T6657 — TRANSFORMER,POWER AUTOTRANSFORME

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

T6657: TRANSFORMER,POWER AUTOTRANSFORME.

TRANSFORMER,POWER AUTOTRANSFORME. Key specifications include body_width: 6.865 INCHES MINIMUM AND 6.885 INCHES MAXIMUM IN, body_height: 6.615 INCHES MINIMUM AND 6.635 INCHES MAXIMUM IN, body_length: 7.740 INCHES MINIMUM AND 7.760 INCHES MAXIMUM IN, inclosure_type: FULLY INCLOSED, mounting_method: THREADED STUD(S) SINGLE GROUP, frequency_rating: 75.0 HERTZ NOMINAL SINGLE COMPONENT. This part is cataloged in the U.S.

Government catalog under NSN 5950-00-992-2586, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

T6657

NSN: 5950-00-992-2586
FSC: 5950 — Coils and Transformers
CAGE: 05853 — PTC TRANSFORMERS (USA)

SPECIFICATIONS

body_width	6.865 INCHES MINIMUM AND 6.885 INCHES MAXIMUM IN
body_height	6.615 INCHES MINIMUM AND 6.635 INCHES MAXIMUM IN
body_length	7.740 INCHES MINIMUM AND 7.760 INCHES MAXIMUM IN
inclosure_type	FULLY INCLOSED
mounting_method	THREADED STUD(S) SINGLE GROUP
frequency_rating	75.0 HERTZ NOMINAL SINGLE COMPONENT
nominal_thread_size	0.312 INCHES SINGLE GROUP IN
reliability_indicator	NOT ESTABLISHED
thread_series_designator	UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
winding_operating_current	9.5 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY INPUT
winding_operating_voltage	126.00 AC VOLTS NOMINAL AND 154.00 AC VOLTS NOMINAL AND 330.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
mounting_facility_quantity	4 SINGLE GROUP
NSN	5950-00-992-2586

COMPONENT DIAGRAM

KEY FEATURES

•

TRANSFORMER WINDING CONNECTION TYPE: WYE-WYE

•

MOUNTING FACILITY QUANTITY: 4 SINGLE GROUP

•

INCLOSURE TYPE: FULLY INCLOSED

•

CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 3.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN

•

INPUT-OUTPUT PHASE RELATIONSHIP: THREE PHASE TO THREE PHASE SINGLE COMPONENT

•

MOUNTING METHOD: THREADED STUD(S) SINGLE GROUP

•

BODY WIDTH: 6.865 INCHES MINIMUM AND 6.885 INCHES MAXIMUM IN

•

BODY HEIGHT: 6.615 INCHES MINIMUM AND 6.635 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

TRANSFORMER WINDING CONNECTION TYPE	WYE-WYE
MOUNTING FACILITY QUANTITY	4 SINGLE GROUP
INCLOSURE TYPE	FULLY INCLOSED
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH	3.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
INPUT-OUTPUT PHASE RELATIONSHIP	THREE PHASE TO THREE PHASE SINGLE COMPONENT
MOUNTING METHOD	THREADED STUD(S) SINGLE GROUP
BODY WIDTH	6.865 INCHES MINIMUM AND 6.885 INCHES MAXIMUM IN
BODY HEIGHT	6.615 INCHES MINIMUM AND 6.635 INCHES MAXIMUM IN
WINDING FUNCTION AND QUANTITY	1 PRIMARY, FIXED AUTOTRANSFORMER TYPE SINGLE COMPONENT
NOMINAL THREAD SIZE	0.312 INCHES SINGLE GROUP IN

OTHER ITEMS IN FSC 5950 — Coils and Transformers

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5950-00-000-0146 5950-00-001-1372 5950-00-001-1386 5950-00-001-1410 5950-00-001-1411 5950-00-001-1412 5950-00-001-1413 5950-00-001-1414

SUBSTITUTES & CROSS-REFERENCES 1

2209532Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is T6657?

T6657 is a TRANSFORMER,POWER AUTOTRANSFORME.

What parts can replace T6657?

There is 1 known substitute for T6657: 2209532. Substitute compatibility should be verified for your specific system.

What is the NSN for T6657?

T6657 is cataloged in the U.S. Government catalog under NSN 5950-00-992-2586. This indicates validated use in U.S. government and defense supply chains.

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T6657 — TRANSFORMER,POWER AUTOTRANSFORME

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