MIL-HDBK-1004/10
(2)
Voltage drop in riser anode feeder:
E = IR
where
I
=
3.62 A
R
=
0.032 ohm
E
=
3.62 x 0.032
E
=
0.116 V
(3) Voltage drop in riser anode suspension cables. Wire size
No. 2 AWG, 0.159 ohm/1,000 feet (refer to Table 10), estimated length 130
feet:
R = 130/1,000 x 0.159 = 0.02 ohm
E = IR
where
I = 3.62/2 = 1.81 A average (single current does not
flow the full length of the anode string)
R = 0.02 ohm
E = 1.81 x 0.02
E = 0.04 V
(4)
Voltage drop through riser anodes:
E = IR
where
I
=
3.62
A
R
=
2.63
ohms
E
=
3.62
x 2.63
E
=
9.52
V
(5)
Total voltage drop in riser anode circuit:
E
= 0.116 + 0.04 + 9.52
T
E
= 9.69 V
T
u)
Riser anode circuit variable resistor:
(1) Criteria for the variable resistor are the same as given
for the stub anode resistor.
(2)
Riser anode circuit data:
Rectifier output, 80 V
Anode current, 3.62 A
Anode resistance = 2.63 + 0.032 + 0.02 = 2.68 ohms
170