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Key Description & Specifications:

• Material: High-grade Bakelite or Synthetic Resin Bonded Paper (SRBP), offering high insulation resistance and heat resistance.
• Application: Specifically for CTR make OLTC models: CM-16, EN-16, EO-16, CK-16, and often compatible with FR16/FQ16, ensuring smooth operation during voltage regulation.
• Usage: Used in power and distribution transformers for holding fixed/moving contacts, ensuring electrical separation between phases.
• Voltage Rating: Commonly used in 33kV class, with options for higher voltage classes.
• Features: Provides superior insulation and thermal resistance, designed for oil-cooled transformers, with options for SMC (Sheet Moulding Compound) in modern versions.
• Dimensions/Shape: Custom engineered to fit the mounting and phase spacing requirements of 16-step/17-position CTR OLTC

Key Aspects of OLG OLTC Transition Resistance Assembly:

• Purpose: Limits current during tap-changing operations in the diverter switch.
• Specifications: Commonly found in 11 kV and 22 kV setups, suited for three-phase power transformers.
• Material: Often constructed with mild steel or durable materials for heat resistance.
• Availability: Offered by specialized providers like  and listed on platforms such as IndiaMART 

Key Features and Design Details of OLG OLTCs

• Structure: Constructed as a vertical column with a selector switch housed in an oil-tight, fiberglass-epoxy cylinder suspended from the head.
• Mounting: Often feature a flanged design for direct installation onto transformer tanks, reducing external oil leakage risks.
• Switching mechanism: Employs a combination of a coarse-fine selector and a diverter switch to manage 33 voltage positions, including neutral and up to 16 Raise/Lower positions.
• Components: Utilizes a motor drive mechanism equipped with a motor reduction gear, bevel gears, tap position indicator, and hand drive for manual operation.
• Energy Storage: Incorporates a main spring mechanism for quick-break high-speed switching to prevent prolonged arcing during transitions.

OLG (On Load Gears) make main springs are critical, high-cycle metal components designed for 11kV/33kV power transformer tap changers. They store and release energy for rapid switching (On-Load Tap Changer) to prevent long-duration arcing, often featuring robust, high-durability construction. IndiaMART +2Key Features & Description:

• Purpose: Stores and releases energy for high-speed operation of the tap changer mechanism during tap positions switching under load.
• Mechanism: Ensures quick movement of moving contacts, essential to prevent long-duration arcing.
• Material: Usually robust steel/aluminum construction for high-cycle life.
• Application: Suitable for 11kV, 33kV, and other power transformer OLTC units, often associated with Onload Gears (OLG) technology.
• Usage: Used in "On Tank" tap changer setups. IndiaMART +4

For specific OLG components, options include the OLG Make OLTC Main Spring - Aluminium, the OLG Make OLTC Main Spring - Metal, and other OLG Make OLTC Main Spring options available through IndiaMART. IndiaMART +2 

• OLG Make OLTC Main Spring, 33 kV, Aluminium - IndiaMART₹ 4,000/Piece. ★★★★★4.0 (15) Product Specifications. OLTC Type On Tank OLTC Rated Power 2000 kVA Voltage Class 33 kV Rated Current...IndiaMART
• OLG Make OLTC Main Spring - IndiaMART₹ 3,800. ★★★★★4.0 (15) Product Specifications. Rated Power 2000 kVA Voltage Class 33 kV Tap Changer Type On Load Material Metal Su...IndiaMART
• OLG Make OLTC Main Spring - IndiaMARTProduct Description. Used in power transformers (e.g., 11kV, 33kV, up to higher voltage classes) to regulate output voltage by cha...IndiaMART

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Key Features and Details:

• Manufacturer: CTR Manufacturing Industries.
• Type: 3-Phase Pre-selector Moving Contact Arm Assembly.
• Applications: Suited for CTR Onload Tapchangers used in distribution, sub-transmission, and power transformers.
• Material: Often constructed with Epoxy Arms and high-grade contact materials.
• Purpose: Works in conjunction with the main CTR OLTC unit to manage tap changes efficiently

Brass block assemblies are high-durability, corrosion-resistant components used for electrical connections (terminals), hydraulic systems, and hardware fittings. These assemblies often feature high-grade brass construction for superior conductivity or structural strength, frequently utilized in industrial applications like transformers or as terminal blocks