定价： 910元 / 折扣价： 774 元

定价： 2002元 / 折扣价： 1702 元

1.1 Scope 1.1.1 This standard applies to newly produced automatic gas ignition systems (see Part III, Definitions) and components thereof other than types utilizing low, extra low, or high voltages, constructed entirely of new, unused parts and materi

定价： 1138元 / 折扣价： 968 元

NoScope Available

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 1.1 This Standard applies to capacitor voltage transformers (CVT) intended to be connected between line and ground, comprising essentially a capacitor divider and an electromagnetic unit inter-connected as shown diagramatically in Figure 1. T

定价： 455元 / 折扣价： 387 元

1. Scope 1.1 This Standard covers material, manufacturing and dimensional requirements for untreated and treated round wood piles. 1.2 This Standard does not cover requirements for the preservative treatment of piles. Such requirements are detaile

定价： 364元 / 折扣价： 310 元

1. Scope 1.1 This part of IEC 79 specifies the requirements for the construction and testing of oil-immersed electrical apparatus, oil-immersed parts of electrical apparatus and Ex components in the type of protection "o", intended for use in potential

定价： 410元 / 折扣价： 349 元

1.1 Scope 1.1.1 This standard applies to newly produced gas appliance sediment traps hereinafter referred to as traps (see Part IV, Definitions), constructed entirely of new, unused parts and materials. Compliance of a trap with this standard does

定价： 4596元 / 折扣价： 3907 元