.橡.PDP006v2 Display Power Consumption

PDP006-Ver02 to the manual 8e569427-e2b3-49fb-931d-b2af21bdc185

User Manual: - Display Power Consumption

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<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]
１
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]

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