100 KVA Power Lines And Transformers-13.8/0.24/0.12 KV | Guyana 2025

Cut costs, save space, keep power flowing - choose Single Phase Pole Mounted Transformer.

01 General

1.1 Project Description

100 kVA power lines and transformers was delivered to Guyana in 2025. The rated power of the transformer is 100 kVA with ONAN cooling. The high voltage is 13.8 kV with ±2*2.5% tapping range (NLTC), the low voltage is 0.12/0.24 kV, they formed a vector group of Ii0.

Our 100kVA power lines and transformers is engineered with a primary rated voltage of 13.8kV and split secondary voltage of 0.12/0.24kV, optimized for medium-voltage overhead grid applications. Built with high-performance laminated silicon steel core and premium conductive windings, it adopts a fully sealed oil-filled design with natural air cooling (ONAN), ensuring stable voltage output, ultra-low no-load & load loss, and strong overload endurance.

Manufactured in full compliance with IEEE C57.12.00 and ANSI industry specifications, the transformer features a heavy-duty anti-corrosion tank finish to adapt to harsh outdoor environments. It is widely deployed in rural electrification projects, residential communities, small commercial facilities and remote regional power supply. With compact structure, straightforward pole mounting installation and long service lifespan, it provides a cost-effective and reliable power distribution solution for global utility grids.

1.2 Technical Specification

100 kVA power lines and transformers specifications type and data sheet

1.3 Drawings

100 kVA power lines and transformers diagram drawing and size.

02 Manufacturing

2.1 Core

The core adopts high-quality cold-rolled oriented silicon steel sheets with optimized magnetic circuit design, which effectively reduces no-load loss and no-load current. Matches the rated frequency of 60Hz and 100kVA rated capacity; Measured no-load loss is 0.228kW (far better than the guaranteed value of 0.263kW, within the +10% tolerance); Measured no-load current is 0.45%, with low excitation loss and stable magnetic performance, laying a solid foundation for efficient and quiet operation.

2.2 Winding

Adopts a 2-winding structure with precise manufacturing and strict parameter control, ensuring stable power conversion. Primary voltage: 13.8kV, secondary voltage: 0.24/0.12kV; Vector group: Ii0, polarity: Subtractive (reduced polarity), fully meets the standard requirements; Equipped with ±2×2.5% NLTC (no-load tap changer) (5 gears), the voltage ratio deviation of each gear is ≤-0.09% (far lower than the standard limit of ≤0.5%); Winding resistance is accurately measured, with stable resistance values of high-voltage and low-voltage windings at each gear, and excellent electrical consistency.

2.3 Tank

The oil-immersed sealed tank is made of high-strength material, with good sealing, heat dissipation and outdoor weather resistance. Cooling method: ONAN (oil natural circulation, air natural cooling), matching the heat dissipation demand of pole-mounted operation; Passed the 20kPa pressure leakage test for 12 hours, no leakage and no permanent deformation; Insulation oil dielectric strength is 63.45kV (much higher than the standard requirement of ≥45kV), with excellent insulation and heat transfer performance.

2.4 Final Assembly

The final assembly is carried out in strict accordance with IEEE C57.12.20 standard processes, focusing on structural compactness and installation convenience. Integrated assembly of core, winding, tap changer and tank, with precise fitting of all components; Calibrated polarity, transformation ratio, short-circuit impedance and other key parameters before delivery; Single-phase pole-mounted structure design, small size and light weight, suitable for rapid overhead installation on distribution poles.

03 Testing

Completed all routine tests in accordance with IEEE C57.12.90-2021 and CSA C802.1-13 (R2022) standards, all items are qualified, and the indicators are better than the standard requirements.

• Routine tests: winding resistance, voltage ratio, polarity, no-load/load loss, insulation resistance, etc.;
• Withstand voltage tests: applied voltage test (HV 34kV/60s, LV 10kV/60s), induced withstand voltage test (2Ur, 150Hz/48s), no voltage collapse;
• Performance parameters: short-circuit impedance 2.42%, efficiency 99.16%, load loss 0.865kW, all within the standard tolerance range.

04 Packing and Shipping

4.1 Packing

Adopts special protective packaging for pole-mounted transformers, which is fully adapted to long-distance transportation and outdoor storage.

• Moisture-proof, shock-proof and anti-collision packaging design to protect the tank, bushings and tap changer;
• Sealed protection for oil tank and electrical connectors to avoid moisture and dust intrusion;
• Complete product nameplates, test reports and qualification certificates are attached to the packaging.

4.2 Shipping

Adopts a lightweight and stable transportation scheme suitable for pole-mounted products.

• The compact structure is convenient for hoisting, land transportation and sea transportation;
• The product is firmly fixed during transportation to avoid displacement and damage;
• Complete factory documents are delivered with the goods to ensure that the product can be installed and used immediately after arrival.

05 Site And Summary

From rural grid expansion to remote area electrification, the single‑phase pole mounted transformer is the ideal overhead line choice – light, efficient, and easy to install. We offer standard stocked ratings and support customization of voltage taps to ensure fast delivery. If you are looking for a cost‑effective solution, click “Get a quote” or call us for project‑specific pricing and selection advice.