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Wiring PV into the Kent G3 starts with confirming the string voltages are inside the 1000 V envelope, landing each string on the correct MPPT, and understanding the arc-safety rule that applies every time you operate the DC switch.
DANGER — PV strings are live in daylight. Verify string open-circuit voltage is within the platform limit and polarity matches DC+ / DC− before any connector is inserted.

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PV Envelope

ParameterKent G3 10KWKent G3 12KWKent G3 15KW
Max input voltage1000 V1000 V1000 V
MPPT window (startup 160 V)200–850 V200–850 V200–850 V
Full-load MPPT range266–850 V320–850 V300–850 V
MPPT input currents (Isc)20 A + 40 A (30/50 A)20 A + 40 A (30/50 A)40 A + 40 A (50/50 A)
MPPTs / max strings2 / 32 / 32 / 4
Max usable PV16 kW19.2 kW24 kW
The MPPT inputs are asymmetric on the 10 kW and 12 kW models: 20 A + 40 A. Any paralleled or high-current string must land on the 40 A MPPT. The string plan must name the target MPPT for every string, and commissioning must verify the assignment before energizing.

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Connector Assembly

1

Prepare the cable

Use approved PV cable, 4–6 mm² (12–10 AWG), 4 mm² recommended. Strip 7 ± 0.5 mm — no more, no less.
2

Crimp the terminal

Crimp the metal pin with the DC crimping tool. Do not use a generic crimp — connector engagement depends on the correct pin profile.
3

Assemble the connector body

Slide nut → waterproof collar → pin into the connector body until it clicks. Pull gently to confirm full engagement.
4

Verify polarity

Measure the string voltage and confirm polarity with a multimeter before inserting the connector.
5

Insert into the inverter

Push the connector into the PV input until it clicks and will not pull out by hand.

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The 0.5 A DC-Switch Arc Rule

If DC inputs are reverse-connected or the inverter is faulty, do not open the DC switch until string current is below 0.5 A. Opening the switch above that threshold draws an arc that damages the switch contacts and voids the warranty.
Never operate the DC switch above 0.5 A string current. Damage from wrong operation is excluded from warranty. A clip-on DC ammeter is a required tool for every Kent G3 commissioning kit.
1

Measure string current

Clip a DC ammeter around one string conductor and read the current.
2

Wait if current is above 0.5 A

Do not touch the switch. Wait for irradiance to fall — early morning, late afternoon, or cloudy conditions — until the reading drops below 0.5 A.
3

Open the DC switch

Only when current reads below 0.5 A, open the DC switch.
4

Unplug the PV strings

After the switch is open, unplug the PV string connectors so the array cannot re-energize the fault the next morning.

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PV DC Protection

DC reverse-polarity protection, insulation-resistance detection, and DC surge protection are built into the inverter. A DC isolator is part of the design. External DC SPD is good Kent practice on sites with high surge exposure.

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Common Mistakes

  • A paralleled string landed on the 20 A MPPT of a 10 or 12 kW unit — overloads the input.
  • Opening the DC switch under fault current — this is the exact arc scenario the rule prevents.
  • Strings designed to 850 V at STC that exceed 1000 V open-circuit on a cold morning.
  • Mixed-brand PV connectors on the supplied counterparts — engagement and IP rating are not guaranteed.