12kV Air Insulated Medium Voltage (MV) Switchgear (AIS) is a metal-enclosed switchgear assembly used in medium-voltage power distribution systems. It utilizes air as the primary insulation medium between energized conductors and grounded metal enclosures, while vacuum circuit breakers (VCBs) are commonly used for switching and fault interruption. The equipment provides s...
36kV Gas Insulated Ring Main Unit (RMU) is a compact, metal-enclosed medium-voltage switchgear designed for 36kV (40.5kV maximum system voltage) distribution networks. It integrates switching, protection, isolation, and control functions within a sealed gas-insulated enclosure. The primary live parts are housed in a stainless-steel tank filled with SF6 gas or environment...
24kV Gas Insulated Ring Main Unit (RMU) is a factory-assembled, metal-enclosed medium-voltage switchgear designed for 24kV distribution networks. It provides reliable switching, protection, sectionalizing, and fault isolation while maintaining uninterrupted power supply to healthy sections of the network. The primary live components are enclosed in a sealed stainless-ste...
12kV Gas Insulated Ring Main Unit (RMU) is a compact, factory-assembled medium-voltage switchgear used in secondary power distribution networks. It is designed to provide switching, protection, isolation, and sectionalizing of 12kV distribution feeders while ensuring high reliability and minimal maintenance. All energized components are enclosed in a sealed gas-insulated...
1. General Description 36kV Gas Insulated Medium Voltage Switchgear (C-GIS), also known as Compact Gas Insulated Switchgear, is a medium-voltage metal-enclosed switchgear system designed for 30kV/33kV/36kV distribution and sub-transmission networks. C-GIS uses a sealed gas-insulated enclosure to protect primary components such as the vacuum circuit breaker (VCB), busba...
1. General Description 24kV Gas Insulated Medium Voltage Switchgear (C-GIS), also known as Compact Gas Insulated Switchgear, is a medium-voltage metal-enclosed switchgear system designed for 20kV/22kV/24kV distribution networks. C-GIS combines gas insulation technology with vacuum circuit breaker (VCB) interruption technology to provide a compact, reliable, and environ...
1. General Description 12kV Gas Insulated Medium Voltage Switchgear (C-GIS), also known as Compact Gas Insulated Switchgear, is a medium-voltage metal-enclosed switchgear system designed for distribution networks. It uses a gas-insulated compartment structure to provide reliable insulation and arc protection while maintaining a compact footprint. Unlike conventional Ai...
1. General Description 362kV Hybrid Gas Insulated Switchgear (HGIS) is an extra-high-voltage switching system that combines the advantages of Gas Insulated Switchgear (GIS) and Air Insulated Switchgear (AIS) for high-capacity transmission networks. The HGIS design integrates major primary equipment—including the circuit breaker, disconnectors, earthing switches, curren...
1. General Description 170kV Hybrid Gas Insulated Switchgear (HGIS) is an extra-high-voltage switching system that combines the compact design of Gas Insulated Switchgear (GIS) with the flexibility and lower cost of Air Insulated Switchgear (AIS). The primary switching equipment—such as the circuit breaker, disconnectors, earthing switches, current transformers (CT), a...
1. General Description 126kV Hybrid Gas Insulated Switchgear (HGIS) is an extra-high-voltage switching system that combines the compactness and reliability of Gas Insulated Switchgear (GIS) with the flexibility and lower cost of Air Insulated Switchgear (AIS). The main switching equipment—including the circuit breaker, disconnectors, earthing switches, current transfor...
1. General Description 72.5kV Gas Insulated Switchgear (GIS) with Vacuum Interrupter is a compact high-voltage switching system that uses vacuum circuit breaker technology for arc interruption while using an insulating gas medium (such as SF6 or environmentally friendly gas) for insulation of the GIS compartments. Unlike traditional SF6 circuit breakers, the vacuum int...
245kV Gas Insulated Switchgear (GIS) is an extra-high-voltage switchgear system designed for 220kV class transmission networks. It uses SF6 gas or environmentally friendly alternative insulating gases as the insulation medium and integrates high-voltage primary equipment—including circuit breakers, disconnectors, earthing switches, current transformers, voltage transform...
145kV Gas Insulated Switchgear (GIS) is a high-voltage switchgear system used in 132/138kV class transmission networks. It uses SF6 gas or alternative environmentally friendly insulating gases as the insulation medium and combines major high-voltage equipment—including circuit breakers, disconnectors, earthing switches, current transformers, voltage transformers, and bus...
Glass Disc Insulator, also known as a Toughened Glass Suspension Insulator or Glass Cap-and-Pin Insulator, is a high-voltage insulator used for overhead transmission and distribution lines to electrically isolate conductors from towers and support structures while withstanding mechanical tensile loads. It is manufactured from toughened (tempered) glass, combined with me...
Porcelain Station Post Insulator, also known as a Pedestal Insulator or Substation Post Insulator, is a high-voltage electrical insulation component used in outdoor substations and switchyards to support and electrically isolate busbars, disconnectors, circuit breakers, instrument transformers, and other high-voltage equipment from grounded structures. It is manufacture...
Porcelain Housing Arrester, also known as a Porcelain Surge Arrester or Porcelain Metal Oxide Surge Arrester (MOA), is a protective device used in electrical power systems to protect transformers, switchgear, transmission lines, and other high-voltage equipment from lightning surges and switching overvoltages. It uses zinc oxide (ZnO) metal oxide varistor (MOV) elements...
24kV Outdoor Voltage Transformer (VT), also known as an Outdoor Potential Transformer (PT), is an instrument transformer designed to accurately step down medium-voltage system voltages up to 24 kV into standardized low-voltage outputs for metering, protection, monitoring, and control. It is engineered for outdoor service with weather-resistant insulation and housing, ens...
24kV Indoor Voltage Transformer (VT), also known as an Indoor Potential Transformer (PT), is an instrument transformer designed to step down medium-voltage system voltages up to 24 kV into standardized low voltages for metering, protection, monitoring, and control. These transformers are commonly installed in indoor metal-clad switchgear, Ring Main Units (RMUs), and medi...
362kV Capacitor Voltage Transformer (CVT), also known as a Capacitive Voltage Transformer or Capacitor Potential Transformer (CPT), is an extra-high-voltage (EHV) instrument transformer designed for 330kV-class transmission systems. It reduces high transmission voltages to standardized low-voltage outputs used for metering, protection, control, synchronization, and power...
123kV Capacitor Voltage Transformer (CVT), also called a Capacitive Voltage Transformer or Capacitor Potential Transformer (CPT), is a high-voltage instrument transformer used in 110kV-class transmission systems to reduce high system voltages to standardized low-voltage outputs for metering, protection, control, synchronization, and automation applications. A CVT uses a...
123kV Inductive Voltage Transformer (IVT), also known as a Potential Transformer (PT) or Voltage Transformer (VT), is a high-voltage instrument transformer designed to accurately reduce transmission system voltages up to 123 kV to standardized low-voltage outputs for metering, protection, monitoring, and control. It provides galvanic isolation between the high-voltage ne...
24 kV Current Transformer (Outdoor Type) is a medium-voltage instrument transformer designed for 24 kV power systems, typically used on 22 kV distribution networks. It is installed in outdoor substations, pole-mounted structures, and open-air switchyards to measure high primary current and convert it into a standardized secondary current (usually 1 A or 5 A) for metering...
Bushing Current Transformer (BCT) is a type of current transformer installed around the bushing of a power transformer, circuit breaker, or switchgear. It is designed to measure current or provide protection signals by using the existing high-voltage bushing as the primary conductor. Unlike standalone CTs, a BCT does not require a separate primary structure. Instead, it...
24 kV Current Transformer (Indoor Type) is a medium-voltage instrument transformer designed for 24 kV power systems, commonly used on 22 kV and 20 kV distribution networks. It accurately converts high primary current into a standardized secondary current (typically 1 A or 5 A) for metering, protection, monitoring, and control while providing complete electrical isolation...
12 kV Current Transformer (Indoor Type) is a medium-voltage instrument transformer designed for 12 kV power systems (typically used on 11 kV distribution networks). It accurately converts high primary current into a standardized secondary current (typically 1 A or 5 A) for metering, protection, monitoring, and control while providing complete electrical isolation between...
245 kV Current Transformer (Top-core Type) is an extra-high-voltage (EHV) outdoor instrument transformer designed for 245 kV systems, commonly used on 220 kV transmission networks. It accurately converts high primary current into a standardized secondary current (typically 1 A or 5 A) for metering, protection, monitoring, and control while providing complete electrical i...
145 kV Current Transformer (Top-core Type) is a high-voltage outdoor instrument transformer designed for 145 kV systems, typically used on 132 kV transmission networks. It converts high primary current into a standardized secondary current (typically 1 A or 5 A) for metering, protection, monitoring, and control while providing complete electrical isolation between the hi...
36 kV Current Transformer (Top-core Type) is a medium-voltage outdoor instrument transformer designed for power systems with a rated voltage of 36 kV (typically used on 33 kV networks). It measures high primary current and converts it into a standardized secondary current (typically 1 A or 5 A) for metering, protection, and control while providing electrical isolation be...
362 kV Current Transformer (Hair-pin Type) is an extra-high-voltage (EHV) instrument transformer designed to accurately transform high primary currents into standardized low secondary currents (typically 1 A or 5 A) for metering, protection, and monitoring in 362 kV substations. The "hair-pin" designation refers to the primary conductor configuration, where a U-shaped (h...
145 kV Current Transformer (Hair-pin Type) is a high-voltage outdoor instrument transformer used in 132 kV and 145 kV air-insulated substations (AIS). It accurately converts high primary currents into standardized secondary currents (1 A or 5 A) for protective relays, energy metering, fault recording, and substation automation. The hair-pin type features an integral U-sh...
36 kV Current Transformer (Hair-pin Type) is a medium-voltage instrument transformer designed to measure high primary currents and provide scaled, isolated current signals for metering, protection, and control. The term "hair-pin type" refers to the shape of the primary conductor, which is bent like a hairpin (U-shaped), forming an integral primary winding through the tr...
Semi-Pantograph Disconnector (Semi-Pantograph Isolator) is a high-voltage disconnector used in air-insulated substations (AIS) to provide visible electrical isolation of transmission equipment. It combines features of a conventional disconnector and a pantograph mechanism, making it particularly suitable for substations with restricted space or where equipment is mounted...
Automatic Circuit Breaker (Recloser), commonly known as a Recloser or Automatic Circuit Recloser (ACR), is an intelligent medium-voltage switching device that automatically interrupts fault current and then attempts to restore power by reclosing after a preset time delay. It is designed to clear temporary (transient) faults—such as those caused by lightning, tree branche...
Outdoor Vacuum Circuit Breaker (Dog-house) is a medium-voltage outdoor circuit breaker in which one or more vacuum interrupters are enclosed within a weatherproof metal housing, commonly called a dog-house because of its distinctive roofed enclosure. The housing protects the interrupters, operating mechanism, and control equipment from rain, dust, sunlight, ice, and othe...
Energy Storage System (BESS – Battery Energy Storage System) A Battery Energy Storage System (BESS) is an energy storage solution that stores electrical energy in batteries and releases it when required. It enables better integration of renewable energy, improves grid stability, provides backup power, and supports peak-load management. A typical BESS installation combi...
MV Transformer Station (Medium Voltage Transformer Station) A Medium Voltage Transformer Station (MV Transformer Station), also called a Medium Voltage Substation, Compact Substation, or MV/LV Distribution Substation, is an electrical facility that receives medium-voltage power, transforms it to low voltage, and distributes electricity to end users or industrial loads. ...
