The parallel 3 ton induction melting furnace is a classic parallel frequency conversion control method. This medium frequency inverter method has superior performance, high cost performance, and obvious energy saving effect. It is an energy saving control method widely used in domestic large and medium electric furnaces. The classic parallel frequency conversion energy saving summarizes three major advantages in practical applications: one is to reduce power consumption, reduce costs, and save energy; the second is to expand the inverter range of the system and improve the flexibility of the system operation; the third is to change the induction melting The furnace startup method truly realizes the soft start of induction melting furnaces , greatly reduces the impact on the induction melting furnaces , prolongs their service life, and greatly saves the maintenance costs of these equipments. It is an effective type of current induction melting furnaces .调 控制。 Tune control.

Technical parameters and equipment configuration of 3 ton parallel induction melting furnace for ordinary classic line

Function, configuration and technical description of 3 ton induction melting furnace :

1. KYN28-12 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 adopts a special high-impedance oil-immersed self-cooling 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 A 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 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 water to cool the 3 ton 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 induction melting furnace are as follows: