Our Products
Oil immersed Transformers
Our liquid-filled transformers are manufactured in strict adherence to the most demanding industry and international standards, ensuring consistent performance, safety, and longevity. Designed for both indoor and outdoor use, these transformers are built to withstand harsh environmental conditions, including tropical climates, heavy loads, and fluctuating grid demands. By combining advanced materials, precision engineering, and rigorous quality control, LTL ensures each transformer operates efficiently over its lifespan, minimising energy losses and operational costs. With a strong focus on sustainability and innovation, these transformers are also compatible with renewable energy integration and modern grid requirements, supporting Africa’s transition to cleaner, more reliable, and smarter energy systems. Through this holistic approach, LTL continues to empower utilities, industries, and communities with dependable power solutions that meet today’s needs while preparing for the energy challenges of tomorrow.
Technical Specifications
| Parameter | Specification |
|---|---|
| Power Rating | 5 – 2,000 kVA |
| Voltage Class | Up to 33 kV |
| Cooling | ONAN / ONAF |
| Frequency | 50 Hz (60 Hz optional) |
| Phases | 3 Phase / 1 Phase |
| Vector Groups | Dyn11, Yyn0, Yzn11, or as per customer request |
| Winding Material | Copper / Aluminium |
| Insulation Class | A (105 °C) |
| Tapping Range | ± 2 × 2.5 % (Off-Circuit Tap Changer) or as per customer requirement |
| Efficiency (typ.) | ≥ 98.5 % at power factor 0.8 |
| Cooling Medium | Mineral or Ester Oil (as per customer request) |
| Standards | IEC 60076, TANESCO S 21 and TBS TZ 284 or as per customer requirement |
| Testing | Routine & Type Tests per IEC 60076 |
| Options | Hermetically Sealed / Conservator Type |
Dry type transformers
LTL Transformers provides a comprehensive range of dry-type transformers with primary voltages up to 33 kV, designed and manufactured in compliance with all major international standards, including IEC and ANSI. Increasingly, customers are opting for dry-type transformers to minimize environmental contamination and reduce fire hazards, making them an ideal choice for urban, industrial, and sensitive applications. Engineered to meet strict electrical system requirements, LTL’s dry-type transformers perform reliably even in areas with extreme climatic conditions, from high humidity to elevated temperatures. These transformers are virtually maintenance-free, offering long-term operational stability and reduced lifecycle costs. Built with precision engineering and high-quality insulation materials, each unit ensures safe and efficient energy distribution while adhering to rigorous industry and international standards.
Technical Specifications
| Parameter | Specification |
|---|---|
| Power Rating | Up to 2000 kVA |
| Voltage Class | Up to 33 kV |
| Insulation Class | F (155 °C) or H (180 °C) |
| IP Protection | IP 21 – IP 32 |
| Cooling System | AN / AF |
| Application | Indoor / Marine / Renewables |
| Standards | IEC 60076-11 / ANSI C57 |
Pre-fabricated compact MV substations
LTL Transformers designs and manufactures compact medium-voltage (MV) substations to meet both standard and specific customer requirements. These substations are ideal for locations where underground power distribution is necessary, including residential, commercial, and industrial developments. LTL offers a full range of standard and customized compact MV substations, with capacities ranging from 100 kVA to 2,000 kVA, ensuring flexibility for diverse project needs. Each substation features a fully enclosed transformer along with high-voltage (HV) and low-voltage (LV) connections or switchgear, all pre-assembled and thoroughly tested in the factory before delivery to the site. The design methodologies undergo extensive review, both in engineering and in field applications, to ensure reliability, safety, and performance under real operating conditions. A wide variety of standard and bespoke configurations are available, with all arrangements fully rated within their enclosures. Through meticulous design, factory testing, and adherence to industry standards, LTL’s compact MV substations provide a dependable, efficient, and ready-to-install solution for modern power distribution networks.
Technical Specifications
| Specification | Detail |
|---|---|
| Rating Range | 100 – 2,000 kVA |
| Primary Voltage | Up to 33 kV |
| Enclosure Type | Compartmentalised (Steel / Aluminium) |
| Ingress Protection | IP 34 (MV), IP 33 (LV), IP 23D (Transformer Bay) |
| Impact Resistance | IK 10 |
| Cooling Type | Natural Air / Forced Air |
| Compliance | IEC 62271 / TANESCO S 21 (For Tanzania) |
| Factory Tests | Routine & Dielectric Tests before dispatch |
Special Transformers
In addition to standard distribution transformers, LTL Transformers designs and manufactures specialized transformers tailored for industrial and unique applications. These non-standard transformers are developed through extensive research and continuous evaluation of evolving customer needs across diverse market segments. Our range of specialized transformers includes earthing/grounding transformers, isolation transformers, completely self-protected transformers, dual voltage ratio transformers, multi-winding transformers, auto transformers, low-voltage air-cooled transformers, and pad-mounted (dead front) transformers built to ANSI standards. This approach allows industries to maintain uninterrupted operations, protect critical equipment, and optimize energy efficiency.
Technical Specifications
| Type | Application / Description |
|---|---|
| Earthing / Grounding Transformers | Neutral creation for MV systems |
| Isolation Transformers | Electrical separation for sensitive loads |
| Dual Ratio & Multi-Winding | Industrial / Export requirements |
| Pad-Mounted Transformers | ANSI dead-front design for urban networks |
