Schematic diagram of traditional water dispenser

(1)S2 is the power switch. As long as it is on, the water dispenser must be working (heating or keeping warm). S 1 is an automatic temperature control switch. Turn on the power switch, and the water to be heated does not reach the required temperature and is in a heating state (power is 500 W). When the water heated by water reaches the required temperature, it will trip, and the water dispenser will keep warm (power 10W).

(2) I don't know whether it is insulation resistance or heating resistance. If you expect your R 1 to be the heating resistance and R2 to be the insulation resistance, then: r1= u/i.

=U/P 1/U

=U？ /P 1

=220? /500

=96.8Ω

Formula conversion is the same as above R2=U? /P2

=220? / 10

= 1840Ω

(3)W=P 1*T+P2*T

=0.5kw*2h+0.0 1kw*6h

=1.06kw/h (degree)