Equipment information

Chicago Transformer XXXXX Catalog
Manufacturer
Chicago Transformer
Model XXXXX
Date 1953
Category Catalogs
Group Catalog
Description
Information
                                    

These manuals are available for the above equipment:

Manual Type Catalog CTC-9198-Manual-Page-1-Picture
Pages 32
Size 8.45 Mbytes (8856318 Bytes)
Language english
Revision
Manual-ID/Number
Date 01 January 1953
Quality Scanned document, all readable.
Upload date
MD5 eaddf5c06535564a32c903df1f3a3cbb
Downloads 140 since 06 August 2017
Information
Transformers and Filter Reactors

MIL-T-27A
HERMETICALLY SEALED

NEW EQUIPMENT COMMERCIAL GRADE

CONTROL and POWER CIRCUIT

CHICAGO hermetically-sealed transformers are designed and
built in accordance with MIL-T-27A Grade 4, specifications
for Class R operation. Other units are listed for Class S
operation. All units fully meet the rigid requirements for
guided missile, military airborne and ground communications
equipment, marine equipment, and in any field where a
maximum of sealing quality construction is important. They
are especially useful in research and development
applications, pilot runs, and pre-production models.

To indicate the construction characteristics of this CHICAGO
transformer line, the MIL-T-27A specifications require that
the transformers be:

1. Temperature and Immersion cycled for 5 complete test
cycles of five steps each in temperatures varying from (Plus
85°C. for Class R; Plus 108°C. for Class S) to minus 55°C.
including a 25°C. saturated salt water immersion step.

2. Moisture resistance tested in temperatures varying from
plus 65°C. to minus 10°C. at 90-95% relative humidity for
ten 24 hour cycles extending over a ten day period.

3. Tested for insulation resistance in excess of 1000
megohms after being subjected to tests 1 and 2.

4. Tested on each winding at twice the rated A-C voltage and
frequency.

5. Operated for 48 hours with 12% overload at rated ambient
temperature with no resultant damage either electrically or
mechanically.

6. Subjected to severe vibration tests on a shake table for
a period of 2 hours in each of three perpendicular planes.

7. Subjected to 10 impact shocks of 50 gravitational units
acceleration in each of 3 mutually perpendicular planes.

8. Capable of operation in 65°C. ambient temperature with a
temperature rise not exceeding 40°C. except that the special
Class S units can operate in an 85°C. ambient with a
temperature rise not exceeding 45°C.
CTC-9198-Manual-Page-1-Picture


Manual Type Catalog CTC-9199-Manual-Page-1-Picture
Pages 32
Size 10.05 Mbytes (10536074 Bytes)
Language english
Revision
Manual-ID/Number CT-8-58
Date 01 January 1958
Quality Scanned document, all readable.
Upload date
MD5 0a2a0cbd56016c41a16c5959685c2734
Downloads 97 since 06 August 2017
Information
Transformers and Filter Reactors

MIL-T-27A
HERMETICALLY SEALED

NEW EQUIPMENT COMMERCIAL GRADE

CONTROL and POWER CIRCUIT

CHICAGO hermetically-sealed transformers are designed and
built in accordance with MIL-T-27A Grade 4, specifications
for Class R operation. Other units are listed for Class S
operation. All units fully meet the rigid requirements for
guided missile, military airborne and ground communications
equipment, marine equipment, and in any field where a
maximum of sealing quality construction is important. They
are especially useful in research and development
applications, pilot runs, and pre-production models.

To indicate the construction characteristics of this CHICAGO
transformer line, the MIL-T-27A specifications require that
the transformers be:

1. Temperature and Immersion cycled for 5 complete test
cycles of five steps each in temperatures varying from (Plus
85°C. for Class R; Plus 108°C. for Class S) to minus 55°C.
including a 25°C. saturated salt water immersion step.

2. Moisture resistance tested in temperatures varying from
plus 65°C. to minus 10°C. at 90-95% relative humidity for
ten 24 hour cycles extending over a ten day period.

3. Tested for insulation resistance in excess of 1000
megohms after being subjected to tests 1 and 2.

4. Tested on each winding at twice the rated A-C voltage and
frequency.

5. Operated for 48 hours with 12% overload at rated ambient
temperature with no resultant damage either electrically or
mechanically.

6. Subjected to severe vibration tests on a shake table for
a period of 2 hours in each of three perpendicular planes.

7. Subjected to 10 impact shocks of 50 gravitational units
acceleration in each of 3 mutually perpendicular planes.

8. Capable of operation in 65°C. ambient temperature with a
temperature rise not exceeding 40°C. except that the special
Class S units can operate in an 85°C. ambient with a
temperature rise not exceeding 45°C.
CTC-9199-Manual-Page-1-Picture


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