OLTC

On-Load Tap Changer | PATENT NO:-417583 UPTO YEAR 2037

Sturdy Volt On-Load Tap Changers (OLTCs): Powering Reliable Voltage Regulation

On-Load Tap Changers (OLTCs) are critical components used across a wide range of applications—including power transformers in electrical networks, industrial facilities, substation transformers, and distribution systems—where precise voltage regulation is essential under varying load conditions.

OLTCs regulate a transformer’s output voltage by adjusting the tap position, thereby changing the winding turn ratio. This functionality is crucial for maintaining stable voltage delivery, especially as transformer loads fluctuate.

At Sturdy Volt, we recognize the power industry’s pivotal role in shaping a more productive and sustainable future. Our OLTCs are synonymous with quality and reliability, reflecting our commitment to innovation and excellence.

Our OLTCs are designed for regulating the output voltage of Power, Distribution, and Furnace Transformers up to 33 kVA.

At Sturdy Volt, our contribution to this evolving market is backed by continuous in-house R&D and high-grade manufacturing processes. We take pride in producing our OLTCs entirely in-house, ensuring top-tier quality and performance in every product.

Model 11 kV (oil cooled) 22 kV (oil cooled) 33 kV (oil cooled)
200A 200A 200A
9 Position Linear
17 Position Linear
17 Position Non Linear

17 POSITION NON-LINEAR OLTC

  • New Design
  • Optimized Tank Weight
  • Easy Maintained
  • Modular Compact in Size
  • Fully Connected OLTC
  • Surge relay
  • With AVR also available

17 POSITION LINEAR OLTC

  • Low Welding Joints (Aesthetic appeal, high quality)
  • Supply of Surge Relay Pipes. (No Need of Buying)
  • Barrier Board to Transformer Connection, Nuts & Bolts are Supplied. (No Need to Buying)
  • Door Lock Arrangement (complete Protection for Miss handling)
  • Quick Delivery
  • Surge relay
  • With AVR also available

9 POSITION LINEAR OLTC

  • Small in Size
  • Reduced Weight
  • Economical & Compact design
  • Low Chance of Error Highly Reliable
  • Easier Assembly
  • Surge relay
  • With AVR also available

TESTING

  • Make before Break Verified Test Graph by Using Omicron
  • Successfully Tested for 5,00,000 Mechanical Operations
  • Leakage Test for 8 hours
  • Pressure Test Done at 0.8 MM for 1 hour
  • Contact Resistance Test
  • Electrical circuit 2kv Test
  • High Voltage Test

SPL TESTS FOR OLTC

  • Dynamic Short Circuit Test
  • Lightning Impulse test
  • Power Frequency Voltage Withstand Test
  • Over Run Test
  • Ingression Test

SERVICING

Organizing an on-load tap-changer service is challenge. With our on-load tap changer expertise we offer you the all-round carefree OLTC full service.

  • Economical AMC Available
  • Break down repair in less than 4 hours
  • Easy to Replace the Spares on site
  • Inspection & Monitoring for Our Products
  • Complete restoration of the systems
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