Ac Connection Terminal; Type-2 Ac Surge Protection Devices - Delta M70A Installation And Operation Manual

4 Product overview
AC-side components

4.4.2 AC connection terminal

Fig. 4.4: Position of the AC terminal
The inverter is suitable for 3-phase grids with/without neutral
conductor.
The PE connection is realized as a separate bolt. The M10 nut,
spring washer and washer are already mounted in the inverter.
Related topics
"5.4 Grid connection (AC)", page 34
"5.4.10 AC terminal block specifications", page 36
"5.4.11 Specification for copper cable", page 36
16

4.4.3 Type-2 AC surge protection devices

Fig. 4.5: View of type 2 AC surge protection devices with the
cover removed
The inverter has replaceable type-2 AC surge protection devices
which protect the inverter against excessive voltages. The type-2
AC surge protection devices are replaced as a block.
Type 2 OCM as per EN 61643-11
Rated current I
n
Maximum current I
max
Voltage U
P
Table 4.4.: Specification of the pre-installed type-2 AC surge pro-
tection devices
Type 1+2 combined AC surge protection devices can be ordered
as accessories.
Related topics
"10.10 Replacing the AC surge protection devices", page 132
Installation and Operation Manual for Solar Power Inverter M70A EU V1.1 EN 2020-02-20
10 kA (8/20 µs)
20 kA (8/20 µs)
895 V
AC