Surge Protector (SPD) Tests

Inspection of Type 1, Type 2 and Type 3 Surge Protection Devices According to IEC 61643 Standards

Even if lightning doesn't strike your roof, a lightning bolt hitting 3 km away can rebound through your power grid and burn out your factory PLC boards, server motherboards, and security cameras. Are the surge protector (SPD) cartridges in your panels really intact?

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Electronic Shield Against Invisible Strikes: SPD

Surge Protective Devices (SPDs) are critical components that protect sensitive electronic devices in your switchboards by capturing and grounding momentary voltage surges caused by lightning or power surges. The IEC 61643 series covers both manufacturing quality testing and periodic field condition verifications for these devices.

In many facilities, even though Type 1 or Type 2 SPDs are installed, the indicator window on the device has turned red and it has lost its protective function. In this case, your control panel becomes an easy target. AES Innovation measures and documents the true operational health of your SPDs with thermal camera and megger tests.

SPD Cartridge Health and Coordination Tests

Our Surge Arrester Inspection Protocol:

  • Cartridge Status Indicator Check:
    Each SPD module's mechanical or electronic status window is individually verified visually and with a device to be either green (healthy) or red (expired/burned out).
  • Varistor Leakage Current Measurement:
    Whether the aging-increasing leakage current in a metal oxide varistor (MOV) poses a thermal threat is monitored with a sensitive clamp meter.
  • Coordination (Type 1 + Type 2 + Type 3 Levels):
    The coordination distance and decoupling coil are calculated between Type 1 (lightning current) in the main panel, Type 2 (overvoltage) in the floor panels, and Type 3 (thin protection) in the appliance socket.
  • Ground Impedance Connection:
    To ensure the SPD can dissipate the captured impulse current to ground without resistance, it is examined whether the PE (protective conductor) connection is routed via the shortest and lowest impedance path.
WHY AES INNOVATION?

A lightning rod without a surge protector is incomplete protection.

While the lightning rod on your roof protects against external lightning strikes (physical damage), the surge protectors (SPDs) in your electrical panels protect the electronic components of your devices as internal lightning protection. The IEC 62305-4 standard already mandates coordinated operation of these two systems. AES Innovation harmonizes both layers of protection in a single report, providing your facility with complete armor protection.

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International Standards and Related Legislation

Controls are implemented in accordance with IEC 61643-11 (AC power circuits SPD), IEC 61643-21 (Telecommunications/data lines SPD) and IEC 61643-31 (PV systems SPD) sub-standards, in coordination with IEC 62305-4 (Building internal lightning protection).

Frequently Asked Questions

Frequently asked questions about SPD/Surge Arresters for facility electrical maintenance crews.

Even when providing protection, the SPD (Surge Protection Device) does not interrupt the flow of electricity. The red indicator means the device has experienced a surge and exhausted its protection capacity. It no longer protects you and must be replaced immediately.

If the cable between Type 1 (main panel) and Type 2 (floor panel) is shorter than 10 meters, the two SPDs can interfere with each other's operation without the addition of a decoupling coil (inductor). Testing this coordination is a critical point in the AES report.

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How can you contact us?

+90 850 532 71 89+90 312 806 45 71info@aesinn.comWhatsApp
+90 530 323 7068
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