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Vertiv
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+24 VDC Power System User Manual (Section 6013)
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Rev. G
177
Distribution Device Alarm Fuse Replacement Procedure
NOTE!
If a TPH-type fuse opens, the associated alarm fuse opens. Replace the TPH-type fuse before
replacing the alarm fuse. Likewise, if a TPS/TLS-type fuse opens, the associated alarm fuse opens.
Replace the TPS/TLS-type fuse before replacing the alarm fuse.
1.
An alarm, reference, or control fuse can be removed by pulling it straight out of the fuseholder.
2.
Safety fuse covers are provided for all Bussmann GMT type fuses installed in the system. These covers
snap onto the fuses and provide protection from exposed electrical terminations when a fuse opens.
Insure that the safety fuse cover is installed after replacing a fuse. Refer to
details.
Figure 22:
Installation of Safety Fuse Covers
Rectifier Module Fuse Replacement
Each Rectifier Module contains an input and output fuse. These fuses are not customer replaceable. If a fuse
opens, replace the entire Rectifier Module. An open fuse causes the unit’s Rectifier Module FAIL alarm circuit
to activate. The input fuse has a higher amperage rating than the recommended external branch circuit
protection.
Safety Cover
Part No. 102774
BUSSMANN
GMT
BUSSMANN
GMT
Safety Cover
Part No. 248898700