Shanghai Ito Power Generator Three Voltage Adjustment Methods

Shanghai Ito Power Generator Three Voltage Adjustment Methods

Adjust the voltage value, adjust the potentiometer RP1, and adjust the generator terminal voltage within ±5%UN. If a remote control voltage setting potentiometer is connected, adjust the potentiometer to the middle position and adjust the RP1 again. Make the terminal voltage rating. At this time, adjust the remote control potentiometer to adjust the terminal voltage of the generator within ±5% of the rated voltage range.

Stable adjustment

When the generator is unloaded, slowly rotate the RP2 counterclockwise until the voltmeter hands slightly shake. Then rotate the RP2 clockwise to stabilize the terminal voltage. This should be a stable point. The integral capacitor can also be adjusted to increase the stability. When K1 is pulled to "ON", the integral is increased, and with the adjustment of RP2, a stable state can be obtained. Switch K1 has four gears, and fourth gear is neutral. At the factory, the K1 switch is generally pulled out in the first gear.

Adjustment of load buffer frequency (lowest frequency setting)

When the generator speed is at a predetermined value, the voltage will suddenly drop from the rated value to about 85% of the rated voltage. The frequency at this point is called the inflection point of the frequency. When the product is delivered, the 60 Hz and 50 Hz generators will Inflection point high speed to 57.5 Hz and 47.5 Hz, the adjustment steps are:

60 Hz generator turn adjustment, close K2 (pull to "ON"), the unit frequency rises to 60 Hz, the generator voltage is high speed to the rated value, then slowly reduce the unit speed, make the frequency drop to 57.5 Hz, adjust at this time Potentiometer RP5, so that the terminal voltage suddenly drops, and then RP4, so that the generator terminal voltage suddenly drops, and then adjust the RP4, so that the generator terminal voltage is 85% UN, adjusted potentiometer RP5 should not move.

Adjust the 50 Hz generator inflection point, disconnect K2, slowly reduce the speed of the unit, reduce the frequency to 47.5 Hz, adjust the generator voltage to the rated value, and then adjust RP3 so that the voltage suddenly drops, and then adjust RP4 again. The generator terminal voltage is 85% UN. After adjustment, the positions of RP3, RP4, and RP5 are marked and cannot be moved again.

Parallel operation adjustment

Put the generator on the rated load (COS φ = 0.8 lag), then the generator terminal voltage should drop, adjust the potentiometer adjustment, so that the generator terminal voltage is lower than the no-load terminal voltage (3 ~ 5)% UN ( According to need). If the generator terminal voltage rises during the load increase process, the two ends of the secondary current transformer should be adjusted to switch positions.

When two generator sets are operated in parallel, the external characteristics of the two sets should be adjusted to be basically the same, that is, when the rated load is applied, the terminal voltage is reduced to 3% UN.

Related reading :

Shanghai Ito Power Co., Ltd. Main : Ito Gasoline Generator , Ito Diesel Generator , Ito Small Pump , Ito Digital Generator , Ito Electric Welding Machine