Power Definitions; Mean Power; Peak Power; Peak Envelope Power (Pep) - ABB ETL600 Instruction Manual

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)