Questions
1. The Kent M1 Hybrid Inverter is a:- A. Three-phase platform with split-phase output
- B. Single-phase platform — one AC grid input and one AC backup output
- C. Three-phase platform sharing a single grid connection
- D. Single-phase platform with three-phase battery input
2. The maximum PV string open-circuit voltage (Voc) the Kent M1 accepts is:
- A. ≤ 450 V
- B. ≤ 500 V
- C. ≤ 550 V
- D. ≤ 600 V
3. Kent M1 AC terminal torque is:
- A. 0.5 N·m
- B. 1.2 N·m
- C. 2.5 N·m
- D. 4–5 N·m
4. Dual PE (protective earth) termination on the Kent M1 AC port is:
- A. Optional — single PE is adequate for residential installations
- B. Required only on TT earthing systems
- C. Mandatory on all Kent M1 installations
- D. Required only when the battery is connected
5. Kent M1 backup maximum output current by model — 3 kW / 5 kW / 6 kW — is:
- A. 10 A / 20 A / 25 A
- B. 16 A / 32 A / 40 A
- C. 15 A / 25 A / 30 A
- D. 20 A / 30 A / 35 A
6. The Kent M1 grid-charge function ships from the factory:
- A. Enabled by default for lithium batteries
- B. Disabled by default — enable it deliberately where the design requires it
- C. Controlled automatically by the BMS based on SOC
- D. Enabled only when the battery falls below 20 % SOC
7. Kent M1 Time-of-Use (TOU) programming uses:
- A. 6 time slots tiling 24 hours, with discharge power set in watts
- B. 6 + 6 windows, with charge/discharge current set in amps
- C. A single day/night pair with a percentage of rated power
- D. 4 slots with start time, end time, and a mode flag only
8. For Kent M1 parallel systems, the DIP switch scheme at the first and last unit is:
- A. A 2-way switch with both pins ON at first and last unit
- B. No DIP switches — addressing is software-only
- C. A 3-way switch with pins 1 & 3 enabled at first and last unit
- D. A 3-way switch with all three pins ON at every unit
9. The first step of the Kent M1 power-ON sequence is:
- A. Turn on the battery button switch
- B. Close the PV DC disconnect switch
- C. Close the AC protection switch on the grid side
- D. Press the inverter power key on the display
10. The Kent M1 GEN port accepts:
- A. A three-phase generator of any rated size
- B. Grid-tied micro-inverters only
- C. A single-phase generator up to 6 600 VA / 30 A
- D. Nothing — the GEN label is a monitoring input only
Answer key
| Q | Answer | Why |
|---|---|---|
| 1 | B | The Kent M1 is a single-phase hybrid inverter. One AC grid connection, one AC backup output. Not to be confused with the three-phase Kent G3. |
| 2 | B | The Kent M1 maximum PV open-circuit voltage is 500 V. String design must keep Voc at worst-case (cold) temperature below this limit. |
| 3 | B | Kent M1 AC terminal torque is 1.2 N·m. The Kent G3 is 4–5 N·m — a common mix-up on mixed-fleet crews. |
| 4 | C | Dual PE is mandatory on all Kent M1 installations. A single PE connection is not compliant. |
| 5 | C | 15 A (3 kW) / 25 A (5 kW) / 30 A (6 kW). Size the essential panel to the specific model’s figure — 30 A is only valid for the 6 kW unit. |
| 6 | B | Grid-charge ships disabled by default on the Kent M1. Enabling it is a deliberate design choice — not automatic. On outage-first homes, enable it at commissioning. |
| 7 | A | The Kent M1 TOU uses 6 time slots tiling 24 hours, with power set in watts. The Kent G3 uses amps — a common platform-mix error. |
| 8 | C | 3-way DIP switch, pins 1 and 3 enabled at the first and last unit in the parallel chain. |
| 9 | C | The Kent M1 power-on sequence: close AC protection switch first. Power-off is the reverse — battery off first. |
| 10 | C | The Kent M1 GEN port accepts a single-phase generator up to 6 600 VA / 30 A. The Kent G3 GEN port is three-phase only. |