Belkin F9H100vukcw mains surge protector, 2010

Used with an amp with mains drop out occassionally, after an hour or so of use but nothing found wrong with the amp and no reported problems with the mains. Anyone aware of problems with these supposed surge suppressors? or even how they work A GDT axial 115 deg C 5A (one-time?) thermal fuse and a small radial thermal switch or fuse , probably one of those miniature bimetal dome resettable combined temp + current switches X2 yellow block and 3 green polyester caps, is all the componentry ,no active seen other than

2x100K , 2x LED, 2x 4007 for 2 indicators Vibrated the radial sw with engraver tool and not found susceptible. But if a cap was going ohmic and passing excess current there could be intermittant problem via that, but no discolouration on any cap. To get to the pcb proper would mean destroying spot weld power lead connections. This amp is regularly PAT tested, whether with this adaptor in line not known and because pcb traces not seen, don;t know if there is a ground connection involved. Obviously advicing the owner to obtain another one if he wishes to continue using a surge protector, as an interim and removing the adaptor for future PAT testing , rather than suspecting amp internal mains Tx wiring at this stage
Reply to
N_Cook
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I'm assuming the "drop out" is caused by the circuit breaker in the surge suppressor, and that resetting it restores operation.

A fire marshall told me that surge suppressors sometimes have poor-quality circuit breakers. Their resistance is too high, and they overheat. This can cause fires.

I suspect the breaker is bad. Once the amp runs long enough, the breaker gets hot enough to trip.

Reply to
William Sommerwerck

can

As they are combined current and temp trip then makes some sort of sense even if the amp only takes 1 amp of mains . But over an hour and a bit of contact corrosion/localised heating or something is enough to supply the temp component . Googling around Belkin surge protectors a reported problem is Neutral - Ground short internally to them , which could easily be due to PAT testing , but confirms there must be a connection to mains ground inside them

Reply to
N_Cook

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