Do I need Type 1 or Type 2 SPD?

The Type 1 SPD is recommended in the specific case of service-sector and industrial buildings, protected by a lightning protection system or a meshed cage. Type 1 SPD is characterized by a 10/350 µs current wave. Type 2 SPD. The Type 2 SPD is the main protection system for all low voltage electrical installations.

How do I know what surge protector I need?

Choose a surge protector with a joule rating at the very least in the 200 to 400 range. Sensitive or costly equipment, such as computers, displays and audio/video equipment, warrants a joule rating of at least 1000. A joule rating over 2000 indicates maximum protection.

How do I choose SPD rating?

The peak surge current ratings of SPD are generally based on the sum of Line-neutral and Line-ground current.

1. The peak surge current ratings of SPD are generally based on the sum of Line-neutral and Line-ground current.
2. A peak ampere rating per phase.

Where do I put SPD devices?

In an electrical systems, surge protection devices (SPDs) are usually installed in tap-off configuration (in parallel) between the live conductors and the earth. The operating principle of SPD can be similar to that of a circuit breaker.

What is Class 3 surge protection?

SPD Class III. OVR type 3 surge protective devices shall be installed as close as possible from the sensitive equipment to protect. Tested with a 1,2/50 – 8/20 current combination wave generator, they ensure a very low protection level voltage value.

How many joules do I need to protect my TV?

Recommendations. Electronic accessories manufacturer Belkin recommends its 1,411 joule model for most TV sets, or its 2,444 joule unit for projection televisions. ReviewSurgeProtector.com similarly advocates a minimum level of 1,500 joules for TVs.

How do you know if a surge protector is good?

To determine if the internal surge protection components are working normally, look at the “Protection Present” or “Protected” LED on the front of the surge protector’s casing. If it is illuminated green, your surge protector is ready to go and prepared to protect you when the next power surge occurs.

How surge protectors are rated?

A surge protector joule rating indicates how much energy it can absorb before it fails. The higher the number of joules, the greater the surge protection provided. Keys to determining the amount of protection needed include the type and value of the equipment to be protected.

Where do you install Type 2 surge protection?

Type 2 surge protective device will be installed in the electrical installation’s incoming-end switchboard. If the distance between that surge protective device and the protected equipment exceeds 30 metres, an additional surge protective device (Type 2 or Type 3) should be installed near the equipment.

What is Type 3 surge protector device (SPD)?

Type 3 Surge protector device (SPD) • Type-3 SPD is characterized by a combination of voltage waves (1.2/50 µs) and current waves (8/20 µs). • Its main function is to limit low level surges which can damage sensitive electronic circuits in TVs, PCs and electric appliances. • It is considered to be last line defense in surge protective network.

How to choose the right surge protection system for your building?

When the building is protected by a lightning protection system, a Type 1 surge protective device must be installed at the incoming end of the installation. Also, you can choose a Type 1+2 SPD or Type 1+2+3 SPD as they can further lower the overvoltage and save some cost in some cases.

What is the IEC 61643 standard for surge protection?

The IEC 61643 standard defines 3 types of surge protective devices for low voltage electrical system. Type 1 or Class I: Type 1 SPD can discharge strong lightning current and are installed in the main electrical switchboard when the building is protected with lightning protection system (lightning rod, down conductor and grounding).