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TSC-0912 - 09.10.12
Furse, Wilford Road, Nottingham, NG2 1EB • Tel: +44 (0)115 964 3700 • Email:
enquiry@furse.com• Web:
www.furse.comESP RTD, RTDQ & SL RTD Series
Protects all three wires on a 3-wire RTD system with a single protector
Very low let-through voltage (enhanced protection to BS EN 62305)
between all lines - Full Mode protection
Full mode design capable of handling partial lightning currents as well
as allowing continual operation of protected equipment
Repeated protection in lightning intense environments
Low in-line resistance minimises reductions in signal strength
Built-in DIN rail foot for simple mounting to top hat DIN rails
Convenient earthing through DIN foot and/or earth terminal
ESP RTD can be flat mounted on base or side
ESP RTD and ESP RTDQ have colour coded terminals for quick and easy
installation check
ESP SL RTD has ultra slim 7 mm width ideal for compact protection of
large numbers of lines (e.g. process control installations)
ESP SL RTD includes two stage removable protection module with simple
quick release mechanism allowing partial removal for easy line
commissioning and maintenance as well as full removal for protection
replacement
For further information on RTD applications, see separate
Application Note
AN001
(contact us for a copy).
Features and benefits
Combined Category D, C, B tested protector (to BS EN 61643)
suitable for 3-wire RTD systems to protect monitoring equipment.
For use at boundaries up to LPZ
0
A
(ESP RTD & ESP RTDQ) or LPZ
0
B
(ESP SL RTD) to protect against flashover (typically the service
entrance location) through to LPZ 3. Available as standard ESP RTD
format, or compact ESP RTDQ and Slim Line ESP SL RTD versions for
installations where a high number of lines require protection.
Replacement module for
ESP SL RTD
ESP SLRTD/M
Standard module replacement
ESP SLRTD/B
Base replacement
Combined Mounting/Earthing kits
for ESP RTD
CME 4
For up to 4 x ESP RTD
CME 8
For up to 8 x ESP RTD
CME 16
For up to 16 x ESP RTD
CME 32
For up to 32 x ESP RTD
For weatherproof enclosures, see
page 263, or contact us.
Accessories
Connect in series with the signal
line either near where it enters or
leaves the building or close to the
equipment being protected
ensuring it is very close to the
system’s earth star point. Install
protectors either within an
existing cabinet/cubicle or in a
separate enclosure.
Installation
LPZ
RTD
0
A
3
RTDQ
0
A
3
SL RTD
0
B
3
For 2-wire or 4-wire RTD applications, use one or two ESP 06D or ESP SL06 protectors
respectively.
DIRTY
CLEAN
From
line
To
equipment
Earth
4
5
6
1
2
3
LightningBarrier
From line
LINE
CLEAN
Earth
To equipment
Furse
WilfordRoad,
Nottingham,
NG21EB,UK
Clean
Line
30V
37.8V
750mA
1.0Ω
10kA
43.5V
Nominalvoltage
Maxworkingvoltage,U
c
Currentrating
In-lineresistance
Maxsurgecurrent
Let-throughvoltage,U
p
ESP RTDQ installed in series (in-line)
ESP SL RTD installed in series
ESP RTD installed in series
DIRTY
CLEAN
From
line
To
equipment
Earth