Transformer Rectifier Set
RDSO / Spec No.
IRS: S: 91/2014
Application
Indian Railways (S&T Sector) - Railway Signalling Power Supply Installations
Product Specifications & Details
The Transformer Rectifier Set manufactured by General Auto Electric Corporation (GAEC) is engineered for heavy-duty DC power requirements across Indian Railways signalling networks. Fully compliant and approved under RDSO Specification No. IRS: S: 91/2014 (Lucknow), this unit integrates a full-wave bridge rectifier with a low-ripple filter circuit (`< 5% RMS`). Featuring off-load input/output voltage selection, digital metering, HRC fuse protection, and customizable rating options, it ensures consistent, highly reliable DC output in rugged railroad environments.
Key System Features
- Full Wave Bridge Rectifier: Integrated with advanced filter circuit for smooth DC output.
- Low Ripple Output: Maintains low ripple content (`< 5% RMS`) for sensitive signalling circuits.
- Flexible Tappings: Off-load input and output voltage selection switches.
- Digital Metering: Integrated digital voltage and current display meters.
- Dual Protection: HRC fuses placed at both input and output terminals.
- RDSO Approved & Customizable: Fully certified under RDSO Lucknow; user specifications can be accommodated.
Technical Specifications Table
| Parameter | Specification Standard |
|---|---|
| Nominal Input Voltage & Freq | 230V AC [110V AC Option] | 50 Hz ± 2% |
| OFF Load Taps | 200, 210, 220 V ±1.5% [90, 95, 100 V] |
| Nominal Output Voltage | 12V, 24V, 60V, 110V DC (or as specified by customer) |
| Output Voltage Settings | Suitable tapping on Transformer (15V, 28V, 65V, 130V respectively) |
| Rated Output Current | Nominally 5A, 10A, 15A, 20A, 30A, 40A, 50A, 60A, 80A |
| Output Ripple & No Load Current | < 5% RMS Ripple | No Load Current < 10% of Max Rated Input Current |
| Unit Regulation | <30% for 4 to 12V | <20% for 15V to 35V | <10% for 60 to 130V |
| Efficiency & Temp Rise | > 55% (< 500VA) / > 65% (> 500VA) | Temp Rise < 55°C above ambient |
| Insulation & Dielectric Strength | 2 kV RMS for 1 min | Insulation Resistance > 10 MΩ | Class “B” Insulation |
Ordering Code Format: TR.AAABB.CC
Structure your ordering code using: TR.[Output Voltage][Current Rating].[Input Code]
- AAA (Nominal Output):
024for 24V DC |110for 110V DC - BB (Current Rating):
05for 5Amp |40for 40Amp - CC (Nominal Input):
01for 110V Input | Leave blank for standard 230V Input - Example:
TR.02420(230V AC to 24V DC, 20A) |TR.02420.01(110V AC to 24V DC, 20A)
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