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Cofi

ItalyIgnition & Transformers

Cofi is an Italian manufacturer of ignition transformers and combustion control components for industrial burner systems. The company's product line is focused on the high-voltage spark generation required to ignite gas, oil, and dual-fuel burners in heating, process, and power-generation applications. Cofi's portfolio includes step-up transformers that convert standard 220V single-phase primary supply into secondary outputs ranging from 4000V to 12000V, depending on the model. These transformers are available in several series: the TRS series for gas applications, the TRG series for fuel oil, and the TRE series for oil-immersed construction. Each series is designed to meet the electrical and mechanical demands of modern burner controllers, with models differentiated by secondary voltage, number of output poles, and cable configuration. For example, the TRS 830 P/S delivers a single 8000V output, while the TRG 1035/S provides dual 5000V outputs, and the TRK2-35 offers dual 12000V outputs for high-energy ignition. Cofi transformers are typically supplied with integrated cable assemblies, ranging from 380mm to 400mm in length, and some models feature molded or angled high-voltage cables for flexible installation. The units operate at 50/60 Hz and are rated for ambient temperatures from -20°C to 85°C, with protection ratings up to IP 00 for open-frame designs. Build quality emphasizes polyester resin isolation in models like the T17M, which supports electrode gaps of 3-5mm and consumes 460 VA. Cofi also manufactures mounting accessories, including spina connectors and high-voltage outlet cables, to support field installation and maintenance. 3G Electric stocks a comprehensive range of Cofi ignition transformers and accessories, ensuring availability for both OEM and replacement applications. The product selection covers primary voltages of 110V, 115V, and 220V, accommodating various control panel configurations. For procurement specialists and maintenance engineers, Cofi transformers offer a straightforward integration path into existing combustion skids, with standardized mounting patterns and electrical connections. The range is suitable for use in industrial boilers, furnaces, incinerators, and other combustion equipment where reliable spark ignition is critical. 3G Electric supplies these components globally, with technical support to assist in selecting the correct transformer for specific burner types and voltage requirements.

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About Cofi

Cofi is an Italian manufacturer of ignition transformers and combustion control components for industrial burner systems. The company's product line is focused on the high-voltage spark generation required to ignite gas, oil, and dual-fuel burners in heating, process, and power-generation applications. Cofi's portfolio includes step-up transformers that convert standard 220V single-phase primary supply into secondary outputs ranging from 4000V to 12000V, depending on the model. These transformers are available in several series: the TRS series for gas applications, the TRG series for fuel oil, and the TRE series for oil-immersed construction. Each series is designed to meet the electrical and mechanical demands of modern burner controllers, with models differentiated by secondary voltage, number of output poles, and cable configuration. For example, the TRS 830 P/S delivers a single 8000V output, while the TRG 1035/S provides dual 5000V outputs, and the TRK2-35 offers dual 12000V outputs for high-energy ignition. Cofi transformers are typically supplied with integrated cable assemblies, ranging from 380mm to 400mm in length, and some models feature molded or angled high-voltage cables for flexible installation. The units operate at 50/60 Hz and are rated for ambient temperatures from -20°C to 85°C, with protection ratings up to IP 00 for open-frame designs. Build quality emphasizes polyester resin isolation in models like the T17M, which supports electrode gaps of 3-5mm and consumes 460 VA. Cofi also manufactures mounting accessories, including spina connectors and high-voltage outlet cables, to support field installation and maintenance. 3G Electric stocks a comprehensive range of Cofi ignition transformers and accessories, ensuring availability for both OEM and replacement applications. The product selection covers primary voltages of 110V, 115V, and 220V, accommodating various control panel configurations. For procurement specialists and maintenance engineers, Cofi transformers offer a straightforward integration path into existing combustion skids, with standardized mounting patterns and electrical connections. The range is suitable for use in industrial boilers, furnaces, incinerators, and other combustion equipment where reliable spark ignition is critical. 3G Electric supplies these components globally, with technical support to assist in selecting the correct transformer for specific burner types and voltage requirements.

Common Applications

  • Industrial gas boilers — Cofi TRS 830 P/S ignition transformer for spark generation in natural gas burners
  • Fuel oil burner systems — Cofi TRG 1035/S transformer providing dual 5000V outputs for oil atomization ignition
  • High-energy ignition in process furnaces — Cofi TRK2-35 oil-filled transformer delivering 12000V for heavy fuel ignition
  • Combustion control panels — Cofi T17M transformer with polyester resin isolation for electrode gaps of 3-5mm
  • Dual-fuel burner applications — Cofi TRS 818 C/S4 oil transformer with 2x4000V output for gas/oil switching
  • Field replacement and maintenance — Cofi Spina cable A L400mm straight and angled high-voltage cables for transformer retrofits
Origin: Manufactured in Italy

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Frequently asked questions

Common questions about Cofi from 3G Electric.

What are the primary voltage options for Cofi ignition transformers?

Cofi ignition transformers are available with primary voltage ratings of 110V, 115V, and 220V single-phase. The 220V models, such as the TRS 830 P/S and TRG 1035/S, are common in industrial control panels. The 115V variant, like the TRE 820 Piso1, is used in systems with lower control voltages. Always verify the primary voltage matches your supply to avoid damage.

How do I choose between the Cofi TRS, TRG, and TRE series?

The TRS series is designed for gas burner ignition, providing single or dual high-voltage outputs (e.g., 1x8000V or 2x4000V). The TRG series is for fuel oil applications, typically offering dual outputs like 2x5000V. The TRE series features oil-immersed construction for enhanced insulation and is suitable for harsh environments. Select based on fuel type and required output voltage.

What is the typical secondary voltage output for Cofi transformers?

Cofi transformers deliver secondary voltages ranging from 4000V to 12000V, depending on the model. For example, the TRS 818 C/S4 provides 2x4000V, the TRG 1035/S provides 2x5000V, and the TRK2-35 provides 2x12000V. The output is designed to create a spark across the electrode gap in the burner.

Are Cofi transformers supplied with cables?

Yes, most Cofi ignition transformers come with integrated high-voltage cable assemblies. Cable lengths typically range from 380mm to 400mm, with some models offering longer or angled cables, such as the 1500mm angled outlet cable. The cables are pre-connected to the secondary terminals, simplifying installation.

What is the operating temperature range for Cofi transformers?

Cofi ignition transformers are rated for ambient temperatures from -20°C to 85°C. This range ensures reliable operation in industrial environments where heat from combustion equipment may be present. Always ensure adequate ventilation and avoid exceeding the upper limit to prevent insulation degradation.

Can Cofi transformers be used with both 50 Hz and 60 Hz supplies?

Yes, Cofi transformers are designed to operate at both 50 Hz and 60 Hz frequencies. Models like the TRE 820 Piso1 explicitly list 50/60 Hz operation. This makes them suitable for installations in different regions without modification, as long as the primary voltage matches.