标准摘要
[中文适用范围]： 本标准规定了功能安全要求，基于IEC 61508标准系列，用于实现绝缘监测装置（IMD）（如IEC 61557-8所述）和绝缘故障定位系统（IFLS）（如IEC 61557-9所述），属于IEC 61508-1生命周期第10阶段。这些装置为IT系统提供安全相关功能。本标准仅关注旨在降低IMD和IFLS使用过程中功能风险的功能安全要求；仅限于直接源于设备本身或多个IMD或IFLS协同工作产生的风险；旨在定义装置提供的基本安全功能。本标准不涉及：IEC 61010-1所述的电气安全及IEC 61557-8和IEC 61557-9的要求；特定IMD或IFLS使用的危害和风险分析；IMD或IFLS所用应用中所有安全功能的识别；IMD或IFLS的制造过程。功能安全要求取决于应用，应视为特定应用整体风险评估的一部分。IMD和IFLS的供应商不对应用负责。应用设计者负责风险评估，并规定整个IT系统的整体功能安全要求，当安全功能属于IT系统功能安全评估的一部分时，应选择合适的功能安全等级（SIL）。 [外文原描述]： IEC 61557-15:2014 specifies requirements related to functional safety and is based on the IEC 61508 standard series for the realization of Insulation Monitoring Devices (IMD) as specified in IEC 61557-8 and for Insulation Fault Location Systems (IFLS) according to IEC 61557-9, according to phase 10 of the IEC 61508-1 lifecycle. These devices provide safety related functions for IT systems. This part of IEC 61557 is - concerned only with functional safety requirements intended to reduce the functional risk during the use of IMDs and IFLSs; - restricted to risks arising directly from the device itself or from several IMDs or IFLSs working together in a system; and - intended to define the basic safety functions provided by the devices. This part of IEC 61557 does not - deal with electrical safety according to IEC 61010-1 and the requirements of IEC 61557-8 and IEC 61557-9; - cover the hazard and risk analysis of a particular use of the IMD or IFLS; - identify all the safety functions for the application in which the IMD or IFLS is used; and - cover the IMD or IFLS manufacturing process. Functional safety requirements depend on the application and should be considered as part of the overall risk assessment of the specific application. The supplier of IMDs and IFLSs is not responsible for the application. The application designer is responsible for the risk assessment and for specifying the overall functional safety requirements of the complete IT system and he should select the functional safety level (SIL) of the IMD and/or IFLS when their safety function is part of the functional safety assessment in the IT system. This publication is to be read in conjunction with IEC 61557-8:2007 and IEC 61557-9:2009 .
英文名称Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 15: Functional safety requirements for insulation monitoring devices in IT systems and equipment for insulation fault location in IT systems