Model: 638-253-296

Power Transformer

Properties:

Reliability Indicator
Not established
Mounting Slot Width
0.313 inches single group
Frequency Rating
60.0 hertz single component
Input-output Phase Relationship
Single phase to single phase single component
Maximum Transformer Power Rating
250.0 volt-ampere single component
Body Length
6.375 inches
Body Width
4.875 inches
Body Height
5.000 inches
Distance Between Mounting Facility Centers
7.063 inches single mounting facility single center group
Inclosure Type
Fully enclosed
Mounting Facility Quantity
2 single group
Mounting Method
Flange single group and slot single group
Winding Function And Quantity
1 primary single component and 1 secondary single component
Winding Operating Current
19.7 milliamperes ac single component single secondary and 22.0 milliamperes ac single component single secondary
Winding Operating Current
1.0 amperes ac single component single primary and 1.2 amperes ac single component single primary
Winding Operating Voltage
230.00 ac pounds per hour wet single component single primary
Winding Operating Voltage
9.20 ac minor dry single component single secondary and 11.00 ac minor with retaining chain single component single secondary
Terminal Type And Quantity
2 connector, receptacle and 2 wire lead
NSN
5950-00-627-6753
Part Number
638-253-296
Description
Transformer,power
CAGE
75138

A transformer consisting of one or more primary winding(s) and one or more secondary winding(s). It may be designed for direct connection to an alternating current source for purposes of changing the secondary volts and amperes or designed to eliminate metallic interconnection between circuits in an overall one to one voltage ratio, with or without additional output windings, or items designed to automatically maintain a constant output voltage within specified limits under varying input or load conditions. Also includes items having a provision for mechanically changing the turns ratio or inductive coupling in progressive increments by means of voltage taps, ratio adjuster, or devices oe similar design. For transformers having winding(s) common to both input and output circuits, see transformer (1), power, autotransformer. Excludes transformer (1), pulse.

Part 638-253-296 NSN 5950-00-627-6753

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
32496
FIIG:
A058B0
Concept No.:
1
App. Key:
J
Cond. Code:
2
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
8.0 X 5.4 X 4.9
Paclk Weight:
13.0000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
063420
UFC:
35355
LTL:
RATING VARIABLE
LCL:
--
WCC:
595
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8504314065
  • SITC: 77119
  • End Use: Generators, accessories
  • NAICS: 334416
  • USDA: 1

Freight Class: Transformers, having a power handling capacity 40 va or greater but less than 1 kva, nesoi

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