UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

ARMY - AR TM 5-688

FOREIGN VOLTAGES AND FREQUENCIES GUIDE

active, Most Current
Organization: ARMY
Publication Date: 12 November 1999
Status: active
Page Count: 31
scope:

This manual identifies the classes of electrical equipment that are sensitive to frequency and voltage variations. Appendix B covers identification of various low and medium voltage levels, along with the system frequencies, used by countries around the world. Derating factors are discussed and developed for the six generic types of equipment in chapter 3. Appendix C summarizes the derating factors presented in chapter 3 for different voltage and frequency environments.

Purpose.

This manual provides guidance required to identify the voltage and frequency standards of various foreign countries for both medium and low voltage systems. It also identifies the classes of equipment that are sensitive to voltage and frequency differences. Foreign countries around the world use different electrical standards for voltage and frequency than those of the United States. Some electrical equipment will operate properly at an electrical frequency of either 50 or 60 Hz. Equipment designed for 60 Hz that will not operate properly at 50 Hz is termed "50 Hz sensitive," and equipment designed for 50 Hz that will not operate properly at 60 Hz is termed "60 Hz sensitive."

Document History

AR TM 5-688
November 12, 1999
FOREIGN VOLTAGES AND FREQUENCIES GUIDE
This manual identifies the classes of electrical equipment that are sensitive to frequency and voltage variations. Appendix B covers identification of various low and medium voltage levels, along...

References

Advertisement