Delta M60U, Operation And Installation Manual

Page: 49 / 130

- When 20A string fuses are utilized do not use input 3 or input 6 on
either MPPT channel.
CAUTION !
Input 1 Fuse holders Input 2 Fuse holders
+01 +02 +03 +04 +05 +06
+07 +08
-01 -02 -03 -04 -05 -06
-07 -08
+01 +02 +03 +04 +05 +06
+07 +08
-01 -02 -03 -04 -05 -06
-07 -08
M80U
_120
version is compatible with 1000V/20A UL listed fuse, however, the
designer must be beware of the following requirements:
• The max Isc-stc of a connected array (sum of all paralleled strings) cannot exceed
the rated Isc limit of the inverter, that is no more than 108A/input or 216A total.
• Because of internal current limitations and higher string currents allowable with
20A fuses, inputs 3 and 6 must not be used.
Figure 3-26: Prohibited fuse location using 20A fuse
IN 1 IN 2 IN 1 IN 2
- -
- - - -
+ +
+ + + +
- -
+ +
- -
+ +
- -
+ +
Input 1 Fuse holders Input 2 Fuse holders
+01 +02 +03 +04 +05 +06
+07 +08
-01 -02 -03 -04 -05 -06
-07 -08
+01 +02 +03 +04 +05 +06
+07 +08
-01 -02 -03 -04 -05 -06
-07 -08
Input 1 Fuse holders Input 2 Fuse holders
Figure 3-25: Wiring Box layout for M80/60U
_120
AC Switch
49
Installation