Module (Chassis mount) Type
PCB mount (On-board) Type
When selecting high voltage power supplies Please read before operation
- While the power supplies in this datasheet are designed and manufactured with high voltage safety in mind, always follow the operating instructions provided and ensure the power supplies are properly earthed (grounded) for safe operation.
- Unless they are input/output proportional type models rated 6kV or below, the power supplies in this datasheet are designed to be operated at ground potential. Models 6 kV and below of input/output proportional type must be operated within the dielectric voltage specified in the datasheet.
- External high voltage applied to power supplies in the datasheet can cause power supply failure. Protection circuits are there to protect power supplies from failures, and not to protect loads or devices connected to power supplies. If necessary, implement appropriate protective measures for devices connected to these high voltage power supplies.
Technical Note Input/output proportional type/Regulated high performance modules
The values of the specifications in the datasheet refer to values at maximum rating output (full scale) after 30 minutes warm-up unless otherwise specified.
Scope of application of specifications
For regulated modules, these specifications (Ripple, Regulation, Voltage setting accuracy, Temperature coefficient) apply under the conditions shown in Fig. 1.
For input/output proportional types, the horizontal axis is limited by the output voltage range (refer to the specific product's specification page).
Linearity: Applies from 10% to 100% of the output voltage, as illustrated in Fig. 2.
Cause of mis-operation and check list.
Power supply is not a device to be operated by itself, so proper operation might not be secured due to wrong operation or matching to load. Below table shows symptoms which are often considered a power supply failure. Please check these points before returning it to the factory.
| Symptom | Cause | Check point |
|---|---|---|
| No output voltage | Wrong connection (especially input side) | Check the connection again. |
| Output voltage does not increase | Insufficient input current | Try with proper input power supply |
| Input power supply has insufficient current capacity | ||
| Overcurrent condition | Check if voltage increases when no load is connected | |
| Output wire is broken | Check the conductivity | |
| Impedance of voltmeter to measure voltage monitor is not proper | Try with a voltmeter with over 10 MΩ impedance | |
| Voltage monitor is not correct | Impedance of the voltmeter used to measure the voltage monitor is inappropriate (too low) | Try with a voltmeter with over 10 MΩ impedance |
| Current monitor is not correct There is offset |
Measure with ammeter | |
| Impedance of voltmeter to measure current monitor is not proper | ||
| Offset voltage is not cancelled | Cancel the offset by referring to the example circuits in the datasheet | |
| Makes a high-frequency sound | Overcurrent condition | Check if there is still sound with rated load or without load |
| Ripple noise is larger than the datasheet specification | Noise is being introduced from external sources | Try with input power supply with no noise |
| Shield the input wire | ||
| Ensure single-point grounding | ||
| Keep away from noise source |