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

1. Scope This standard specifies safety requirements for ballasts for discharge lamps such as high-pressure mercury vapour, low- pressure sodium vapour, high-pressure sodium vapour and metal halide lamps. Section One specifies general requirements and

定价： 910元 / 折扣价： 774 元

1. Scope This standard specifies general and safety requirements for starting devices (starters and ignitors) for tubular fluorescent and other discharge lamps for use on a.c. supplies up to 1 000 V at 50 Hz or 60 Hz which produce starting pulses not g

定价： 910元 / 折扣价： 774 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 electrically heated flexible appliances designed for the application of heat to a bed, or to the human body, such as blankets, pads and mattresses for household purposes, and to control units delivered with them.

定价： 2184元 / 折扣价： 1857 元

1. Scope 1.1 This Standard provides a calculation method for determining the output capacity of a residential space heating appliance or group of appliances, and the output capacity of a residential cooling appliance or group of appliances required to

定价： 683元 / 折扣价： 581 元

This PDF includes GI #2. 1. Scope 1.1 This Standard defines the requirements for performance, installation and application, and performance verification of mechanical ventilation systems. This Standard applies to systems that are capable of providi

定价： 774元 / 折扣价： 658 元

1. Scope 1.1 This Standard provides a method of presenting technical information relating to the selection of storage batteries for photovoltaic systems and to the precision of that information. Note: A distinguishing feature of photovoltaic (PV) pow

定价： 455元 / 折扣价： 387 元

1. Scope 1.1 This Code covers the minimum requirements for the installation of solar domestic hot water systems. 1.2 This Code applies to the installation of packaged solar domestic hot water systems supplied for year-round or seasonal heating of

定价： 455元 / 折扣价： 387 元

1. Scope 1.1 This Standard specifies requirements for the safety of wind energy conversion systems, including design and operation under specified environmental conditions. 1.2 This Standard is concerned with all subsystems of WECS, including pro

定价： 501元 / 折扣价： 426 元

1. Scope 1.1 This Standard describes zinc-coated steel wire strand suitable for use as guys, suspension strand, span wires, and overhead ground wire strand. Overhead ground wire strand for electric power transmission is produced free of wire joints.

定价： 364元 / 折扣价： 310 元

1 Scope and Field of Application This CSA Standard specifies delivery requirements which apply to the surface finish of hot-rolled plates and wide flats rolled on reversing mills, with nominal thicknesses equal to or less than 150 mm. For plates with

定价： 364元 / 折扣价： 310 元

定价： 1638元 / 折扣价： 1393 元

定价： 637元 / 折扣价： 542 元

CSA Preface This is the first edition of CAN/CSA-ISO 10002, Quality management - Customer satisfaction - Guidelines for complaints handling in organizations, which is an adoption without modification of the identically titled ISO (International Organiz

定价： 910元 / 折扣价： 774 元