Three Phase Firing Circuit for 3 Phase AC Voltage Controller Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12805
Indian Lab Suppliers supplies the Three Phase Firing Circuit for 3 Phase AC Voltage Controller (Product ID: 12805) as part of its electronics engineering lab equipment range. It studies the three-phase firing circuit for a three-phase AC voltage controller without neutral connection, and its operation with a resistive load.
Quick Answer
Each phase has an identical firing card with zero-crossing detector, integrator, comparator and pulse generator, so the pulses stay locked to their own phase while one potentiometer sets a common firing angle. High-frequency gated firing and three driver circuits with pulse transformers deliver isolated gate pulses. Power is taken through three 415:50 V, 0.2 A transformers into a built-in three-phase resistive load, and two 3½-digit panel meters read AC voltage up to 200 V. The board has ±12 V, 100 mA triggering supplies, a three-pole MCB and phase indicators, and runs from 415 V AC, 50 Hz. Please confirm the thyristor/diode arrangement of the power stage at quotation. Use an earthed supply and qualified supervision; a 20 MHz dual-trace oscilloscope is needed.
Key Specifications
| Parameter | Detail |
|---|---|
| Experiments | Three-phase firing circuit; three-phase AC voltage controller (no neutral) with resistive load |
| Firing | 3 identical cards: zero-crossing detector, integrator, comparator, pulse generator; high-frequency gated firing; 3 pulse-transformer drivers |
| Transformers | 3 × 415:50 V, 0.2 A; 6 V AC for triggering |
| Supplies | ±12 V DC, 100 mA |
| Load | Built-in three-phase resistive load |
| Meters | 2 × 3½-digit DPM, 0–200 V AC |
| Mains | 415 V AC, 50 Hz; 3-pole MCB; phase indicators |
| Board | W 415 × H 165 × D 315 mm, about 8 kg |
| Accessories | 20 patch cords, 4 mm, 50 cm; 20 MHz dual-trace oscilloscope needed (not included) |
Where This Is Used
Used before or alongside the Three Phase Full Wave AC Voltage Controller (Product ID: 12803) and the Three Phase Half Wave AC Voltage Controller (Product ID: 12802) in power-electronics labs. Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
Why one firing card per phase?
Each card synchronises to its own phase through a zero-crossing detector.
What does high-frequency gated firing do?
It sends a burst of pulses through the pulse transformer so the thyristor turns on reliably.
What load is fitted?
A built-in three-phase resistive load.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Engineering Lab Equipment
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