Vaisala WSP152 Technical data
WSP152 Surge Protector
WSP152 for the protection of a PC’s USB connection.
Features/Benefits
Excellent three-stage, transient
▪
surge protection
Tolerates up to 10 kA surge
▪
currrents
Noise filtering against HF and
▪
RF interference
Both dierential and common
▪
mode protection on each
channel
2 power and 2 data channels
▪
Especially designed to
▪
protect the USB connection
of a PC connected to the
Vaisala Weather Transmitter
WXT520 or Vaisala WINDCAP®
Ultrasonic Wind Sensor
WMT52
WSP152
The Vaisala Surge Protector WSP152
is a compact transient overvoltage
suppressor designed for the
protection of the USB connection of a
PC connected to the Vaisala WXT520
or WMT52.
Excellent protection
The WSP152 is designed to protect
the host PC against surges entering
through the USB port. For example,
a nearby lightning strike may induce
a high-voltage 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
www.vaisala.com
where long cables of more than 30
m are used. Please note that the USB
connection of a PC is for indoor use
on ly.
The WSP152 offers three-stage
protection against surge currents up
to 10 kA that may enter through the
USB cable or the port.
How does WSP152 work?
The WSP152 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 earth.
The WSP152 also includes noise
ltering against HF and RF
interference.
Applications
Vaisala recommends using the
WSP152 when USB cables are
used for permanent connections.
The surge protector is always
recommended when there is an
elevated risk of lightning strike.
Technical data
16 mm2 copper wire
M12 / 8-pin female
for line cable
M12 / 8-pin male
for Vaisala USB cable
69 (2.72)
58 (2.28)
130 (5.12)
94 (3.70)
107 (4.21)
Maximum characteristics
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)
Dimensions
housing (w x h x d) 130 x 94 x 58 mm
with connectors 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
WSP152 CAN BE USED WITH A PC CONNECTED TO, FOR
EXAMPLE, THE FOLLOWING VAISALA INSTRUMENTS:
WXT520
WMT52
Dimensions
Dimensions in cm (inches)
For more information, visit
www.vaisala.com or contact
us at sales@vaisala.com
Ref. B210760EN-B ©Vaisala 2009
This material is subject to copyright protection, with all
copyrights retained by Vaisala and its individual partners. All
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.
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