Description
TRANSCORE Power Limit Transformer for SCR Feeder Panels
The TRANSCORE Power Limit Transformer is a 50VA industrial control transformer intended for compatible SCR feeder panel applications. It accepts a 600VAC primary supply and provides a 17-0-17VAC center-tapped secondary output for the associated power-limit and low-voltage control circuit. This configuration allows the transformer to supply two balanced 17VAC outputs referenced to a common center tap, while approximately 34VAC is available between the two outer secondary terminals.
Electrical Configuration and Output
The primary winding of this transformer is rated at 600VAC. The secondary winding is identified as 17-0-17VAC, which means that each outer secondary terminal provides approximately 17VAC relative to the center-tap terminal. When voltage is measured between the two outer secondary terminals, the total secondary voltage is approximately 34VAC.
The center-tapped arrangement is commonly used where a control circuit requires two equal AC voltage sections with a shared reference point. The exact connection must always follow the original SCR panel wiring diagram, terminal labels and equipment documentation. Incorrect terminal connection may damage the transformer, control board or other connected components.
Power Limit Circuit Application
The TRANSCORE Power Limit Transformer is specified for use in the power-limit section of a compatible feeder panel within an SCR control system. In drilling rig electrical systems, feeder panels distribute and control electrical power for connected equipment. The power-limit circuit forms part of the panel control arrangement and requires a suitable low-voltage supply for its electronic and control components.
This transformer may be used as a replacement during panel maintenance, electrical troubleshooting, system refurbishment or repair of an existing SCR feeder panel. It should only be installed where the original transformer specifications match the 600VAC primary rating, 17-0-17VAC secondary output and 50VA capacity stated for this product.
50VA Rated Capacity
The transformer has a rated apparent-power capacity of 50VA. The connected control circuit must remain within this rating under normal operating conditions. The 50VA value should not be treated as an interchangeable specification with transformers of a different capacity unless the replacement has been reviewed and approved by a qualified electrical technician.
The available current depends on how the secondary winding is connected and how the load is distributed. For this reason, the replacement decision should be based on the original nameplate, electrical drawings and circuit requirements rather than voltage values alone.
Suitable Maintenance and Replacement Use
The TRANSCORE Power Limit Transformer is suitable for maintenance and replacement applications involving compatible legacy SCR feeder panels. It can support repair work where the existing transformer has failed because of insulation deterioration, overheating, winding damage, loose terminals or long-term service conditions.
Before replacement, technicians should also inspect the surrounding circuit for short circuits, excessive loading, damaged wiring, loose connections or defective control components. Replacing the transformer without correcting the original cause of failure may result in repeated damage.
Technical Specifications
- Brand: TRANSCORE
- Product type: Power Limit Transformer
- Primary voltage: 600VAC
- Secondary voltage: 17-0-17VAC
- Secondary configuration: Center-tapped winding
- Voltage from each outer terminal to center tap: Approximately 17VAC
- Voltage between outer secondary terminals: Approximately 34VAC
- Rated capacity: 50VA
- Panel application: Feeder Panel
- System application: SCR control system
- Service purpose: Replacement, maintenance and refurbishment
Compatibility Checks Before Ordering
Before ordering the TRANSCORE Power Limit Transformer, compare the offered unit with the existing transformer and confirm all available identification details. Important checks include the primary voltage, secondary voltage, VA rating, operating frequency, terminal numbering, center-tap arrangement, mounting method, overall dimensions and physical orientation.
Photographs of the existing transformer should clearly show the nameplate, terminal side, mounting points and all identification markings. The SCR panel model, wiring diagram and transformer reference number should also be supplied whenever available. These details help reduce the risk of ordering a transformer that has the correct voltage rating but an incompatible terminal layout or mechanical configuration.
Installation and Safety
Installation must be completed by qualified personnel with the feeder panel isolated from all electrical sources. The technician should verify the absence of voltage before removing or connecting any wiring. Primary and secondary terminals must be connected according to the original panel diagram and transformer markings.
After installation, the secondary voltage should be checked before reconnecting sensitive electronic boards. Insulation condition, grounding, terminal tightness and surrounding ventilation should also be inspected. The transformer must not be operated above its stated electrical rating.
Request a Quotation
To request a quotation, provide the required quantity together with clear photographs of the existing transformer, nameplate information, dimensions, terminal arrangement and SCR feeder panel details. Oil Well Direct can review the supplied information to support technical matching before an offer is issued.
General technical reference for industrial control transformers used to provide stable low-voltage power in electrical control systems.
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