Toyama TDWG12000CXE-N, Owner'S Manual

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2. Modified coefficient table of ambient condition power.
The conditions of generator rated output:
Altitude:
≤ 1000m / Ambient temperature: 5 ~ 25°C / Relative Humidity: 30 %
Ambient modified coefficient: C (Relative humidity 30%)
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
Counting example:
When the rated power of generator is P=5KW, altitude is 1000m, ambient temperature is 35°C,
relative humidity is 80%, the rated power of generator is:
P = Pn x (C-0.02) = 5 x (1.0
– 0.02) = 4.9 kW