FAQ Search Results

A DIN rail is a 35-mm mounting rail which is also known as a top hat rail.

Electrochemical double layer capacitors or EDLCs are also known as supercapacitors or ultracapacitors.

An input inrush current is a current surge at the input of a power supply that occurs when the input capacitors are charged after the input voltage is applied. The inrush current must be kept to a minimum.

The adjustment range generally refers to the guaranteed trim range of the output voltage.

Electrostatic discharge or ESD is a spark or discharge resulting from a large potential difference in an electrically insulating material that causes a high and very brief electric current pulse. Power supplies have to comply with the minimum ESD requirements specified in EN 61000-6-2.

Flicker is a low-frequency effect on mains voltage caused by loads. For example, flicker leads to fluctuations in the brightness of lights and computer screens.

Hiccup is an overload behaviour at the outputs of power supplies. In the event of an overload or short circuit, the power supply switches off and makes periodic attempts to restart until the fault is rectified.

Hot plug or hot swap is the process of replacing components while they are in operation.

An inhibit input is a signal input that allows buffering in a DC-UPS or in a buffer module to be interrupted or prevented by means of an externally supplied voltage.

An inverter converts a direct current voltage (for example from a solar panel or a battery) into an alternating current voltage. Normally, the alternating current voltage produced by an inverter can be fed into the grid.

IO-Link was developed to retrieve signals from sensors and actuators (IO-Link devices) at the field level. These signals are imported via an IO-Link master into the corresponding field bus system and transmitted to the automation system.

IP protection classes determine the extent to which electrical equipment is protected from contact, foreign bodies and water. The numbers of the IP protection classes are defined in IEC/EN 60529 and consist of two digits. The first digit indicates the protection from contact and dust and the second digit the protection from the ingress of water.

Convection cooling is a passive form of cooling without forced ventilation from fans.

MTBF stands for mean time between failures and defines the statistical probability of an accidental device failure.

The nominal voltage is the specified system voltage of the supply circuit that the power supply is connected to. In the case of 3-phase systems, the nominal voltage is the voltage between the phase conductors.