Industry Compliance

See below for the codes of compliance that our vairous products align with. If you have any questions, please feel free to contact TCI’s expert tech support at any time to learn more about how our products align with these codes.

Key Changes and Differences Between the New IEEE 519-2014 Standard and IEEE 519-1992

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IEEE Std 519-2014 is a newly published revision to the IEEE Recommended Practice and Requirements for Harmonic Control in Electric Power Systems. It supersedes the IEEE Std 519-1992 revision.

The overarching goal of the 2014 revision is the same as the 1992 version; to define the specific and separate responsibilities for each participant – utilities and users – to maintain the voltage THD within acceptable limits at the Point of Common Coupling (PCC) between the utility and the user, and protect the user and utility equipment from the negative impact of harmonics. The separate individual responsibilities are:
  • User – limit harmonic currents at the PCC to prescribed levels
  • Utility – limit voltage distortion at the PCC to prescribed levels by maintaining system impedance as necessary
To determine if your systems are compliant with IEEE 519-2014, use the HarmonicGuard® Solution Center.

Main Updates and Changes That May Affect You

Applying Harmonic Limits at the PCC Between Utility and User

The 2014 version re-emphasizes and clarifies IEEE Std 519, as written, is to be applied at the PCC – the point of common coupling between the utility and the user. The size reduction of the document and the removal of conflicting material aids tremendously in clarifying:
  • The standard is designed to be applied at the PCC
  • The PCC is the point of common coupling between the utility and user

Current distortion limits for systems rated 120 V through 69 kV

a Even harmonics are limited to 25% of the odd harmonic limits above. b Current distortions that result in a dc offset, e.g., half-wave converters, are not allowed. c All power generation eqipment is limited to these values of current distortion, regarless of actual ISC/IL. where ISC = maximum short-circuit current at PCC IL = maximum demand load current (fundamental frequency component) at the PCC under normal load operating conditions.

Current THD Limits at the PCC

A change was made to the Current Distortion Limits table to document what has been practiced in the field for many years – limiting the assessment of harmonic currents up to a maximum of the 50th harmonic. This is accomplished by clearly stating in Table 2 of IEEE Std 519-2014; the maximum individual harmonic range is 35th≤h≤50th.

Voltage THD Limits at the PCC

Table 11-1 Voltage Distortion Limits in the 1992 version was updated (Table 1 in the 2014 version) with the addition of a new voltage range and limits. A new lower PCC voltage range of V≤1.0kV was defined with higher allowable harmonic voltage limits: Individual Harmonic at 5% and Total Harmonic Distortion at 8%. These limits are higher than the next highest voltage range 1.0kV<V≤69kV.

High Frequency Current Allowance in Low Current Distortion Systems

IEEE 519-2014 provides for an allowance of higher high-order harmonic current limits at a PCC that has low lower-order harmonics. The allowance is applied to Table 2, Current Distortion Limits, if a prescribed minimum performance level is met. For example, if a power system with Isc/IL< 20 has 5th and 7th harmonic currents at <1% then all other harmonic limits in Table 2 may be exceeded up to a factor of 1.4 and still be in compliance.


The IEEE Std 519-2014 version more clearly defines the statistical measurement levels for determining compliance. The new measurement methods will be especially useful for power systems with large amounts of cyclical loads or a power system with varying loads and distortion levels. As described in more detail in the standard, the three statically based limit bands are:
  1. Daily 99th percentile harmonic currents should be less than 2 times the Current Distortion limits in Table 2
  2. Weekly 99th percentile harmonic currents should be less than 1.5 times the Current Distortion limits in Table 2
  3. Weekly 95th percentile harmonic currents should be less than 1.0 times the Current Distortion limits in Table 2

Format Changes

The 2014 revision is a vastly simplified document compared to the 1992 version. A significant amount of educational material on generation and measurement of harmonics was either deleted or moved from the main body of the document into the appendices. For example, some of the sections that were removed include:
  • Section 4 – Harmonic Generation: typical converters that produced harmonics
  • Section 5 – System Response Characteristics: details on power system resonance and interaction with converters and power factor correction capacitors
  • Section 6 – Effects of Harmonics including impacts on transformers, capacitors and meters
  • Section 7 – Reactive Power Compensation and Harmonic Control: Typical passive filter circuits
  • Sections 8 & 9 – Mathematic techniques to address THD calculations and measurements
Sections or information from the 1992 version that were moved to the 2014 version’s appendices and simplified are:
  • Interharmonics and flicker
  • Telephone Influence Factor (TIF)
  • Notch depth for limits SCR rectifiers
Additional key sections from the 1992 version that have been consolidated and made more concise:
  • Section 9 – Measurements of harmonics
  • Section 10 – Harmonic voltage current limits
  • Section 11 – Addressing harmonic voltage limits
Interested parties may refer back to the 1992 version for educational details when needed.

IEEE Societies

The IEEE Std 519-1992 was a product of and collaboration between two IEEE Societies:
  • Transmission and Distribution Committee of the IEEE Power and Engineering Society
  • Static Power Converter Committee of the IEEE Industry Applications Society
The IEEE Std 519-2014 document is a product of one IEEE Society, The Transmission and Distribution Committee of the IEEE Power and Energy Society.


IEEE Std 519-2014 is a newly published revision to the IEEE Recommended Practice and Requirements for Harmonic Control in Electric Power Systems. It supersedes the revision IEEE Std 519-1992. This document summarizes key changes and updates made in this latest version. Your system’s compliance with IEEE 519-2014 can be determined with the HarmonicGuard® Solution Center.


[1] “IEEE Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems”, IEEE Std. 519-1992. [2] “IEEE Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems”, IEEE Std. 519-2014.

Since 2003, when the European Union’s Restriction of Hazardous Substances (RoHS) legislation originally entered force, it sought to restrict the use of certain hazardous substances in the production of a wide range of Electrical and Electronic Equipment (EEE) placed on the European Union marketplace.  The aim is to protect human health and the environment during the production, use, and recycling and disposal of EEE.  Since the original RoHS, more restricted substances have been added, now a total of 10 substances with corresponding limits listed in the table below:

(% w/w)
Lead (Pb)0.1%
Cadmium (Cd)0.01%
Mercury (Hg)0.1%
Hexavalent Chromium (Cr +6)0.1%
Polybrominated biphenyl (PBB)0.1%
Polybrominated diphenyl ether (PBDE)0.1%
Bis (2-ethylhexyl) phthalate (BEHP)0.1%
Butyl Benzyl Phthalate (BBP)0.1%
Dibutyl Phthalate (DBP)0.1%
Diisobutyl Phthalate (DIBP)0.1%

For more information, see the RoHS Directive WebpageRoHS is periodically reviewed, including public and industry commenting, for its effectiveness with the current restricted substances and for the inclusion of other substances for restriction in the future.

“Publicado en abril de 2016, el código de la red está destinado a explicar y determinar los requisitos que los participantes del mercado y las partes interesadas deben seguir, como se define por el papel de CRE para garantizar la fiabilidad en la reforma energética.” Asociación Nacional de Comisionados Reguladores de Servicios Públicos (NARUC)    Los requisitos técnicos del Código de red entró en vigor el 8 de abril el año 2019.

Con respecto a los nuevos requisitos del código de red para centros de carga en términos de factor de potencia (mínimo 95% para 95% de las veces) y la distorsión armónica, TCI tiene un valioso portafolio de soluciones que incluyen:

  • Filtros armónicos activos,
  • Filtros armónicos pasivo para su aplicación en las unidades,
  • Los bancos de condensadores sin sintonizar
  • reactores

La corrección de los armónicos y el factor de potencia lo más cerca posible a las cargas que generan este problema es nuestro enfoque. A nivel industrial, las cargas armónicas más comunes son las unidades o variadores de velocidad. Tenemos los filtros HGP cuya función es mitigar la distorsión armónica directamente en las unidades.

In 2006, the European Union established Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH), with “Regulation (EC) No 1907/2006 of the European Parliament and of the Council of 18 December 2006”.  The goal of this regulation is to establish requirements of products which are placed into the EU marketplace either by European manufacturers or importers, which will help protect human health and the environment.  These requirements create transparency and open exchange of information about products between each Member State, governing agencies, companies, and the European Parliament.


  • Requires companies operating in the EU or importers into the EU to register their product with the European Chemicals Agency (ECHA) and any substances present in their products


  • ECHA and Member States evaluate incoming relevant registration dossiers to
    • Assess whether the testing performed by registrants is of high enough quality
    • Ensure compliance of registrant’s products with the REACH regulation
    • Determining if the products contain substances that are a risk to human health and the environment


  • If a substance has been identified as a risk to human health and the environment, it is placed on The Candidate List, which lists Substances of Very High Concern (SVHCs) to human health and the environment. The SVHC, if in an amount of greater than 0.1% w/w, are required to be communicated to downstream users as being present in an article.  Some substances that are on the Candidate List may be added to the Authorization List, as decided by the ECHA.  The Authorization lists consists of substances which require prior authorization for their use in products before allowed to be placed on the EU marketplace.  Some substances of high priority, including substances which are very Persistent, Bioaccumulative (vPvB) or highly utilized in the market, will be reviewed first as eligible for addition to the Authorization list.

Restriction of Chemicals

  • Some substances can be deemed by the ECHA and the Member States to be restricted from any use in the marketplace, if they are found to be of extreme hazard to human health and the environment in any capacity.

The placing of substances on the SVHC list, authorization, and restricted lists are conducted with input from industry, experts, and member states.  The socioeconomic impacts are also assessed to limit the negative impacts to individuals and businesses within the EU marketplace.

Latest SVHC List

Latest Authorization List

Latest Restricted List

As part of the Dodd-Frank Wall Street Reform and Consumer Protection Act, enacted in 2010, section 1502 sets out the requirement of publicly companies to disclose the smelters of certain minerals, Tungsten, Tin Tantalum, and Gold (3TGs) which may be contained in the raw materials of their products.  The aim of this requirement is to stop the purchase of the 3TGs from certain smelters in the Democratic Republic of Congo (DRC) which fund armed militias or commit human rights abuses on workers.  While only publicly traded companies are required to disclose their smelter supply chain information to the US Securities and Exchange Commission (SEC), other companies are highly encouraged to participate, which facilitates the reporting of previously mentioned publicly traded companies.

Click here for more information on the Conflict Minerals legislation.

To create a standard framework for reporting, tracking, and auditing smelters, the Responsible Minerals Initiative (RMI) created the Conflict Minerals Reporting Template (CMRT) and a database to track and provide information on the status of smelters which are active, under audit, inactive, or non-conformant.

Click here for more information on the RMI and for a blank CMRT.

This page is meant for informational purposes only, for information on each of the legislations, see the corresponding links.