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Vaisala WSP150 Surge Protector

Vaisala WSP150 Surge Protector is a compact, transient overvoltage suppressor for outdoor use.  It can be used with Vaisala weather instrumentation, notably the Vaisala WXT530 Multi-Variable Weather Transmitter.  It can provide overvoltage protection for 2 power supply lines and RS-422, RS-485, RS-232 serial communication, or 2 mA loop lines.  In weather instrumentation, which is commonly installed outdoors, high up, issues can be found via lightning strikes.  A lightning strike nearby may induce a high voltage surge, which the integral transient suppressor of the instrument may not tolerate. Additional protection is needed, especially where frequent and severe thunderstorms are common and where cables longer than 30 m are used.

Also consider Vaisala WSP150 where you have unshielded, open-wire lines.  Vaisala WSP150 offers 3-stage protection against surge currents up to 10 kA entering through the power and signal cables.


Vaisala WSP150 Surge Protector Features:

  • Superior, three-stage transient surge protection
  • Tolerates up to 10 kA surge currents
  • Noise filtering against HF and RF interference
  • Robust structure
  • IP66 housing
  • Both differential and common mode protection on each channel
  • 2 power and 2 data channels
  • Can be used with all Vaisala wind and weather instruments


Vaisala WSP150 Surge Protector Specifications:

  • Operating temperature -52 … +70 °C
  • Input voltage: Power channels: max. ±43 V, Data channels: max. ±13 V
  • Input Common mode Voltage: Any line to earth: max. ±72 V
  • Throughput current: Power lines: max. 1.5 A, Data lines: max. 0.16 A
  • Throughput resistance (per line): Power lines: max. 0.3 Ω, Data lines: max. 15 Ω
  • Turn on voltage: Power channels: max. ±60 V, Data channels: max. ±16 V
  • Surge current: To earth: max. 10 kA, Differential: max. 5 kA
  • Dimensions (ex glands etc): 94 × 130 × 58 mm, approx 650g
  • Polycarbonate and stainless steel housing materials, IP66


Fluidic are a recognised partner of Vaisala CEN (Industrial division) for Scotland and the North of England.  Our instrumentation engineers are product trained and able to help with instrument selection within the full range of Vaisala Relative Humidity, Temperature and barometric pressure products.  Please call either office for more information (Glasgow 0141 641 5920,  Warrington 01925 572401).


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