200 kVA Cast Resin Dry Type Transformer

200 kVA Cast Resin Dry Type Transformer is prepared for indoor cast-resin transformer duty. It covers 6kV / 10kV / 400V (Isolation) input networks and 400V / 208V / 120V output distribution. It uses AN (Air Natural) cooling or thermal design data where specified. This series description presents the application, construction, protection, and specification details in finished product copy.

Power Integrity for Sensitive Equipment

For indoor cast-resin transformer duty, power Integrity for Sensitive Equipment is treated as a practical design and selection point rather than generic catalog wording.

• The 200 kVA Dry Type Transformer is frequently deployed not just for voltage step-down, but as a critical isolation barrier between the raw utility grid and sensitive electronic loads. Whether powering a specific row of CNC machines or a medical imaging wing, this unit provides galvanic isolation, helping to attenuate common-mode noise and protect downstream assets from grid-side transient spikes.
• Utilizing advanced impregnation technology, this vpi dry type transformer offers a high-reliability solution for indoor environments. Unlike cast resin units that form a solid block, the VPI construction allows for slight mechanical flexibility, making the coil significantly more resistant to the thermal shock caused by frequent load cycling or intermittent motor start-ups.

Natural Convection Cooling Dynamics

For indoor cast-resin transformer duty, natural Convection Cooling Dynamics is treated as a practical design and selection point rather than generic catalog wording.

• As a strictly air cooled transformer dry type, the design prioritizes unrestricted airflow. The winding geometry includes precisely calculated cooling ducts between the primary and secondary coils.
• 200 kVA dry transformer coils with vertical cooling ducts for.
• Mechanism: These ducts utilize the "Chimney Effect," where rising heat naturally draws cooler ambient air from the bottom, circulating it through the winding layers without the need for mechanical fans.
• Maintenance Reality: Since the cooling medium is ambient air, maintenance is straightforward. Operators only need to ensure the bottom ventilation screens are free of dust blockage. There are no dielectric fluids to degrade, eliminating the risk of soil contamination or the need for fire-suppression catch basins.

Technical Data Sheet

Technical Data Sheet provides selection data that helps compare ratings, voltage classes, and installation requirements.

• Technical Parameter.
• Specification Data.
• VPI (Vacuum Pressure Impregnated).
• 6kV / 10kV / 400V (Isolation).
• 400V / 208V / 120V.
• Aluminum or Copper Conductors.

Dielectric Strength and Environmental Coating

For indoor cast-resin transformer duty, dielectric Strength and Environmental Coating is treated as a practical design and selection point rather than generic catalog wording.

• The longevity of a VPI unit in non-climate-controlled rooms depends on its varnish. the design uses a high-grade polyesterimide varnish that is polymerized at high temperatures.
• This creates a glossy, non-hydroscopic surface on the coils. Even in humid operational conditions, the vpi dry type transformer resists moisture absorption. This "seal" prevents the insulation resistance (IR value) from dropping during weekend shutdowns, ensuring the unit is safe to re-energize immediately on Monday mornings without a pre-heating cycle.

Target Application Context

Target Application Context connects the product rating with the field conditions, enclosure layout, and distribution role it is normally selected for.

• 200 kVA dry type isolation transformer powering medical.
• Medical Facilities: Providing isolated 400V/230V power for MRI or CT scanners where oil units are banned due to fire risks.
• Precision Manufacturing: Localized power for robotic assembly cells that require strictly regulated voltage grounding.
• Commercial Infrastructure: Floor-level distribution in office towers where the air cooled transformer dry type design simplifies HVAC planning (heat load is predictable).

Electrical and Mechanical Data

The table data is organized for quick rating comparison, project specification, and transformer selection.

Product Detail Images