Vaisala WSP150 Manuale utente

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 dierential 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

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.

WSP150 has a weather-proof IP66 plastic housing with metal reinforcement. You can mount it on

Ø 30 mm … 102 mm (1.18 … 4.02 in) pole masts with the provided adjustable mounting clamp. WSP150

has 4 cable glands. Two cable glands are for cable branching and chaining in tower installations when

common data and power lines are shared by several devices.

Figure 1 Operating Principle

Mounting WSP150

You can mount WSP150 on a wall or to a boom, with 2 screws inserted to the lowermost through-holes

behind the cover ﬁxing screws. If you enter the screws from the rear, no nuts are needed. You can use

the M4 threads in the holes.

1. Disconnect all live voltages.

2. Attach the unit to the mast close to the protected device with the adjustable mounting clamp. Set

the steel strip beneath the latch at the back of the enclosure

3. Fix the steel strip around the pole mast. You can shorten the strip to a suitable length.

4. Attach the strip ends to the fastener and secure the unit to the mast by tightening the fastener

screw.

5. Open the 4 plastic screws and remove the enclosure cover.

Quick Guide M210809EN-D

6. Enter the line cable through the left side cable gland and make the wiring to the line terminals.

For best shielding from RF interference, bend the output cable shield over the plastic sleeve and

O-ring and tighten the line cable gland carefully.

7. Enter the device cable through the right side cable gland and make the wiring to the device

terminals as shown below. Carefully tighten the device cable gland.

8. Reattach the enclosure cover with the 4 plastic screws.

9. If the mast (or its surface or base) is poorly conductive, use a grounding 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 grounding screw at the enclosure's rear upper left corner.

To minimize surge induction to the cable, make sure the device cable is short.

Ground the unit through the mast or with a 16 mm2 (AWG 5) copper wire from the grounding

screw to true earth (lightning ground).

CAUTION!

Wiring WSP150

In other products, wire colors and signal names may dier.

Figure 2 Wiring with RS-485

Quick Guide M210809EN-D

Figure 3 Wiring with RS-422

Figure 4 Wiring with SDI-12

Figure 5 Wiring with RS-232

Quick Guide M210809EN-D

Figure 6 Wiring WSP150 with WXT532 with 2 x 4-20mA outputs

Technical Data

Table 1 Inputs and Outputs

Property Description/Value

Input voltage 1) 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

Dierential: max. 5 kA

1) Across channel line pair and from line to GND, terminals #3

Table 2 Mechanical Speciﬁcations

Property Description/Value

Weight 0.65 kg (1.43 lb)

Housing material Polycarbonate, stainless steel

Housing dimensions (H × W × D) 94 × 130 × 58 mm (3.70 × 5.12 × 2.28 in)

Dimensions with cable glands and mounting

assembly (H × W × D)

112 × 130 × 69 mm (4.41 × 5.12 × 2.72 in)

Cables (Ø) 5 … 10 mm (0.20 … 0.39 in)

Wires (Ø) 0.4 … 1.7 mm (0.016 … 0.067 in) (AWG 26 … 14)

Quick Guide M210809EN-D

Table 3 Operating Environment

Property Description/Value

Operating temperature -52 … +70 °C (-60 … +158 °F)

Storage temperature -52 … +70 °C (-60 … +158 °F)

Installation temperature -40 … +70 °C (-40 … +158 °F)

Maintenance work temperature -40 … +70 °C (-40 … +158 °F)

Table 4 Compliance

Property Description/Value

EMC surge tolerance EN 61000-4-5 (4 kV, 2 kA)

IEEE C62.45 (6 kV, 3 kA)

IP rating IP66 (NEMA 4X)

Quick Guide M210809EN-D

Figure 7 Dimensions in mm [in]

Quick Guide M210809EN-D

Indice

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