Panasonic PDP006-Ver02 Flat Panel Television User Manual


 
<For System Sales Company / SI,SE>
No.PDP006-Ver02
POWER CONSUMPTION
OVERVIEW
Power Consumption-related items are described for installation of a plasma display.
RUSH CURRENT
l
A rush current is an instantaneous large current flowing at a time of
Power ON and depends on an input resistance of power supply circuit
(in parallel with a soft start relay).
MAXIMUM POWER CONSUMPTION & CURRENT
* Maximum Power Consumption
The power Consumption values described on the catalog resulted from
the measurement of power Consumption for a certain sound and
image for European models. The PDP must make every pixel
discharge light repetitively on a not-constant base, thus resulting in a
huge value of power Consumption.(US models)
* Maximum Current
Current can be normally found by the formula: Current A = Power P ÷
Voltage V, but it depends heavily on the power factor of a power
circuit.
*Values of the existing models
Max. Current (Approx.)
Power
Consumption
Max. Power
Consumption
Power
Factor
AC100v AC200v
TH-50PHD5 495W Approx. 550W
100
5.5A 2.8A
TH-42PHD5 375W Approx. 450W
100
5.0A 2.5A
TH-42PWD5 295W Approx. 395W
75
5.3A 2.7A
TH-37PWD5 225W Approx. 325W
70
4.4A 2.2A
CALORIFIC VALUE
Calorific Value[J]=Power Consumption[W]xTime[S] J=0.24cal
Calorific value per hour[Kcal/H] = 0.24xPowerConsumptionx3600
=Power Consumptionx0.864
* TH-42PWD5UY = 295Wx0.864 = 255[Kcal/H]
British Thermal Units VALUE
British Thermal Units = Power Consumption [W] 3.41 = [BTU/h]
* TH-42PWD5UY = 295 W 3.41 = 1,006 BTU/h
HEAT COOLING
* PDP operation conditions
Temperature: 0 deg 40 deg Humidity : 20% - 80%(not dewing)
NOTICE:
When it exceeds the above range, you have to consider cooling.
* Method of choosing a cooling fan
Operating airflow rate needed for cooling (Q)
PDP Power Consumption
20x [Temp inside the housing case - Housing case ambient Temp
NOTICE:
The formula is based on the assumption that heat eradication is
done by a cooling airflow of a fan.
Choice of a fan
Since the operating airflow is generally 1/2 to 2/3 the maximum
airflow, it is recommended that you choose the fan 1.5 to 2.0 times
the calculated airflow Q’.
Assuming that an operating airflow is 2/3 the maximum airflow, the
maximum airflow Q[m3/min]=Q’ x 3/2.
: Calculation example for placing TH-42PWD4 inside the housing:
* Power Consumption 295W
*Temp inside Housing Need to be below 40 deg
*Ambient Temp 35 deg (example)
*Operating airflow 2/3 the maximum airflow
Q = 295 / [ 20x(40-35) ) = 2.95 [m
3
/min]
Q = 2.95 x 3/2 = 4.425 [m
3
/min]
Heat tends to focus on the upper part. A fan had better be placed to
ventilate this area.
Example) Two fans whose maximum airflow is 2.3[m
3
/min]
or 3 fans whose maximum airflow is 1.5[m
3
/min.]
(Example) Ambient temp. =25 deg: Q’ = 0.98m
3
/min.
Ambient temp. =30 deg: Q’ = 1.48m
3
/min.
* Other cautions
Never fail to attach the fan the PDP inside.
The values mentioned above are the theoretical ones. You
are required to make enough tolerance in actual design and
to perform a mounting experiment at the time of studying.
When you study the outdoor use, you have to take into
account the heat inflow from outside such as solar heat.
PDP SE Referencece
Q
[m
3
/min]
=
*Plasma Display Panel Division
*TV System Products Division
*Overseas Solution Business Dept.
TH-42PWD5 for example:
Input resistance 3.4 ohm in US model
Soft start relay
TH-42PWD5 US model I=120Vx1.41/3.4 ohm= 49.8 [A]
If power is ON where a sine wave voltage is 0V, a rush current is
0 to maximum 49.8[A].
* TH-42PWD5 except US I=240Vx1.41/6.8 ohm= 49.8 [A]
* TH-50PHD5 US model I=120Vx1.41/6.8 ohm= 24.9 [A]