Three Phase Fully Controlled Thyristorized Bridge Converter with Triggering Circuit with Power Supply Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-12919
Indian Lab Suppliers supplies the Three Phase Fully Controlled Thyristorized Bridge Converter with Triggering Circuit with Power Supply (Product ID: 12919) as part of its electronics engineering lab equipment range. It is a line-commutated three-phase fully controlled six-thyristor bridge converter with its own triggering circuit.
Quick Answer
Three identical cards, one per phase, each with a zero-crossing detector, integrator, comparator and pulse generator, fire the positive group of thyristors, and a fourth card works with them to fire the negative group. A potentiometer sets the firing angle, and six driver circuits with pulse transformers give high-frequency gated gate pulses. Three 415:6 V transformers synchronise the triggering and three 415:50 V, 1 A transformers feed the bridge. Experiments cover control-signal generation, operation with R and R-L loads, and the effect of the freewheeling diode, with two 3½-digit panel meters for voltage and current. Supply is through a four-pole MCB and three-pole contactor. The unit works on 415 V three-phase mains: it must be earthed, wired by a qualified person and used under supervision, and waveforms should be viewed with isolated or differential oscilloscope probes rather than a floating oscilloscope.
Key Specifications
| Parameter | Detail |
|---|---|
| Converter | Three-phase fully controlled bridge, 6 thyristors, line commutated |
| Triggering | 3 phase cards (zero-crossing detector, integrator, comparator, pulse generator) plus 1 card for the negative group; firing-angle potentiometer |
| Drivers | 6 driver circuits with pulse transformers; high-frequency gated firing |
| Transformers | 3 × 415:6 V (trigger); 3 × 415:50 V, 1 A (power) |
| Control supplies | ±12 V DC, 500 mA and 5 V DC, 500 mA, IC regulated |
| Load | R and L with load voltage divider; freewheeling diode |
| Meters | 2 × 3½-digit DPM for voltage and current |
| Protection | 4-pole MCB; 3-pole contactor with push-to-ON; red, yellow and blue indicator lamps |
| Mains | 415 V three phase, 50 Hz |
Where This Is Used
Used with the Three Phase Half Controlled Thyristorized Bridge Converter with Triggering Circuit with Power Supply (Product ID: 12918) and the Three Phase Half Wave Rectifier with Power Supply (Product ID: 12917) to compare three-phase rectifier types. Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
What does the freewheeling diode change?
With an inductive load it stops the output voltage going negative and raises the average output.
How many thyristors are fired?
Six, in positive and negative groups.
What supply is required?
415 V three-phase, 50 Hz mains.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Engineering Lab Equipment
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