Delta M80U User Manual

- 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
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03
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05
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06
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07
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08
+01 +02 +03 +04 +05 +06
+07 +08
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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 2IN 1 IN 2
--
-- --
++
++ ++
--
++
--
++
--
++
Input 1 Fuse holders Input 2 Fuse holders
+01 +02 +03 +04 +05 +06
+07 +08
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01
-
02
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03
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04
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05
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06
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07
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08
+01 +02 +03 +04 +05 +06
+07 +08
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02
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03
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04
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05
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06
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07
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08
Input 1 Fuse holders Input 2 Fuse holders
Figure 3-25: Wiring Box layout for M80/60U_120
AC Switch
49
Installation

Delta M80U Specifications

General

Brand	Delta
Model	M80U
Category	Inverter
Language	English