RCD TESTING & INSTALLATION

Importance of RCD Protection

Residual Current Devices
Importance of RCD Protection

With over 2 decades of experience and offering absolute customer service, Micron Group offer premium RCD testing and Installation services. Our electricians use calibrated RCD testers to install, test and commission Residual Current Devices or RCDs to businesses across Australia.

Protecting people and property from electrical hazards is a top priority for any responsible manager or business owner alike. In both homes and workplaces across the country residual current devices (or RCDs) play a key role in ensuring faulty equipment and cabling is safely and quickly de-energised before fire breaks out or worse, someone suffers a life-threatening electric shock. A 30mA-rated RCD is calibrated to trip before fibrillation of the heart takes place and a 10mA-rated RCD before muscular contraction.

RCD Testing and Installation

  • CATEGORY:

    Residual Current Devices

  • TYPE:

    RCD Protection

  • CASE STUDY:

    RCD

RCD Testing

RCD Testing

Micron Group use specialized RCD test equipment to test and certify your RCDs to the highest standard. Like anything, RCDs can degrade and become faulty over time. It is therefore critical that regular testing by a licenced electrician with calibrated specialist equipment be conducted and any faulty units replaced as a priority.

“AS/NZS 3760 states RCDs Must Be Injection Tested Every 12 Months”

Australian Standards mandates injection testing be conducted annually and recommend “push button” testing in between times. Push Button Testing helps eliminate the ‘gluing effect’ or ‘mechanical sticking’ prone to RCDs. Review the NSW RCD testing requirements here Safework RCD Testing Requirements

RCD Injection Testing

Injection testing of RCDS is mandatory and conducted by injecting milliamp currents by use of a specialized tester into the RCD to cause the RCD to trip. Micron Group Test and Record parameters such as date, switchboard location, trip time, injected current and issue our customers a full report to ensure compliance with AS/NZ3760.

Micron electricians conduct a Push Button Test to determine the overall mechanical operation of the RCD at intervals applicable to the environment (to avoid gluing). On an annual basis Micron conduct an RCD Injection Test, a more detailed test that involves an electrical connection between the RCD’s Active and Neutral conductor to the test equipment in accordance and compliance with AS/NZ3760. Both tests will interrupt power.

Rapid Test Automated RCD Injection Testing

Micron electricians supply and install Rapid Test automated commissioning modules to all types of switchboards. The Rapid Test System ‘RTS’ is a Wi-Fi based system which allows RCD testing to be performed quickly and safely. After installation RCDs are tested either directly at the RCD or at power outlets located throughout the building which may be time consuming. Rapid Test allows for a fast automated test to be completed by a specialized Wi-Fi monitored system installed within the switchboard.

RCD Injection Testing Requirements

RCD’s Must NOT trip at the half rated trip current
RCD’s Must trip within 300ms of RCD rated current 30mA and 100mA
RCD’s Must trip within 40ms of the RCD rated current 10mA RCDs
RCD’s Must trip within 40ms at five times its rated trip current

RCD Testing

  • CATEGORY:

    Residual Current Devices

  • TYPE:

    RCD Protection

  • CASE STUDY:

    RCD

RCD Installation

RCD Installation

Micron Group will assist you in advising where RCDs should be installed in your premises, what type of RCD’s should be installed, and what circuits need to be protected. We supply and install single and three phase RCDs to commercial and industrial switchboards to help ensure the safety of your staff and visitors. Our licenced electricians will test and certify all RCD installations using calibrated RCD testing equipment ensuring your RCDs operate correctly.

Installation of 30ma RCDs

RCDs with a minimum residual current of 30 mA are the most common type of RCD, and as per ASNZ 3000 RCDs it is now a requirement to install RCDs to all final subcircuits rated 32 A or less, for all socket-outlets, lighting, direct connected handheld equipment, and direct connected equipment that presents an increased risk of electric shock. Our expert electricians can advise on your situation.

Installation of 10ma RCDs

10mA RCDs have an increased response rate and recommended for installation in high-risk areas such as childcare centres, hospitals, aged care facilities, and medical precincts providing additional protection to human life.
In cases where an RCD is nuisance tripping, our electricians will analyse the load to calculate the total leakage of all connected equipment to ensure it is under the 15mA limit. Using specialised metering equipment Micron Group conduct earth loop impedance testing and earth leakage current testing to determine if the individual circuit or devices have any leakage to earth.

RCD Regulations Regarding Upgrade of Circuits and New Installations

New builds, including fitouts are required to have RCD protection installed on all final subcircuits including lighting circuits (AS/NZS 3000: clause 2.6.3.2). Additionally, any modification to existing circuits (such as relocating or adding a power point or light) is considered ‘new’ and must therefore ensure RCD protection is in place (AS/NZS 3000: Clause 2.6.3.4). Review the Safework NSW managing electrical risk requirements here Safework Managing Electrical Risks Requirements

RCD Installation

  • CATEGORY:

    RCDs

  • TYPE:

    RCD Requirements

  • CASE STUDY:

    RCD Requirements

RCDs and Circuit Breakers

Differences BetweenCircuit Breakers, RCDs & RCBOs

A standard circuit breaker is engineered to trip due to overload (where too many items are connected to a circuit) or the sudden fault current caused by a short circuit, but while circuit breakers and fuses generally do a great job protecting your electrical infrastructure, they are not sensitive enough to protect people who may encounter live wires or equipment. RCDs allow for next level protection.

Connected before your circuit breaker or integrated into the circuit breaker itself (a RCBO), a Residual Current Device is designed to detect current leakages as low as 10mA, (ten one thousands of an amp) up to a maximum of 30mA, and trip in under 300ms when an earth leakage fault is detected. When Micron Group are testing and installing RCDs the following requirements must be considered.

RCD Circuit limitations and Australian Standards

To stay under the 15mA level above which RCDs may trip, the following limits apply:
• Maximum of three circuits protected by any single RCD (AS/NZS 3000:2007 Clause 2.6.2.4)
• Maximum of 10 computers per office circuit. Each PC can have up to 1.5mA of earth leakage current due to the noise filter on the power supply.
• Maximum of 30 light points with electronic ballasts. An electronic ballast typically adds 0.3-0.5 mA of leakage.

residual current devices (RCD)

  • CATEGORY:

    RCDs

  • TYPE:

    RCD vs Circuit Breaker

  • CASE STUDY:

    RCD

RCDs Testing Services

Micron Group RCD Testing Services

When you engage Micron Group to perform RCD testing or RCD installation, you will be engaging Micron’s licenced and qualified electricians with over 2 decades of experience to work on your infrastructure. You can rest assured we use the latest calibrated equipment to exhaustively test and evaluate each RCD.

After our RCD test procedure, you will also receive a detailed certified report capturing all RCD statistics including the trip time, trip current in milliamps, and switchboard location of each RCD and a proposal for rectifying any faults found.

From a small office to an entire precinct or university campus our licensed electricians can assist with any RCD testing and installation requirement. Contact the team today to book your next RCD test and safeguard your business. Get in Touch Today 02 9221 6155

testing residual current devices (RCD) to Australian Standards

  • CATEGORY:

    RCDs

  • TYPE:

    RCD Testing & Installation

  • CASE STUDY:

    Statuatory Testing

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