surge damage

[jabuzzard]

A term 'surge' or 'power surge' is quite specific. From the IEEE, an overstress condition that has a duration of less than a few milliseconds. A swell is an overvoltage that can last a few cycles. You have described an overvoltage. All specifically defined by the IEEE.

Note that the IEEE is an USA based organization, and therefore it's definitions are not necessarily applicable in the United Kingdom which has it own organization the IET, formed from the merger of the IEE and IIE, and has a history that predates the IEEE.

Remember this is U.K. based website and this in particular is an Electrics in the U.K. forum.

 

[stillp]

A term 'surge' or 'power surge' is quite specific. From the IEEE, an overstress condition that has a duration of less than a few milliseconds. A swell is an overvoltage that can last a few cycles. You have described an overvoltage. All specifically defined by the IEEE.

Note that the IEEE is an USA based organization, and therefore it's definitions are not necessarily applicable in the United Kingdom which has it own organization the IET, formed from the merger of the IEE and IIE, and has a history that predates the IEEE.

Remember this is U.K. based website and this in particular is an Electrics in the U.K. forum.

To be even more precise, ther IET bases its definitions on European standards, which in turn are based on the IEC International Electrotechnical Commission) standards. The IEC definition of voltage surge is "a transient voltage wave propagating along a line or a circuit and characterized by a rapid increase followed by a slower decrease of the voltage".

But back to the OP: failures can occur from the overvoltage, or from the rate of increase of voltage. You refer to "when the power cuts off or when it reinstates", which isn't a characteristic of a surge, although it might result from the behaviour of a surge protection device.