The Transformer,power, cataloged under National Stock Number 5950-01-297-3079, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Precision Electronics, Inc. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5950-01-297-3079 |
| Primary Part Number | PEI 9261 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Precision Electronics, Inc |
| Status | ACTIVE |
| Transformer Winding Connection Type | WYE-DELTA AND WYE-OPEN DELTA |
| Mounting Facility Quantity | 8 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 3.785 INCHES MINIMUM AND 3.805 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Input-Output Phase Relationship | THREE PHASE TO THREE PHASE AND THREE PHASE TO TWO PHASE SINGLE COMPONENT |
| Mounting Method | THREADED HOLE(S) SINGLE GROUP |
| Body Width | 2.670 INCHES MINIMUM AND 2.730 INCHES MAXIMUM IN |
| Body Height | 1.890 INCHES MINIMUM AND 1.950 INCHES MAXIMUM IN |
| Maximum Transformer Power Rating | 840.0 VOLT-AMPERE SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT |
| Winding Shielding Method | INTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT |
| Features Provided | COLOR CODED LEAD |
| Nominal Thread Size | 0.112 INCHES SINGLE GROUP IN |
| Maximum Operating Temp | 155.0 CELSIUS DEGC |
| Body Length | 4.570 INCHES MINIMUM AND 4.630 INCHES MAXIMUM IN |
| Winding Operating Current | 10.2 AMPERES AC NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Winding Operating Current | 200.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Current | 200.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT THIRD SECONDARY |
| Winding Operating Current | 7.2 AMPERES AC NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 400.0 HERTZ NOMINAL SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.910 INCHES MINIMUM AND 1.930 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Winding Operating Voltage | 230.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Winding Operating Voltage | 8.50 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Voltage | 22.60 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY |
| Winding Operating Voltage | 38.04 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Terminal Type and Quantity | 18 WIRE LEAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP |
| 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 |
|---|---|
| PEI 9261 | Precision Electronics, Inc (USA) |
| S1270 | Abbott Technologies, Inc (USA) |
| Reference | Meaning |
|---|---|
| 199BC804-1 | 3/9 Design control — primary reference Acme Electric Corporation Dba Advanced Energy Systms Aerospa Div Aerospace Division |
| 199BC804-1 | C/1 Advisory reference — outside the item-of-supply concept Acme Aerospace, Inc. Dba Acme Aerospace Inc |
NSN 5950-01-297-3079 is a Transformer,power, manufactured by Precision Electronics, Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-297-3079 has 2 manufacturer part numbers on file: PEI 9261 (Precision Electronics, Inc), S1270 (Abbott Technologies, Inc).
Key specifications for PEI 9261: Transformer Winding Connection Type: WYE-DELTA AND WYE-OPEN DELTA; Mounting Facility Quantity: 8 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 3.785 INCHES MINIMUM AND 3.805 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 28 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.