MT/T 290-1992
Main performance test methods of intrinsically safe common electricity and automatic telephones in coal mines (English Version)

Standard No.

MT/T 290-1992

Language

Chinese, Available in English version

Release Date

1992

Published By

Professional Standard - Coal

Latest

MT/T 290-1992

Scope

This standard specifies the electroacoustic, electrical, hook, life and other main performance test conditions, test instrument requirements and test methods for intrinsically safe common power and automatic telephones used in coal mines. This standard applies to intrinsically safe public and automatic telephones for mining use (hereinafter referred to as "telephones"). Other telephones can also be referred to.

MT/T 290-1992 history

• 1992 MT/T 290-1992 Main performance test methods of intrinsically safe common electricity and automatic telephones in coal mines