HEATEX ELECTRICALS PRIVATE LIMITED

SF-6 Interrupter Pole

Rated Voltage- 12KV

Rated Current- 1250/2500/3150A

Rated Frequency- 50Hz

Rated Short Time Withstand Current- 40KA

Rated Duration of Short Circuit- 3sec

Rated SF6 gas pressure at 20 deg C- 2.5bar

Operational Features :

1) During breaking of the contacts, the puff of gas extinguishes the arc when the circuit breaker is in the closed position.

2) Due to movement of the piston, the gas is compressed. Firstly, the main contacts open and then the arcing contacts break the contact so as to maintain a long life for the main contacts.

3) Due to this action, the compressed gas is released and it extinguishes the arc.

Rated Voltage- 12/24/36KV

Rated Current- 1250A

Rated Frequency- 50Hz

Rated Short Time Withstand Current- 25KA

Rated Duration of Short Circuit- 3sec

Rated SF6 gas pressure at 20 deg C- 1.5bar

Operational Features :

During breaking of the contacts, the puff of gas extinguishes the arc when the circuit breaker is in the closed position.

Due to movement of the piston, the gas is compressed. Firstly, the main contacts open and then the arcing contacts break the contact so as maintain a long life for the main contacts.

Due to this action, the compressed gas is released and it extinguishes the arc Valve opening during the closing operation, helps the piston to move swiftly.

The Operating Mechanism for SF6 breakers (FG2/FB4, VOLTAS make) is designed for high-voltage applications, supporting rated voltage up to 72 kV and rated current up to 6000 A.

It is compatible with various circuit breakers, including Air-blast, Air, Minimum Oil, SF6, and Vacuum types.

The mechanism features a simple, compact, and homogenous construction for efficient operation.

Made from electrolytic-grade copper and silver-plated (6 microns, customizable), it ensures superior conductivity and durability.

This operating mechanism is engineered to provide reliable performance in SF6 circuit breakers and other breaker types, ensuring long-term service and dependable circuit protection.

High-Performance Low Voltage Operating Mechanism for Circuit Protection Systems

Our state-of-the-art low voltage operating mechanism is meticulously engineered to meet the diverse needs of both domestic and export markets. Designed for circuit breakers typically operating within the 230V to 600V range, this mechanism delivers robust, reliable, and efficient performance, ensuring optimal electrical safety across a wide array of applications—from residential and commercial installations to light industrial settings.

Superior Design and Construction

Precision Engineering:

Crafted with high-quality electrolytic-grade copper and enhanced with a customizable silver plating finish (standard 6 microns), the mechanism provides outstanding conductivity and superior resistance to corrosion. This ensures not only minimal electrical losses but also prolonged operational life with reduced maintenance needs.

The Single Phase Pole for Air Circuit Breaker is a robust, high-performance solution designed for applications requiring current ratings from 630A to 3200A and operating voltages between 415V and 600V. Engineered to meet the rigorous demands of industrial and commercial installations, this pole is constructed with premium materials that ensure superior electrical conductivity and excellent thermal stability. Its streamlined, compact design not only optimizes available space but also facilitates seamless integration into existing systems. The air circuit breaker configuration delivers precise fault detection and rapid interruption, effectively protecting the network from overloads and short circuits. Built for durability and longevity, this pole minimizes downtime and maintenance requirements while consistently delivering safe, reliable performance even in demanding environments. Overall, it offers an ideal blend of efficiency, resilience, and high-standard protection for modern low-voltage distribution systems.

The arc chamber in an air circuit breaker operating between 440V & 600V is a critical component designed to manage and extinguish the electrical arc formed during circuit interruption. Constructed from high-conductivity electrolytic-grade copper with customizable silver plating, the arc chamber offers exceptional durability and efficient thermal dissipation. Its precision-engineered internal baffles and optimized geometry facilitate rapid arc quenching by redirecting and cooling the arc plasma, thereby reducing energy transfer and preventing re-ignition. This controlled arc interruption safeguards the breaker’s contacts and insulation from excessive thermal and mechanical stress. Additionally, the chamber’s robust design minimizes erosion and prolongs service life under repetitive fault conditions. By ensuring reliable arc management, the arc chamber contributes to enhanced overall performance, safety, and longevity of the air circuit breaker in demanding industrial and commercial applications. Its innovative design not only meets stringent industry standards but also supports sustainable operation and system resilience consistently.

**Signal Box for Outdoor Isolator/Disconnector Switch (Voltage >66KV)**

**Technical Specifications:**

- **Voltage Rating:** Suitable for systems above 66KV.

- **Operation:** Manual with optional remote control.

- **Enclosure:** IP65/IP66-rated, weather-resistant metal housing.

- **Construction:** Corrosion-resistant materials for extended outdoor use.

- **Temperature Range:** Operates reliably from -40°C to +60°C.

- **Standards:** Compliant with IEC and ANSI specifications.

- **Indicators:** Integrated LED and analog status displays for clear open/closed state.

**Datasheet Overview:**

- **Inputs:** High-voltage and control signal interfaces.

- **Outputs:** Status signaling for remote monitoring.

- **Communication:** Optional RS485/Modbus integration.

- **Installation:** Designed for simple field mounting with clear wiring diagrams.

- **Maintenance:** Low-maintenance design ensuring long-term reliability.

The closing and opening springs are used in 11kV/33kV circuit breakers with ratings up to 72 kV and 6000 A, offering short-circuit making capacities of 40 kA (11 kV) and 26 kA (33 kV). Made from electrolytic grade copper and silver-plated (6 microns, customizable), these springs are designed for various circuit breakers, including Air-blast, Air, Minimum Oil, SF6, and Vacuum types. Their simple, compact, and homogenous construction ensures reliable performance. The silver plating enhances durability and reduces wear, ensuring efficient operation and long life across a range of electrical distribution systems and high-voltage applications.

These insulators are designed for 11kV/33kV circuit breakers, supporting rated voltage up to 72 kV and rated current up to 6000 A, with short-circuit making capacities of 40 kA (11 kV) and 26 kA (33 kV).

They are compatible with various circuit breakers, including Air-blast, Air, Minimum Oil, SF6, and Vacuum types. Constructed from electrolytic-grade copper and silver-plated (6 microns, customizable), these insulators feature a simple, compact, and homogenous design for efficient electrical isolation.

Their durable construction ensures reliable performance in high-voltage applications, providing excellent electrical insulation and long-lasting service in demanding environments.

Fixed and Moving contact assemblies for applications from 415V to 66KV 

Rated Voltage  : upto 72 kV 

Rated Current  :upto 6000 A 

used for different Circuit Breakers of various makes which are simple, compact and homogenous in construction.

Raw material used is Copper (Electrolytic grade) and silver plated ( 6 micron - standard and can be modified as per client specification).

The different breakers where in they can be used are Air-blast Circuit Breaker, Air Circuit Breaker, Minimum Oil Circuit Breaker, SF6 Circuit Breaker and Vacuum Circuit Breaker.

Gearbox assembly 11KV / 33KV application used for different Circuit Breakers of various makes which are simple, compact and homogenous in construction.

The different breakers where in they can be used are Air-blast Circuit Breaker, Air Circuit Breaker, Minimum Oil Circuit Breaker, SF6 Circuit Breaker and Vacuum Circuit Breaker.

Gear box assembly typically is a simple but very important part of the operating mechanism of a circuit breaker. We specialise in producing custom built Gear box assemblies for different makes and different requirements as per clients.

Latch for circuit breaker 11KV / 33KV, STC 40KA / 26KA

Rated Voltage : upto 72 kV

Rated Current :upto 6000 A

used for different Circuit Breakers of various makes which are simple, compact and homogenous in construction.

The different breakers where in they can be used are Air-blast Circuit Breaker, Air Circuit Breaker, Minimum Oil Circuit Breaker, SF6 Circuit Breaker and Vacuum Circuit Breaker.

Latch mechanism is also called as "latch", "latch box", "latch box assembly", "latch mechanism assembly", "lock and hold assembly", "trip latch mechanism assembly".

Trip Latch / Close Latch Assembly for Circuit Breakers (Up to 36kV)

The trip latch/close latch assembly is a critical component in circuit breakers, ensuring precise and reliable switching operations. Designed for Air-blast, Air, Minimum Oil, SF₆, and Vacuum Circuit Breakers, it offers a compact, uniform, and durable construction suitable for various manufacturers. The trip latch enables secure tripping during fault conditions, protecting electrical systems, while the close latch ensures smooth re-engagement for uninterrupted power distribution. Built for high mechanical strength and longevity, it withstands demanding operational conditions, minimizing maintenance needs. Its simple and efficient design enhances breaker performance, making it an ideal choice for medium-voltage power systems up to 36kV. 

EHV Current Transformers (CTs) up to 220kV are essential components in high-voltage power systems, used for accurate current measurement, protection, and metering.

Designed for voltages ranging from 110kV to 220kV, these CTs provide crucial data for system monitoring and fault detection.

They are constructed with high-quality silicon steel or amorphous steel cores to ensure efficient current measurement with minimal losses. EHV CTs are available with accuracy classes such as 5P for protection and 0.1S for metering.

These transformers also feature high-grade insulation to withstand high-voltage and surge conditions.

They are widely used in substations, transmission lines, and power plants to safeguard equipment and maintain system reliability.

With proper matching of burden to protection relays, EHV CTs ensure accurate data for both protection and metering applications, contributing to the safe operation of electrical networks and power distribution systems.

EHV Potential Transformers (PTs) up to 220kV are critical components used in high-voltage power systems for accurate voltage measurement and protection. These transformers step down high voltages to manageable levels for metering, monitoring, and protection equipment.

Key Features:

Voltage Class: Typically designed for systems operating up to 220kV.

Accuracy Class: Available in different accuracy classes like 0.1 for precise voltage measurement and metering.

Core Material: Usually made from high-quality silicon steel to ensure low core losses and efficient voltage transformation.

Insulation: High dielectric strength insulation to withstand operational and surge voltages, ensuring safety and durability.

LT Resin Cast Current Transformers (CTs) up to 1.1kV are designed for accurate current measurement, protection, and metering in low-voltage systems. Featuring a resin-cast construction, these CTs provide high insulation strength and protection against environmental factors. Rated for voltages up to 1.1kV, they offer high accuracy in classes like 5P (protection) and 0.5S (metering). With a silicon steel core, they ensure minimal core losses and efficient operation. Ideal for industrial, commercial, and residential applications, LT Resin Cast CTs ensure safe and reliable performance in low-voltage distribution and metering systems.

LT Tape Wound Current Transformers (CTs) up to 11kV are used for accurate current measurement, protection, and metering in low-voltage systems. Designed for voltages up to 11kV, these CTs feature a tape-wound construction for enhanced mechanical strength and thermal performance. They are made with high-quality silicon steel cores and high dielectric strength insulation for safety and reliability. Available in accuracy classes like 5P (protection) and 0.5S (metering), they provide precise current data. Commonly used in industrial distribution systems, energy metering, and protection relays, these CTs ensure safe and efficient operation of electrical systems.

MV Resin Cast Potential Transformers (PTs) up to 33kV are designed for accurate voltage measurement and protection in medium-voltage systems. Featuring resin-cast construction, these PTs offer high insulation strength, mechanical durability, and resistance to environmental factors. Rated for voltages up to 33kV, they provide precise measurements for metering and protection applications with high accuracy (e.g., 0.1, 0.2). Constructed with silicon steel cores, they ensure efficient performance with low energy loss. These PTs are ideal for use in substations, transmission and distribution networks, and power plants, ensuring safe operation and accurate voltage monitoring.

### **Technical Data Sheet: Power Contacts for Outdoor Isolator/Disconnector Switch (>66KV)**

#### **Product Overview:**

The power contacts for outdoor isolator/disconnector switches ensure reliable current conduction and minimal contact resistance in high-voltage applications above 66KV. Engineered for superior electrical performance, these contacts withstand extreme environmental conditions while maintaining durability and efficiency.

#### **Technical Specifications:**

- **Voltage Rating:** Suitable for systems above 66KV

- **Current Capacity:** Up to 4000A (customizable)

- **Material:** High-conductivity electrolytic copper with silver/tin plating

- **Contact Resistance:** ≤ 30 µΩ for optimal efficiency

- **Operating Temperature:** -40°C to +85°C

- **Mechanical Durability:** >10,000 operation cycles

- **Surface Treatment:** Corrosion-resistant plating for extended lifespan

- **Standards Compliance:** IEC 62271-102 / ANSI C37.30

#### **Applications:**

- High-voltage substations

- Power transmission and distribution networks

- Renewable energy systems

These power contacts ensure robust electrical performance, longevity, and minimal maintenance requirements.

Electro-Pneumatic Drive for 220/132KV Isolator

Technical Description:

The electro-pneumatic drive for 220/132KV isolators is an advanced actuator system designed to provide efficient and reliable operation in high-voltage switchgear applications. Combining electrical control with pneumatic actuation, this drive ensures smooth, precise, and rapid isolator operation while minimizing mechanical wear and maintenance. It is equipped with high-performance solenoid valves, pressure regulators, and a fail-safe mechanism to ensure secure isolation under all operating conditions. Built for harsh outdoor environments, it features a weatherproof enclosure, corrosion-resistant components, and compliance with IEC and ANSI standards.

Voltage Rating:220KV / 132KV

Control System: Electro-pneumatic with solenoid valve actuation

Operating Pressure: 6 - 10 bar

Response Time:<1 second

Enclosure Protection:IP65/IP66-rated weatherproof housing

Mechanical Endurance: >10,000 operations

Operating Temperature: -40°C to +60°C

Fail-Safe Feature:Spring return mechanism for emergency operation

Standards: IEC 62271-102, ANSI C37.30

The Vacuum Interrupter is a crucial component used in various high-voltage circuit breakers, such as Vacuum Circuit Breakers (VCBs), designed to interrupt the flow of current and protect electrical systems from faults.

Rated Voltage: Typically, up to 72 kV.

Rated Current: Up to 6000 A.

Application: Used in Air-blast, Air, Minimum Oil, SF6, and Vacuum circuit breakers.

Material: Usually made of electrolytic-grade copper and silver-plated contacts (6 microns, customizable) for optimal conductivity and durability.

Function: It extinguishes the arc within the vacuum chamber, providing high reliability and long service life, even in harsh operating environments.

These interrupters are essential for safe and efficient operation in various industrial and power distribution systems, ensuring high-performance circuit protection.

Resin Cast Current Transformers (CTs) up to 33 kV

Our Resin Cast Current Transformers (CTs) are engineered for medium voltage applications up to 33 kV, offering precise current measurement and protection in electrical systems. Encapsulated in high-quality resin, these CTs provide superior insulation and resistance to environmental factors like moisture and dust, ensuring reliable operation even in harsh conditions. Their compact and robust design makes them ideal for installation in confined spaces. With high accuracy classes (0.2S, 0.5S, 1.0), these CTs deliver accurate current readings for effective system monitoring and protection. Perfect for use in substations, industrial plants, and distribution networks, these maintenance-free transformers are durable, offering long-lasting performance with minimal maintenance needs.

Resin Cast Voltage Transformers (VTs) up to 1.1 kV

Our Resin Cast Voltage Transformers (VTs) are designed for low voltage (LT) applications up to 1.1 kV, providing precise voltage measurement and reliable protection for electrical systems. These VTs are fully encapsulated in high-quality resin, offering exceptional insulation and protection against environmental factors such as moisture, dust, and temperature variations. Their rugged construction ensures optimal performance in harsh and demanding environments, while maintaining compact size for easy installation in space-limited areas.