This guide describes selection and application considerations for the unit power transformer and unit auxiliary power transformer. Consideration is given to connections that include direct connection and connections through generator circuit breakers and load-break switches. The considerations referred to in this guide apply to hydroelectric and thermal electric generating stations. Various power transformer connections and possible operating problems under normal and abnormal conditions are… read more treated. Phasing procedures, basic impulse insulation level selection, and loading practices are not covered. read less

定价： 79元 / 折扣价： 68 元

The specifications set forth in this standard are intended to define a physical interface for the interconnection of computers and medical devices. The scope of this standard is the Physical layer interface for cable-connected medical devices in the IEEE 1073 family of standards.

定价： 178元 / 折扣价： 152 元

This standard identifies the main assets and threats targeting operating systems used in connected vehicles. This standard defines the security requirements of the operating systems to support the core security functions in connected vehicles. This standard also establishes test methods to evaluate the security of operating systems in connected vehicles.

定价： 59元 / 折扣价： 51 元

The scope of this standard is an IrDA-based, cable-connected local area network (LAN) for the interconnection of computers and medical devices. This standard is suitable for new device designs, but is particularly targeted to modifications of legacy devices. The term "legacy devices" refers to equipment that is — Already in use in clinical facilities — In active production at the facilities of medical device manufacturers, or — Beyond the initial stages of engineering development In each of these cases, the degree of effort to add a standardized communications capability might normally be prohibitive, unless special care is taken in developing a suitable standard.

定价： 172元 / 折扣价： 147 元

This standard identifies the main assets and threats targeting operating systems used in connected vehicles. This standard defines the security requirements of the operating systems to support the core security functions in connected vehicles. This standard also establishes a set of test specifications to evaluate the security of operating systems in connected vehicles.

定价： 59元 / 折扣价： 51 元

This standard describes the security functional requirements (SFRs), which compose a protection profile (PP), for connected diabetes devices (CDDs). The scope of the PP within the development and evaluation process is described in ISO/IEC 15408.1 In particular, a PP defines the IT security requirements of a generic type of Target of Evaluation (TOE) and specifies the security measures to be offered by that TOE to meet stated requirements.

定价： 59元 / 折扣价： 51 元

This guide presents information regarding the essential subsystems that make up a fossil-feuled unit-connected boiler-turbine-generator (BTG) station and describes typical interlocking, control, and protection for operating them in a coordinated order to ensure proper start-up and safe shutdown. The primary purpose of this guide is to provide a basis for (1) Qualitative evaluating of overall design of a unit-connected fossil fuel plant (2) Writing general operating guides of an educational… read more nature, thereby serving to aid in acquainting personnel with boiler-turbine-generator systems. Every new fossil plant will have its own special operating sequence due to the type of equipment installed and its operating company's practices. However, this guide purports to include in one document a description of various cycles in a power plant, their sequence of operation, and protection procedures. The information contained in this guide should be coordinated with manufacturers' recommendations to establish individual plant designs. read less

定价： 116元 / 折扣价： 99 元

This standard defines a framework for a connected electronic product security evaluation program.

定价： 59元 / 折扣价： 51 元

To define an IrDA-based transport profile for medical device communications.

定价： 110元 / 折扣价： 94 元

This recommended practice applies to liquid-immersed power transformers that are connected to generators subjected to significant short duration increases in the volts per hertz (V/Hz) ratio.

定价： 56元 / 折扣价： 48 元

This standard applies to series-connected dry-type air-core single-phase and three-phase outdoor or indoor reactors of distribution and transmission voltage class that are connected in the power system to control power flow under steady-state conditions and/or limit fault current under short-circuit conditions. Dry-type air-core reactors covered by this standard are self-cooled by natural air convection. With some restrictions, this standard is applicable to filter reactors, shunt capacitor… read more reactors (used with shunt capacitor banks), and discharge current-limiting reactors (used with series capacitor banks). Annex A, Annex B, and Annex C are included to provide guidance. This standard does not apply to devices such as a) Shunt reactors (see IEEE Std C57.21(TM)-2008) b) Arc suppression coils c) Neutral grounding devices (see IEEE Std 32(TM)-1972 [B21]) d) Line resonant reactors e) High-voltage direct current (HVDC) smoothing reactors (IEEE Std 1277(TM)-2010 [B23]) f) Forced cooled reactors g) Line traps and radio interference (RI) filter reactors (ANSI C93.3-1995) read less

定价： 175元 / 折扣价： 149 元

Review entire document. Revise waveform tolerance to coordinate with IEC documents. Add new waveforms, such as 10/350 us, if found appropriate.

定价： 146元 / 折扣价： 125 元

This standard applies to series-connected dry-type air-core single-phase and three-phase outdoor or indoor reactors of distribution and transmission voltage class that are connected in the power system to control power flow under steady-state conditions and/or limit fault current under short-circuit conditions. Dry-type air-core reactors covered by this standard are self-cooled by natural air convection. With some restrictions, this standard is applicable to filter reactors, shunt capacitor… read more reactors (used with shunt capacitor banks), and discharge current-limiting reactors (used with series capacitor banks). Annex A, Annex B, and Annex C are included to provide guidance. This standard does not apply to devices such as a) Shunt reactors (see IEEE Std C57.21(TM)-2008) b) Arc suppression coils c) Neutral grounding devices (see IEEE Std 32(TM)-1972 [B21]) d) Line resonant reactors e) High-voltage direct current (HVDC) smoothing reactors (IEEE Std 1277(TM)-2010 [B23]) f) Forced cooled reactors g) Line traps and radio interference (RI) filter reactors (ANSI C93.3-1995) read less

定价： 161元 / 折扣价： 137 元

This recommended practice describes procedures for developing design-specific operational limits for liquid-immersed power transformers that are connected to generators or power systems that are subjected to significant short duration increases in the core excitation caused by significant changes in the voltage and/or frequency levels.

定价： 56元 / 折扣价： 48 元

This document provides specific requirements for field installed sealing between a pressurized system (stream) containing flammable or combustible process fluids which is connected directly or indirectly to an electrical system where a failure could allow the migration of process fluids directly into the electrical system. The basic requirements for electrical safety are not specifically addressed by this standard. The effects of the loss of containment of the process system in terms of risk to… read more the environment and/or personnel health and safety are also not addressed by this document. read less

定价： 56元 / 折扣价： 48 元