Vaisala WSP150 Technical data

WSP150 Surge Protector

WSP150 - powerful technology in a compact size.

Features/Benefits

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 dierential and common

▪

mode protection on each
channel

2 power and 2 data channels

▪

Can be used with all Vaisala

▪

wind and weather instruments

Applications: mast installations

▪

of weather measurement
networks, MET stations in wind
parks

WSP150

The Vaisala Surge Protector WSP150
is a compact transient overvoltage
suppressor designed for outdoor use.
It can be used with all Vaisala wind
and weather instruments.

Superior protection

A lightning strike nearby may
induce a high voltage surge, which
the integral transient suppressor
of the instrument may not tolerate.
Therefore, additional protection is
needed, especially where frequent
and severe thunderstorms are
common and where long cables of
more than 30 m are used.

www.vaisala.com

The WSP150 offers three-stage
protection against surge currents up
to 10 kA entering through the power
and signal cables.

Powerful technology

The WSP150 has four channels, two
of which are dedicated to power lines
and two for data lines. Each channel
uses a three-stage protection scheme
as follows: rst there are discharge
tubes, then voltage dependent
resistors (VDR), and nally 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 the earth.

The WSP150 also includes noise
ltering against HF and RF
interference.

Applications

Vaisala recommends using the
WSP150 when wind and weather
instruments are installed on top of
high buildings or masts and in open
grounds, that is, anywhere with an
elevated risk of lightning.

Also use the WSP150 if your cable
length exceeds 30 m or you have
unshielded, open-wire lines.

69

58

94

130

120

Line cable Device cable,

max. 3 meters

16 mm

2

copper wire

Technical data

Maximum characteristics

Dimensions

Input voltage
(across channel line pair and from line to GND, terminals #3)

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 0.3 ohms
data lines 15 ohms

Turn-on voltage

power channels max. ±60 V
data channels max. ±16 V

Surge current

to earth max. 10 kA
differential max. 5 kA

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

IEEE C62.45 (6 kV, 3 kA)

General

Operating and storage temperature -52 ... +70 °C

(-60 ... +158 °F)

Installation and maintenance work temperature -40 ... +70 °C

(-40 ... +158 °F)
Environmental protection class IP66 (NEMA 4X)
Dimensions

housing (w x h x d) 130 x 94 x 58 mm
with cable glands and mounting assembly 130 x 120 x 69 mm
cables ø 4 ... 8 mm
wires ø 0.4 ... 1.7 mm

(AWG 26 ... 14)
Housing material polycarbonate, stainless steel
Weight 0.65 kg

WSP150 CAN BE USED WITH, FOR EXAMPLE, THE FOLLOWING
VAISALA INSTRUMENTS:

WXT520
WMT52
WM30
WS425
WA15 + WAC151/WAC155/WAT12
WA25 + WAC151/WAC155/WAT12

For more information, visit
www.vaisala.com or contact
us at [e-mail]

Ref. B210654EN-B ©Vaisala 2009

This material is subject to copyright protection, with all
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rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. The reproduction, transfer,
distribution or storage of information contained in this brochure
in any form without the prior written consent of Vaisala is strictly
prohibited. All specifications — technical included — are subject
to change without notice.