For enhanced operational safety, it is recommended that the rectifier input supply be connected through appropriate protective devices to ensure personnel safety and system protection during maintenance or fault conditions.

DC Output Control

The rectifier output control system is designed to regulate output voltage or current smoothly over the complete operating range by varying the input voltage to the main transformer primary.

The DC output voltage is controlled:

• Steplessly from 0–100%
• Through an ON LOAD Roller Type TM POWER Voltage Regulator
• With smooth and distortion-free voltage variation

This design ensures stable DC output with excellent waveform quality and high efficiency.

Advantages of TM POWER Roller Type Rectifier

Compared to Conventional & Thyristorised Rectifiers

1. No Waveform Distortion

In TM POWER Roller Type Rectifiers, the electrical waveform remains sinusoidal at all load conditions. When voltage is reduced, only the waveform magnitude decreases proportionally without distortion.

In conventional thyristorised rectifiers, waveform chopping occurs, causing distortion and harmonic generation.

2. High Power Factor

• TM POWER Roller Type Rectifier:
  • Power factor greater than 0.98
• Thyristorised Rectifier:
  • Lower power factor between 0.5 to 0.75

Higher power factor reduces electrical losses and improves system efficiency.

3. Simple and Reliable Construction

The roller type rectifier system is mechanically simple and easy to maintain. Routine servicing and repairs can often be carried out by standard maintenance personnel.

Thyristorised systems require specialized electronic engineers for troubleshooting and maintenance.

4. Low Maintenance Cost

• Minimal spare part requirement
• Low replacement cost
• Long operational life

Conventional electronic rectifiers generally involve higher maintenance and replacement expenses.

5. Heavy Duty Copper Construction

TM POWER Roller Type Rectifiers use:

• Copper sections approximately three times larger than conventional designs for the same current rating

This results in:

• Lower heating
• Better efficiency
• Longer service life
• Improved current carrying capability

6. Long Life Carbon Roller System

The carbon roller mechanism:

• Rolls smoothly over the coil
• Provides trouble-free operation
• Offers operational life exceeding 20 years

In conventional systems:

• Carbon brushes slide over the coil
• Wear out rapidly
• Require frequent replacement

7. Lower Overall Losses

The roller type design minimizes:

• Heat losses
• Harmonic losses
• Power losses

Resulting in improved efficiency and reduced operating costs.

Product Features

• Smooth stepless voltage control
• Distortion-free output waveform
• High efficiency operation
• High power factor
• Rugged industrial construction
• Long service life
• Low maintenance requirement
• Suitable for continuous duty operation
• Custom-built designs available
• Excellent overload capability

Applications

Suitable for:

• Electroplating plants
• Battery charging systems
• Anodizing plants
• Electrolysis processes
• Chemical industries
• DC motor testing
• Industrial process control
• Metal finishing industries
• Research laboratories
• Heavy engineering industries