Eaton Crouse-hinds series User manual

RTK PEX7250 explosion proof annunciator
Operating instructions
June 2018
INS RTK PEX7250 Rev 8
Instruction sheet
MTL process alarm equipment
1
Eaton Electric Limited,
Great Marlings, Butterfield, Luton
Beds, LU2 8DL, UK.
Tel: + 44 (0)1582 723633 Fax: + 44 (0)1582 422283
E-mail: [email protected]
www.mtl-inst.com
© 2019 Eaton
All Rights Reserved
Publication No. INS RTK PEX7250 Rev 8
June 2019
1
EUROPE (EMEA):
[phone]
[email protected]
THE AMERICAS:
[phone]
[email protected]
ASIA-PACIFIC:
[phone]
[email protected]
The given data is only intended as a product
description and should not be regarded as a legal
warranty of properties or guarantee. In the interest
of further technical developments, we reserve the
right to make design changes.
Introduction
This manual provides the information necessary to install, connect, test and maintain the RTK PEX7250 explosion proof
alarm annunciator.
Description
The RTK PEX7250 explosion proof annunciator is available with 1 of 3 of our established products fully integrated within the
enclosure. Option 1 = RTKP725, Option 2 = RTK725B/C and these versions are available using 30 x 30 mm, 30 x 60 mm or
60 x 60 mm window sizes. Option 3 = RTKSIL725 which is certified for SIL2 applications. This version is available in 30 x 60
mm or 60 x 60 mm window sizes.
The standard enclosure is copper free cast aluminium alloy and is finished in a light grey two-part epoxy paint, coloured
RAL7035, making it ideal for offshore applications. Systems are available in a range of formats and sizes and all carry the
same approval to internationally recognised Zone 1 standards.
Installation
This product has been certified to be mounted in
Zone 1,2,21 or 22 hazardous areas. Equipment must be
installed in accordance to IEC60079-14 (Electrical installation
in hazardous areas) or alternative national standards.
Manual Handling
Below are basic methods which should be observed while
handling the equipment.
• Assess the load (size, shape and weight). Is mechanical
or human assistance is required?
• Assess where the unit will be placed. Make sure there
are no obstructions, and the route is clear.
• Stand as close to the load as possible, with your feet
shoulder width apart.
• Bend your knees and try to keep the back’s natural,
upright posture.
• Grasp the load firmly as close to the body as you can.
• Use the legs to lift the load in a smooth motion as this
offers more leverage reducing the strain on your back.
• Carry the load close to the body with the elbows tucked
into the body.
• Avoid twisting the body as much as possible by turning
your feet to position yourself with the load
Mounting
Unit is supplied with mounting brackets for vertical or
horizontal mounting.
Connection detail
Refer to wiring diagram supplied for terminal connections. All
wiring inside the box must be carried out in compliance with
the characteristics of the components.
Use and Service
All the operations of installation and service will be carried out
when the circuit is not powered. Take care in not damaging
the coupling joints; always reapply the silicone grease to
the flanges before re-closing the box, and ensure all closing
screws have been returned and fully tightened. Use screws
of quality A2-70 according UNI 7323 with ultimate tensile
strength of at least 700N/mm²
Cable Entries
Refer to the General Arrangement drawing supplied with the
unit for details on cable entries fitted to the RTK PEX7250
Annunciator.
WARNING:
Ensure only correctly sized cable glands are used and
that any threaded hole within the lid or the body not
being used is closed with certified blanking plugs.
Cable entries shall also be suitably sealed if the enclosure
is to be used in dust atmospheres.
Specific Conditions of Use
1. It is the responsibility of the installation engineer to ensure
that suitably ATEX equipment certified Ex db IIB+H2 cable
glands and blanking plugs are installed to ensure that the IP
rating of IP66/67 is maintained on the Ex d enclosure.
2. When the enclosure is fitted with an MTL5521, the
enclosure must be mounted vertically.

RTK PEX7250
Operating instructions
June 2019
2www.mtl-inst.com
Annunciator Instructions
For full detailed operating instructions refer to full Annunciator
manual supplied with unit.
Location
RTK PEX7250 has been certified for use in Zone 1, Zone
2, Zone 21 or Zone 22 and with Gas Groups IIB+Hydrogen
and IIIC
Labelling
The RTK PEX7250 are shipped with one of the following
labels:-
• Certification label (Figures 3-4) showing all relevant
certification information dependant on which
application is required.
Option A – RTKP725 or RTKP752B/C with PSU
Figure 1: Certification label for option A.
(40°C ambient version)
Option B – RTKP725 or RTKP752B/C with MTL5521
IS isolator
Figure 3: Certification label for option B.
Special conditions for units with MTL5521
• The unit must be mounted vertically.
• Require a separate gland entry for the IS circuit only.
No other electrical connections are allowed.
• Maximum Ambient of 40°C allowed
Option C – RTKSIL725
Figure 4: Certification label for option C
RTK PEX7250 alarm annunciator system
SP753-AAAAA
II 2 GD Ex db IIB+H T6 Gb (T -20
2 amb °C to +40°C)
Ex tb IIIC T (T -2085°C Db °C to +40°C) IP66/67
amb
CERT No: Baseefa06ATEX0089X
Voltage:
Watts:
Year:
CCC V(max)
YYY W(max)
BBBB
Freq:
Amps:
XXXX Hz
ZZZ A(max)
WARNING:
Do NOT open when an explosive Atmosphere may be present
Use cable suitable for a minimum temperature of 105°C. Use
screws of quality A2-70 according UNI 7323 with ultimate tensile
strength of at least 700N/mm²
SEE INSTRUCTION MANUAL FOR CABLE GLAND INFORMATION
EATON ELECTRIC LTD, Luton, England.
Made in England. www.mtl-inst.com

!
1180
RTK PEX7250 alarm annunciator system
SP753-AAAAA
II 2 (1) GD Ex db [ia Ga] IIB T6 Gb °C to +40°C)+H (T -20
2 amb
Ex tb [ia Da] IIIC T85°C Db °C to +40°C) IP66/67(T -20
amb
CERT No: Baseefa06ATEX0089X
Voltage:
Watts:
Year:
CCC V(max)
YYY W(max)
BBBB
Freq:
Amps:
XXXX Hz
ZZZ A(max)
WARNING:
Do NOT open when an explosive Atmosphere may be present
Use cable suitable for a minimum temperature of 105°C. Use screws of
quality A2-70 according UNI 7323 with ultimate tensile strength of at
least 700N/mm²
1180
EATON ELECTRIC LTD, Luton, England.
Made in England. www.mtl-inst.com
SEE INSTRUCTION MANUAL FOR CABLE GLAND INFORMATION
CONTAINS I.S. DEVICE TO BASEEFA07ATEX0212
ENCLOSURE TO BE MOUNTED VERTICALLY
!

RTK PEX7250 alarm annunciator system
SP753-AAAAA
1180
Voltage:
Watts:
Year:
CCC V(max)
YYY W(max)
BBBB
Freq:
Amps:
XXXX Hz
ZZZ A(max)
WARNING:
Do NOT open when an explosive Atmosphere may be present
Use cable suitable for a minimum temperature of 105°C. Use
screws of quality A2-70 according UNI 7323 with ultimate tensile
strength of at least 700N/mm²
SEE INSTRUCTION MANUAL FOR CABLE GLAND INFORMATION
EATON ELECTRIC LTD, Luton, England.
Made in England. www.mtl-inst.com

!
II 2 GD Ex db IIB T6 Gb °C to +40°C)+H (T -20
2 amb
Ex tb IIIC T85°C Db °C to +40°C) IP66/67(T -20
amb
CERT No: Baseefa06ATEX0089X
Safety Instructions
These instructions are addressed to qualified personnel in
compliance with the national laws. The equipment should
be installed to local codes of practice and also IEC60079-14
and IEC60079-17 (when applicable) concerning the electrical
equipment for potentially explosive atmospheres.
• The purchaser should make the manufacturer aware of
any External effects or Agressive subtances that the
equipment may be exposed to.
• The enclosure will only be installed in the designated
hazardous area as stated in the equipment certificate.
• Comply with all data indicated on the enclosure
• The enclosure will only be installed if it is wholly intact
• Use exclusively spare parts from Eaton Electric Ltd
• Routine maintenance and servicing will be carried out
exclusively by qualified electricians with the supervision of
“expert” personnel.
RTK PEX7250 alarm annunciator system
SP753-AAAAA
II 2 GD Ex db IIB+H T5 Gb (T -20
2 amb °C to +55°C)
Ex tb IIIC T (T -2085°C Db °C to +55°C) IP66/67
amb
CERT No: Baseefa06ATEX0089X
Voltage:
Watts:
Year:
CCC V(max)
YYY W(max)
BBBB
Freq:
Amps:
XXXX Hz
ZZZ A(max)
WARNING:
Do NOT open when an explosive Atmosphere may be present
Use cable suitable for a minimum temperature of 105°C. Use
screws of quality A2-70 according UNI 7323 with ultimate tensile
strength of at least 700N/mm²
SEE INSTRUCTION MANUAL FOR CABLE GLAND INFORMATION
EATON ELECTRIC LTD, Luton, England.
Made in England. www.mtl-inst.com

!
1180
Figure 2: Certification label for option A.
(55°C ambient version)

EUROPE (EMEA):
[phone]
[email protected]
THE AMERICAS:
[phone]
[email protected]
ASIA-PACIFIC:
[phone]
[email protected]
The given data is only intended as a product
description and should not be regarded as a legal
warranty of properties or guarantee. In the interest
of further technical developments, we reserve the
right to make design changes.
RTK PEX7250
Operating instructions
June 2019
Eaton Electric Limited,
Great Marlings, Butterfield, Luton
Beds, LU2 8DL, UK.
Tel: + 44 (0)1582 723633 Fax: + 44 (0)1582 422283
E-mail: [email protected]
www.mtl-inst.com
© 2019 Eaton
All Rights Reserved
Publication No. INS RTK PEX7250 Rev 8 050619
June 2019
3
Specification
Standards:
EN60079-1:2014, EN60079-0:2012+A11:2013,
EN60079-31:2013, EN60079-11:2012
Approved for :
II 2 GD
Ex db IIB+H2 T6 Gb (Tamb -20°C to +40°C)
Ex tb IIIC T85°C Db (Tamb -20°C to +40°C) IP66/67
or:
II 2
GDEx db IIB+H2 T5 Gb (Tamb -20°C to +55°C)
Ex tb IIIC T100°C Db (Tamb -20°C to +55°C) IP66/67
or, when fitted with MTL5521:
II 2 (1) GD
Ex db [ia Ga] IIB+H2 T6 Gb (Tamb -20°Cto+40°C)
Ex tb [ia Da] IIIC T85°C Db (Tamb -20°C to +40°C) IP66/67
Certificate No :
Baseefa06ATEX0089X
Max Power Dissipation:
116.3W@70% efficiency (Based On Largest sized
RTKP725 with LED’s and repeat relays)
30W max for units with SIL725
Current
Max Size System: 2.2A
Connections
Terminals for 2.5mm2 cable.
Protection
IP66
EMC Compliance
Immunity to EN61000-6-2:2005
Emissions to EN6100-6-4:2007
LVD Compliance
EN61010 -1:2010
IEC61010-2-201 Ed.1
Ambient Temperature
Operating: -20°C to +40°C for T85
Operating: -20°C to +55°C for T100
Storage: -20°C to +80°C
Ambient temperature limited to +40°C for units fitted with
MTL5521 and RTKSIL725.
Humidity
0-95% RH, non-condensing
System
Largest RTK725 or RTK725B/C Annunciator – 5 Modules wide
x 3 Modules High (max dimensions 324W x 204H x 145D)
Largest RTKSIL725 Annunciator - 3 Modules wide x 2
Modules High (max dimensions W x H x 145D)
Largest Power Supply Unit 60W/24VDC @ 2.5 AMPS
(max dimensions 159W x 97H x 38D)
Cable Entries
Cable entries are shown on the General Arrangement drawing
supplied with the equipment. Ensure only correctly sized cable
glands or blanking plugs are used
Outputs
RTK725 Series and RTK725B/C units are equipped with dual
group relays and dual horn relays as standard.
Individual repeat relays and RS485 serial interface are available
on request.
RTKSIL725 units are supplied with SIL2 certified relay outputs
for horn and group. Individual repeat relays and additional SIL2
certified relay outputs are available on request.