摘要:
A switchgear cabinet with a central control device for monitoring and controlling built-in units and/or attached units of the switchgear cabinet in a predetermined manner. A simple adaptation to various requirements is offered here, because central control device has components of a personal computer, through which it is programmable and by means of which monitoring, control and/or regulation takes place in accordance with predetermined programs.
摘要:
A switchgear cabinet monitoring arrangement with a control device for monitoring switchgear cabinet functions, including a door position, and for generating monitoring signals for signaling to and/or controlling components relating to the switchgear cabinet functions and installed in the switchgear cabinet or on the switchgear cabinet. A simple and compact design is achieved because the control device is limited to monitoring preselectable threshold values, a door position switch is installed on or in the device housing, and the device housing has one or several indicator elements which react with a visual or acoustic indication when at least one threshold value is upwardly or downwardly exceeded.
摘要:
A method and a device for detecting leaks in components conducting liquids by a sensor reacting to leaks. The component to be monitored is inserted into a closable envelope containing the leaked liquid. Electrodes are embedded into the envelope. The resistance and/or the capacitance between the electrodes is changed if leaking liquid enters the closed envelope. With a sensor connected to the electrodes, which reacts to the resistance and/or capacitance changes, a display and/or alarm signal is triggered. It is possible to monitor the entire component for leaks.
摘要:
A switchgear cabinet monitoring and control arrangement with several switchgear cabinet monitoring and control devices connected to a network, and with at least one personal computer, which is in communication with the devices through the network. Simple operation is achieved because the at least one personal computer is connected to the network by a web browser. A server is assigned to a group of the switchgear cabinet monitoring and control devices, in which a management device containing information regarding the switchgear cabinet monitoring and control devices stored therein and including their respective identification, is arranged. The information can be called up using the at least one personal computer.
摘要:
A switchgear cabinet assembly or rack assembly including an electric supply device that can be or is connected to a primary power supply. Equipment that is housed in at least one switchgear cabinet or rack on the user side, or equipment that is to be supplied with electricity can be or is connected to the electric supply device. To achieve simple and reliable connection options, a sub-distribution device is located in the switchgear cabinet or rack or in a separate cabinet or rack. The device has at least one sub-distribution unit that can be or is connected to the primary power supply, having a housing or frame and being retained and secured by a mounting unit. According to this invention, the sub-distribution unit can be or is connected to primary supply lines that lead to the primary power supply and to pre-fabricated connection lines that lead to the rack.
摘要:
A liquid cooling system having cooling units individually assigned to electronic component groups housed in a rack or a switchgear cabinet, which are to be cooled, and having a monitoring and control arrangement for monitoring a cooling temperature. Effective cooling and temperature monitoring is obtained because the cooling units are liquid cooling units and are connected via branch points to a common central liquid line system integrated into the rack or the switchgear cabinet. The control and monitoring arrangement is for monitoring the cooling temperature in the central liquid line system and for emitting an error signal when a predetermined or a predeterminable threshold temperature in a liquid return branch is exceeded, or when a predetermined or predeterminable threshold temperature difference between a temperature in an inlet branch and a temperature in the return branch is exceeded, or when the liquid flow falls below a predetermined or predeterminable threshold value.
摘要:
A switchgear cabinet monitoring arrangement having a base monitoring device which is arranged or intended to be arranged in a switchgear cabinet and has at least one bus connection, several sensor connections and at least one triggering connection, for monitoring, controlling and/or regulating switchgear cabinet functions. Various monitoring and control functions of several different switchgear cabinets, along with a relatively simple construction, are achieved because a further monitoring device arranged or to be arranged in a respective further switchgear cabinet is assigned to the base monitoring device, which is connected to the base monitoring device by a field bus. The further monitoring device also has several sensor connections and at least one triggering connection and is designed for monitoring, controlling and/or regulating switchgear cabinet functions.
摘要:
A switchgear cabinet air conditioning device having at least one cooling device, which has a cooling device control and a connected operating device. A simple operability is achieved because the operating device has a server which is assigned to the cooling device control, and has a network connection as well as at least one personal computer, which is connected via the network connection and via a universally accessible network and has an assigned web browser, by which the data retrieved from the server can be visually displayed.
摘要:
A fan cooler for electric or electronic sub-assemblies having a control circuit with a control stage for controlling the speed of rotation of a fan motor connected to the control stage depending on set values. To achieve a polyvalent operation with a simple design, the fan motor is a phase-controlled asynchronous motor, the control circuit has a microcontroller that controls the control stage, an optic coupler is connected between the control stage and the microcontroller, and the microcontroller determines the operating angle for controlling the fan motor on the basis of the set values and the zero crossing of a control signal.
摘要:
A power supply assembly including a plurality of power supply modules which can be operated in parallel and are inserted or can be inserted into a common switch cupboard or rack or into a plurality of switch cupboards or racks, each power supply module having an inverter branch for continuously supplying electric power to a load at the output in a load branch. The power supply assembly also has a bypass assembly that ensures the power supply when power supply through the inverter branch fails or is insufficient. The reliability of the power supply is enhanced if each of the power supply modules has a bypass which is connected to the load branch, in parallel to the inverter branch. The bypass is separated from the load branch when the inverter path works properly and in the event of failure of an inverter branch, can be automatically connected by a control circuit to the load branch in order to maintain power supply.