TDK-Lambda EVS300W Series, Instruction Manual

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INSTRUCTION MANUAL
EVS300W/600W
Series
TDK­Lambda
<Page>
4. Explanation of Functions and Precautions
4­1. Input Voltage Range
EVS300W:Input voltage range is single phase 85­265VAC (47­63Hz) or 120­370VDC.
EVS600W:Input voltage range is single phase 85­265VAC (47­63Hz) or 120­330VDC.
Input voltage, which is out of specification, might lead the product damage. For cases where conformance to
various safeties required, described as 100­240VAC (50­60Hz).
EVS300W:Output derating is required for AC input voltage less than 90VAC.
EVS600W:Output derating is required for AC input voltage less than 110VAC.
4­2. Output Voltage Range
Output voltage is set at the rated value. Output voltage within the range specified can be adjusted by V.ADJ
trimmer. Please set output voltage within specified adjustable range.
Turning the trimmer clockwise, the output voltage will be increased. Take note when the output voltage is
increased. excessively, over voltage protection (OVP) function may trigger and voltage will be shut down.
Furthermore, when increasing the output voltage, reduce the output current as not to exceed the maximum
output power.
When the trimmer turns quickly at no load condition, the output voltage might become unstable. To maintain
the output voltage stable, flow the output current, or remove the input of the product until the output be shut
down, and then re­input. Please turn the trimmer slowly during the output voltage adjustment.
4­3. Inrush Current
Inrush current is suppressed by power thermistor for EVS300W. Higher current will flow at higher ambient
temperature or input re­turn on condition. Please select input switch or external fuse carefully. The inrush
current value specified in the specification is under cold start condition (at 25
o
C).
Inrush current is suppressed by thyristor for EVS600W. Higher current may flow when input turn on interval is
short. First inrush current and second inrush current flow. The inrush current value in the specification is first
inrush current. Please select input switch and external fuse carefully.
4­4. Over Voltage Protection (OVP)
The OVP function is inverter shut down method and manual reset type. OVP function operates within 110­130%
of nominal output voltage.
When OVP triggers, the output will be shut down. To reset OVP, remove the input of the product for a few
minutes, and then re­input. In addition, the setting value of OVP is fixed and not adjustable. Never apply higher
voltage externally to the output terminal to avoid the product Failure. In case of inductive load, put protective
diode in series to the output power line.
4­5. Battery Charger Applications
It is possible to set constant current value of the product and use it for battery charger applications.
Connect our reverse prevention module "EVS­RP" or an ORing­diode to the output side of the product.
Use a protective circuit with a fuse or a breaker etc. to prevent the situation that severe electric current
drifts from the battery to the product side.
When connecting ORing­diode, heat will be generated by power losses due to diode forward voltage Vf
and output current Io (Pd = Vf × Io). Therefore, the diodes must be cooled.
In addition, please use the product within the rated output voltage and output power specification.
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Specification of reverse prevention module
Model : EVS­RP6020 (TDK­Lambda)
Input Voltage Range ： 7 – 60 [VDC]
Maximum Input Current
：
20 [A]
Voltage drop ： 200 [mV]
Reverse Current ： 50 [uA]
Size ： 50×26×77.5 [mm]
loss: Pd = Vf × Io
－
＋
Output
Terminal
＋
－
load
Io
Vo Vo ­Vf
◆
When connecting ORing­diode