Vaisala WSP150 Manuals

Overview Vaisala Surge Protector WSP150 is a compact transient overvoltage suppressor designed for outdoor use. It can provide overvoltage protection for 2 power supply lines and serial communication (RS-422, RS-485, RS-232) or for 2 mA loop lines. It can be used with: • WXT530 Series • WMT700 (non-heated) • WA15 Wind Set • WM30 Wind Set • DSC211 • DST111 Other instruments or serial communication lines can be protected if the current consumption is less than 1.5 A. A nearby lightning strike can induce a high-voltage surge not tolerable by the integral surge suppressors of the instrument. Additional protection is needed in regions with severe thunderstorms, especially when long line cables (> 30 m (98 ft 5 in)) are used. Vaisala recommends using a surge protector in installations on top of high buildings or masts and on open grounds, and in all sites with an elevated risk of a lightning strike. The surge protector provides additional filtering for blocking the HF-conducted interference induced into the cables in installations. The surge protector has 4 channels: 2 dedicated for power lines and 2 for data lines. Each channel uses a 3-stage protection scheme with gas discharge tubes, voltage-dependent resistors, and transient zener diodes. Both differential and common-mode protection is provided for each channel: across the wire pair, against the operating voltage ground, and against earth. M210809EN-D Quick Guide Vaisala Surge Protector WSP150 WSP150 PUBLISHED BY Vaisala Oyj Vanha Nurmijärventie 21 FI-01670 Vantaa, Finland © Vaisala 2019 All rights reserved. Any logos and/or product names are trademarks of Vaisala or its individual partners. Any reproduction, transfer, distribution or storage of information contained in this document is strictly prohibited. All specifications — technical included — are subject to change without notice.

For warranty information, visit our Internet pages at: QUICK REFERENCE GUIDE Vaisala Surge Protector WSP150 – Superior 3-stage surge protection tolerating 10 kA surge currents – Both differential and common mode protection on each channel – Filtering against HF and RF noise – Two power channels (±43 V, 1.5 A) and two data channels (±13 V, 0.16 A) – Can be used with all Vaisala wind and weather instruments – Adjustable mounting clamp provided for pole masts, Ø 30 mm … 102 mm – Two extra cable glands for cable branching and chaining DESCRIPTION Vaisala Surge Protector WSP150 is a compact-size transient overvoltage suppressor designed for outdoor use. It can be used with Vaisala wind and weather instruments for protection against surges entering through the line cables. For example, a nearby lightning strike may induce high-voltage surge not tolerable by the integral surge suppressors of the instrument. Additional protection is thus needed in regions with severe thunderstorms, especially when long line cables (> 30 m) are used. Vaisala recommends using the surge protector in installations on top of high buildings or masts and in sites on open grounds, and in all sites with an elevated risk of a lightning strike. WSP150 also provides an additional filter for blocking the HF and RF interference induced into the cables in installations to, for example, radio transmitter masts, and power line carrier towers. WSP150 has four channels, two dedicated for power lines and two for data lines. Each channel uses a 3-stage protection scheme with gas discharge tubes, voltage-dependent resistors, and transient zener diodes. Both differential and common mode protection is provided for each channel: across the wire pair, against the operating voltage ground, and against earth. WSP150 has a weather-proof IP66 plastic housing with metal reinforcement, mountable to Ø 30 mm … 102 mm pole masts with an adjustable mounting clamp (provided). Four cable glands are provided, two of which serve for cable branching and chaining, for example, in tower installations when common data and power lines are shared by several devices. Line cable Device cable, max. 3 meters Data Aqcuisition System Earth 1106-028 Figure 1 Operation Principle CAUTION Make sure the device cable is short to minimize surge induction to the cable. Earthing (grounding) of the unit must be done either through the mast or with a 16 mm2 (AWG 5) copper wire from the earthing screw to true earth (lightning ground). INSTALLATION 0611-027 Figure 2 Installing WSP150 to Pole Mast Disconnect all live voltages and follow the procedure below: 1. Attach the unit to the mast close to the protected device with the adjustable mounting clamp, see Figure 2. Set the steel strip beneath the latch at the back of the enclosure. 2. Fix the steel strip around the pole mast. You may shorten the strip to a suitable length. Attach the strip ends to the fastener and secure the unit to the mast by tightening the fastener's screw. 3. Open the 4 plastic screws and remove the unit cover. 4. Enter the line cable through the left side cable gland and make the wiring to the line terminals, as shown in Figures 3-6. For best shielding from RF noise, follow the instructions in Figure 8. Carefully tighten the line cable gland. 5. Enter the device cable through the right side cable gland and make the wiring to the device terminals, as shown in Figures 3-6. Carefully tighten the device cable gland. 6. Carefully reattach the unit cover with the plastic screws. 7. If the mast (or its surface or base) is poorly conductive, use an earthing wire. Connect the wire end to the crimp connector provided in the plastic bag. Fix the connector with the M5 nut and washer to the earthing screw at the enclosure's rear upper left corner. See also Figure 7 and the CAUTION. © Vaisala 2011. All rights reserved. *M210809EN* www.vaisala.com/services/warranty.html