Type 2 SPD: Safeguard Your Sensitive Devices

What is Type 2 surge protection?

A Type 2 SPDprotects electrical installations and devices connected to them from transient overvoltage. A transient overvoltage occurs when there is a sudden increase in electrical voltage, typically caused by an external force (like a lightning strike or surge) or an internal factor (such as switching). Unlike a Type 1 SPD, which is installed at the main distribution board to protect against direct lightning strikes, a Type 2 SPD will be installed downstream to protect sensitive equipment from indirect surges and residual energy. Type 2 SPDs are used in residential, commercial, and industrial applications.

The IEC/EN 61643 Classification system uses the term Type 2 SPD to describe a protective component using applicable international standards. The classification system was developed to help users identify SPDs based on their intended use. The Type 2 SPD is designed to protect against overvoltage to secondary installations and, therefore, will limit surges to the amount of overvoltage permitted by the electrical equipment to which it is connected. A Type 2 surge protection device (SPD) mitigates the hazards associated with sensitive electronic equipment and increases the dependable operation of electrical systems. This reassurance provides consumers with confidence in the reliability of their electrical systems.

Reasons to Install Type 2 Surge Protection Devices

The following are a few critical advantages you should consider when deciding to install a Type 2 surge protection device:

• Improved Protection for Equipment: Sensitive electronic devices like computers, medical devices, and factory equipment are extremely susceptible to surges due to unexpected voltage spikes.
• Adherence to Electrical Codes: The vast majority of all current electrical code specifications recommend or require some form of surge protection for all electrical installations to promote the safety and reliability of their systems.
• Cost Saving: Preemptively addressing potential damage from power surges can save you money in terms of repairing/replacing damaged equipment.
• Peace of Mind: Knowing a Type 2 surge protection device has been installed gives you peace of mind when it comes to protecting your electronics from unexpected electrical anomalies.

Type 2 Surge Protection Device Wiring Diagram

Knowing how to read Type 2 SPD wiring diagrams is necessary to properly maintain and install them. A Type 2 SPD is connected to the mains and is installed in parallel with a circuit. The purpose of this device is to protect devices connected to an electrical system from excess voltage by diverting it away from the device. The SPD does this without interrupting the normal electrical supply to the device.

This setup, shown in the following diagrams, consists of:

• Line and Neutral Connections (L-N): SPD connection to both the line (live) wire and the neutral (ground) wire allows it to effectively handle voltage surges.
• Earth Connection (PE): Grounding wire is required for safely connecting excess voltage from an SPD to Earth.

If you do not feel comfortable wiring an SPD, we recommend consulting a licensed electrician for proper installation and compliance with safety codes.

Type 2 Surge Protector Installation

The installation of a Type 2 SPD involves certain procedures to ensure the unit operates properly and meets regulations. Follow these installation steps:

Step 1 – Preparation:
Before you begin any electrical work, turn off the main power source to avoid risk of electrical shock. Acquire the tools and equipment necessary for performing the installation.

Step 2 – Mounting:
Generally, SPD units are mounted inside either an electrical distribution panel or a separate sub-panel. Refer to manufacturer instructions to locate the SPD in the proper place.

Step 3 – Connecting Wires:
Once mounted, connect wire leads from the SPD to each respective terminal (live, neutral, and earth) securely using the wiring diagrams supplied by the SPD manufacturer as reference.

Step 4 – Testing:
After the SPD is installed, apply electrical power and test its functionality with an electrical load. Check that it responds properly when simulating overvoltage scenarios.

Note: If you have any doubt about how to perform this procedure correctly, consult a qualified electrician.

FAQs About Type 2 SPDs

What is a Type 2 SPD surge protection device?
A Type 2 SPD is designed to protect electrical installations and sensitive equipment from indirect lightning strikes or switching operations that generate transient voltage surge events.

Can I install a Type 2 surge protection device?
Yes; however, it is recommended to have an electrician install your Type 2 SPD to ensure proper installation and compliance with current electrical codes.

How long do Type 2 SPDs last?
A Type 2 SPD’s lifespan will vary based on the manufacturer and the amount of surge activity that occurs in its location, as well as the conditions under which they were installed. Regularly inspect and maintain the SPD as part of your facility’s electrical infrastructure maintenance program.

Conclusion

In conclusion, a Type 2 surge protection device (SPD) is a valuable investment to preserve the reliability of your electrical systems and protect sensitive equipment. A Type 2 SPD provides reliable protection for voltage transients in homes, businesses, and industrial facilities and enables safe and uninterrupted operation of these types of systems. To achieve this reliability, it is critical that type 2 SPDs be installed according to the manufacturer’s specifications. Contact a qualified electrician to discuss your needs and to protect your electrical system today.