الوصف

Technical Parameters

Output power: Pout?*00kW

Designed frequency: f=*00~**0KHZ 

Designed parameters

l Nominal power: *00kW

l Rated DC power: Pd=**0kW


l Rated DC voltage: UdN=**0V

l Rated DC current: IdN=**0A

l The whole efficiency: η≥*5%

l Pout >*00kw

l MOSFET inverter: *0kW×2

l Tank circuit output mode: no welding transformer output, 

secondary resonance

Power distribution requirements

l Nominal power: *00kW

l Rated DC power: Pd=**0kW

l Line-in power factor: COSφ≥0.*5

l Power distribution capacity: S≤**0kVA

l Power supply voltage: *-phase *80V/50Hz (equipment could 

work at the voltage **0V±*0%)

l Line-in current: I=**0 A

l Line-in cable: each phase adopts **5mm2 copper cable, *-phase 

*-line

1. composition

The whole set of high frequency solid state welder is composed of

switch rectifying cabinet,  inverter  output cabinet,

central control console,mechanical adjusting equipment,

water cooling system and an air conditioner.
 
Switch Rectifying Cabinet

We integrate the switch gear cabinet part and rectifier part, besides the

functions of switch cabinet, this design also has rectifying control functions

on solid-state H.F. welders.

Install incoming disconnect switch ,incoming current meter, voltage

meter(switchable)and incoming voltage indicating light.

Install *-phase full-controllable thyristor rectifying bridge to achieve power

regulation of H.F. welders.

Install flight wave reactor, flight capacitor and filter to increase flight

coefficient.
 
 
 
Invert output cabinet

The invert part is considered of MOSFET single phase invert bridge in parallel

style. Each bridge’s design power is **0 KW/*0KW. We adopt building block mode

to pile up power, it is very convenient to install and maintain because every

single bridge board is designed as drawer structure consisted of slideway.

We adopt matching transformer to realize power combination, also we adopt sub-

resonance, no-welding transformer output mode and make resonance directly by

tank resonance capacitor(low voltage)and inductor to achieve steel pipe welding

power transmission by output lead.

Use sealed box and install overhead air conditioning.
 
 
 
Central console

The console achieves remote control and power regulation of solid-state H.F. welder,

installed with LCD; also it has indicators of armature voltage, field voltage on DC speed

regulation cabinet and indicators of DC voltage, DC current on welder. Installation of

power-speed closed loop control function is optional. The console has design

difference according to different types and quantities of matching DC speed regulation

cabinet.
 
 
 
Mechanical adjusting equipment

*-D adjustable bracket: for induction welding mode, applied with installation and

adjustment of invert output cabinet, the inductor position can be adjusted manually.

*-D adjustable bracket: for induction/contract welding mode, applied with installation

and adjustment of inverter output cabinet, the inductor position can be adjusted by

electric or manual.
 
 
 
Circulation soft water cooling system (water-water cooler)

The water -water cooling system is composed of heat exchanger with the adoption

of the special corrugated structure which makes the soft water form sharp

turbulent flow in order to strengthen heat exchange. The system holds the

advantage of compact design, small area occupation, convenient dismounting and

high efficiency of heat exchange. Only with the ability of heat exchange but

not cooling, it is necessary to use external circulation system to accomplish

the heat exchange.
 
2. Maindesign indext of solid-state H.F. welder