Rechercher

Applies, when required by the relevant product standard, to switchgear and controlgear hereinafter referred to as "equipment" and intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c. It states those general rules and requirements which are common to low-voltage equipment as defined in Subclause 1.1, including for example:…

This standard defines the data framing for an efficient simplex high-performance point-to-point interface. Characteristics of HIPPI-FP include: - large block data transfers with framing to split the data into smaller bursts; - separation of user control and data information, and early delivery of the control information; - identifiers for multiple upper-layer protocols (ULPs); - support for…

HES standards address both interoperability requirements, interconnectivity requirements and plug-compatibility requirements. Devices are described as interoperable if the functionality of the higher communication layers is such that commands can be exchanged and result in meaningful action. For interconnectivity it is sufficient to specify mechanical, electrical, and functional (lower layer…

A Simple Interface (SI) is an interface between devices and a home network in the Home Electronic System (HES). The SI type 1 connects simple devices offering and accepting only a two state signal to an HES home network. Two signals are available at the SI type 1. One is a control signal for turning the device on and off. The other is a monitor signal for checking the state of the device. This…

Applies to electromechanical air break contactors for household and similar purposes provided with main contacts intended to be connected to circuits the rated voltage of which does not exceed 440 V a.c. with rated operational currents less than or equal to 63 A for utilization category AC-7a and 32 A for utilization category AC-7b, and rated conditional short-circuit current less than or equal…

Applies to electromechanical air break contactors for household and similar purposes provided with main contacts intended to be connected to circuits the rated voltage of which does not exceed 440 V a.c. with rated operational currents less than or equal to 63 A for utilization category AC-7a and 32 A for utilization category AC-7b, and rated conditional short-circuit current less than or equal…

Gives guidance on the short-circuit maximum temperature limits of electric cables having rated voltages from 6 kV (Um = 7,2 kV) up to 30 kV (Um = 36 kV), with regard to the following: - insulating materials; - oversheath and bedding materials; - conductor and metallic sheath materials and methods of connection. The design of accessories and the influence of the installation conditions on the…

Gives guidance on the short-circuit maximum temperature limits of electric cables having rated voltages of 1kV (Um = 1,2 kV) and 3 kV (Um = 3,6 kV), with regard to the following: - insulating materials; - oversheath and bedding materials; - conductor and metallic sheath materials and methods of connection. The design and accessories and the influence of the installation conditions on the…

This International Standard specifies the mapping functions for a pair of on-demand inter-PINX connections using a circuit mode basic service and the supplementary service User-to-User Signalling (service 3) of a public ISDN at the same time. In order to connect a Private Integrated Services Network Exchange (PINX) to another PINX, mapping functions are required to adapt the specific interfaces…

This International Standard defines the mapping functions in exchanges of Private Integrated Services Networks (PISNs) required for the utilization of scenarios in which 64 kbit/s circuit mode connections are sub-multiplexed into 4 x 16 kbit/s channels for carrying inter-PINX signalling and user information. NOTE 1 - This International Standard has been prepared to meet the specific needs of an…