B The main technical parameters and features medium frequency power supply:

Power supply rated output power: 1500 KW;                                        

1   Medium frequency power supply from the main circuit to control circuit, is to use an adaptive digital control circuit, All control circuit for the three-phase bridge rectifier part, inverting part is parallel inverter, inverter Power rating from 5% - 100% range stepless adjustable.

2   Starting with reliable performance, No matter any artifacts in the inductor it can start reliably

3   Has a good stable performance. Current device used for the inner ring and intermediate frequency voltage for outer ring of the closed-loop system. When the input voltage fluctuations in the plus or minus 10%, stable output voltage accuracy + / - 1%, Thus ensure the consistency of the steel temperature inside the inductor during the heating process.

4    Has overcurrent, overvoltage, water pressure, the fuse are short etc, multiple protection, Effectively protect the safety of power electronic devices.

6   The inward lines without the phase sequence and no polarity outgoing requirements. Starting is zero voltage starting, no current shock.

C  Environment and working conditions

1  Environmental factors

Indoor temperature: top 40 ℃, 5 ℃ lowest; Air humidity: 98% or less (no frost);

2  Cooling water quality: life used tap water.

3  Within 20 days after the contract signing, the pipe bending machine foundation drawings supplied by the supplier.

4  Cooling water circulates, The buyer is responsible for the configuration of cooling water system. Water pressure shall be 0.25 Mpa or higher.

5  AC 380 v power connected to the distribution box for the pipe bending machne, total power is no less than 1500KVA.

6  hydraulic oil:45 # anti-wear hydraulic oil, Filter and aced on a regular basis.