INSTRUCTION MANUAL
ZWP350-1000 Series
TDK-Lambda
<Page>
15/23
7-2. Peak Output
Continuous peak output duration must be less than or equal to 5 sec with duty not more than 45%. Peak
output power more than 5 sec will cause output to shutdown by delay shut down and manual reset of power
supply or remote control off/on is required to re-power on. Use power supply to satisfy (a) Peak Output
Condition, (b) Peak Output Power versus Duty and (c) Peak Output Power Versus Pulse Width of Peak
Output Power. In addition, the peak output condition must comply to all derating requirement : input voltage,
mounting direction, convection cooling and forced air cooling. When the peak output power is more than
800W, the pulse width of peak current (τ) must be less than or equal to 1 sec. When input voltage is less than
170VAC, output derating is required. Refer to (d) Output Derating curve according to the Input Voltage at
Peak Loading for details. The product might be damaged if use beyond the limits of (a) to (d). When using the
pulse load, a noise sound might be heard from power supply. In addition, it is able to confirm easily that if
peak loading condition is matched to the specification by the power matching chart on our website.
(a) Peak Output Condition
(b) Peak Output Power Versus Duty
This is representative curve at AC100V and AC200V.
For other input voltage condition, refer to power matching chart.
(c) Peak Output Power Versus Pulse Width of Peak Output Power
Wp
Wm
Wmin
τ
T
0W
Wp : Peak output power (W)
Wm : Rated output power (W)
Wmin : Output power at light load (W)
τ : Pulse width of peak output power (sec)
T : Period (sec)
D : Duty
Input voltage, Vin (VAC)
Peak output power
Peak pulse width, τ (sec)
85 ≤ Vin ≤ 265
800W
5
170 ≤ Vin ≤ 265
1000W
1
39
27
20
15
45
45
34
25
19
15
12
0
10
20
30
40
50
300
400
500
600
700
800
900
1000
D
U
TY
(
%
)
PEAK OUTPUT POWER (W)
AC100V
AC200V
