Manufacturer of Isolators / Stockiest of Over Head Line Materials / Govt Contractors.
The 33 kV 800A isolator with earth switch is a critical component in electrical power systems, designed to safely disconnect and ground electrical circuits for maintenance and protection. These isolators are essential in ensuring uninterrupted power transmission by providing a secure isolation mechanism for high-voltage networks.
Manufactured according to IEC 62271-102 international standards, these isolators are available with polymer and porcelain insulators, catering to diverse environmental and operational needs. MSEDCL-approved versions of these isolators are widely used in Indian power distribution projects, making them a preferred choice for both government and private sector applications.
An isolator in a substation is a mechanical switch used to completely disconnect a section of the electrical circuit when needed. It ensures the safety of personnel during maintenance and prevents accidental energization. Here’s why isolators are used in substations:
Balaji Enigneers Isolators Private Limited are manufacturing HV Isolator disconnectors with Brand Name “Balaji Engineers ” who cater their Isolator disconnector products in Pan India as well as export globally.
Isolators provide a visible break in the circuit, ensuring that the equipment is de-energized before maintenance work begins.
This prevents accidental electrocution or damage to equipment.
Isolators separate a portion of the substation (like transformers, circuit breakers, or busbars) from the live system.
They are mainly used in conjunction with circuit breakers to ensure a safe disconnection.
Unlike circuit breakers, isolators are designed to operate only when there is no load current.
They cannot interrupt fault currents but can safely isolate parts of the system after the circuit breaker has operated.
| Parameter | Specification |
|---|---|
| Rated Voltage | 33 kV |
| Rated Current | 800A |
| Rated Frequency | 50 Hz |
| Insulator Type | Polymer / Porcelain |
| Breaking Capacity | Not applicable (Non-load breaking) |
| Withstand Voltage (Impulse) | 170 kVp |
| Power Frequency Withstand Voltage | 70 kV (1 min) |
| Rated Short-time Withstand Current | 25 kA for 3 sec |
| Peak Withstand Current | 62.5 kA |
| Main Blade Type | Double break |
| Earth Switch Operation | Manual / Motorized |
| Applicable Standards | IEC 62271-102 :2018 |
| Mounting | Horizontal |
| Operating Mechanism | Manual / Motorized |
| Ambient Temperature | -5°C to +50°C |
| Application | Substations, Industrial, Solar, Wind, Hydro |
Voltage Rating 33 kV
Current Rating 800A
Compliance IEC 62271-102
Insulator Options: Available in polymer and porcelain
Operation: Manual and motorized options
ApplicationSuitable for substations, industrial, solar, wind, and hydroelectric projects
Type: Single break, double break, or pantograph-type disconnectors
SafetyIntegrated earth switch ensures enhanced grounding and operator safety
36 kV 800A isolators in both domestic and international markets are commnaly used for their isolation need in various substation specially Distribution network , Transmission network , Power generation substation .
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A 36kV, 800A isolator disconnector is used in electrical power systems, especially in substations, to ensure safe isolation of circuits and facilitate maintenance without affecting the entire network. Below are the key reasons why it is used:
Wind, Solar, and Hydro substations use 36kV isolators to isolate transformers, switchgear, or transmission lines.
Ensures easy maintenance of circuit breakers and transformers.
Installed on both sides of a 36kV circuit breaker in a substation.
Ensures complete de-energization before maintenance.
Prevents back-feed and enhances worker safety.
Often equipped with an Earth Switch to ground the disconnected section, preventing accidental voltage build-up.
Used in GIS & AIS substations for complete safety.
Designed to withstand short-circuit currents up to 25kA for 3 seconds.
Ensures system stability in case of faults.
Used as per IEC 62271-102 for isolators.
Ensures reliable performance in high-voltage applications.
An Earth Switch is used in an isolator disconnector for safety reasons, ensuring that the disconnected section of a power system is completely de-energized before maintenance or repairs. It prevents accidental re-energization and protects personnel from electrical hazards.
In high-voltage networks, inductive coupling from live lines can cause unexpected voltages in the isolated section.
An earth switch eliminates this risk by safely grounding the circuit.
The Earth Switch is interlocked with the main isolator to prevent closing the earth switch while the system is live.
This avoids dangerous short circuits.
Our in-house R&D team continuously innovates to provide cutting-edge disconnectors that enhance energy reliability.
Equipped with advanced testing and production facilities, we ensure every disconnector meets the highest quality benchmarks.
From customization to prompt after-sales service, we prioritize client satisfaction at every step.
Selecting a trusted 33 kV 800A isolator manufacturer ensures:
The 33 kV 800A isolator with earth switch is a vital component in power transmission and distribution networks. Whether for MSEDCL-approved projects in India or exports to international markets, selecting an IEC 62271-102 compliant manufacturer guarantees superior quality, safety, and efficiency.
For businesses seeking reliable 33 kV isolators, partnering with leading manufacturers ensures long-term success in the global power sector. Investing in high-quality isolators supports a stable, efficient, and sustainable energy infrastructure worldwide.
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Société Nationale de l'Électricité et du Gaz (Sonelgaz), Egyptian Electricity Holding Company (EEHC), General Electricity Company of Libya (GECOL), Office National de l'Électricité et de l'Eau Potable (ONEE), Société Tunisienne de l'Électricité et du Gaz (STEG), Electricity Company of Ghana (ECG), Nigerian Electricity Supply Corporation (NESCO), Société Nationale d'Électricité du Sénégal (SENELEC), Compagnie Ivoirienne d'Électricité (CIE), Eneo Cameroon S.A. (ENEO), Société Nationale d'Électricité (SNEL), Société d’Énergie et d’Eau du Gabon (SEEG), Société Nationale d'Électricité (SNE), Kenya Power and Lighting Company (KPLC), Ethiopian Electric Power (EEP), Tanzania Electric Supply Company Limited (TANESCO), Uganda Electricity Transmission Company Limited (UETCL), Eskom Holdings SOC Ltd, Zambia Electricity Supply Corporation Limited (ZESCO), Zimbabwe Electricity Supply Authority (ZESA), Electricidade de Moçambique (EDM).State Grid Corporation of China (SGCC), China Southern Power Grid (CSG), Tokyo Electric Power Company (TEPCO), Kansai Electric Power Company (KEPCO), Korea Electric Power Corporation (KEPCO), Taiwan Power Company (Taipower), Perusahaan Listrik Negara (PLN), Tenaga Nasional Berhad (TNB), Electricity Generating Authority of Thailand (EGAT), Metropolitan Electricity Authority (MEA), Provincial Electricity Authority (PEA), Vietnam Electricity (EVN), National Power Corporation (NPC), Meralco, National Thermal Power Corporation (NTPC), Power Grid Corporation of India, State Electricity Boards (SEBs), Water and Power Development Authority (WAPDA), Karachi Electric (KE), Bangladesh Power Development Board (BPDB), Dhaka Electric Supply Company (DESCO), Kazakhstan Electricity Grid Operating Company (KEGOC), Uzbekenergo.
