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3.最佳效率焊机运行电能损耗费用与有效材料重量的关系曲线f_(pt)=φ_t[ma xη(G)](图7) 焊机运行时本身都有电能损耗,运行时电能损耗又与使用时间有关,使用的时间长,电能消耗则大。显然焊机运行时电能损耗是焊机效率和焊机寿命的函数。我国交流弧焊机的使用寿命及耗能按成都电焊机研究所推荐的数据及方法,以平均寿命为12.5年来计算,则每年损耗电能为: W=F_P·F_S×0.75×8×305度/年(33) 式中 F_P:为焊机功率损耗之和,千瓦 F_S:额定负载持续率,取F_S=0
3. The best efficiency Welder running electric energy loss and effective material weight of the relationship between the curve f_ (pt) = φ_t [ma xη (G)] (Figure 7) Welder operation itself has power loss, power loss And the use of time-related, using a long time, power consumption is large. It is obvious that the loss of electric energy when the welding machine is running is a function of the efficiency of the welding machine and the life of the welding machine. China AC arc welding machine life and energy consumption by the Chengdu Institute of welding data and methods recommended to the average life expectancy of 12.5 years to calculate, then the annual loss of electricity as follows: W = F_P · F_S × 0.75 × 8 × 305 degrees / Year (33) where F_P: is the sum of the power loss of the welding machine, kW F_S: rated load sustained rate, take F_S = 0