ABB Switzerland Ltd
5.2.1.
Power definitions
5.2.1.1.
Mean power
The mean power of a signal with voltage x(t) is given by
P
mean
where R
measured.
5.2.1.2.
Peak power
The peak power of a signal with voltage x(t) is given by
P
(
peak
where R
measured.
5.2.1.3.
Peak envelope power (PEP)
The peak envelope power (PEP) of a signal with voltage x(t) is equal
to the mean power of a sine wave that has the same peak power as
x(t).
P
(
x
PE
where R
measured.
The PEP has been defined by IEC60495 as a measure for the usable
output power of a PLC power amplifier.
5.2.2.
Voltage definitions
5.2.2.1.
RMS voltage
The RMS (Root Mean Square) voltage of a signal with voltage x(t) is
given by
U
RMS
5-2
1KHW001489-EN
⎧
1
1
∫
=
⎨
(
x
)
lim
⎩
→
∞
R
T
T
0
is the impedance at the point where the voltage x(t) is
0
[
1
=
2
x
)
max
x
(
t
R
0
is the impedance at the point where the voltage x(t) is
0
1
=
)
P
(
x
)
peak
2
[
1
=
2
max
x
(
2
R
0
is the impedance at the point where the voltage x(t) is
0
⎧
1
∫
T
=
⎨
(
x
)
lim
⎩
−
→∞
T
T
November 2005
⎫
T
2
2
⎬
x
) (
t
dt
⎭
−
T
2
]
−
∞
<
<
∞
),
t
]
−
∞
<
<
∞
t
),
t
⎫
2
2
⎬
x
) (
t
dt
⎭
T
2
Configuration and Set-up
ETL600
(1)
(2)
(3)
(4)