定价： 481元 / 折扣价： 409 元 加购物车

定价： 975元 / 折扣价： 829 元 加购物车

定价： 481元 / 折扣价： 409 元 加购物车

定价： 689元 / 折扣价： 586 元 加购物车

This PDF includes GI #2. 1. Scope 1.1 This Standard applies to the performance of instrument current and voltage transformers of the types generally used in the measurement of electricity and the protection and control of equipment associated with

定价： 637元 / 折扣价： 542 元

1. Scope Section A - Transformers for Luminous-Tube Signs A1.1 This section applies to transformers for luminous-tube signs of portable and stationary types, for potentials up to and includ ing 600 volts low-potential, and l5,000 volts open-circuit

定价： 546元 / 折扣价： 465 元

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

定价： 364元 / 折扣价： 310 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.

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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 2-5 of IEC 61558 applies to shaver supply units, embodying one or more socketoutlets and a single phase air cooled isolating transformer, having a rated supply voltage not exceeding 250 V a.c., a rated output not less th

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 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