K33;L25 标准查询与下载

NF C45-200-121*NF EN 60255-121:2014 测量继电器和保护设备. 第121部分: 距离保护的功能要求

La présente partie de la CEI 60255 spécifie les exigences minimales relatives à l'évaluation fonctionnelle et à l'évaluation des performances de la fonction de protection à distance typiquement utilisée, sans s'y limiter, à des applications de lignes dans des systèmes électriques triphasés avec mise à la terre directe. La présente norme définit également comment documenter et éditer des essais de qualification.

Measuring relays and protection equipment - Part 121 : Functional requirements for distance protection

NF C45-200-27*NF EN 60255-27:2014 测量继电器和保护设备. 第27部分: 产品安全要求

La présente partie de la série CEI 60255 détaille les exigences de sécurité produit pour les relais de mesure et dispositifs de protection dont la tension assignée n'excède pas 1 000 V en courant alternatif avec une fréquence assignée jusqu'à 65 Hz ou 1 500 V en courant continu.Au-delà de ces limites, la CEI 60664-1 est applicable pour déterminer les distances dans l'air, les lignes de fuites et la valeur des tensions de tenue d'essai.

Measuring relays and protection equipment - Part 27 : product safety requirements

BS EN 60255-26:2005 继电器.量度继电器和保护装置的电磁兼容性要求

This part of IEC 60255 is applicable to measuring relays and protection equipment for power system protection, including the control, monitoring and process interface equipment used with those systems. This standard specifies the requirements for electromagnetic compatibility for measuring relays and protection equipment. For equipment not incorporating electronic circuits, for example electromechanical relays, tests according to this standard are not required. The requirements specified in this standard are applicable to measuring relays and protection equipment in a new condition and all tests specified are type tests only. 1 Emission The object of this standard is to specify limits and test methods, for measuring relays and protection equipment in relation to electromagnetic emissions which may cause interference in other equipment. These emission limits represent electromagnetic compatibility requirements and have been selected to ensure that the disturbances generated by measuring relays and protection equipment, operated normally in substations and power plants, do not exceed a level which could prevent other equipment from operating as intended. Test requirements are specified for the enclosure and power supply ports. 2 Immunity This standard is to specify the immunity test requirements for measuring relays and protection equipment in relation to continuous and transient, conducted and radiated disturbances, including electrostatic discharges. These test requirements represent the electromagnetic compatibility immunity requirements and have been selected so as to ensure an adequate level of immunity for measuring relays and protection equipment. NOTE 1 Safety considerations are not covered in this standard. NOTE 2 In special cases, situations will arise where the levels of disturbance may exceed the levels specified in this standard, for example where a hand-held transmitter is used in close proximity to measuring relays and protection equipment. In these instances, special precautions may have to be employed.

Electrical relays - Electromagnetic compatibility requirements for measuring relays and protection equipment

BS EN 60255-25:2000 继电器.测量继电器和保护设备的电磁辐射试验

This part of IEC 60255 specifies the general requirements for the measurement of radio-frequency emissions emanating from measuring relays and protection equipment for power system protection, including the control, monitoring and process interface equipment used with such systems. It is based on CISPR 22 (see annex A). The limits of acceptable conducted and radiated emissions are specified and test procedures described. The object of the tests is to confirm that the equipment being tested will not cause conducted or radiated emissions above specified levels which might affect the satisfactory operation of other equipment. Any equipment or part of equipment which has the primary function of radio transmission and/or reception is excluded from this standard. The requirements specified in this document are applicable to measuring relays and protection equipment in a new condition, and all tests specified are type tests only.

Electrical relays - Electromagnetic emission tests for measuring relays and protection equipment

BS EN 60255-8:1998 继电器.热继电器

Applies to dependent specified time relays which protect equipment, including motors, from electrical thermal damage. To be read in conjunction with BS EN 60255

Electrical relays - Thermal electrical relays

BS EN 60255-3:1998 继电器.与时间有关或无关的单输入励磁质量测量继电器

These relays have their operating time dependent or independent of the input energizing quantity. Thermal electrical relays are excluded.

Electrical relays - Single input energizing quantity measuring relays with dependent or independent time

BS EN 60255-22-2:1997 继电器.测量继电器和保护设备的电干扰试验.静电放射试验

Type tests to confirm that equipment being tested will not malfunction when energised and subjected to an electrostatic discharge.

Electrical relays - Electrical disturbance tests for measuring relays and protection equipment - Electrostatic discharge tests

BS 561:1951 铁路信号用3位置、双元交流线路继电器规范

2-element, 3-position relays for railway signalling circuits up to 250 volts. Mounting, mechanical clearances, bearings, coils, contact capacity, contact pressure, contact resistance, flexible connections, terminals and terminal markings, insulation tests, pick-up and drop away values, labelling and marking, finish, pointer scale.

Specification for alternating-current line relays double-element 3-position (for railway signalling)