DANSK DSF/FPREN IEC 62962 PDF

This document applies to Load-Shedding Equipment (LSE) for household and similar uses. The load-shedding function is used in energy management systems to optimize the overall use of electrical energy including production and storage. Load-shedding can be used for example for energy efficiency purposes as per IEC 60364-8-1. This document applies to LSE for operation under normal conditions: – AC circuits with rated frequency of 50 or 60 Hz with a rated voltage not exceeding 440 V (between phases), a rated current not exceeding 125 A and a rated short circuit capacity not exceeding 25 000 A; or – DC circuits1. LSE are intended to control the energy supplied to one or more load, circuit or mesh when: – defined conditions of time and current (power) are reached; – a command by an external system is received. NOTE – to entry : A LSE that monitors the loads based on time and power conditions is a LSE able to monitor voltage fluctuations from the network in addition to the current. Refer to definitions and relevant LSE characteristics for analogies. A LSE is intended to serve as: – either as a single equipment having all the necessary means able to control the loads (e.g. the electrical energy management function is embedded in such an equipment); or – a unit integrated into a more complex equipment or an independent equipment being part of an Electrical Energy Management System (EEMS); or – an assembly of independent equipment forming a LSE (e.g. a LSE with external current sensors); or – as a combination of the above points. LSE may have a wireless interface. Examples of LSE are given in Annex A. LSE is part of the fixed installation. LSE are intended for use in circuits with protection against electrical shock and over-current according to IEC 60364 series. NOTE – 1 For example, fault protection (indirect contact protection) can be covered as follows: – in TT systems, by an upstream RCBOs or RCCBs according to IEC 61008-1 and 61009-1; – in a TN system, by an upstream over-current protective device. LSEs do not, by their nature, provide an isolation function nor the over-current protection. LSEs are normally installed by instructed persons (IEV 195-04-02) or skilled persons (IEV 195-04-01) and normally used by ordinary persons (IEV 195-04-03)