Technical data
MTL surge protection
MTL FP32 range
DIN-rail mounting, 20kA surge
protection for fieldbus systems
• DIN-rail mounting for easy installation
and automatic earthing (grounding)
• 20kA maximum surge current per line
• Plug connectors for quick and easy
connection or rewiring
• Meets the requirements of IEC61158-2:2004
for F
• 10 year product warranty
oundation™ fieldbus
July 2015
EPS 901-103 Rev Q
The FP32 surge protection device prevents surges and transient
over-voltages, conducted along the Trunk or Spurs of fieldbus systems,
from damaging the associated electronics such as terminators, spur
blocks and the bus control equipment. The FP32 is designed to be
used at both ends of the Trunk where a Spur is connected, to safely
divert any surges to earth.
The multi-stage hybrid surge protection network at the heart of
the FP32, uses a combination of solid state electronics and a gas-filled
discharge tube (GDT) to provide surge protection up to 20kA. This
impressive surge protection circuit is designed to exhibit exceptionally
low line resistance and adds only a tiny voltage drop to the bus. As a
result, no matter how many FP32 devices are connected to a Trunk or
Spur the system will still be able to support up to 32 transmitters as
specified by IEC 61158-2.
In operation the FP32 device does not adversely affect the
performance or operation of the fieldbus or connected equipment,
it allows signals to pass with very little attenuation while diverting
surge currents safely to earth (ground) and clamping output voltage
to safe levels.
Fully automatic in operation, FP32 devices react immediately
to make sure that equipment is never exposed to damaging
surges between lines or the lines and earth (ground). Reacting
instantaneously, the FP32 redirects surges safely to earth and then
resets automatically.
DIN-rail mounting and a small footprint allow the FP32 to be
conveniently located near terminators and spur blocks, while plug
connectors for Trunk / spur cables and the earth (ground) & shield of
the cable make removing a device or re-patching a simple operation.
A 10 Year ‘No Fuss’ warranty is available, as standard, for the FP32,
so if a correctly connected device should fail for any reason, simply
return it for a free replacement.
The FP32 meets IEC 61158-2:2000 for 31.25kB/s systems such as
oundation™ fieldbus, PROFIBUS-PA and WorldFIP.
F
Measurement Technology Limited,
Great Marlings, Butterfield, Luton
Beds, LU2 8DL, UK.
Tel: + 44 (0)1582 723633 Fax: + 44 (0)1582 422283
E-mail: mtlenquiry@eaton.com
www.mtl-inst.com
© 2015 MTL
All Rights Reserved
Publication No. EPS 901-103 Rev Q
July 2015
1
MTL FP32 range
July 2015
SPECIFICATION
All figures typical at 25°C (77°F) unless
otherwise stated
Maximum surge current
20kA (8/20 µs waveform) per line
Leakage current
<1mA @ working voltage
Working voltage
±32Vdc
Figure 1 Dimensions
Maximum continuous operating voltage
±36V peak normal mode
±225V peak common mode
Limiting voltage
62V @ 3k A 8/20µs
Line resistance
0.5ohm per line
Capacitance
Line to Line: 40pF
Line to Earth (Ground): 80pF
Attenuation
-1dB — (7kHz-7.5MHz)
Ambient temperature limits
-40°C to +70°C
(-40°F to +158°F ) (working)
-40°C to +80°C
(-40°F to +176°F) (storage)
Humidity
5% to 95% RH (non- condensing)
Electrical connections
Plug/ header screw terminal strip
Weight
140g approx. (5.0 oz.)
Dimensions
See figure 1
EMC compliance
BS EN 61000-6-2:1999
Electrical Safety
BS EN 60950:1992
BS EN 61010-1:1993
Unprotected ve+
Unprotected ve-
Shield
Ground (Earth)
Din-Rail
Figure 2 Connection details
TO ORDER SPECIFY - Order by module, as listed in the specification table below.
Model FP32
Nominal voltage Un32V
Rated vol tage (MCOV ) Uc36V
Nominal current I
Nomina l discharge cur rent (8/2 0µs) i
Max dis charge current ( 8/20 µs) I
Lightning impulse current (10/350µs) I
Residual voltage @ i
Voltage p rotection level @ 1kV/ µs Up<45V
Bandwidth f
Capacitance C 40pF
Series resistance R 0.5ohm
Operating temperature range -4 0°C to +70°C
Categor y tested A2, B2 , C1, C2, C3, D1
Overstressed fault mode in=3kA 22kA
Impulse durability (8/20µs) 10k A
Degree of protection IP20
AC durability 1A
Service conditions 80k Pa - 160kPa 5% - 95% RH
Tested in accordance to IEC 61643-21
sn
Protected ve+
Protected ve-
Shield
Ground (Earth)
HAZARDOUS AREA APPROVALS
Country
(Authority)
Europe
(Baseefa)
Europe
(MTL)
USA (FM) Class 3600 (1998), Class 3610 (2010),
International
(IECEx)
Canada (FM) C22.2 No. 213, 142, 94, 157, 30
India
(PESO)
Marine (Lloyds Register) Test Specification No. 1, 20 02 09/60014 Environmental Category
EN 60079-0:2012
EN 60079-11:2012
EN 60079-14:2009
EN 60079-15:2010
Class 3611 (1999), Class 3615 (1989),
Class 3810 incl. Supp 1 (1995-07 (1989-03),
ANSI/NEMA 250 (1991)
ANSI/ISA 60079-0 (2009)
ANSI/ISA 60079-11 (2009)
ISA-S12.0.01 (1999)
IEC 60079-0:2011
IEC 60079-11:2011
ANSI/NEMA 250
CAN/CSA-E79-0, CAN/CSA-E79-11
Petroleum & E xplosives S afety
Organisation
Standard
Baseefa04ATEX0260X Ex ia IIB T 3 Ga
MTL02ATEX0032X E x n IIC T4 Ga
IECEx BAS 13.0095X Ex ia IIB T3 Ga
3025374C IS/I/1/A-D, I/0/AEx ia IIC,
Certificate/
File No.
sn
max
imp
U
n
G
Figure 3
Installation
1.6 A
3kA
20kA
2.5kA
62V
p
73MHz
rms
Ex ia IIC T4 G a
-4 0°C ≤ Ta ≤ +70°C
-30 °C ≤ Ta ≤ +70°C
IS/I/1/A-D, I/0/AEx ia IIC,
I/0/AEx ia IIB, NI/I/2/A-D,
NI/I/2/IIC
Ex ia IIC T4 Ga
-40°C ≤ Ta ≤ +70°C
I/0/AEx ia IIB, NI/I/2/A-D,
NI/I/2/IIC
EEx ia IIB T3 FP 32
ENV3
, 5T
Approved for Product
FP32
FP32
FP32
FP32
FP32
FP32
Measurement Technology Limited,
Great Marlings, Butterfield, Luton
Beds, LU2 8DL, UK.
Tel: + 44 (0)1582 723633 Fax: + 44 (0)1582 422283
E-mail: mtlenquiry@eaton.com
www.mtl-inst.com
© 2015 MTL
All Rights Reserved
Publication No. EPS 901-103 Rev Q
July 2015
EUROPE (EMEA):
+44 (0)1582 723633
mtlenquiry@eaton.com
THE AMERICAS:
+1 800 835 7075
mtl-us-info@eaton.com
ASIA-PACIFIC:
+65 6 645 9888
sales.mtlsing@eaton.com
The given d ata is only intended as a p roduct
descrip tion and should not be r egarded as a legal
warrant y of properties or gu arantee. In the interes t
of further technical developments, we reserve the
right to make de sign changes.
2
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