Electrical Isolator Manufacturers in India – Transpower Switchgear Industries
Transpower Switchgear Industries is one of the leading electrical isolator manufacturers in India as well as prominent electrical isolator suppliers, exporters and traders in India, We are experts in manufacturing, supplying, and exporting top-quality electrical materials. Their products range from transformers to switchgear to street light poles, covering all electricity needs. When maintenance workers or engineers need to access electric equipment – a giant transformer in a power plant is needed.
Top Electrical Isolator Suppliers and Exporters in India
As leading electrical isolator suppliers in India, electrical isolator exporters in India it provides that added margin of safety by physically separating the conductors from one another, with absolutely no possibility of doubt that the circuit is broken. That guards against electrocution and equipment burning up from accidental short circuits.
Being as recommended electrical isolator suppliers in India. Thus, in practice, an electrical isolator is a safety-first device that provides a clear, physical indication that a section of an electrical installation is safely isolated, and work may be undertaken without the risk of electric shock. It's the assurance in the high-voltage world.
What is an Electrical Isolator?
An electrical isolator is a mechanical switch employed to disconnect a part of an electric circuit from the supply to create a visible gap indoor off load isolator horizontal that can be watched for safety reasons while carrying out the maintenance.
Types of Electrical Isolators
Being as electrical isolator manufacturers in India, there is different types as per maintenance and equipment’s requirement modified which are given below.
- Double Break Type Isolator: It has two contact breaks in each phase, and therefore the current path is interrupted at two points. Double Break Electrical Isolator is comparatively more compact in design than single-break types of the same voltage rating. It is used very widely in substations.
- Single Break Type Isolator: These have one contact break point for every phase. Single break electrical isolator is typically less sophisticated in design than double-break types. These are most likely to be employed where the space constraint is not very large in size.
- Pantograph Type Isolator: Electrical isolator exporters in India, it employs a pantograph mechanism for circuit opening and closing. It occupies very little operating space and is employed primarily in high-voltage substations where space factor is a factor. The motion is generally vertical.
- Bus Side Isolator: These are typically mounted on the busbar side of equipment like transformers or circuit breakers. These are used primarily to isolate the equipment from the primary busbar so that it can be maintained easily without de-energizing the bus.
- Line Side Isolator: These are mounted on the equipment's line side. These are utilized for isolating the equipment from the in-coming or out-going transmission/distribution lines for the sake of allowing safe working on the equipment that These are mounted on.
- Maintenance Isolator: As electrical isolator suppliers in India, it is not a special design but a function class. Maintenance isolators are installed in a system in which can be utilized to create safe isolation of portions or equipment for maintenance.
Technical Specifications
We have added below a technical sheet of electrical isolator in India that provides more technical information such as:
| Specification Category | Parameter | Value/Range | Notes |
|---|---|---|---|
| Electrical Ratings | Rated Voltage Ur | 72.5 kV, 145 kV, 245 kV Common | System's nominal operating voltage. |
| Rated Current Ir | 630 A, 1250 A, 2000 A Common | Continuous current carrying capacity. | |
| Short-Circuit Withstand Current Icw | 25 kA, 31.5 kA, 40 kA for 1 or 3 seconds | Ability to withstand fault currents for a specified duration. | |
| Peak Withstand Current Ip | Typically, 2.55×Icw | Maximum instantaneous current the isolator can withstand. | |
| Impulse Withstand Voltage Uimp | 350 kV, 650 kV, 1050 kV depending on Ur | Ability to withstand lightning and switching impulses. | |
| Power Frequency Withstand Voltage Uw | 140 kV, 275 kV, 460 kV depending on Ur | Ability to withstand sustained power frequency voltage. | |
| Mechanical Characteristics | Operating Mechanism | Motor-operated, Manual-operated | Type of drive used to open/close the isolator. |
| Operating Time Open/Close | 3-10 seconds motorized | Time taken for the isolator to fully open or close. | |
| Mechanical Endurance | Typically, 10,000 operations | Number of open-close cycles the isolator can perform without failure. | |
| Contact Material | Copper alloy with silver plating | Ensures good conductivity and prevents oxidation. | |
| Environmental | Ambient Temperature Range | -40°C to +55°C Typical | Operating temperature range. |
| Altitude | Up to 1000 m above sea level Standard | Standard operating altitude; derating may be required at higher altitudes. | |
| Standards | Compliance | IEC 62271-102, IEEE C37.32 Common | Relevant international or national standards the isolator complies with. |
| Auxiliary Contacts | Quantity & Rating | e.g., 4NO + 4NC, 10A at 250V AC/DC | For interlocking, indication, and control circuits. NO=Normally Open, NC=Normally Closed. |
| Insulation Material | Type | Porcelain, Composite Polymer | Material used for insulating components. |
Why to choose an Electrical Isolator?
Select an electrical isolator to ensure greater workers' safety during maintenance, create open visual separation from the circuit, and single equipment isolation without complete shutdown.
Benefits and Features of Electrical Isolator:
Serve as electrical isolator suppliers in India, different benefits are served as per system need and different potential level which are given below.
- Improved Safety: Electrical isolators create a physical circuit break, meaning the isolated equipment is physically separated from the live source. This significantly reduces the risk of electric shock while undertaking repair and maintenance work.
- Facility of Maintenance: Individual segments of a high voltage electrical isolator can be isolated, allowing safe and effective maintenance to be performed without requiring the whole installation to be taken offline.
- Fault Propagation Prevention: If a fault occurs in any component of the system, the faulty component can be isolated by an isolator instantly, preventing the fault from propagating to other healthy components of the electrical system.
- Clear Indication of Circuit Status: A closed or open status of an isolator provides a clear visual indication of whether the circuit is connected or disconnected. This clear status prevents unintentional energizing or working on live equipment.
- Voltage Isolation: Three-phase high voltage electrical isolators can sustain high voltage in the open position and also provide safe electrical isolation between system components at different levels of potential, ensuring safe working conditions for personnel on the isolated side.
Applications of Electrical Isolator:
As electrical isolator exporters in India, it is applicable in different systems, plants and centres as per maintenance which are given below.
- Substations: Isolators are extensively used in electrical substations to safely switch circuit breakers, transformers, and busbars for maintenance, repair, or replacement. They provide a method of disconnecting high-voltage equipment safely prior to working on it.
- Industrial Plants: Electrical isolators are used to isolate equipment, control panels, and circuits in industrial plants, allowing for safe maintenance and fault tracing without having to shut down the entire plant.
- Transmission and Distribution Systems: Four-pole isolators play an important role in transmission and distribution systems by allowing lines to be sectionalized for maintenance, fault isolation, and power re-routing. This makes the power grid more flexible and dependable.
- Renewable Energy Systems: Electrical isolators are applied in wind and solar systems to isolate wind turbines, solar panel arrays, and inverters for maintenance or emergency shutdown.
- Motor Control Centers (MCCs): In certain applications, electrical isolators are part of MCCs, providing a convenient and local means of isolating power to individual motor starters or sections of the control center for maintenance and inspection.
Transpower Switchgear Industries is the recommended electrical isolator manufacturers in India as well as notable electrical isolator traders, suppliers, exporters and service provider in India. Electrical isolators are safety-related electrical apparatus that function as protection equipment to ensure physical circuit isolation. Our indication of safe status, fault isolation, safety, and maintenance benefit render them of greatest utility in a wide variety of industrial and power plant facility applications. Loop powered signal Isolator do not break fault currents, but safe maintenance and operation. Contact us for more details.
FAQs:
To ensure safety by completely isolating electrical equipment from power, making it safe to work on.
High-voltage substations, power distribution, industrial plants – wherever safe isolation is needed.
Circuit breakers handle current interruption; isolators then provide a guaranteed physical disconnection for safety.
Always de-energize the circuit first, never operate under load, confirm visible gap, follow lockout/tagout.
