Three Phase Fully Controlled Thyristorized Bridge Converter
Product Code : JA-PET-1443
The three phase fully controlled bridge converter trainer is a line-commutated six-thyristor bridge with its own triggering circuit. Cards with zero crossing detector, integrator, comparator and pulse generator set the firing angles of the positive and negative thyristor groups, and R and L loads, a freewheel diode and two 3½ digit panel meters are built in; the unit runs on 415 V, 50 Hz three phase mains (SKU JA-PET-1443).
Specifications
Listed parts and ratings of the three phase converter:
| Product | Three Phase Fully Controlled Thyristorized Bridge Converter |
| SKU | JA-PET-1443 |
| Converter | Three phase, line-commutated, fully controlled thyristor bridge |
| Mains switching | 3-pole power contactor with AC coil and push-to-ON switch; 4-pole MCB |
| Triggering cards | Three identical cards (zero crossing detector, integrator, comparator, pulse generator), one per phase, for the positive group; a further card for the negative group |
| Firing control | Firing angle potentiometer |
| Transformers | Three 415:6 V for the triggering AC supply; three 415:50 V, 1 A for rectification |
| Regulated supplies | ±12 V and 5 V at 500 mA, IC regulated, for the triggering circuits |
| Drivers | Six driver circuits with pulse transformers; high-frequency gated dual-gate firing, 6 nos. |
| Load | R and L load with load voltage divider; one freewheel diode |
| Meters | Two 3½ digit digital panel meters for voltage and current |
| CRO sockets | Unearthed mains sockets |
| Indicators | Three jewel lights: red, yellow and blue |
| Operating supply | Three phase 415 V, 50 Hz AC mains |
| Patch cords | 4 mm stackable spring-loaded plugs, 0.5 m |
| Weight | 15 kg approx. |
| Dimensions | W 445 x H 260 x D 470 mm |
| Other apparatus required | Dual trace CRO 20 MHz (unearthed) |
Experiments on the three phase converter
The listed studies are:
- Nature and generation of the control signal for a three phase full-wave controlled rectifier
- Operation of the three phase fully controlled bridge rectifier with R load
- Operation of the bridge rectifier with R-L load
- Effect of the freewheeling diode on the output waveform
Scope of supply and ordering
The listing covers the three phase converter unit with its triggering cards, R and L loads, panel meters, patch cords and operating instructions, supplied by JaincoLab; a 415 V three phase supply is needed. The quotation states the packing, the lead time and the number of units.
Frequently asked questions
How are the thyristor firing angles controlled?
Three identical cards, one per phase, with zero crossing detector, integrator, comparator and pulse generator control the positive group; a fourth card works with them for the negative group, and a potentiometer sets the firing angle.
Which loads are provided?
An R and L load with a load voltage divider, plus one freewheel diode for studying its effect on the output waveform.
What supply and instruments are needed?
Three phase 415 V, 50 Hz mains and a dual trace 20 MHz oscilloscope; unearthed mains sockets for the CRO are on the unit.
Related products
- Three Phase Half Controlled Thyristorized Bridge Converter
- Three Phase Full Wave Rectifier
- Single Phase Fully Controlled Bridge Converter
- Single Phase Half Controlled Symmetrical
More items of this type are listed in the power electronics trainers range.
Request a quote
To order the Three Phase Fully Controlled Thyristorized Bridge Converter, send the SKU JA-PET-1443, the quantity and the delivery destination through the JaincoLab contact page. Institutions and contractors buying under a tender can also reach us via the tenders page.
