Vaisala WSP152 Surge Protector with Connectors for 220782 and 215952

Especially designed to protect the USB connection of a PC connected to the Vaisala Weather Transmitter WXT520 or the Vaisala WINDCAP® Ultrasonic Wind Sensor WMT52. Excellent three-stage, transient surge protection. Tolerates up to 10 kA surge currents.

Features:

• Excellent three-stage, transient surge protection
• Tolerates up to 10 kA surge currrents
• Provides additional filtering for blocking the HF-conducted interference
• Both differential and common mode protection on each channel
• 2 power and 2 data channels
• Protects the USB connection of a PC connected to Vaisala Weather Transmitter WXT530 Series

Excellent Protection

WSP152 is designed to protect the host PC against surges entering through the USB port. For example, a nearby lightning strike may induce a highvoltage surge, which is not tolerated by the protection of the USB cable or the port itself. Therefore, additional protection is needed, especially where frequent and severe thunderstorms are common and where cables longer than 30 m (98 ft 5 in) are used. Note that the USB connection of a PC is for indoor use only. WSP152 offers three-stage protection against surge currents of up to 10 kA that may enter through the USB cable or the port.

How Does WSP152 Work?

WSP152 has 4 channels, 2 dedicated to power lines and 2 for data lines. Each channel uses a three-stage protection scheme: first there are discharge tubes, then voltage dependent resistors (VDR), and finally transient zener diodes. Between each stage, there are either series inductors or resistors. Both differential and common mode protection is provided for each channel: across the wire pairs, against the operating voltage ground, and against earth. WSP152 also includes noise filtering against HF and RF interference.

Applications

Vaisala recommends using WSP152 when USB cables are used for permanent connections. The surge protector is always recommended when there is an elevated risk of a lightning strike.

For more information, please see Data Sheet