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