Caution, As tmodule_me tcel, 2rfv – HT instruments SOLAR I-V User Manual
Page 20
I-V400 - SOLAR I-V
EN - 18
5.2.3. Selection of the compensation relationship of temperature effects
This option allows selecting the relationship to be used to correct the measurements
performed according to the modules’ temperature. The following correction modes are
available:
-
T.mod.:
Correction factor Rfv2 related to PV module Temp. (Italian guideline CEI-82-25)
-
T.env:
Correction factor Rfv2 related to environment Temp. (Italian guideline CEI-82-25)
-
ndc:
PRp (Performance ratio for active power) corrected by PV module Temp.
CAUTION
If it’s performed a test according to Italian guideline it is recommended to select
“T.env.” correction
Corr.
Type
Temperature (Tcel)
PRp calculation
Ref.
T.mod.
as
Tmodule_Me
Tcel
C)
40
Tcel
(if
100
40)
-
(Tcel
-
1
C)
40
Tcel
(if
1
fv2
R
-
n
STC
p
ca
P
G
G
Rfv
P
PRp
2
CEI
82-25
T.amb.
800
Irr
20
Tamb
Tcel
NOCT
dc
as
Tmodule_Me
Tcel
n
ca
cel
p
STC
P
P
T
G
G
PRp
25
100
1
- - -
where:
Symbol Description Meas.
unit
p
G
Irradiance on PV module surface
2
W/m
STC
G
Standard Irradiance = 1000
2
W/m
n
P
Nominal Power = sum of all power module (Pmax ) included in the part of PV plant under test
kW
ca
P
AC Active Power measured
kW
2
Rfv
Thermal Coefficient factor
Absolute value of Pmax thermal coefficient
C
%/
NOCT
Normal Operating Cell Temperature (@ 800W/m
2
, 20°C, AM=1.5, vel. Aria =1m/s).
C
%/
For further details see § 11.1