Electrical installations

The scope of this document is to provide guidelines for consistant and standard applications for voltage and power quality requirements on or connected to HOL’s distribution system. Normally voltage limits, voltage distortion, and current distortion are measured at the customer’s Point of Supply as per HOL document ECS0012. This document does not cover the following power quality issues: • Voltage control when the Independent Electrical System Operator (IESO) has declared a voltage reduction or an electrical system emergency; • Non-standard conditions such as a force majeure (e.g.

1.1 Scope This standard establishes nominal voltage ratings and operating tolerances for 60-hertz electric power systems above 100 volts. It also makes recommendations to other standardizing groups with respect to voltage ratings for equipment used on power systems and for utilization devices connected to such systems. This standard includes preferred voltage ratings up to and including 1200 kV maximum system voltage, as defined in the standard.

The standard is applicable to mains- or battery-powered information technology equipment, including electrical business equipment and associated equipment, with a RATED VOLTAGE not exceeding 600 V. Also applicable are components and subassemblies intended for incorporation in information technology equipment. It is not expected that such components and subassemblies comply with every aspect of the standard, provided that the complete information technology equipment, incorporating such components and subassemblies, does comply.

The standard is intended to be a basic functional safety standard applicable to all kinds of industry. It defines functional safety as: “part of the overall safety relating to the equipment under control (EUC) and the EUC control system which depends on the correct functioning of the E/E/PE safety-related systems, other technology safety-related systems and external risk reduction facilities.”

This standard specifically applies to UPS with an electrical energy storage device in the DC link. It is used with IEC 60950-1, referred to in this standard as reference document (RD). It is applicable to UPS that are movable, stationary, fixed or for building-in, for use in low-voltage distribution systems and intended to be installed in any operator accessible area or in restricted access locations as applicable. It specifies requirements to ensure safety for the operator and layman who may come into contact with the equipment and, where specifically stated, for the service person.

The standard applies to a micro power plant which is the electric energy generation subsystem associated with a decentralized rural electrification system. It provides general requirements for the design, erection and operation of micro power plants and general requirements to ensure the safety of persons and property. The plants covered by this specification are low-voltage AC, three- or single-phase, with rated capacity less than or equal to 100 kVA.

A flow battery is an electrolyte cyclical form battery, and a rechargeable battery mainly applicable to broad applications such as energy storage, independent power supply, grid stabilization, and a stabilization use of renewable energy. This standard is applicable to all flow battery systems.

This regulation will define terms applicable to the electrical energy storage systems

The scope of this NWIP is to prepare normative documents on safety dealing with: 1) main risks related to couples of use cases and associated technologies; 2) technical contents and results to be included in the safety report and auditing framework; 3) list of main features to be validated by testing; 4) scale at which the storage system must be tested; and 5) recommendations to prevent or mitigate accidental effect.

NFPA 791 covers recommended procedures for evaluating unlabeled electrical equipment for compliance with nationally recognized standards. Criteria provide guidance to third-party field evaluation bodies (FEBs) on how to perform evaluations of unlabeled electrical equipment in a consistent and reliable manner, thus assisting regulating authorities who make product and related installation approval decisions and facilitating acceptance of the results. Specific areas covered include pre-site preparation, construction inspection, electrical testing, and reporting, and documentation.