Photovoltaic fuse UL certification standards
standard requirements
1. put "PV", "gPV" on the fuse; or "photovoltaic fuse".
2. If the fuse is equipped with terminals, it should be marking (on the fuse or on the minimum package) according to the requirements of the relevant standards of the terminals.
It cannot be used to protect the components inside the photovoltaic inverter, such as capacitors, nor can it be used to prevent the reverse irrigation of such capacitors.
4. Rated voltage <= 1500V dc.
5. Can not be marked with "Current Limiting" Marking.
Photovoltaic fuse UL248-19 certification test project
1. VERIFICATION OF TEMPERATURE RISE AND IN: Temperature Rise
2. VERIFICATION OF OVERLOAD OPERATION: overload
3. VERIFICATION OF OPERATION AT RATED VOLTAGE: Breaking
4. VERIFICATION OF THERMALLY INDUCED DRIFT: high and low temperature cycle
5. VERIFICATION OF CURRENT CARRYING CAPACITY (IN):(AFTER UNACCEPTABLE LEVELS THERMAL DRIFT) temperature rise after high and low temperature cycle
6. VERIFICATION OF OVERLOAD OPERATION:(AFTER UNACCEPTABLE LEVELS THERMAL DRIFT) overload after high and low temperature cycle
7. VERIFICATION OF OPERATION AT RATED VOLTAGE:(AFTER UNACCEPTABLE LEVELS THERMAL DRIFT) Break off after high and low temperature cycle
8. VERIFICATION OF FUNCTIONALITY AT TEMPERATURE EXTREMES high temperature environment function test
9. VERIFICATION OF CURRENT CARRYING CAPACITY (IN):(AFTER FUNCTIONAL TEMPERATURE EXTREMES) Temperature rise in high temperature environment
10. VERIFICATION OF OVERLOAD OPERATION:(AFTER FUNCTIONAL TEMPERATURE EXTREMES) overload in high temperature environment
11. CURRENT CYCLING current cycling
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