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Electricity Connection
5.
Electrical Connection
System Connection
L1L2L3 N PE
PV+
PV-
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Three phase Grid-tied PV String Inverter User Manual
DANGER
Before electrical connection, please ensure
that the inverter AC and the DC end is
charged, otherwise there will be a high
voltage shock.
PE
PE
N
L3
L2
L1
Grid
PE
Three phase Grid-tied PV String Inverter User Manual
5.1
Grounding
According to the EN50178 requirement, the right side of the device has a protective grounding connection.
Be sure to connect this interface to the grounding line when installing the device.
The user can ground connection according to the on-site condition.
Step1.Remove an appropriate length using a wire Stripper.
Step2.Insert the exposed core wires into the crimping areas of the OT terminal and crimp them
using hydraulic pliers.
Step3.Remove the ground screws from the ground points.
Items
Screw
OT Terminal
Yellow green lines
Ensure that the grounding resistance is less than 10Ω.
According to regulations,the secondary protection grounding can't replace
the PE terminal connection of the AC cable. Ensure that both are grounded
WARNING
reliably,otherwise,fatal injury can occur due to the high voltage.
If the positive pole or negative pole of the PV array is required to be
grounded, then the inverter output (to AC grid) must be isolated by
CAUTION
transformer in accordance with IEC63109-1,-2 standards.
Electricity Connection
Remark
M6 × 12mm; 3 N.m
OT6-6(5K-15K);
OT16-6(17K-25K)
≥ S
S
(Yellow green lines)
(PE line of DC cable)
S is the cross-sectional area.
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