1 Scope This European standard specifies requirements and test methods only for hoists and body support units intended for the transfer of disabled persons as classified in EN ISO 9999:1998: 12 36 03 Wheeled hoists with sling seats 12 36 06 Wheeled ho

定价： 1138元 / 折扣价： 968 元

1. Scope This standard applies to zinc-coated steel wires used in the construction and/or reinforcement of conductors for overhead power transmission purposes. It is intended to cover all wires used in constructions where the individual wire diameters,

定价： 455元 / 折扣价： 387 元

1. Scope This part of IEC 79 prescribes the specific requirements for construction and testing of electrical apparatus, parts of electrical apparatus and Ex components which have rated voltages not exceeding 11 kV with the type of protection encapsulat

定价： 1092元 / 折扣价： 929 元

1. Scope and Object This standard 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 1000 V

定价： 2321元 / 折扣价： 1973 元

Update No.1 is included in the PDF 1 Scope [Replace this clause with the following] 1.1 This Standard specifies the electrical and mechanical characteristics of round wire concentric lay overhead electrical stranded conductors made of combinations

定价： 1047元 / 折扣价： 890 元

1 Scope [Replace this clause with the following] This Standard covers the electrical and mechanical characteristics of round wires of aluminium 1350-H19, having diameters of 1.25 to 6.50 mm, intended for stranding into overhead conductors to be used for

定价： 273元 / 折扣价： 233 元

定价： 1092元 / 折扣价： 929 元

定价： 229元

1. Scope This standard specifies general and safety requirements for electronic ballasts for use on a.c. supplies up to 1000 V at 50 Hz or 60 Hz with operating frequencies deviating from the supply frequency, associated with tubular fluorescent lamps a

定价： 1047元 / 折扣价： 890 元

1. Scope 1.1 This standard applies to electric motor-operated or magnetically-driven tools, intended for indoor and for outdoor use, which have all the following characteristics: (a) easily moved by one person, simple devices to facilitate transpor

定价： 2412元 / 折扣价： 2051 元

1 Scope This part of IEC 60974 specifies safety and performance requirements for industrial and professional equipment used in arc welding and allied processes to feed filler wire. The wire feeder may be a stand-alone unit which may be connected to a sep

定价： 728元 / 折扣价： 619 元

1. Scope This standard specifies the safety and interchangeability requirements, together with the test methods and conditions, required to show compliance of tubular fluorescent and other gas-discharge lamps with integrated means for controlling start

定价： 1047元 / 折扣价： 890 元

CSA Preface This is the first edition of CAN/CSA-Z8835-5, Inhalational anaesthesia systems - Part 5: Anaesthetic ventilators, which is an adoption, with Canadian deviations, of the identically titled ISO (International Organization for Standardization)

定价： 728元 / 折扣价： 619 元

1. Scope This clause of part 1 is replaced by: This standard deals with the safety of milking machines to be used in stalls and in the open, which are designed for milking farm animals, such as cows, the rated voltage of the milking machine being no

定价： 546元 / 折扣价： 465 元

1. Scope This standard covers ballasts, excluding resistance types, for use on a.c. supplies up to 1 000 V at 50 Hz or 60 Hz, associated with tubular fluorescent lamps with or without pre-heated cathodes operated with or without a starter or starting d

定价： 1456元 / 折扣价： 1238 元