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should be connected to the protective earth terminal of the equipment. Also 2 mounting holes are should be connected to
the Chassis (Conductor) by metal spacer. If not, the conducted noise, radiation noise and output noise will increase.
Protective
Wire
Earth
Terminal
6. Wiring Method
(1) The output load line and input line shall be separated each other and twisted individually to improve noise.
(2) Use all lines as thick and short as possible to made lower impedance.
(3) Noise can be reduced by attaching a capacitor to the load terminals.
(4) For safety and EMI considerations, connect between
(5) Select the wire materials to the J.S.T connector as follows.
7. External Fuse Rating
Refer to the following fuse rating when selecting the external fuses that are to be used on input line. Surge current flows when line turns on.
Have to use slow-blow or time-lag type fuse, not fast-blow fuse. Fuse rating is considered by in-rush current value at line turn-on. Do not
select the fuse according to input current (RMS.) values under the actual load condition
ZWS50BAF : 3.15A
ZWS75BAF : 3.15A
ZWS100BAF : 3.15A
ZWS150BAF : 5.0A
ZWS300BAF : 6.3A
8. Before concluding that the unit is at fault
(1) Check if the rated input voltage is connected.
(2) Check if the wiring of input and output is correct.
(3) Check if the wire thickness is enough.
(4) Check if the output current and output wattage dose not over specification.
(5) Check if the output voltage control (V.ADJ) is properly adjusted. OVP might be triggered and output shut down.
(6) Audible noise can be heard when input voltage waveform is not sinusoidal wave.
(7) Audible noise can be heard daring Dynamic-Load operation.
(8) Ensure that a large capacitor is not connected on the output side. Please use within maximum capacitance shown below.
(ZWS300BAF is no specification.)
Model
ZWS50BAF・ZWS75BAF
ZWS100BAF・ZWS150BAF
N
L
Input
Chassis (Conductor)
INPUT WIRE
: AWG#22～AWG#18
OUTPUT WIRE : AWG#22～AWG#16
3.3V
10,000uF
15,000uF
-
terminal of input connector and protective earth terminal firmly.
Maximum external capacitance
5V
12V
5,000uF
-12-
TDK-Lambda
ZWS-BAF Series
Instruction Manual
+
Output
Metal spacers
15V
24V
2,000uF
No specification
48V
500uF
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