BD991

View detailed technical data, stock status, and sourcing information for: BD991
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5950 Coils and Transformers

National Stock Number

5950-00-730-4035

Item Name Code

32496

Assigment Date

01/01/1961 (65 years ago)

1.500 inches nominal single mounting facility single center group center to center distance between mounting facilities parallel to width, 2.875 inches nominal single mounting facility single center group center to center distance between mounting facilities parallel to length, 400.0 hertz nominal single component frequency rating, not established reliability indicator, three phase to three phase single component input-output phase relationship

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Reliability Indicator: not established
Center To Center Distance Between Mounting Facilities Parallel To Length: 2.875 inches nominal single mounting facility single center group
Center To Center Distance Between Mounting Facilities Parallel To Width: 1.500 inches nominal single mounting facility single center group
Frequency Rating: 400.0 hertz nominal single component
Input-Output Phase Relationship: three phase to three phase single component
Transformer Winding Connection Type: wye-wye
Winding Shielding Method: internal shield grounded to inclosure single component
Body Length: 3.562 inches nominal
Body Width: 1.812 inches nominal
Body Height: 2.718 inches nominal
Inclosure Type: fully inclosed
Mounting Facility Quantity: 4 single group
Mounting Method: threaded hole single group
Winding Function And Quantity: 1 primary and 1 secondary single component
Nominal Thread Size: 0.138 inches single group
Winding Operating Current: 7.7 amperes ac maximum single component single secondary
Winding Power Rating: 175.0 volts-amperes single component single secondary
Winding Operating Voltage: 29.60 ac volts nominal and 67.80 ac volts nominal and 117.30 ac volts nominal and 200.00 ac volts nominal single component single primary
Winding Operating Voltage: 22.50 ac volts nominal single component single secondary
Thread Series Designator: unc single group
Terminal Type And Quantity: 15 tab, solder lug

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5950-00-538-4421	No Name Available	06/01/1977

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
59T11C1025	Power Transformer
7E42	Power Transformer
907D183-1	Power Transformer
BD991	Power Transformer
P55D5627	Power Transformer

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5950-00-730-4035?

The FSCG of the NSN 5950-00-730-4035 is 5950

Does NSN 5950-00-730-4035 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 5950-00-730-4035 contain precious materials?

Precious metal content is unknown

Does NSN 5950-00-730-4035 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5950-00-730-4035 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961