
Specification for motor starters for voltages up to and including 1000 V a.c. and 1200 V d.c. Reduced voltage a.c. starters, two-step auto-transformer starters
出版:British Standards Institution

專家解讀視頻
mead in conjunction with BS 4941:Part 1.
? British Standards Institution 2013
Replaces notes:
Replaces the requirements for reduced voltage a.c. starters, two-step auto-transformer starters for voltages up to and including 1000 V a.c. in BS 587:1957.
IEC 292-4 Ed. 1.0 - Identical