The Transformer,power, cataloged under National Stock Number 5950-00-995-4733, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Espey Mfg and Electronics Corp. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-995-4733 |
| Primary Part Number | DL-3P1 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Espey Mfg and Electronics Corp |
| Status | ACTIVE |
| Mounting Facility Quantity | 8 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 2.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Input-Output Phase Relationship | THREE PHASE TO THREE PHASE SINGLE COMPONENT |
| Mounting Method | FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP |
| Body Width | 10.250 INCHES MAXIMUM IN |
| Body Height | 7.500 INCHES MAXIMUM IN |
| Mounting Hole Diameter | 0.340 INCHES MINIMUM AND 0.353 INCHES MAXIMUM SINGLE GROUP IN |
| Winding Function and Quantity | 3 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Winding Shielding Method | INTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENT |
| Maximum Operating Temp | 105.0 CELSIUS DEGC |
| Body Length | 11.750 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | TF4RX02YY TYPE |
| Winding Operating Current | 195.0 MILLIAMPERES AC MINIMUM AND 340.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 60.0 HERTZ NOMINAL SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 9.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Winding Operating Voltage | 440.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL PRIMARY |
| Winding Operating Voltage | 1.90 AC KILOVOLTS MINIMUM AND 3.30 AC KILOVOLTS MAXIMUM SINGLE COMPONENT SINGLE SECONDARY |
| Terminal Type and Quantity | 3 STANDOFF, THREADED STUD AND 6 THREADED STUD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| DL-3P1 | Espey Mfg and Electronics Corp (USA) |
| Reference | Meaning |
|---|---|
| 1801351 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| DL-3P1 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5950-00-995-4733 is a Transformer,power, manufactured by Espey Mfg and Electronics Corp, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-995-4733 has 1 manufacturer part number on file: DL-3P1 (Espey Mfg and Electronics Corp).
Key specifications for DL-3P1: Mounting Facility Quantity: 8 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 2.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Input-Output Phase Relationship: THREE PHASE TO THREE PHASE SINGLE COMPONENT. 20 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.