Three Phase Transformer With OLTC

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Product Details:

High Voltage 11 kV, 22 kV, 33 kV
Low Voltage 415 V / 433 V / 690 V
Capacity 1000 kVA to 10000 kVA
Load Loss As per IS standards (at full load)
Coil Material High-grade ETP Copper
Standard IS 2026, IEC 60076
Rated Voltage Up to 33 kV
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Three Phase Transformer With OLTC Price And Quantity

Minimum Order Quantity 1 Piece

Three Phase Transformer With OLTC Product Specifications

Rated Voltage Up to 33 kV
Standard IS 2026, IEC 60076
Coil Number Multiple Winding
Frequency (MHz) 50 Hz
Power Scope Upto 10 MVA and above
Material Copper Wound, CRGO Silicon Steel Core
Coil Material High-grade ETP Copper
Usage Industrial Power Distribution
Product Type Power Transformer with OLTC
Weight As per design (varies with capacity)
Cooling Type ONAN / ONAF (Oil Natural Air Natural / Oil Natural Air Forced)
Load Loss As per IS standards (at full load)
Coil Structure Toroidal
Voltage Booster Type On Load Tap Changer (OLTC)
Capacity 1000 kVA to 10000 kVA
Efficiency Above 98%
Low Voltage 415 V / 433 V / 690 V
High Voltage 11 kV, 22 kV, 33 kV
Operating Temperature -25C to +50C
Dimension (L*W*H) Depends on rating; custom engineered
Output Custom output as per rating
Phase Three Phase

Three Phase Transformer With OLTC Trade Information

Supply Ability 5 Piece Per Day
Delivery Time 1 Days

Product Description

Specification

Power	50MVA
Phase	3-Phase
Secondary Connection Type	Delta/Star
Voltage Ratio	11kV/433V
Cooling Type	Water Cooled
Brand	ABC Transformers
Input Frequency	50Hz
Minimum Order Quantity	1

Precision Voltage Regulation with OLTC

The OLTC-equipped transformer allows users to adjust output voltage seamlessly under load through a 10% range in 16 steps. This feature ensures stable voltage delivery, compensating for grid fluctuations and varying loads, which is critical for sensitive industrial operations and machinery protection.

Engineered for Enduring Reliability

With copper windings, CRGO silicon steel core, and insulation in Class F or H options, the transformer guarantees robustness and longevity. The advanced design includes a quality anti-corrosive surface coating, porcelain or epoxy bushings, and essential accessories for enhanced protection and monitoring.

Customizable and High-Efficiency Design

Tailored to client requirements, every unit offers flexibility in impedance (typically 4%-8%), output ratings, and physical dimensions. Oil-filled (mineral or eco-friendly) cooling ensures stable performance, while efficiency ratings exceed 98%, minimizing operational losses and energy costs.

FAQs of Three Phase Transformer With OLTC:

Q: How does the On Load Tap Changer (OLTC) function in this transformer?

A: The OLTC allows in-service voltage adjustments in 16 fine steps within a 10% range, ensuring stable output even during load variations. This helps maintain equipment performance and prolongs the lifespan of connected machinery by regulating voltage in real time.

Q: What specifications and standards does this transformer meet?

A: Our transformers comply with IS 2026 and IEC 60076 standards. They are available in capacities from 1000 kVA up to 10,000 kVA, rated for up to 33 kV, and offer insulation classes F or H, ensuring suitability for demanding industrial environments.

Q: When should clients choose Class F versus Class H insulation?

A: Class F insulation is suitable for applications with moderate thermal demands, whereas Class H is recommended for higher-temperature environments or when enhanced insulation life is required. The choice depends on your operational temperature profile and reliability needs.

Q: Where can this transformer be installed?

A: Primarily designed for industrial facilities, the unit supports installation at altitudes up to 1000 meters without derating. The durable, anti-corrosive surface coating and robust enclosure also make it suitable for diverse geographical and environmental conditions.

Q: What is the process for customizing the transformer to specific requirements?

A: Clients can specify parameters including capacity, impedance, vector group, voltage ratings, cooling type, bushings, and accessories. Our engineering team then designs and manufactures the transformer to align with these custom requirements, ensuring compatibility and peak performance.

Q: What are the main benefits of using this three phase transformer with OLTC?

A: Key benefits include precise voltage management, high operational efficiency (>98%), customizable features, advanced protective accessories, and compliance with leading industry standards. These advantages combine for reliable, cost-effective long-term operation in power distribution.

Q: How do the protection devices enhance transformer safety?

A: Integrated safety features like overcurrent protection, Buchholz relay, winding and oil temperature indicators, pressure relief devices, and advanced OLTC panels safeguard the transformer against electrical faults, overheating, and pressure overshoots, protecting both the equipment and operational continuity.

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