Eaton T20P11S10NV Transformer - DS-3 Dry Type
Part Number: T20P11S10NV
Quick Summary
Eaton T20P11S10NV Transformer is a dry-type distribution transformer used for reliable single-phase power distribution. Engineers often wrestle with space constraints, ventilation requirements, and ongoing maintenance costs when selecting power distribution equipment. Key design features include DS-3 enclosure and aluminum windings, 150°C temperature rise, and a one-year warranty, with exact certifications to be confirmed with the manufacturer. The unit supports precise voltage tap adjustments and predictable performance, reducing downtime and energy waste while simplifying installation in control rooms, machines, and other electrical rooms. By choosing this transformer, facilities can streamline procurement and improve total cost of ownership for indoor, mission-critical power delivery.
Product Information
Extended Description
T20P11S10NV Eaton: General-Purpose Transformer, Ventilated, Dry Type Distribution, DS-3, Single-phase, PV: 240 X 480V, Taps: 1 at +5% FCAN, 2 at -5% FCBN X 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 120/240V, 150°C, 10 kVA, Al windings, Frame: 817N
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
T20P11S10NV
UPC
786680052064
Product Length/Depth
19.5 in
Product Height
37.53 in
Product Width
22.59 in
Product Weight
320 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
Contact Manufacturer
Catalog Notes
Totally enclosed non-ventilated DS-3 or DT-3
Coil material
Aluminum
Design
DS-3
Frame
817N
Tap size
1 at +5% FCAN, 2 at -5% FCBN x 2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Dry Type Distribution Transformer
Frequency rating
60 Hz
Kva Rating
10 kVA
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - T20P11S10NV
Selling Policy 25-000 - Distribution and Control Products and Services
Feature DS-3 dry-type enclosure and totally enclosed non-ventilated design provide rugged indoor performance with minimal venting and dust ingress, which translates to lower maintenance and longer intervals between service calls in harsh factory environments. This design supports a measurable business impact: reduced downtime and safer, cleaner electrical rooms, enabling reliable operation of critical equipment across manufacturing lines and data centers. Application: ideal for indoor power distribution in industrial facilities where space is at a premium and maintenance access is limited, such as machine tool panels and control cabinets. Long-tail keywords: dry-type transformer, totally enclosed transformer, non-ventilated transformer, DS-3 design, indoor power distribution.
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FAQs
Plan for indoor installation in a clean, ventilated space with adequate clearance around the 19.5 by 22.59 by 37.53 inch footprint. Ensure mounting on a solid, level surface capable of supporting approximately 320 lb. Verify the DS-3 enclosure compatibility and provide space for access to taps and wiring connections. Allow room for future maintenance with convenient access.
The transformer offers multiple taps: 1 at +5% FCAN, 2 at -5% FCBN, 2 at +2.5% FCAN, and 4 at -2.5% FCBN. Use these to compensate for supply voltage variations and maintain stable secondary voltage, reducing equipment stress and improving performance of sensitive loads. Plan tapping based on measured feeder voltage range at installation.
Yes. Its 10 kVA single-phase rating with 240/480 V primary and 120/240 V secondary is well-suited for powering control panels and machine tools. The compact DS-3 dry-type design minimizes cooling needs, while the aluminum windings improve reliability under continuous operation in indoor environments. Ensure proper clearance for mounting and wiring.
Certifications should be confirmed with Eaton for your region. Typical industrial transformers require local regulatory approvals (such as CE or UL) and adherence to DS-3 enclosure standards. Coordinate with Eaton to obtain the exact certifications applicable to your installation site and industry regulations.
The unit carries Eaton’s warranty of one year from installation or 18 months from shipment, whichever occurs first, reducing replacement risk. Routine checks of connections, insulation, and ambient conditions are recommended, along with periodic thermal checks during operation. This helps minimize unplanned downtime and extend service intervals.