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4 – Electrical Installation
distribution system. All cores in the cable are 1.25mm² cross-section. See
"Communication Link SEP to SDC" on page 4-8
"System Drawings"
for further details.
Table 4-2: Power and Communications cable
Connector Pin Number
(and Wire number)
1 (N)
2 (E)
3 (L)
Pin 4 (wire number 1)
Pin 5 (wire number 2)
Pin 6 (wire number 3)
Pin 7 (wire number 4)
8 (no connection)
Lay the Power and Communications cable from the ROV electrical distribution system to the PSU.
Route the cable along fixed ROV frame members and use cable clips to secure it at regular intervals.
Avoid applying any sharp bends or other points of mechanical stress along the cable.
Connect the Power and Communications cable to the 8-way male 'Power/Comms' port on the PSU.
Tighten the knurled locking collar by hand only. Do not overtighten this connector.
Before you assemble any electrical coupling in the sub-sea installation, inspect the pins and
receptacles of all connectors for signs of damage, contamination or corrosion. Follow the instructions
in
section 4.1.2 "Care of Sub-sea Connectors" on page 4-3
It is very important to provide a good ground connection on pin number 2 of the
cable. A poor or a missing connection will severely degrade the performance of
the 440 System. You must make all connections to the ROV using waterproof
connectors or splices of good quality.
4.1.3.1 Power Requirement
The standard PSU operates from an AC electrical supply in the range 100 to 120V AC, 45 to 65Hz. The
System draws approximately 2.8A at 110V nominal supply voltage. The same PSU can operate from a
DC supply in the range 140 to 170V with no further adjustments necessary.
See
Table 4-2
and make the correct power connections from the ROV electrical distribution system to
your PSU.
4-4
and the cable drawing number B930473 in
Function
Supply neutral line/L2
ROV ground (refer to sub-section 4.1.1 "Ground Connections"
beginning on page 4-3)
Supply 110V live/L1 (or +140 to +170V DC)
Comms 1
Comms 2
Comms 3
Comms 4
Linked internally to the cable screen
CAUTION
© Teledyne TSS
section 4.2.2
to clean and care for the connectors.
DPN 402196 Issue 4.1
Chapter 10
Core colours
Blue
Dark Green
Brown
Orange
White
Red
Yellow
Screen
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