Safety Instructions

Make sure to read the user manual and application notes delivered with the power supply before use.

1. Always make sure to properly connect the protective earth of the device under test, especially for class 1 devices. Take care to use the appropriate wire gauge according to the valid standards and assure a safe connection of all mains wires.
   
   
2. When applying high currents to external wire connections make sure to use an appropriate wire gauge. For outputs which are connected on mutliple pins, always make use of all provided output pins to avoid overloading single contacts.
   
   
3. When using power supplies with internal galvainc insulation between inputs and ouput make sure not to externaly shorten this insulation to keep the necessary safety margins. This is of extreme importance for mains powered supplies (AC/DC converters).
   
   
4. Never connect or disconnect the power supply when input voltages or output loads are connected unless otherwise stated in the product documentation. Power supplies built for parallel operation are usually not subject to this safety measure as they are internally equipped with the corresponding safety circuits.
   
   
5. Unless stated otherwise in the product specification cooling is done by natural convection. Do not  over the venting slots of the case to ensure proper air flow through the device. Take care of the proper orientation of the power supply. Misuse of these safety measures may lead to severe damange to either the device or its surroundings by overheating.
   
   
6. To avoid the risk of fire and shock hazard do not expose the power supplies to moisture or rain. Do not open or through any parts into the case. No user servicable parts are inside.
   
   
7. Caution: To prevent the risk of fire replace fuses only with the same type and rating.
   

Sense Leads

The parameters given in the data sheet of a regulated power supply usually reach their optimum value with regards to output regulation, temperature drift and settling time when measured right at the output connector pins.

These parameters when seen from the load side may decrease with the distance between the power supply output and the load input. This depends on many parameters, the most important of them beeing the length of the connection and the wire gauge used. Sense leads are used to compensate this voltage drop on the load lines by providing a direct "drop-less" connection between the power supply and the load.

For optimum operation the sense leads should be as short as possible. In the case of wired connections use a twisted pair connection, when using a backplane the sense leads should be routed as a differential pair. When not used the sense inputs should be bridged to the corresponding power output at the output connector of the supply unit.

If not stated otherwise, the max. allowed voltage drop for most of our power supplies is 5 percent of the nominal output voltage. In case that the load lines are disconnected from the power supply, make sure that the sense leads are also disconnected. Severe damage to both the power supply and your application may result in not taking care of this.

Mounting Instructions

The power supplies are designed to work in dry and dustfree surroundings. If you need special countermeasures against dust or moisture contact us for assistance.

When used in ambient conditions with big temperature changes where condensation may happen, make sure to leave enough time before repowering the unit. Severe damage may result when powering up the unit while there is condensed water left inside the power supply.