Handling instruction of rugged PCB power supplies is different from that of unit type(with chassis) power supplies. Please keep in mind the following in handling the PCB type.
1. Rated input voltage |
 |
|
 Input voltage range varies depending on a model. Applying the wrong/reverse voltage severely damages the power supplies. |
|
2. Leakage current |
|
|
 Leakage current flows between power supply wires and earth ground within the rated value. In case of the multiple operation, however, the total leakage current will be the sum of the leakage current flows from each power supply.
|
|
3. Wires |
|
|
 Rated voltage and current varies depending on a wire. It is necessary to use thick wires, which cover the rated output current of a power supply. |
|
|
4. Earth |
|
|
 The earth terminal of power supply should be connected to the equipment where power supply is placed as thicker and shorter to protect electric shock or noise interference.
|
|
5. Fuse |
|
|
 When the internal fuse is blown, a power supply is most likely damaged. If this happens, please ship the unit back to us for repair.. |
|
|
6. High Voltage |
|
|
 Some parts are generating high voltage inside the power supply. Please do not touch by hand.
|
|
Generally, switch mode power supplies are designed to operate at controlled environment (e.g. inside the office). Therefore, power supplies should have a special care depending on an operating environment. 1. Environment where some measures need to be taken |
|
1. Water/Humidity |
|
|
 When the unit is operated where water drops into the power supply, it may cause failure. In this case, please arrange water proofing. |
|
2. Dust |
|
|
 When the unit is operated at dusty place,it sometimes causes failure of fan. In this case, please consider about dust proof measure.
|
|
3. Gas |
|
|
When the unit is operated in an atmosphere with corrosive gas, it may cause failure.
 |
|
2. Measures To take measures below is suggested when units are used in the environment above. |
|
1. Using units in the environment where units get watered or humidity is very high. |
|
|
1) Semi-standard C(coating)
2) Stronger type than semi-standard C(Minor changed unit) |
|
2. Using units in the environment where something conductive is dropped into a unit. |
|
|
1) Install air filter to an exhaust part.
2) Semi-standard C(coating)
3) Stronger type than semi-standard C(Minor changed unit)
1. Attaching tube and silicon rubber to high voltage part.
2. Attaching isolation cover to high voltage part.
|
|
3. Using units in the environment where some gas get into units. |
|
|
1) Some corrosive gas cause units to be failed. Please contact us.
The above may not be perfect measures. Please contact us about details. |
|
4. Vibration/Impact |
|
|
When installing the power supply at where vibration or impact are given, please make a certain measure about the vibration or impact.
 |
|
5. Temperature |
|
|
Power supply itself has a lifetime,and this depends on ambient temperature.When operated continuously in long period,an overhaul is recommended.
 |
|
6. Electromagnetic field |
|
|
When the unit is operated in an excessive strength of electromagnetic field, it may cause failure.
 |
