Key Product Features

UTEC earthing transformers are available in many grounding configurations, such as
- Solidly Grounded: Provides a low-impedance path for fault currents to the ground. - Resistor Grounded: Includes a series resistor to limit fault currents and reduce stress on the power system during a fault. - Reactance Grounded: Incorporates a reactor in series with the neutral grounding, balancing fault current limitation and system stability. - Zigzag Grounding: Special winding configuration for low-impedance zero-sequence current paths.
Tailored for Different Voltage Systems
UTEC Earthing Transformers are designed to meet the specific requirements of various voltage systems and substations, ensuring optimal performance across diverse applications.
Enhanced System Safety
Provides a low-impedance path for fault currents, minimizing the risk of high voltages during ground faults. Prevents electrical shocks and minimizes equipment damage, enhancing overall system safety.
Fault Current Limitation
Limits fault currents during ground faults, safeguarding equipment from thermal and mechanical stress. Enables proper fault detection and ensures quick isolation for system stability.
Flexible Neutral Grounding Methods
The design accommodates different neutral grounding methods, including solid grounding, resistance grounding, and reactance grounding. Adapts to varying fault current levels, system requirements, and operational considerations.
Robust Construction
UTEC Earthing Transformers are built to withstand harsh environmental conditions, ensuring reliable performance. Simplifies installation and maintenance, providing a durable solution for substation grounding.

Proven Performance

Optimized Design

UTEC Earthing Transformers are meticulously designed to meet the specific demands of substation systems, providing optimized grounding solutions.

Wide Range of References

With a track record in different voltage systems and substations, UTEC Earthing Transformers have demonstrated their versatility and reliability.

Efficient Substation System Design

UTEC Earthing Transformers are crucial in creating efficient substation system designs, contributing to enhanced overall performance.

Simple Installation and Maintenance

The transformers are designed to ease installation and maintenance, minimizing downtime and ensuring operational efficiency.

Robust Construction

The rugged construction of UTEC Earthing Transformers ensures resilience in challenging environmental conditions, offering longevity and consistent performance.

Technical Data

General Specification
Installation Type
Ground / Pad Mounted
Standard Compliance
IEC60076
Power Rating
Up to 1,000 KVA
No of Phases
3 phases
HV System Voltage
Up to 36 kV
LV System Voltage
Up to 1 kV
Rated Frequency
50/60 Hz
Insulation Method / Class
Mineral / Ester/ Silicon Oil
Insulation Class
Class A standard / Higher class on request
Vector Group
ZN connection is usually applied. Z connection provides linear and specified zero sequence impedance. YN+d can also be applied.
Cooling Type
ONAN /KNAN
Fault current rating
According to customer specs
Zero sequence impedance
According to customer specs
Fault current duration
30 second ( standard )
Max. Ambient Temperature
55 C
Max Temperature Rise for Oil
45 C
Max Temperature Rise for Winding
50 C

UTEC Earthing Transformers - Optimal Grounding Solutions

Choose UTEC Earthing Transformers for your grounding needs and experience a new reliability, safety, and efficiency level in your substation system design. Our transformers are not just products; they are solutions crafted to elevate the performance of your power systems.

Earthing Transformers



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Riyadh, Saudi Arabia

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