The Transformer,power, cataloged under National Stock Number 5950-01-165-3757, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-165-3757 |
| Primary Part Number | 77C718779P001 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 ALL GROUPINGS |
| Inclosure Type | PARTIALLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 5.000 INCHES NOMINAL ALL MOUNTING FACILITIES ALL CENTER GROUPINGS IN |
| Input-Output Phase Relationship | THREE PHASE TO THREE PHASE ALL COMPONENTS |
| Mounting Method | SLOT ALL GROUPINGS |
| Maximum Transformer Power Rating | 1.8 KILOVOLT-AMPERE ALL COMPONENTS |
| Winding Function and Quantity | 1 PRIMARY AND 3 SECONDARY ALL COMPONENTS |
| Winding Operating Current | 4.0 AMPERES AC NOMINAL SINGLE COMPONENT FIRST PRIMARY |
| Winding Operating Current | 4.0 AMPERES AC NOMINAL SINGLE COMPONENT SECOND PRIMARY |
| Winding Operating Current | 80.0 AMPERES AC NOMINAL SINGLE COMPONENT THIRD PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 60.0 HERTZ NOMINAL ALL COMPONENTS |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 4.625 INCHES NOMINAL ALL MOUNTING FACILITIES ALL CENTER GROUPINGS IN |
| Winding Operating Voltage | 26.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Winding Operating Voltage | 208.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Winding Operating Voltage | 26.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Voltage | 19.50 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY |
| Terminal Type and Quantity | 13 TAB, SOLDER LUG |
| Mounting Slot Width | 0.280 INCHES NOMINAL ALL GROUPINGS IN |
| 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 |
|---|---|
| 77C718779P001 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| GE-3P138 | 5/9 Secondary reference U.S. Government activity |
NSN 5950-01-165-3757 is a Transformer,power, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-165-3757 has 1 manufacturer part number on file: 77C718779P001 (Lockheed Martin Corporation Div Rms).
Key specifications for 77C718779P001: Overall Height: 6.630 INCHES NOMINAL IN; Mounting Facility Quantity: 4 ALL GROUPINGS; Inclosure Type: PARTIALLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 5.000 INCHES NOMINAL ALL MOUNTING FACILITIES ALL CENTER GROUPINGS IN. 19 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.