8
en
Switching on
Switching off
~ or a. c.
Alternating current
1 ~
Alternating current, single-phase
Symbol, character
Explanation
Character
Unit of measurement,
national
Explanation
n
rpm; /min; min
-1
;
r/min
Rated speed
P
W
Electrical power
°
Angle width
U
V
Electric voltage
f
Hz
Frequency
I
A
Electric current intensity
m
lbs
Mass
l
ft, in
Length, width, height, depth, diameter or thread
Ø
ft, in
Diameter of a round part
m, s, kg, A, mm, V,
W, Hz, N, °C, dB,
min, m/s
2
Basic and derived units of measurement from the
international system of units
SI
.
