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Total Solution to Earthing & Lightning Protection |
9AKK106354A3360
12
Data & signal protection
ESP SL X Series
Combined Category D, C, B tested protector (to BS EN 61643) suitable for
twisted pair signalling applications within hazardous environments
(ATEX/IECEx approved). Available for working voltages of up to 15 and 30
Volts. For use at boundaries up to LPZ
0
to protect against flashover through
to LPZ 3 to protect sensitive electronic equipment.
Features & benefits
–– Approved for use in hazardous environments for the
protection of Intrinsically Safe circuits (Classification: II 2(1)
G, Ex ia (ia Ga) IIC T4 Gb)
–– Very low let-through voltage (enhanced protection to
IEC/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
–– Ultra slim 7 mm width ideal for compact protection of large
numbers of lines (e.g. process control installations)
–– Optional LED status indication versions available for low
current DC power applications
–– Negligible self-capacitance and self-inductance
offering minimal interference when protecting Intrinsically
Safe circuits
–– Very low (1 Ω) in-line resistance allows resistance critical
applications (e.g. alarm loops) to be protected
–– High (750 mA) maximum running current
–– High bandwidth enables higher frequency (high traffic or bit
rate) data communications
–– Screen terminal enables easy connection of cable screen
to earth
–– Suitable for earthed or isolated screen systems - add /I
suffix to part number for versions that require isolated screens
–– Built-in innovative DIN rail foot with locking feature for
simple positioning and clip-on mounting to top hat DIN rails
–– 4 mm
2
terminals allow for larger cross section wiring,
stranded wires terminated with ferrules or fitting two wires
into a single terminal
–– Approval references for ESP SL X Series: IECEx SIR
10.0030X, Sira 10ATEX2063X
Application
Use these protectors in hazardous environments where
installation space is at a premium and large numbers of lines
require protection (e.g. process control, 4-20 mA loops,
fire and gas detectors and shut-down systems). Suitable
for high speed digital communication equipment or systems
with long signal lines. See Furse Application Note AN013.
Installation
Connect in series with the data communication or signal
line either near where it enters or leaves the building or close
to the equipment being protected (e.g. within its control
panel). Either way, it must be very close to the system’s earth
star point. Install protectors either within an existing
cabinet/cubicle or in a separate enclosure.
NOTE:
Use the standard ESP SL ‘Slim Line’ Series for non-hazardous areas. The ESP SL Series is also available for protection of 3-wire, RS 485, RTD
& telecommunication applications (ESP SL/3W, ESP SL RS485, ESP SL RTD & ESP SL TN).
1
S
2
3
S
4
LightningBarrier
From line
LINE
CLEAN
Earth
To equipment
Furse
Wilford Road,
Nottingham,
NG2 1EB,UK
Clean
Line
Nominal voltage
Maxworking voltage,U
c
Current rating
In-line resistance
Max surge current
Let-through voltage,U
p
30V
36.7V
750mA
1.0
Ω
20kA
63V
From line
To equipment
LINE
CLEAN
Earth
Accessories
Replacement modules:
ESP SL15X/M, ESP30X/M
Standard module replacement for 15 and
30 V protectors respectively
ESP SL15XL/M, ESP30XL/M
LED module replacement for 15 and 30 V
protectors respectively
ESP SLX/B
Base replacement (common for standard
and LED modules)
ESP SLX/I/B
Base replacement with isolated screen
from earth
Full product range order codes can be found on pages 17/8-17/9