Issue/Rev. 0.1 (11/18) ║ MNKS025 • Page 23
MPU
Series
C
I/O/M
Manual
Operation
3.9.1.1. Equipment Required
• Conventional hand tools for cable installation.
• If a fiber optic cable is a part of the delivery, special tools for connecting ST-connectors
are required.
CAUTION:
To prevent ignition of hazardous atmospheres, disconnect from supply circuit
before opening, keep tightly closed when circuits are in operation.
WARNING:
Contains internal battery-powered circuit. In order to prevent ignition of haz-
ardous atmospheres, do not open enclosure unless area is known to be non-hazardous.
3.9.1.2. Cable Installation Check List
1. All cables to and from the MPU are connected to dedicated terminals in the electronic
enclosure.
2. Check that the connection of armor and screens are done according to the drawings
and relevant specifications. General descriptions for installation of the various power
or signal types are shown below. Keep in mind various types of cable glands and how
these should be installed.
3. The cable must be installed on cable trays or in pipes, protected against mechanical
damage.
4. The external cables are entered into the Ex d enclosure, and relevant regulations for
such installation must be followed. Keep in mind minimum segregation between power
and signal cables.
5. Be aware of the minimum bending radius of the cable. The bending radius for a
multi-core cable is normally 6 times the diameter, but may vary so cable specifications
must be checked.
6. Make sure that the earthing system is maintained. The Protective Earth (PE) bars
have to be connected to the main earth system.
7. Make sure that the Cortech or similar is removed from the connection box before
power is switched on.
8. All cable armor or cable shield connections should be as short as possible, reduce
“pigtails” to a minimum.
Содержание Smith Meter MPU 1600c
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