Sofar solar 3KTLM-G3 - Interface; DC switch parameters; PV terminal parameters; 4.2. Connecting PGND Cables

SOFAR 3K~6KTLM-G3 User manual
Copyright © Shenzhen SOFAR SOLAR Co., Ltd
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live part in the worst-case rated operating condition when used as intended.
Interface
DVC
PV input interface
DVCC
AC output interface
DVCC
USB interface
DVCA
Com interface
DVCA
DC switch parameters
Rated-insulation voltage
1100V
Rated impulse withstand voltage
8KV
Rated operational current (Ie)
1100V/5A, 1000V/8A,
800V/12.5A, 500V/25A
PV utilization category
DC-PV2
Rated short time withstand current (Icw)
700A
Rated short-circuit making capacity (Icm)
4xle
Rated breaking capacity
4xIe
PV terminal parameters
Rated-insulation voltage
1000V
Rated operational current
39A
Protection class
IP68
Maximum temperature limit
105℃
4.2. Connecting PGND Cables
Connect the inverter to the grounding electrode using protection ground (PGND)
cables for grounding purpose.
The inverter is transformer-less, requires the positive pole and negative
pole of the PV array are NOT grounded. Otherwise it will cause inverter
failure. In the PV power system, all non current carrying metal parts
(such as: PV module frame, PV rack, combiner box enclosure, inverter
enclosure) should be connected to earth.
Attention
Prerequisites:
The PGND cables are prepared ( ≥4mm²outdoor power cables are recommended
for grounding purposes), the color of cable should be yellow-green.