Check for the damage of the PC communication port
12. APPENDIX
12.1 The choice of the electric cable
The choice of the electric cable depends on the allowable current of the cable and the distance
between the load and the generator. And the cable section should be big enough.
If the current in the cable is bigger than the allowable current, it will become over hot and the cable
will be burnt. If the cable is long and thin, the input voltage of the electric appliance will be not
enough, resulted that the generator doesn't start.
In the following formula, you can calculate the value of the potential "e".
The relations among of the allowable current, and length, section of the Insulating cable (single
core, multi-core) are as follow:
(Presume that the use voltage is 220V and the potential is below 10V)
The application of the single-core insulating cable: section mm²
Length
Current
50 m 75 m 100 m 125 m 150 m 200 m
50 A 8 14 22 22 30 38
100 A 22 30 38 50 50 60
200 A 60 60 60 80 100 125
300 A 100 100 100 125 150 200
The application of the multi-core insulating cable: section mm²
Length
Current
50 m 75 m 100 m 125 m 150 m 200 m
50 A 14 14 22 22 30 38
100 A 38 38 38 50 50 60
200 A 38x2 38x2 38x2 50x2 50x2 50x2
300 A 60x2 60x2 60x2 60x2 80x2 100x2
12.2. Modified coefficient table of ambient condition power
The conditions of generator rated output:
Altitude: 0 m Ambient temperature: 25 ℃ Relative humidity: 30%
Ambient modified coefficient: C (Relative humidity 30%)
Altitude (m) Ambient temperature (
0
C)
25 30 35 40 45
0 1 0.98 0.96 0.93 0.9
500 0.93 0.91 0.89 0.87 0.84
1000 0.87 0.85 0.82 0.87 0.78
2000 0.75 0.73 0.71 0.69 0.66
3000 0.64 0.62 0.6 0.58 0.56
4000 0.54 0.52 0.5 0.48 0.46
Note: When the relative humidity is 60%, the modified coefficient is C-0.01
When the relative humidity is 80%, the modified coefficient is C-0.02
When the relative humidity is 90%, the modified coefficient is C-0.03
When the relative humidity is 100%, the modified coefficient is C-0.04
Example:
When the rated power of generator is PN =5KW, altitude is 1000m, ambient temperature is 35 ,℃
relative humidity is 80%, the rated power of generator is:
P=PN ×(C-0.02) = 5 × (0.82-0.02) = 4KW
Ver. 3/Rev. 2; Data: 8.08.2022 51
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