jotron Phontech BTS 4000, Documentation Handbook, Page: 16 / 52

Doc.No.: 08400-006-DE
Page 14 of 19
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6.5. CABLE REQUIREMENTS
All cables used with the Batteryless Telephone System to be of approved ship cable type.
ESPECIALLY
IMPORTANT:
!
Common outer screen
!
Individually twisted pairs
!
Recommended minimum conductor area is 0.50 mm²
!
All cabling in the batteryless telephone system to be a separate network
!
DO NOT COMBINE WITH OTHER CABLES. THIS IS TO PREVENT
DISTURBANCE AND NOISE CAUSED BY INTERFERENCE.
6.6. GLANDING
The cables enter the units by means of cable glands. Where cable glands are not supplied from
the factory, the installer must adapt the glands to the actual cable outer diameter. This is to
obtain the specified ingress protection and cable relief.
6.7. SCREENING
The cable screen must be terminated to the ships GND in the “main unit” (4051/4061). The
cable screen must be connected through the junction box(s) and terminated in terminal 21
(terminal 35 in 4040) or earth stud in all telephones. Ref chapter 6.1 above.
6.8. MARKING
Each cable to be marked with cable number.
Each conductor to be marked with the specific termination number.
Please note that BTS telephones uses plug-able screw terminals as standard. This is to make the
installation and service work as smooth as possible.
6.9. FASTENING
Where applicable, the cables and the conductors shall be strapped to the structure.
6.10. PRESERVATION
Prior to, during, and after completion of the installation the equipment surfaces to be protected
against acid holding fluids, pollution, moist, impacts etc.
Handbook page
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