D178721 — TRANSFORMER,POWER

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

D178721: TRANSFORMER,POWER.

The TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include body_length: 8.812 INCHES NOMINAL IN, overall_width: 3.500 INCHES NOMINAL IN, inclosure_type: HERMETICALLY SEALED WITH OIL, overall_height: 4.875 INCHES NOMINAL IN, mounting_method: THREADED STUD(S) SINGLE GROUP, frequency_rating: 60.0 HERTZ NOMINAL SINGLE COMPONENT. This part is cataloged in the U.S.

Government catalog under NSN 5950-00-254-3372, 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

D178721

NSN: 5950-00-254-3372
FSC: 5950 — Coils and Transformers
CAGE: 64959 — AMERICAN TELEPHONE AND TELEGRAPH CO (USA)

SPECIFICATIONS

body_length	8.812 INCHES NOMINAL IN
overall_width	3.500 INCHES NOMINAL IN
inclosure_type	HERMETICALLY SEALED WITH OIL
overall_height	4.875 INCHES NOMINAL IN
mounting_method	THREADED STUD(S) SINGLE GROUP
frequency_rating	60.0 HERTZ NOMINAL SINGLE COMPONENT
nominal_thread_size	0.250 INCHES SINGLE GROUP IN
reliability_indicator	NOT ESTABLISHED
thread_quantity_per_inch	20 SINGLE GROUP
thread_series_designator	UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
winding_shielding_method	INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
winding_operating_current	3.0 AMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
NSN	5950-00-254-3372

COMPONENT DIAGRAM

KEY FEATURES

•

MOUNTING FACILITY QUANTITY: 4 SINGLE GROUP

•

INCLOSURE TYPE: HERMETICALLY SEALED WITH OIL

•

CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 2.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN

•

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

•

MOUNTING METHOD: THREADED STUD(S) SINGLE GROUP

•

WINDING FUNCTION AND QUANTITY: 1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	4.875 INCHES NOMINAL IN
MOUNTING FACILITY QUANTITY	4 SINGLE GROUP
INCLOSURE TYPE	HERMETICALLY SEALED WITH OIL
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH	2.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
INPUT-OUTPUT PHASE RELATIONSHIP	SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
MOUNTING METHOD	THREADED STUD(S) SINGLE GROUP
OVERALL WIDTH	3.500 INCHES NOMINAL IN
WINDING FUNCTION AND QUANTITY	1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
WINDING SHIELDING METHOD	INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
NOMINAL THREAD SIZE	0.250 INCHES SINGLE GROUP IN

SUBSTITUTES & CROSS-REFERENCES 1

B0-170289Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is D178721?

D178721 is a TRANSFORMER,POWER.

What parts can replace D178721?

There is 1 known substitute for D178721: B0-170289. Substitute compatibility should be verified for your specific system.

What is the NSN for D178721?

D178721 is cataloged in the U.S. Government catalog under NSN 5950-00-254-3372. This indicates validated use in U.S. government and defense supply chains.

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