Delta M42U User Manual

Figure 5-9: String monitor
1 :
2 :
3 :
8.0
0.0
7.9
4 :
5 :
6 :
8.0
8.1
8.0
IDC1 (A)
1 :
2 :
3 :
8.0
8.1
7.9
4 :
5 :
6 :
8.0
0.0
8.1
IDC2 (A)
Fuse open
or blown
Fuse open
or blown
Check the combiner fuses if the power generation of inverter is abnormal using
the following procedure:
1. Check “Power meter/string monitoring” page on the LCD display, to determine
if any string current measurement is zero, which will most probably indicate
a blown fuse. (Figure 5-9)
2. Switch AC and DC power off and wait until LCD display turns off.
3. To access the wiring box, use procedure found in Section 5.1.1
4. Based on step 1, check the corresponding fuse locations by pulling out the
fuse holder (Figure 5-8) and checking continuity of the fuse.
5. Replace the fuse if necessary.
6. Re-install the WB cover, using the procedure found in Section 5.1.2
78
Maintenance

Delta M42U Specifications

General

Brand	Delta
Model	M42U
Category	Inverter
Language	English