PEI 7991 — TRANSFORMER,POWER

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

PEI 7991: TRANSFORMER,POWER.

The TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include overall_width: 3.850 INCHES MAXIMUM IN, inclosure_type: FULLY INCLOSED, overall_height: 2.270 INCHES MAXIMUM IN, overall_length: 4.560 INCHES MAXIMUM IN, mounting_method: UNTHREADED HOLE(S) SINGLE GROUP, frequency_rating: 45.0 HERTZ MINIMUM AND 66.0 HERTZ MAXIMUM SINGLE COMPONENT. This part is cataloged in the U.S.

Government catalog under NSN 5950-01-331-3922, 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

PEI 7991

NSN: 5950-01-331-3922
FSC: 5950 — Coils and Transformers
CAGE: 13483 — PRECISION ELECTRONICS, INC (USA)

SPECIFICATIONS

overall_width	3.850 INCHES MAXIMUM IN
inclosure_type	FULLY INCLOSED
overall_height	2.270 INCHES MAXIMUM IN
overall_length	4.560 INCHES MAXIMUM IN
mounting_method	UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating	45.0 HERTZ MINIMUM AND 66.0 HERTZ MAXIMUM SINGLE COMPONENT
winding_power_rating	7.42 VOLTS-AMPERES SINGLE COMPONENT SECOND SECONDARY
reliability_indicator	NOT ESTABLISHED
maximum_operating_temp	130.0 CELSIUS DEGC
mounting_hole_diameter	0.181 INCHES MINIMUM AND 0.201 INCHES MAXIMUM SINGLE GROUP IN
winding_shielding_method	INTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
winding_operating_current	500.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT SECOND SECONDARY
NSN	5950-01-331-3922

COMPONENT DIAGRAM

KEY FEATURES

•

TRANSFORMER WINDING CONNECTION TYPE: DELTA-DELTA

•

MOUNTING FACILITY QUANTITY: 4 SINGLE GROUP

•

INCLOSURE TYPE: FULLY INCLOSED

•

CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 2.990 INCHES MINIMUM AND 3.010 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN

•

WINDING POWER RATING: 16.6 VOLTS-AMPERES SINGLE COMPONENT FIRST SECONDARY

•

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

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	2.270 INCHES MAXIMUM IN
TRANSFORMER WINDING CONNECTION TYPE	DELTA-DELTA
MOUNTING FACILITY QUANTITY	4 SINGLE GROUP
INCLOSURE TYPE	FULLY INCLOSED
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH	2.990 INCHES MINIMUM AND 3.010 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
WINDING POWER RATING	16.6 VOLTS-AMPERES SINGLE COMPONENT FIRST SECONDARY
WINDING POWER RATING	7.42 VOLTS-AMPERES SINGLE COMPONENT SECOND SECONDARY
INPUT-OUTPUT PHASE RELATIONSHIP	THREE PHASE TO THREE PHASE SINGLE COMPONENT
MOUNTING METHOD	UNTHREADED HOLE(S) SINGLE GROUP
MOUNTING HOLE DIAMETER	0.181 INCHES MINIMUM AND 0.201 INCHES MAXIMUM SINGLE GROUP IN

SUBSTITUTES & CROSS-REFERENCES 5

WE-4155Reference document

Same NSN cross-reference

Reference document — Secondary reference

C15300Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

43829-1Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

841355-0001Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

311-14834-01Reference 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 PEI 7991?

PEI 7991 is a TRANSFORMER,POWER.

What parts can replace PEI 7991?

There are 5 known substitutes for PEI 7991: WE-4155, C15300, 43829-1 and 2 more. Substitute compatibility should be verified for your specific system.

What is the NSN for PEI 7991?

PEI 7991 is cataloged in the U.S. Government catalog under NSN 5950-01-331-3922. This indicates validated use in U.S. government and defense supply chains.

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