HT AVR Manufacturers are companies that design and produce High Tension Automatic Voltage Regulators (HT AVR). These devices are used to automatically regulate and stabilize voltage levels in high voltage (HT) electrical systems—typically ranging from 11 kV to 33 kV—to ensure a constant and safe output voltage.

What is HT AVR?

HT AVR (High Tension Automatic Voltage Regulator) is an electrical device used in power distribution networks to:

Maintain constant voltage at the desired level.
Protect electrical equipment from over-voltage, under-voltage, and voltage fluctuations.
Improve power factor and system reliability.
Increase the lifespan of transformers and motors.

Where is HT AVR used?

HT AVRs are widely used in:

Power generation and transmission utilities
Large manufacturing industries
Commercial complexes
Hospitals and research labs
Data centers

Key Features of HT AVR:

Works on high voltage input, such as 11kV or 33kV.
Provides regulated output, usually 400V or 415V.
Uses On Load Tap Changer (OLTC) or servo-controlled mechanisms.
Often combined with HT transformers.

Examples of HT AVR Manufacturers in India (some serve Patna, Bihar):

Servokon Systems Ltd.
Mahendra Transformers Pvt. Ltd.
Purevolt Products Pvt. Ltd.
Unitech Systems
Power Engineers Company

Types of HT AVR Manufacturers

HT AVR (High Tension Automatic Voltage Regulator) manufacturers can be categorized based on the type of voltage regulation technology, application, and product configuration they provide. Here’s a breakdown of the main types of HT AVR manufacturers:

1. Based on Voltage Regulation Mechanism

a. Servo-Controlled HT AVR Manufacturers

Use servo motors to adjust voltage.
Provide smooth and precise voltage correction.
Slower response but highly accurate.
Example: Servokon Systems Ltd.

b. Static HT AVR Manufacturers

Use electronic circuits (thyristors/IGBTs) for fast voltage regulation.
Faster response time than servo-based systems.
Suitable for critical loads (e.g., data centers, hospitals).
Example: Purevolt Products Pvt. Ltd.

c. OLTC-Based HT AVR Manufacturers (On Load Tap Changer)

Integrated with an OLTC transformer to adjust taps and control voltage.
Commonly used in high-capacity industrial plants.
Example: Mahendra Transformers Pvt. Ltd.

2. Based on Application Type

a. Industrial HT AVR Manufacturers

Focused on manufacturing AVRs for:
- Cement plants
- Textile mills
- Steel and manufacturing units
- Power utilities

b. Commercial HT AVR Manufacturers

Supply AVRs for:
- Shopping malls
- Hospitals
- Educational institutions
- Commercial complexes

3. Based on Configuration

a. Outdoor Type HT AVR Manufacturers

Build weather-proof, oil-cooled regulators for outdoor installation.
Typically used by power transmission companies.

b. Indoor Type HT AVR Manufacturers

Produce compact, dry-type voltage regulators suitable for indoor setups.

4. Based on Voltage Capacity

11 kV HT AVR Manufacturers
22 kV HT AVR Manufacturers
33 kV HT AVR Manufacturers

Popular HT AVR Manufacturers in India

Servokon Systems Ltd.
Mahendra Transformers Pvt. Ltd.
Unitech Systems
Purevolt Products Pvt. Ltd.
Power Engineers Company
Bluebird Power Controls

Top HT AVR Manufacturers in India

1. Indian Servo Controls (Haryana)

- Specializes in: Servo-controlled and HT voltage stabilizers, OLTC transformers.
- Strengths: Custom solutions, pan-India presence, large capacities (up to 5000 kVA+).
- Website: https://indianservocontrols.in/

2. Purevolt Products Pvt. Ltd. (New Delhi)

- Specializes in: HT and LT AVRs, isolation transformers, and servo stabilizers.
- Strengths: Export-oriented, ISO-certified, wide range of voltages.
- Website: purevolt.in

3. Power Engineers Company (Yamunanagar, Haryana)

- Specializes in: HT AVRs with OLTC, distribution transformers.
- Strengths: BIS-certified, custom-built transformers and voltage regulators.
- Website: powerengineers.co.in

4. VOLTAMP Transformers Ltd. (Vadodara, Gujarat)

- Specializes in: Power transformers, distribution transformers, HT AVRs.
- Strengths: High-quality manufacturing, used in power utilities and industries.
- Website: voltamptransformers.com

5. Unitech Power Systems (Pune)

- Specializes in: HT AVR systems, energy-saving transformers, servo stabilizers.
- Strengths: Industrial and commercial voltage regulation solutions.
- Website: unitechpowersystems.com

6. Trutech Products (Pune)

- Specializes in: HT AVR, isolation transformers, step-up/down transformers.
- Strengths: Rapid production, bulk orders, exports to Gulf and Africa.
- Website: trutech.co.in

7. Jyoti Ltd. (Vadodara, Gujarat)

Specializes in: Power systems, HT AVRs, switchgear.
Strengths: Decades of experience, government & utility projects.
Website: jyoti.com

Tips When Choosing a Manufacturer:

Ask for BIS, ISO, and CE certifications
Ensure they offer after-sales service
Look for customization options for your load type and voltage range
Prefer OLTC-based AVRs for high-capacity industrial needs

Indian Servo Controls Transformer Products

Distribution Transformer

Rating: upto 5MVA
Voltage Class: 11KV-33KV/433V
Oil Cooled
Off Load Transformer’

OLTC Distribution Transformer

Rating: upto 5MVA
Voltage Class: 11KV-33KV/433V
Oil Cooled
On Load Transformer

Furnace Transformer

Rating: upto 3000KVA
Oil Cooled

Solar Transformer

Rating: upto 5MVA
Oil Cooled

Power Transformer

Rating: upto 5MVA
Voltage Class: 11KV-33KV
Oil Cooled
On Load Transformer
Off Load Transformer

HT AVR (Servo Stabilizer)

Rating: upto 3MVA
Oil Cooled

Indian Servo Controls Servo Stabilizer Products

Servo Stabilizer (Balance Type – I)

Rating: (25-100)KVA
Oil Cooled
Rolling contact Servo Stabilizer
Micro based controller

Servo Stabilizer (Balance Type – II)

Rating: (100-500)KVA
Oil Cooled
Rolling contact Servo Stabilizer

Servo Stabilizer

Rating: (500-3000)KVA
Oil Cooled
Rolling contact Servo Stabilizer

Servo Stabilizer (Unbalanced)

Rating: (25-2000)KVA
Oil Cooled
Rolling contact Servo Stabilizer
Micro based controller

Rolling types Servo voltage stabilizer

Indian Servo Controls Rectifier Products

Silicon Power Rectifier

Voltage: 08V / 12V/ 16V / 20V / 24V / 30V
Load Ampere: upto 10000Amp.
Oil Cooled
Rolling contact

Silicon Power Rectifier

Voltage: 08V / 12V/ 16V / 20V / 24V / 30V
Load Ampere: upto 10000Amp.
Oil Cooled
Rolling contact

Best HT AVR Manufacturers Company in Patna, Bihar

Mahendra Transformers Pvt. Ltd.

Overview: An ISO 9001:2015 certified company, Mahendra Transformers specializes in manufacturing HT-AVR systems designed to overcome and control voltage fluctuations due to diverse loading duties and line losses in transmission and distribution networks.
Product Features:
- Compact design with minimum power losses.
- Better efficiency and low maintenance.
- Operates on-load directly on the HT line, providing stabilized HT output voltage of ±1%, resulting in constant LT output.
Website: mahendratransformers.com

Servokon Systems Ltd.

Overview: Established in 1990, Servokon is a leading manufacturer and supplier of power conditioning equipment and transformers in India. They offer a wide range of products, including HT AVR systems.
Product Features:
- Precision-engineered HT Servo Stabilizers operating “on-load” directly on the HT line, providing stabilized HT voltage output with ±1% accuracy.
- Innovative transformers with built-in AVR, combining HT AVR and standard distribution transformer functionalities.
- Capacity ranging from 100 KVA to 10 MVA, suitable for voltage classes of 6.6kV, 11kV, 22kV, and 33kV.
Website: servokon.com

Top 5 HT AVR Manufacturers in Patna, Bihar

1. Indian Servo Controls

Location: Patna, Bihar
Overview: Reliable Power Systems offers a range of HT AVRs, including models up to 15,000 KVA in 11 & 33 KV classes. Their products feature stepless linear rolling contact mechanisms and are designed for continuous duty cycles. Indinaservocontrols

2. Dynamic Energy

Location: Patna, Bihar
Overview: Dynamic Energy specializes in HT AVRs that stabilize voltage on 11KV, 22KV, or 33KV sides before the distribution transformer. Their products ensure stabilized LT output within ±1% accuracy. dynamicenergy.in+1reliable.net.in+1

3. Aditya Powers & Controls

Location: Patna, Bihar
Overview: Aditya Powers & Controls manufactures various electrical equipment, including HT voltage stabilizers and HT transformers with built-in AVRs. They cater to clients across Delhi, Gurgaon, Lucknow UP, and other regions. adityapowers.in

4. Surya Electro Controls

Location: Patna, Bihar
Overview: Established in 1990, Surya Electro Controls is a leading manufacturer of LT and HT servo voltage stabilizers. Their HT AVRs are designed to filter voltage fluctuations before feeding power to transformers, ensuring optimal performance. suryaec.in

5. Mahendra Transformers Pvt. Ltd.

Location: Patna, Bihar
Overview: Mahendra Transformers offers HT-AVR transformers known for compact design, better efficiency, and long service life. Their products are designed to stabilize low input ranges in high ratings.

FAQs: HT AVR Manufacturers

1. What is an HT AVR?

An HT AVR (High Tension Automatic Voltage Regulator) is a device used to stabilize the input voltage before it reaches the transformer in high-voltage (HT) power systems (typically 11kV or 33kV). It ensures a constant output voltage, protecting equipment from fluctuations.

2. Why is an HT AVR important for industries?

HT AVRs protect industrial machinery from over-voltage and under-voltage damage, improve power factor, reduce electricity bills, and extend equipment life by maintaining stable voltage levels.

3. How do I choose the right HT AVR manufacturer?

Look for:

- Proven experience and certifications (ISO, BIS)
- Ability to customize solutions for your load and voltage
- Strong after-sales support and AMC services
- Positive customer reviews and references

4. What are the typical ratings of HT AVRs available?

HT AVRs are available in voltage classes like:

- 11 kV / 433 V
- 22 kV / 433 V
- 33 kV / 433 V And in capacities from 100 kVA to 10,000+ kVA or higher, depending on industrial demand.

5. Do HT AVR manufacturers offer on-site installation?

Yes. Most reputable HT AVR manufacturers offer on-site installation, testing, and commissioning, especially for large industrial or commercial setups.

6. What is the difference between HT AVR and LT AVR?

- HT AVR is used on the high voltage side (11kV/33kV).
- LT AVR is used on the low voltage side (400V/230V).
  HT AVRs are suitable for large-scale industrial power systems, whereas LT AVRs are used in smaller commercial/residential applications.

7. Can HT AVR manufacturers provide remote monitoring or IoT-enabled systems?

Yes. Many modern manufacturers provide SCADA-compatible or IoT-enabled AVRs that allow remote monitoring and control for performance optimization and predictive maintenance.

8. How long is the warranty offered by HT AVR manufacturers?

Warranties typically range from 12 to 36 months, depending on the manufacturer and product. Some may offer extended warranty or AMC (Annual Maintenance Contract) packages.

9. Are HT AVRs customizable?

Yes. Most reputable manufacturers offer custom-designed HT AVRs based on:

- Input/output voltage
- Load capacity
- Environmental conditions (e.g., humidity, temperature)
- Site constraints

10. Who are the top HT AVR manufacturers in India?

Some well-known manufacturers include:

Reliable Power Systems (Lucknow UP)
Dynamic Energy (Lucknow UP)
Servomax Limited (Hyderabad)
Purevolt Products Pvt. Ltd. (New Delhi)
Power Engineers Company (Yamunanagar)

HT AVR manufacturer keyword

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Commercial Keywords:

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Branded Keywords (if you have a company name):

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