РУС / ENG

Power sources

 

Rectifier for plasma spraying “VPN-650”

Appointment

Rectifier “VPN-650” is designed to power the  plasma spraying plants. It is made by scheme of the thyristor rectifier with water cooling. Power part of the power source is made on the basis of the transformer with water cooling system, thus ensuring compactness, size and weight reduction. A smoothing choke provides filtering of ripple DC.


Structurally, the control system of rectifier “VPN-650” is the storage cartridge with the set of modules that are implemented on modern element base.
 

Module of the pulse shaper provides a pulse-phase control of thyristor rectifier. In the pulse formation relies a principle of the comparison of the power network synchronized sawtooth voltage with a control DC voltage. If changing the value of the control voltage, the phase of the control pulse varies relative to the voltage of the supply network.

Advantages of the model:


- quick disconnection when over-current or over-voltage;
- ease of maintenance;
- ease of phasing of the source at first turn on;
- ease of interfacing with the central control devices.


Назад

Specifications
Rated rectified current at duty cycle=100% and cycle time of 60 minutes, A
 1 stage
 2 stage
650
400
Adjustment range of the load current, A
 1 stage
 2 stage
50-650
80-400
Open circuit voltage of power rectifier, V
 1 stage
 2 stage
170±5%
270±5%
Open circuit voltage of the excitation source, V
 1 stage
 2 stage
200±5%
300±5%
Rectified current of the excitation source, A
 1 stage
 2 stage
50±20%
80±20%
Rated load voltage, V
 1 stage
 2 stage
70±10%
120±10%