EN
61
5.9.5.3 AC line connection
• Pass the AC cables through the single core cable glands
(62)
or
multicore cable gland
(63)
on the AC panel. The lenght of phase
cables on the internal side of wiring box need to be about 300 mm
(cable lug included).
• Fix the phases and neutral (if required) cable lugs to the AC
connection busbars
(21)
, paying attention to the corrispondence
of the phases with the labels, using the washers and the M10 nuts
pre-installed on the busbar as shown in the following diagram:
1 = cable lug
2 = flat washer
3 = spring washer
4 = M10 nut
1
2
3
4
1
2
3
4
R
S
T
N
21
ATTENTION –
A
In case of a wrong phase sequence the
inverter will not connect to the grid and it will provide an error
state.
ATTENTION –
A
The cable lugs must be installed with a
tightening torque of 25Nm.
• Re-install the AC protective shield
(27)
by using the M5 screw
previously removed with a tightening torque of 3 Nm.
ATTENTION –
A
During this phase check that the position of
the sliding cover
(A)
is in the original position (see the arrow).
This means that the hole (in the yellow circle) on the AC
protective shield
(27)
must be closed.
27
A
• At the end of installation check the tightness of:
-8Nm for single core AC cable gland
(62)
or
25Nm for multi core AC cable gland
(63)
- 7.5 Nm for Protective earth cable gland
(23)
ATTENTION –
A
Make sure the cable glands are properly
sealed to ensure to keep IP65 protection degree.
ATTENTION –
A
In case of the single core AC cable gland
(62)
was accidentally removed during the cable routing
phase, it will needed to assure the correct tightness of the
lock nut of the cable gland to the inverter chassis with a
tightening torque of 8.0 Nm (for each cable gland).
