INM 5500 Rev 11
3
3
INSTALLATION
Important
•
Make sure that all installation work is carried out in accordance with all relevant local
standards, codes of practice and site regulations.
•
When planning the installation of MTL5500 range of isolators it is essential to
make sure
that intrinsically safe and non-intrinsically safe wiring is segregated
, and that units are
installed as required by a nationally accepted authority or as described in EN 60079-14, ISA
RP 12.6 or DIN VDE-165.
•
External power supply shall contain double isolation from hazardous voltages or that unit
shall be supplied by Limited Power Circuit per UL/IEC 60950 or Limited Energy Circuit per
UL/IEC 61010 or Class ll Power Supply per NEC.
•
Environmental conditions: indoor use, altitude (up to 2000m) and humidity less than 95%
non condensing.
•
Check that the hazardous-area equipment complies with the descriptive system
document.
•
If in doubt, refer to the certificate/catalogue for clarification of any aspects of intrinsic
safety or contact Eaton’s MTL product line or your local representative for assistance.
•
Make sure the correct hazardous-area connector (field-wiring plug) is plugged into the
corresponding isolator. It is recommended that the connector is identified by the same tag
number as the matching isolator.
Figure 3 .1: Dimensions of MTL5500 package
Mount all MTL5500 range of isolators on low-profile (7mm) or high-profile (15mm) type
T35 (top-hat) DIN-rail to EN50022, BS5584, DIN46277. This is available from Eaton, in
1 metre lengths (
THR2
- DIN rail). Install isolators within the safe area unless they are
enclosed in approved flameproof, pressurised or purged enclosures and ensure that
the local environment is clean and free of dirt and dust. Note the ambient temperature
considerations of section 3.1.4.
It is recommended that, in normal practice, the DIN rail should be earthed/grounded
to ensure the safety of personnel in the event of a.c. mains (line) power being applied
accidentally to the rail.
SAFE
HAZ
104.8
109.8
123.
6
118.
8
Top of DIN rail
PWR
OPB
OP
A
OPD
OPC
FL
T
Optional TH5000 tag holder for individual
isolator identification.
Accepts tag label 25 x 12.5 ±0.5mm, 0.2mm thick
15.8 +/– 0.2
