SPECIFICATION NO. : RDSO/SPN/173/2002
RDSO APPROVED. : YES
DESCRIPTION :
Fail Safe Flasher is designed to work at 24V input with variation +30% to -10% ,giving flashing output of 24V DC ±20% at 3A with 50 ± 2 flashes per minute. Micro-controller is used to make the design of the flasher as fail safe so that no steady output is delivered in case of any failure.
The electronic flasher device shall operate satisfactorily either from primary or secondary cells or unsmooth full-wave rectifier supply (true RMS) from single phase,50 Hz sinusoidal AC supply. The rated current, voltage and ambient temperature shall be as follows:-
The design of the circuit is of fail safe nature so that no steady output is delivered in case of failure or open circuit/short circuit or ageing of any component or any momentary switching OFF/ON of the power supply or external surges due to picking up and dropping of relays connected across the supply to the flasher device.
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