3 tons of series induction melting furnace using energy-saving technology is an important part. Adopt the important way of energy saving through series frequency conversion, and realize energy saving through series frequency conversion .  

  Since the series inverter can be based on the actual need for induction melting furnaces the magnitude of power of real-time adjustment allows the induction melting furnace operation in the case of energy, reduce the power consumption of the light load running, the wide frequency range, high regulation accuracy, high operating efficiency , And can realize the soft start of the induction melting furnace , reduce the start-up impact, and reduce the overall power consumption of the induction melting furnace . This energy saving method has obvious energy saving effects. Generally, the power saving rate is 20% ~ 30% , and sometimes it can reach 30% and zui importantly: the shorter the payback period, will soon be able to recover the full investment.  

At present, domestic high-voltage series induction melting furnaces adopt dual rectification 12- pulse, 24- pulse frequency conversion technology, which has good output waveform and low harmonic pollution to the power grid. IF inverter technology is mature. 

The 3 ton series inverter inverter induction melting furnace is rectified into a single IF power supply ( 6- pulse IF power supply) and a dual rectifier power supply ( 12- pulse IF power supply) for series inverter operation. It is a series inverter thyristor intermediate frequency power supply technology, and the inverter resonance circuit is series resonance. The rectifier is powered by a 12- pulse SCR intermediate frequency power supply, which does not contain the 5th and 7th harmonic components. According to the harmonic analysis, the harmonic impact of the 12- pulse rectifier power supply is much smaller than that of a 6- pulse ordinary KGPS intermediate frequency power supply. The control system is fully digital, and the start-up success rate reaches 100% . High power factor operating characteristics, power factor is higher than 0.95 . efficient. The load is always full power output, effectively reducing the melting time.  

First, the main technical parameter configuration of 3 ton series induction melting furnace 

II . 3 tons series induction melting furnace main device functions, configuration and technical description:

. 1 , KYN28-12 type high-voltage cabinet (optional)

High-voltage cabinet is a hand-mounted switchgear

The high voltage cabinet is composed of VS1-12 vacuum circuit breaker, lightning arrester, high voltage isolating switch, voltage transformer, current transformer, transformer temperature display, and gas protection.

Equipped with time-sharing meters, power factor meters, voltmeters, and ammeters on the high voltage cabinet

2. Rectifier transformer (optional)

Rectifier transformer is used to reduce the primary high voltage to the input voltage suitable for intermediate frequency power supply. It uses a special high-impedance oil-immersed self-cooled rectifier transformer. S11 type high-performance three-phase oil-immersed distribution transformer 2000KVA

    This rectifier transformer generally adopts the Y / d11 , Y0 connection group mode. The secondary output is two sets, one of which is a Y -type connection, and the other output is a d11 -type connection. In this way, the phase of the two sets of outputs will be The difference of 30 ° from each other forms a 12- pulse rectification method. Compared with the six-pulse rectification, this rectification method can effectively suppress the 5th and 7th harmonics and reduce the interference of harmonic components on the power grid. Therefore, this rectifier transformer is used in large electric furnaces.

Parameters of 12- pulse rectifier power transformer:

Note: There should be no-load voltage regulating switch on the high voltage side of the transformer. The voltage can be adjusted in five steps: -10 %, -5 %, 0 , + 5 %, + 10 %.

3. 3 ton water-cooling equipment for series induction melting furnace : (optional)

HRBL-120T closed circulation cooling tower can also be purchased or built by yourself according to the situation .

You can build a pool at the production site and use a water pump to circulate the water to cool the 3 ton series induction melting furnace . You can also choose a complete set of combined cooling equipment. It is recommended to use HRBL-120T closed circulation cooling tower, which can save a lot of production area. The technical parameters of the circulating water cooling 3 ton series induction melting furnace are as follows:

http://www.songdaokeji.com/plus/list.php?tid=22