OLTC Spares
Showing 25–36 of 36 results
-
NGEF Transformer selector swicth
NGEF Transformer selector switch assembly
NGEF Selector Switch Assembly – Product Description
The NGEF Selector Switch Assembly is an essential part of the On-Load Tap Changer (OLTC) system used in power transformers. It is responsible for selecting different tap positions on the transformer winding while the transformer remains in operation. This allows smooth voltage regulation without interrupting the power supply. The assembly works together with the diverter switch to ensure safe and reliable switching under load conditions.
It is manufactured using high-quality conductive and insulating materials to ensure durability and stable performance in oil-filled and high-temperature environments. The assembly consists of a precision-aligned shaft, contact segments, and switching components that provide accurate tap positioning. By maintaining proper voltage control and reducing electrical stress, the NGEF Selector Switch Assembly helps improve transformer efficiency and extend service life.
SKU: n/a -
Diverter switch spares, OLTC Spares
OLTC Base plate mechanism
NGEF OLTC Base Plate Mechanism – Product Description
The NGEF OLTC Base Plate Mechanism is a core mechanical assembly used in On-Load Tap Changer systems of power and distribution transformers. It functions as the main operating platform that supports and controls the movement of internal switching components during tap-changing operations. By ensuring accurate rotation, alignment, and motion transfer, this mechanism enables smooth and reliable voltage regulation without interrupting the power supply.
Manufactured using high-strength metal alloys and precision-engineered parts, the NGEF Base Plate Mechanism offers excellent mechanical stability and long service life. Its robust construction allows it to withstand vibration, thermal stress, and continuous operating loads inside the transformer tank. Designed for easy maintenance and long-term reliability, it helps reduce mechanical wear, minimize downtime, and improve overall OLTC performance in substations and industrial power systems.
SKU: n/a -
OLTC Spares
Resistance Compartment
NGEF Resistance Compartment – Product Description
The NGEF Resistance Compartment is a specially designed enclosure used in On-Load Tap Changer (OLTC) systems of power and distribution transformers to safely house and protect the transition resistors. It plays a vital role during tap-changing operations by providing a secure and insulated environment for the resistive elements that control and limit circulating current. By enclosing the resistors properly, the resistance compartment ensures smooth voltage transition, prevents electrical faults, and enhances overall system reliability.
Manufactured using high-strength insulating materials and durable structural components, the NGEF Resistance Compartment offers excellent thermal stability and mechanical protection. Its robust construction allows efficient heat dissipation generated during switching operations, preventing overheating and maintaining stable resistance performance. The oil-resistant and corrosion-protected surfaces ensure reliable operation inside transformer tanks under harsh operating conditions.
The compartment is designed for precise mounting and easy integration with OLTC mechanisms.
SKU: n/a -
NGEF Transformer selector swicth
Selector fixed contact
Selector Fixed Contact – Product Description
The Selector Fixed Contact forms a stable electrical connection point in the selector switch mechanism. It remains stationary while interacting with moving contacts during tap changes, ensuring accurate and reliable voltage selection.
Produced from high-quality conductive materials, the fixed contact offers excellent wear resistance and low electrical losses. Its robust design ensures consistent performance under repeated switching operations.
SKU: n/a -
NGEF Transformer selector swicth
Selector moving contact
Selector Moving Contact – Product Description
The Selector Moving Contact is responsible for switching between different tap positions by making and breaking electrical connections. It works in coordination with fixed contacts to ensure smooth and safe voltage regulation.
Designed with precision-engineered contact surfaces and spring-loaded mechanisms, it provides firm contact pressure and minimal arcing. This improves switching reliability and reduces maintenance requirements.
SKU: n/a -
OLTC Spares
Side plate
NGEF Side Plate – Product Description
The NGEF Side Plate is an essential structural and insulating component used in On-Load Tap Changer (OLTC) systems of power and distribution transformers. It is designed to provide strong lateral support and secure mounting for internal components such as contacts, resistors, and operating mechanisms. By maintaining proper alignment and spacing, the side plate ensures smooth mechanical operation and reliable electrical performance of the diverter switch assembly.
Manufactured from high-quality insulating and heat-resistant materials, the NGEF Side Plate offers excellent electrical insulation and mechanical strength. Its robust construction allows it to withstand vibration, thermal stress, and continuous operational loads inside the transformer tank. The precision-machined design ensures accurate fitting of components, reducing the risk of misalignment, wear, and mechanical failure.
The side plate also plays an important role in enhancing operational safety by preventing electrical leakage and minimizing the possibility of internal flashovers.
SKU: n/a -
OLTC Spares
Slider
NGEF Slider – Product Description
The NGEF Slider is an essential mechanical component used in On-Load Tap Changer (OLTC) systems of power and distribution transformers. It is designed to guide and support the smooth linear movement of switching and contact mechanisms during tap-changing operations. By ensuring accurate positioning and controlled motion, the slider plays a key role in maintaining reliable voltage regulation and stable transformer performance.
Manufactured from high-strength, wear-resistant materials, the NGEF Slider offers excellent mechanical durability and long service life. Its precision-engineered surface reduces friction and ensures smooth sliding action, minimizing mechanical stress on connected components. The robust construction allows it to withstand continuous operation, vibration, and temperature variations inside the transformer tank.
The slider is designed to maintain proper alignment between moving parts, preventing jamming, misalignment, and uneven wear. This helps improve the overall efficiency of the diverter switch mechanism and reduces the risk of mechanical failure.
SKU: n/a -
NGEF Transformer selector swicth
Slip ring
Slip Ring – Product Description
The Slip Ring is an important current-carrying component used to transfer electrical power between stationary and rotating parts of the selector switch system. It ensures continuous electrical connection during tap-changing operations without interruption.
Manufactured from high-conductivity alloys, the slip ring provides low contact resistance and stable performance. Its smooth surface reduces wear on brushes and contacts, helping extend maintenance intervals and improve system reliability.
SKU: n/a -
OLTC Spares
Switching crank
NGEF Switching Crank – Product Description
The NGEF Switching Crank is an essential mechanical component used in OLTC operating systems to convert rotary motion into controlled linear or angular movement. It connects the drive mechanism with internal switching parts, enabling precise and reliable tap-changing operations. The switching crank ensures accurate synchronization between mechanical and electrical systems.
Produced from high-quality metal alloys and engineered for precision, the NGEF Switching Crank delivers excellent durability and performance. Its sturdy construction withstands repeated operations, vibration, and load stress. The crank’s design supports easy maintenance and helps improve the overall efficiency and reliability of OLTC systems.
SKU: n/a -
OLTC Spares
Switching lever
NGEF Switching Lever – Product Description
The NGEF Switching Lever is an important mechanical component used in On-Load Tap Changer (OLTC) systems of power and distribution transformers. It is responsible for transmitting motion from the drive mechanism to the contact assembly, enabling accurate and smooth switching between tap positions. By ensuring precise movement and proper alignment, the switching lever plays a vital role in maintaining reliable voltage regulation and stable transformer operation.
Manufactured from high-strength metal alloys and precision-machined components, the NGEF Switching Lever offers excellent mechanical durability and resistance to wear. Its robust construction allows it to withstand repeated switching cycles, vibration, and operational stress inside the transformer tank. The corrosion-resistant surface treatment protects the lever from oil, moisture, and temperature variations, ensuring long-term reliability.
The switching lever is designed to provide smooth and balanced motion with minimal friction.
SKU: n/a -
OLTC Spares
Transition resistance
NGEF Transition Resistance – Product Description
The NGEF Transition Resistance is a vital component used in On-Load Tap Changer (OLTC) systems of power and distribution transformers. It is designed to control and limit circulating current during tap-changing operations, ensuring smooth and safe voltage transition without interruption to the power supply. By temporarily introducing resistance into the circuit, it prevents short circuits, reduces electrical stress, and protects transformer components during switching.
Manufactured using high-quality resistance alloys and precision-engineered metal grids, the NGEF Transition Resistance offers excellent thermal stability and consistent electrical performance. Its robust construction allows efficient heat dissipation during operation, preventing overheating and maintaining stable resistance values. The insulated mounting structure ensures safe installation and reliable performance inside the transformer tank.
The transition resistance is built to withstand high electrical loads, frequent switching cycles, and harsh operating conditions such as heat, oil exposure, and vibration. Its maintenance-friendly design allows easy inspection, cleaning, and replacement, helping to reduce downtime and extend service life.
SKU: n/a -
NGEF Transformer selector swicth
Vertical contact carriers
Vertical Contact Carrier – Product Description
The Vertical Contact Carrier supports and guides contact assemblies within the selector switch structure. It maintains correct vertical alignment of contacts, ensuring proper engagement during tap-changing operations.
Manufactured from strong and corrosion-resistant materials, it offers excellent mechanical stability and resistance to operational stress. Its design helps reduce wear and improves switching accuracy.
SKU: n/a
