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Transcore Exciter Transformer
The Transcore Exciter Transformer is a single-phase electrical transformer designed for generator excitation systems, generator control panels and SCR power-control applications. It is rated for a 600VAC primary input and provides a center-tapped 120-0-120VAC secondary output at 7.5A, with a total rated capacity of 1800VA.
Transcore 600V 1800VA Exciter Transformer
The Transcore 600V 1800VA Exciter Transformer is a single-phase electrical transformer designed for generator excitation systems, generator control panels and SCR power-control applications. It is rated for a 600VAC primary input and provides a center-tapped 120-0-120VAC secondary output.
The complete secondary winding provides 240VAC from one outer terminal to the other, while each outer terminal provides 120VAC relative to the center tap. With a rated secondary current of 7.5A and an apparent power capacity of 1800VA, this transformer is suitable for industrial generator excitation circuits requiring a center-tapped AC supply.
600V Primary and 120-0-120V Secondary
The transformer is designed to receive a nominal 600VAC single-phase supply on its primary winding. The secondary winding is configured as 120-0-120VAC with a center-tap connection.
This configuration provides two equal 120VAC sections. When measured between either end of the secondary winding and the center tap, the nominal voltage is 120VAC. When measured across both outer secondary terminals, the nominal total voltage is 240VAC.
The center-tapped arrangement can be used in compatible excitation and rectifier circuits where two symmetrical AC voltages or a full 240VAC secondary supply are required. The exact terminal connections must follow the generator panel wiring diagram and the transformer nameplate.
Application in Generator Excitation Systems
A generator excitation system supplies electrical power to the generator field circuit. The excitation arrangement contributes to the creation and control of the generator magnetic field and therefore supports the regulation of generator output.
The Transcore 600V 1800VA Exciter Transformer provides the AC voltage required by the applicable excitation circuit. In an SCR-based generator panel, the transformer output may be connected to rectifier or thyristor circuitry that controls the excitation current supplied to the generator field.
The exact function and connection arrangement depend on the design of the original generator panel. This transformer should therefore be selected and installed according to the electrical schematic, terminal identification and equipment manufacturer’s specifications.
Suitable for Generator and SCR Panels
This exciter transformer is intended for use in compatible generator panels and silicon-controlled rectifier systems. SCR panels are used in industrial power-control applications where electrical power must be regulated and directed to generators, motors or other heavy-duty equipment.
The transformer may form part of a generator excitation circuit, rectifier supply circuit or associated panel-control arrangement. It should not be considered a universal transformer for every generator system merely because the voltage and VA ratings are similar.
Before ordering, users should verify the original transformer voltage ratio, current rating, VA capacity, frequency, terminal layout, mounting arrangement and physical dimensions.
1800VA Power Capacity at 7.5A
The transformer has a rated apparent power capacity of 1800 volt-amperes. The 120-0-120VAC secondary provides a total end-to-end voltage of 240VAC. At the specified rated current of 7.5A, the secondary capacity corresponds to 1800VA.
The transformer should not be continuously operated above its specified current or VA rating. Excessive loading can cause abnormal temperature rise, deterioration of winding insulation and premature transformer failure.
Actual permissible loading may also depend on ambient temperature, ventilation, enclosure design, operating duty, frequency and the waveform drawn by the connected SCR or rectifier circuit.
Main Technical Specifications
- Brand: Transcore
- Product type: Exciter transformer
- Phase: Single phase
- Primary voltage: 600VAC
- Secondary voltage: 120-0-120VAC
- Total secondary voltage: 240VAC end-to-end
- Secondary configuration: Center tapped
- Rated secondary current: 7.5A
- Rated capacity: 1800VA
- Equivalent capacity: 1.8kVA
- Primary application: Generator excitation system
- Panel application: Generator panel
- Control system: SCR
Main Features and Benefits
- Single-phase industrial transformer design
- 600VAC primary input rating
- Center-tapped 120-0-120VAC secondary output
- 240VAC total voltage across the complete secondary winding
- Rated secondary current of 7.5A
- 1800VA power capacity
- Suitable for compatible generator excitation circuits
- Designed for generator and SCR panel applications
- Suitable for industrial maintenance and replacement requirements
Center-Tapped Secondary Connections
The three secondary terminals represent one 120VAC winding section, the center tap and the second 120VAC winding section. The center terminal is normally identified as the zero or common point in the 120-0-120 designation.
Correct terminal identification is essential. Incorrect connection of the secondary winding may result in unsuitable voltage being applied to the excitation circuit, rectifier components or associated panel equipment.
Technicians should not rely only on wire color or terminal position. Connections should be confirmed using the transformer nameplate, terminal markings, electrical drawings and appropriate electrical measurements.
Compatibility and Cross-Reference
A transformer with the same voltage ratio and VA rating may still be incompatible if its frequency, insulation class, temperature rise, mounting dimensions, terminal positions or intended duty are different.
A commercial reference with matching electrical specifications identifies a Righill generator exciter transformer under part number RT-158 and item number 34-09-02-014. These references should be treated as possible cross-reference information only unless they are confirmed on the original transformer nameplate or generator panel documentation.
The Transcore 600V 1800VA Exciter Transformer should be compared directly with the existing unit before purchase. Clear photographs of the nameplate, dimensions, mounting points and terminal arrangement can assist with accurate identification.
Installation and Electrical Safety
This transformer should be installed only by qualified electrical personnel familiar with generator excitation circuits and SCR panels. The generator panel must be completely isolated from all electrical power sources before installation or replacement work begins.
Primary and secondary wiring must be connected to the correct terminals. Protective devices, grounding arrangements and conductor sizes should comply with the original panel design and applicable electrical requirements.
The transformer should be mounted securely and provided with sufficient ventilation. Cables, insulation and heat-sensitive components should not be positioned against surfaces that may become warm during operation.
After installation, technicians should verify the primary supply voltage and measure the secondary voltages before connecting the excitation load. Final functional testing should follow the approved generator and SCR panel commissioning procedure.
Ordering Information
When requesting the Transcore 600V 1800VA Exciter Transformer, specify the primary voltage, secondary voltage, rated current, VA capacity, phase and intended generator panel application.
The inquiry should include the complete description: 600VAC primary, 120-0-120VAC center-tapped secondary, single phase, 7.5A and 1800VA. Any visible Transcore model number, serial number, Righill reference or panel item number should also be provided.
Physical dimensions, mounting-hole spacing, terminal arrangement, operating frequency and insulation details should be confirmed before ordering to ensure that the supplied transformer is compatible with the existing generator excitation and SCR panel system.
The Transcore Exciter Transformer is a single-phase electrical transformer designed for generator excitation systems, generator control panels and SCR power-control applications. It is rated for a 600VAC primary input and provides a center-tapped 120-0-120VAC secondary output at 7.5A, with a total rated capacity of 1800VA.
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