定价： 546元 / 折扣价： 465 元

1 Scope This part of IEC 60974 is applicable to power sources for arc welding and allied processes designed for industrial and professional use, and supplied by a voltage not exceeding that specified in table 1 of IEC 60038, or driven by mechanical means

定价： 1729元 / 折扣价： 1470 元

No Scope Available

定价： 273元 / 折扣价： 233 元

Amendment 1 Lamp controlgear - Part 2-3: Particular requirements for a.c. supplied electronic ballasts for fluorescent lamps | Modification 1 Appareillages de lampes - Partie 2-3: Prescriptions particulières pour les ballasts électroniques alimentés en co

定价： 501元 / 折扣价： 426 元

1 Scope Replacement: This International Standard deals with all aspects of safety such as electrical, thermal and mechanical. This part 2-13 of IEC 61558 applies to stationary or portable, single-phase or polyphase, aircooled (natural or forced), i

定价： 455元 / 折扣价： 387 元

1 Scope Replacement: This part 2-2 of IEC 61558 applies to stationary or portable, single-phase or poly-phases, aircooled control transformers associated or otherwise having a rated supply voltage not exceeding 1 000 V a.c. or 1 415 V ripple free d.c.

定价： 410元 / 折扣价： 349 元

1 Scope Replacement: This part 2 of IEC 61558 applies to stationary or portable, single-phase or polyphase, air-cooled isolating transformers, associated or otherwise, having a rated supply voltage not exceeding 1000 V a.c. and rated frequency not e

定价： 455元 / 折扣价： 387 元

1 Scope Replacement: This part 2 of IEC 61558 applies to stationary or portable, single-phase or polyphase, aircooled safety isolating transformers, associated or otherwise, having a rated supply voltage not exceeding 1000 V a.c. and rated frequency n

定价： 455元 / 折扣价： 387 元

1. Scope and Object 1.1 This International Standard is applicable to thermal-links, intended for incorporation in electrical appliances, electronic equipment and component parts thereof, normally intended for use indoors, in order to protect them agai

定价： 819元 / 折扣价： 697 元

FOREWORD This amendment has been prepared by sub-committee 32C: Miniature fuses, of IEC technical committee 32: Fuses. AVANT-PROPOS Le present amendement a ete etabli par le sous-comite 32C: Coupe-circuit a fusibles miniatures, du comite d'etudes 32

定价： 319元 / 折扣价： 272 元

1. Scope This clause of Part 1 is replaced as follows: 1.1 This standard applies to automatic electrical controls for electrical household appliances within the scope of IEC Publication 33 5-1 and its relevant Part 2s. Where for a specific control,

定价： 728元 / 折扣价： 619 元

FOREWORD This amendment has been prepared by IEC technical committee 72: Automatic controls for household use. The text of this amendment is based on the following documents: FDIS: 72/362/FDIS Report on voting: 72/377/RVD Full information on the voting

定价： 182元 / 折扣价： 155 元

Amendment 1 to CAN/CSA E730-2-2-94.

定价： 182元 / 折扣价： 155 元

Amendment 2 to CAN/CSA-E730-2-2-94

定价： 228元 / 折扣价： 194 元

FOREWORD This amendment has been prepared by IEC technical committee 72: Automatic controls for household use. AVANT-PROPOS Le présent amendement a été établi par le comité d'études 72 de la CEI: Commandes automatiques pour appareils domestiques.

定价： 228元 / 折扣价： 194 元