C-Tick 2002: The Australian EMC Regulations Simplified

Chris Zombolas

Updated EMC regulations in Australia and New Zealand provide greater flexibility for manufacturers.

Illustration by TAISHA PAYTON

In 2000, the Australian Communications Authority (ACA) convened an electromagnetic compatibility (EMC) review committee to discuss areas of deficiency identified during ACA's course of management as well as from industry submissions. Fifteen recommendations were considered, and the legal instrument was changed in late 2001 to accommodate the most important proposals. The most significant change was the adoption of the list of International Special Committee on Radio Interference (CISPR), European Committee for Electrotechnical Standardization (CENELEC), and International Electrotechnical Commission (IEC) standards as mandatory ACA standards. This change better identifies the applicable mandatory standard for virtually any electrical product on the market.

The new regulations also harmonized the Australian and New Zealand EMC requirements under the Trans-Tasman Mutual Recognition Arrangement (TTMRA). The aim of aligning compliance procedures was to remove barriers to trade between the two nations and effectively lessen costs by providing a mutually accepted and recognized route to product compliance.

After much consultation between ACA and the Radio Spectrum Management Group (RSM) of the New Zealand Ministry of Economic Development (NZMED), the Trans-Tasman EMC Compliance scheme was introduced. At this stage, the harmonized TTMRA scheme regulates only the EMC aspects of product compliance.

The C-Tick mark is valid for both countries and may be applied by either a New Zealand supplier or an Australian supplier. A parallel declaration of conformity (DoC) notification scheme is still available for New Zealand suppliers who do not wish to use the C-Tick mark. ACA and RSM plan to extend the scope of the TTMRA to include telecommunications and radiocommunications compliance. This article provides an overview of the new requirements, their enforcement, and penalties for noncompliance.

Evolution of the Australian EMC Compliance Scheme

In 1997, ACA introduced the EMC Compliance scheme, which was designed to limit the amount of electromagnetic interference to Australia's radiocommunications and radio-frequency (RF) spectrum. The scheme outlined compliance with technical limits for emissions from all electrical and electronic products marketed in Australia under the Radiocommunications Act of 1992.

ACA modified the scheme in 1998 in a bid to clarify its scope and application. The compliance scheme was based on a system of self-declaration, with the responsibility for compliance resting solely on the supplier.

Although the scheme was standards based, it was evident after implementation that the scope was not adequately defined for many products, and some loopholes became apparent.

In January 1999, the regulations were rewritten so that the scheme became totally standards based. If a product fell under the scope of one of the ACA mandatory EMC standards (and was not specifically excluded) then compliance with all the provisions of the C-Tick regulations was mandatory. The major problem faced by industry and suppliers was in determining the appropriate standard to apply. This standards-based approach eliminated many ambiguities, removed most loopholes, and clarified the scope of the regulations. However, vagaries in the scopes of some CISPR standards made it difficult for suppliers to decide which standard applied to their product.

The primary responsibility for enforcement of the EMC regulations now rests with ACA and RSM through the list of standards made under their respective legislative instruments. The EMC regulations apply to suppliers of a wide range of electrical and electronic products offered for sale in Australia and New Zealand. A supplier is defined as:

Standards

Under the TTMRA-harmonized EMC compliance scheme, all electrical and electronic products seeking approval for the Australian or New Zealand markets must comply with the applicable, mandated EMC emission standards, unless specifically excluded. All products must also comply with the electrical safety requirements of appropriate regulatory bodies. Mandatory immunity requirements are not covered within the scope of the existing scheme. Manufacturers are encouraged to consider immunity issues when designing products. (Immunity requirements are mandatory under other regulatory regimes such as the Therapeutic Goods Administration, Civil Aviation Safety Authority, and Defense).

ACA and RSM have mandated the following EMC aspects of the standards: EMC phenomena of emitted disturbances only associated with conducted (continuous and intermittent) RF disturbance or radiated RF disturbance, and test procedures and requirements associated with these EMC
phenomena. The standards are listed in Table I.

The regulations apply to all products that fall under the scope of one of the mandatory standards and operate from the domestic residential mains supply or from battery or similar supply. This modification brings previously exempt three-phase equipment into the scope of the regulations, but it exempts equipment that operates from a high-voltage supply.

Transitional Arrangements

The transitional arrangements for amendments or implementation of the standards are two years for IEC, CISPR, and AS/NZS standards at the time of publication. For EN standards, the transitional period is as published in the Official Journal of the European Communities. The transitional arrangement is the time period in which ACA and RSM recognize conformity to either the earlier or later version of the same standard for products supplied to the market. Upon expiry of the transitional period, ACA and RSM will recognize only the later version of a standard for compliance purposes with the EMC scheme.

EMC Compliance Arrangements

To comply with the EMC regulatory arrangements, Australian and New Zealand suppliers must satisfy four basic requirements:

Once these basic requirements have been satisfied, a product can be offered for sale without the involvement of ACA or RSM.

Compliance Levels

The EMC scheme defines three levels of compliance as well as requirements based on the risk of interference that may be expected from a product. Each compliance level has a series of requirements that are applicable for Australian and New Zealand suppliers.

Compliance Level 1. Level 1 covers products whose emissions are considered to have a low impact (minimal risk of interference) on devices using the RF spectrum. Level 1 products include products such as manually operated switches or simple relays, brushless squirrel-cage induction motors, and resistive elements.

Compliance Level 2. Level 2 covers products whose interfering emissions would have some impact on devices using the RF spectrum. Examples of these devices include the following:

Suppliers in Australia and New Zealand must ensure that products falling within this compliance level meet the appropriate EMC standard. For level 2, they must hold a compliance folder containing a product description, completed DoC, and an adequate EMC test report or technical construction file (TCF) that demonstrates compliance with the limit defined in the applicable EMC standard. Testing must be performed using the procedures specified by the standard. This change appears to disallow the use of precompliance test equipment and procedures.

Compliance Level 3. Level 3 covers products whose interfering emissions have the highest risk of serious impact on devices using the RF spectrum. Level 3 applies to devices that belong to the industrial, scientific, and medical (ISM) group 2 (CISPR 11) and telecommunications terminal equipment under information technology (CISPR 22). After November 2003, telecom equipment will be classified as compliance level 2.

Suppliers in Australia and New Zealand must ensure that products falling within this compliance level meet the appropriate EMC standard. For level 3 products, suppliers must hold a compliance folder containing a product description, completed DoC, and an accredited test report or TCF. The test report must be issued by a laboratory that is accredited by National Association of Testing Authorities (NATA), or a NATA MRA partner accreditation body. The laboratory's scope of accreditation must include all of the relevant clauses of the applicable version of AS/NZS 3548/CISPR 22/EN 55022 or AS/NZS 2064/CISPR 11/EN 55011.

The Declaration of Conformity

The DoC is a statement signed by the supplier certifying that the product has been tested and found to comply with any required standards. The supplier establishes the compliance folder after viewing evidence of compliance (i.e., one or more test reports outlining compliance margins). Although suppliers are not required to submit the product or proof of compliance to the regulatory bodies at this stage, they must retain a compliance folder containing the DoC and all required compliance records.

Required compliance records include test reports indicating compliance margins, a description of the product and all documentation that clearly identifies it (e.g., photographs, block diagrams, drawings, and circuit diagrams), and paperwork showing the product's brand name, model number, etc.

Compliance records, which must be in English, can be kept electronically. Records must be kept for five years after the product ceases to be supplied in Australia or New Zealand. Hard copies of compliance documentation must be made available to ACA or RSM for audit or investigation within 10 business days of a written request from the regulatory body.

A supplier must complete and retain a DoC every time a new product or model of a product is to be marketed. If a product has had changes that are either cosmetic or that do not alter its RF emission characteristics, then compliance is presumed under the DoC maintained for the earlier model. In situations where variants exist, the supplier must add a signed statement to the original compliance records outlining the changes made and the reasons for using a single DoC for marketing.

Exemptions

Although the EMC schemes in Australia and New Zealand have been harmonized, the categories for exemption are slightly different in each country.

Australia. Equipment that falls within the scope of other regulatory bodies is exempt from the EMC regulations in Australia. The Civil Aviation Safety Authority, for example, approves equipment related to avionics and ground facilities. Equipment used for military purposes is approved by the Department of Defence, and the Department of Transport and Regional Services regulates design safety codes for road-registrable vehicles. All devices that fall within the jurisdiction of the Therapeutic Goods Act are assessed by the Therapeutic Goods Administration. All devices used solely for law enforcement by the following agencies are exempt from the EMC regulations:

Radiocommunications products are intentional radiators and, as such, are generally excluded from the EMC regulations. These products are covered by a different set of standards and compliance arrangements administered by ACA. It should be noted that carrier telecommunications equipment has been removed from the list of exempted devices and must now be C-Ticked.

New Zealand. In New Zealand, the administrative components of the EMC regulations do not apply in the following circumstances:

Labeling

The labeling of compliance level 1 products is voluntary (but compliance is still mandatory). All level 2 and level 3 products must be labeled appropriately before they can be marketed. The required label consists of either the C-Tick mark or its alternative, the regulatory compliance mark (RCM), or the A-Tick mark for telecommunications devices. In New Zealand, the A-Tick mark does not signify compliance with telecom standards as it does in Australia.

In addition to the relevant, applicable compliance mark, each label must also contain acceptable supplier identification. If it is not practical to attach a label to the exterior of a device, the label can be attached in the following order:

These options can only be used with the written permission of ACA or RSM. A valid reason must be given to explain why it is not practical to label the product itself.

C-Tick. The C-Tick is a certification trademark registered to ACA under the Trade Marks Act of 1995 and to RSM in New Zealand under Section 47 of the NZ Trade Marks Act (see Figure 1). The mark must be used in accordance with its governing regulations and is therefore only issued to an Australian or New Zealand-based supplier. The label is expected to be durable and limited in its size, scale, and color according to the regulations.

Figure 1. C-Tick certification mark.

A-Tick (Telecommunications Standards). All products subject to the Australian Telecommunications Labelling Notice must also meet the requirements of an EMC standard such as AS/NZS 3548 or AS/NZS CISPR 22. The A-Tick mark illustrates compliance with both the EMC and telecommunications requirements in Australia, but only with EMC requirements in New Zealand (see Figure 2). AS/NZS 3548 has been replaced with AS/NZS CISPR 22:2002. This standard incorporates CISPR 22:1997 and Amendment 1:2000. The requirements for conducted emissions on telecom ports have been deferred by the revised EMC regulations until November 2003.

Figure 2. A-Tick mark for telecommunications products.

RCM. The regulatory compliance mark (RCM) is a trademark owned by Australian and New Zealand regulators and alternatively signifies EMC compliance. Suppliers intending to use the RCM mark should register with Standards Australia (in accordance with AS/NZS 4417.1) and complete the application form in AS/NZS 4417.3. The RCM is not an alternative mark to the A-Tick telecommunications compliance mark.

Supplier Identification. In addition to one of the marks, product labels must also include the identification of the manufacturer, importer, or agent. In Australia, one of the following must be on the label: