 N·m
5. Kent M1 backup max output current per model (3 / 5 / 6 kW) is:
  • A. 10 / 20 / 25 A
  • B. 15 / 25 / 30 A
  • C. 20 / 30 / 35 A
  • D. 16 / 32 / 40 A
6. The Kent M1 PV string open-circuit voltage limit is:
  • A. ≤ 500 V
  • B. ≤ 450 V
  • C. ≤ 550 V
  • D. ≤ 600 V
7. For Kent M1 parallel systems, the DIP switch scheme is:
  • A. 2-way switch, both pins ON at first and last unit
  • B. 3-way switch, all pins ON at every unit
  • C. No DIP switches — software addressing only
  • D. 3-way switch, pins 1 & 3 enabled at the first and last unit
8. Kent M1 Time-of-Use programming works in:
  • A. 6 slots tiling 24 h, with power set in watts
  • B. 6+6 windows, with current set in amps
  • C. 4 slots, percentage of rated power
  • D. A single day/night pair
9. The Kent M1 grid-charge function ships:
  • A. ON by default
  • B. Locked ON for lithium batteries
  • C. OFF by default — enable it deliberately where the design needs it
  • D. Controlled only by the BMS
10. The Kent M1 GEN port accepts:
  • A. A three-phase DG of any size
  • B. A single-phase DG up to 6600 VA / 30 A
  • C. Only grid-tied micro-inverters
  • D. Nothing — it is a monitoring port
11. Kent M1 code E100 means:
  • A. PV overvoltage
  • B. Battery undervoltage
  • C. Fan failure
  • D. No AC Connection — restore the AC path (upstream breaker, terminations, cable)
12. Kent M1 E303 (AFCI) behaviour is:
  • A. Permanent lockout — service call always
  • B. Clears only after a battery reset
  • C. Auto-recovers, with 5 failures/day auto-clear — check the AFCI CT connection if repeating
  • D. Cosmetic — ignore it
13. Kent M1 E409/E410 during extreme ambient means:
  • A. Immediate pack replacement
  • B. Battery temperature protection — wait for temperature to normalise; fix siting if heat-driven
  • C. CT reversed
  • D. Grid overvoltage
14. Kent M1 E400–E402 with SOC missing points first at:
  • A. The battery cells
  • B. The BMS comm cable — label, continuity, seating, before any setting is touched
  • C. The grid code
  • D. The datalogger
15. An internal fault (Kent M1 E600–E602) that survives one restart is:
  • A. A Kent service case — stop, do not open the unit
  • B. A site wiring problem
  • C. Fixed by a factory reset
  • D. Fixed by swapping comm cables
16. Protection-point (trip threshold) changes require:
  • A. A customer signature
  • B. Nothing — they are installer settings
  • C. Utility consent, by authorized personnel
  • D. A firmware update

​
Answer key

  1. C
  2. B
  3. A
  4. D
  5. B
  6. A
  7. D
  8. A
  9. C
  10. B
  11. D
  12. C
  13. B
  14. B
  15. A
  16. C