Figure 5-8: Finger-safe fuse holder with blown fuse indicator shown
Finger-safe fuse holder
①
②
Figure 5-7: Fuse Board (PWB) and fuse holder locations for M80/60U_120
Blown fuse LED Indicator
The M80/60U_120 wiring box is equipped with 32 DINrail mounted combiner
fuses, which support connection of up to 16 strings (eight/MPPT). The
fuses are carried within Dead Front Fuse Holders (see Figure 5-7), which
are designed to be "Finger Safe", i.e., opening a fuse holder disconnects
the fuse at both ends, allowing safe removal by hand.
The fuse holders also feature a "blown fuse" LED indicator that provides
the user a visual indication of any open fuses. This design provides optimum
safety to personnel who replace the string fuses. Figure 5-8 shows the detail
for removing/re-installing string fuses for this model. Refer to Figure 2-5 for
additional information.
91
Maintenance
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