7400DB1101
11/2011
Data Bulletin
Low Voltage Transformer Solution
for Infrared Scanning Applications
Class 7400
Retain for future use.
Bolted electrical connections can be tested for high resistance with any of
the following methods:
•
•
Using a low-resistance ohmmeter
•
Performing a thermographic survey
Verifying the tightness of accessible bolted electrical connections with a
calibrated torque-wrench
Low voltage transformers equipped with infrared windows let customers
perform thermographic surveys. The advantages of this method over the
other two are:
•
•
Facility operations aren’t disrupted since equipment remains in service
NFPA 70E requirements are more readily met since equipment panels
are not removed
Schneider Electric offers optional, infrared windows on enclosure styles D,
H, and E of all low voltage ventilated and non-ventilated transformers.
Styles D and H—NEMA 2 Rated
Converts to NEMA 3R with Weathershield
© 2011 Schneider Electric All Rights Reserved
Style E—IP55 Rated
™
Low Voltage Transformer Solution for Infrared Scanning Applications
Data Bulletin
7400DB1101
11/2011
Factory Installed
•
•
Scanning/viewing window located at high and low voltage terminals
Scanning port located at terminal for neutral connections
CAP Series—Industrial Grade Viewing Windows
•
Provides the flexibility to inspect line terminations points through a single
window
•
•
•
Metal frame with composite mesh
Viewing material made of durable polymer
Complies with the following industry standards and regulations:
— IEEE C37 20.0.a.3.6 (impact and load
— UL 746C (impact and flammability)
Scanning
window
Scanning
port
Schneider Electric USA, Inc.
1010 Airpark Center Drive
Nashville, TN 37217 USA
1-888-778-2733
www.schneider-electric.us
2
Electrical equipment should be installed, operated, serviced, and maintained only by
qualified personnel. No responsibility is assumed by Schneider Electric for any
consequences arising out of the use of this material.
Square D™ and Schneider Electric™ are trademarks or registered trademarks of
Schneider Electric. Other trademarks used herein are the property of their respective
owners.
© 2011 Schneider Electric All Rights Reserved