KGPS variable frequency power supply

(I) The dimension specifications of variable frequency power supply when the power is below 2000 KW:
The dimension of the housing of the variable frequency cabinet (mm): 2000 (height)×1600 (width)×850 (thickness)
The weight of the variable frequency cabinet: about 800 kg
The dimension specifications of variable frequency cabinet when the power is above 2000 KW (consisting of two parts):
The dimension of the housing of the variable frequency cabinet (mm): 2000 (height)×1600 (width)×850 (thickness)
The dimension of the switch cabinet of the variable frequency cabinet (mm): 2000 (height)×1000 (width)×850 (thickness)
Total weight of the variable frequency cabinet and the switch cabinet: about 1300 kg

(II) General Description of the Principle
Silicon controlled frequency conversion equipment is a frequency conversion equipment which uses the silicon controlled rectifier to converse the three phase regulated industrial frequency current in 50 weeks into intermediate and high frequency current with frequency of 300 HZ-8000 HZ. The operating principle is that the regulated industrial frequency alternating current of 50 weeks per second is rectified into direct current through a three-phase bridge rectification circuit, filtered by a filter, and finally the direct current is changed into the alternating current with certain frequency through an inverter to supply power for the load. Therefore, the inverter is actually an alternating current - direct current - alternating current converter.

(III) New Products Release

lConstant Power (Energy-saving type)

The intermediate frequency smelting furnace with constant power (energy-saving type) recently released by our factory got the universal reward from the customers after long-term production practice, now an improvement is made on the original basis for better performance.

<1> High melting rate. The power can be kept within the optimal frequency range during the melting process, which can eliminate the adverse effects of the new furnace lining to the melting rate to the maximum degree.

<2> The quality of the melting molten steel is high and the yield of the casting products is high.

<3> Power factor is high. The power factor can reach above 95% in the running period of the whole machine.

<4> No interference on the electric grid

<5> The power consumption is low, more than 10% of electricity can be saved.

<6> The success ratio of starting is high, it can reach 100% under any load condition.

<7> The master control board adopts the splicing interface, which is more convenient for repair.

<8> The inversion adopts the series connected silicon controlled rectifiers, which can ensure the damage rate of the silicon controlled rectifiers to be reduced to the minimum.

The series connected inverse transformation power supply in the market of our company is a high-efficiency frequency-converting device, which is applicable for heating, through heating, annealing of the component surface, quenching, elbow, melting and others. It has the advantages that:

<1> The current in the series connected inverse transformation circuit which flows through the inductor is almost active current, therefore, the direct current is minor, and the loss is less.

<2> The device can be easily started, and it is simple, convenient and reliable, suitable for occasions which requires frequent starting.

<3> The current can be naturally over-zero, the power supply is easy to be turned off, therefore, the working efficiency is high.

Technical Parameters of KGPS Series Variable Frequency Device (Symbol *” in the table indicates reference)